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Dell 28XX Switch User Manual

1. 6 o E 2 E GN E 3 do e Se The PowerConnect 2824 supports the following ports e 24 Gigabit Ethernet copper ports e 2SFP combo ports 1000BASE SX or 1000BASE LX PowerConnect 2848 The following figure illustrates the PowerConnect 2848 front panel Figure 1 4 PowerConnect 2848 Front Panel The PowerConnect 2848 supports the following ports e 48 Gigabit Ethernet copper ports e 4SFP combo ports 1000BASE SX or 1000BASE LX Dell PowerConnect 28xx Systems User Guide Summary of PowerConnect Models The following table summarizes the PowerConnect models Table 1 1 PowerConnect Models Model Copper Ports Optical Ports RS232 serial port Fans RJ 45 Connectors GbE baud rate is 9600 bps PowerConnect 2808 8 built in 10 100 1000 Base T ports none Internal console port none PowerConnect 2816 16 built in 10 100 1000 Base T ports none External console port none PowerConnect 2824 24 built in 10 100 1000 Base T ports 2 SFP combo External console port 1 PowerConnect 2848 48 built in 10 100 1000 Base T ports 4 SFP
2. Startup Men enen oats cee do edhe are Enea te ee ee ee a Software Download 2 o o Erase FLASH File 2 o 5 Erasing the Device Configuration 2 00 Password Recovery 2 2 00 Software Download Through TFTP Server Using Dell OpenManage Switch Administrator Understanding the Interface 2 en Using the Switch Administrator Buttons 0 0 0 Information Buttons 2 ee Device Management Buttons 0 Starting the Application 2 ee Access Levels naa 6S a Oe BR ROE a Bee edad Configuring System Information Defining General Device Information Viewing Device Information 00 Viewing the Versions Page 2 2 2 ee Resetting the Device 2 2 0 0 Entering Secure Mode aaa 0 202 000 Defining Device IP Addresses e Defining IP Interface Parameters o o o Running Cable Diagnostics 2 2 0 0 0 00 000 00000 4 Viewing Copper Cable Diagnostics 0 Viewing Optical Transceiver Diagnostics Managing Device Security o 0000000004 Defining the Local User Databases 0 0 0 Configuring RADIUS Global Parameters Defining SNMP Parameters 2 20 00 0020 00000000 73 Defining SNMP Global Parameters 74 Defi
3. Downloading Files 1 Open the File Download From Server page 2 Define the fields 3 Click Apply Changes The software is downloaded to the device Uploading Files The File Upload to Server page contains fields for uploading the Configuration file from the device to the TFTP server To open the File Upload to Server page click System File Management gt File Upload in the tree view Figure 6 22 File Upload to Server _Dell OpenManage Switch Administrator Support Help About Log Out DGLL PowerConnect 2848 10 5 225 88 File Upload to Server amp Home El System File Upload to Server General IP Addressing Print Refresh Diagnostics Management Se SNMP i File Managemer Upload via TFTP ol File Downloa Upload via HTTP o File Upload Restore Defa DHCP Server Advanced Geatn Configuration Upload Switch Server IP Address KXXX Statistics RMON Destination File Name 1 159 Characters AAN Quality of Service Dell PowerConnect 28xx Systems User Guide 81 82 The File Upload to Server page contains the following fields Upload via TFTP Enables initiating upload via the TFTP server Upload via HTTP Enables initiating upload via the FTP server e Server IP Address The Server IP Address to which the file is uploaded e Destination File Name 1 64 Characters Indicates the file path to which the file is uploaded Uploading Files 1 Open the File Upload to Server page 2
4. Internetwork Packet Exchange 173 IP 173 IPM 173 IPX 173 ISIS 173 J Jumbo frames 173 L L2TP 173 LAG 104 173 LAGs 136 Local User Database 68 Loops 114 M MAC Address 173 174 MAC address 112 Management Information Base 174 Management security 68 180 Master Election Topology Discovery Algorithm 174 MDS 174 MDI 12 102 174 MDI MDIX 37 MDIX 12 102 174 MDU 174 Message Digest 5 174 MIB 73 174 Multicast 136 N Network Management System 174 Network security 93 O OSPF 174 P Package Contents 28 Package contents 28 Passwords 56 PDU 175 PING 175 Port aggregation 131 Port LEDs 22 Ports 101 PVID 128 130 Q QoS 147 175 Quality of Service 144 175 Queue 148 R RADIUS 70 72 175 Rapid Spanning Tree Protocol 175 RDP 175 Remote Authentication Dial In User Service 175 Reset 61 63 RMON 141 175 RSTP 15 175 Running Configuration file 79 RVSP 176 S Security 68 93 Simple Network Management Protocol 73 176 SNMP 73 75 76 176 Software version 60 Spanning Tree Protocol 114 122 Startup file 79 Storm control 108 STP 15 115 123 System 58 T W TFTP 177 Web management system Time Domain E 3 Reflectometry 64 Weighted Round Robin 148 Tree view 54 Width 21 Trivial File Transfer Protocol 177 Trunk Configuration Page 104 Trust 147 U UDP 177 Understanding the inte
5. Setup the initial SNMP Version 2 account now Return later and setup additional SNMP v1 v2 accounts For more information on setting up SNMP accounts please s the user documentation Would you like to setup the SNMP management interface now Y N Y Y Enter N to skip to Step 2 Enter Y to continue the Set up wizard The following information displays To setup the SNMP management account you must specify the management system IP address and the community string or password that the particular management system uses to access the switch The wizard automatically assigns the highest access level Privilege Level 15 ES CHIS account You can use Dell Network Manager or CLI to change this setting and to add additional management systems For more information on adding management systems s the user documentation To add a management station Pleas nter the SNMP community string to be used Dell Network Manager Please enter the IP address of the Management System A B C D or wildcard 0 0 0 0 to manage from any Management Station 0 0 0 0 Wizard Step 2 The following information displays Now we need to setup your initial privilege Level 15 user account This account is used to login to the CLI Telnet and Web interface You may setup other accounts and change privilege levels later For more information on setting up user accounts and changing privilege levels s the user documentation
6. To setup a user account Dell PowerConnect 28xx Systems User Guide Enter the user name lt 1 20 gt admin Pleas nter the user password Please reenter the user password Wizard Step 3 The following information displays Next an IP address is set up The IP address is defined on the default VLAN VLAN 2 This is the IP address you use to access the Telnet Web interface or SNMP interface for the switch To setup an IP address Please enter the IP address of the device A B C D 10 6 22 100 Pleas nter the IP subnet mask 4 B C D of nn 255 255 255 224 Dell PowerConnect 28xx Systems User Guide 47 Wizard Step 4 The following information displays Finally setup the default gateway Pleas nter the IP address of the gateway from which this network is reachable e g 192 168 1 1 Default gateway A B C D 10 6 22 97 Enter the default gateway Press Enter The following is displayed as per the example parameters described This is the configuration information that has been collected SNMP Interface Dell Network Manager 0 0 0 0 User Account setup admin Password KKKKKKKKKK Management IP address 10 6 22 100 255 255 255 224 Default Gateway is 10 6 22 97 Wizard Step 5 The following information displays If the information is correct please select Y to save the configuration and copy to the start up configuration file If the
7. 0 J O 0O A N TxRx 4 Dell PowerConnect 28xx Systems User Guide Port Default Settings The general information for configuring the device ports includes the short description of the auto negotiation mechanism and the default settings for switching ports Auto Negotiation Auto negotiation enables automatic detection of speed duplex mode and flow control on switching 10 100 1000BaseT ports Auto negotiation is enabled per port by default Auto negotiation is a mechanism established between two link partners to enable a port to advertise its transmission rate duplex mode and flow control the flow control by default is enabled abilities to its partner The ports then both operate at the highest common denominator between them If connecting a NIC that does not support auto negotiation or is not set to auto negotiation both the device switching port and the NIC must be manually set to the same speed and duplex mode If the station on the other side of the link attempts to auto negotiate with a device 10 100 1000BaseT port that is configured to full duplex the auto negotiation results in the station attempting to operate in half duplex MDI MDIX The device supports auto detection of straight through and crossed cables on all switching 10 100 1000BaseT ports The feature is part of the Auto negotiation and is enabled when Auto negotiation is enabled When the MDI MDIX Media Dependent Interface with Crossover is enabl
8. 1 Turn the power on and watch for the auto boot message KKK KK KKK KKK KKK KKK KKK KKK KKK KEK KKK KKK KKK KKK KKK KKKKKEKK KKKKKKKKKKKKKKKKK SYSTEM RESET KKEKKKKKKKKKKKKKKK KKK K KKK KKK KKK KK KKK KKK KKK KKK KKK KKK KKK KKK KKK KKKKKKKK 2 Performing the Power On Self Test POST UART Channel Loopback Tessere casct a ean eee ecu PASS Testing the System SDRAM seis sce este oasis Seite eee ee PASS Bootl Checksum Tests reswa dedni asrida See a PASS Boot Checksum Testi since ccee etanat i wee eee ea PASS Flash Image Validation Test PASS BOOT Software Version 1 0 0 20 Built 22 Jan xxxx 15 09 28 Processor FireFox 88E6218 ARM946E S 64 MByte SDRAM I Cache 8 KB D Cache 8 KB Cache Enabled Autoboot in 2 seconds press RETURN or Esc to abort and enter prom Preparing to decompress 2 When the auto boot message appears press lt Enter gt to get the Startup menu The Startup menu procedures can be done using the ASCII terminal or Windows HyperTerminal 1 Download Software 2 Erase Flash File 3 Password Recovery Procedure Dell PowerConnect 28xx Systems User Guide 4 Enter Diagnostic Mode 5 Set Terminal Baud Rate 6 Back Enter your choice or press ESC to exit The following sections describe the available Startup menu options Z NOTE When selecting an option form the Startup menu time out must be take
9. 117 Defining STP LAG Settings 2 2 0 0 0 0 e 120 Configuring Rapid Spanning Tree 0 122 Configuring VLANs 2 0 ee 124 Defining VLAN Members 0 124 VLAN Port Membership Table 0 0 126 Defining VLAN Ports Settings 2 2 2 ee 128 Defining VLAN LAG Settings 2 ee 129 Aggregating Ports 2 e 131 Defining LAG Membership 132 Multicast Forwarding Support 2 0 132 Defining Multicast Global Parameters 2 133 Adding Bridge Multicast Address Members 134 Assigning Multicast Forward All Parameters 136 IGMP Snooping 200000000002 eee 139 Viewing Statistics 0 ee 141 Viewing RMON Statistics 0 0 0 o 141 Viewing RMON Statistics Group oo e 141 Viewing Charts e 142 Viewing the CPU Utilization 2 2 0 o 142 Configuring Quality of Service 144 Defining CoS Global Parameters 0 0 e 146 Defining CoS Settings 2 2 2 ee 146 Defining QoS Interface Settings 2 0 147 Defining Queue Settings 0 o o 148 Mapping CoS Values to Queues 2 2 o o 150 Mapping DSCP Values to Queues a 0 o 151 Managing the Device Using the CLI 153 Accessing the Device Through the CET 0 0 0 0 153 Console Connectio
10. 2 3 4 Open Bridge Multicast Forward All page Define the VLAN ID field Select a port in the Ports table and assign the port a value Click Apply Changes The port is attached to the Multicast router or switch Attaching a LAG to a Multicast Router or Switch 1 2 3 4 Open Bridge Multicast Forward All page Define the VLAN ID field Select a port in the LAGs table and assign the LAG a value Click Apply Changes The LAG is attached to the Multicast router or switch Dell PowerConnect 28xx Systems User Guide IGMP Snooping The IGMP Snooping page contains fields for adding IGMP members To open the IGMP Snooping page click Switch gt Multicast Support IGMP Snooping in the tree view Figure 7 30 IGMP Snooping Dell OpenManage Switch Administrator Support Help About Log Out PowerConnect 2816 10 5 225 74 IGMP Snooping amp Home System IGMP Snooping El Switch Network Security Ports Address Tables Spanning Tree VLAN Link Aggregation Multicast Support 0 H Global Parameters VLAN ID 1 a Bridge Multicast Gror IGMP Snooping Status Enable y piia Multicast Fo Auto Leam Enable z Statistics RMON IGMP Querier Status Disable gt Quality of Service Querier IP Address 2222 Host Timeout 60 2147483647 260 Sec Multicast Router Timeout 1 2147483647 300 Sec Leave Timeout 0 2147483647 e fio Sec C Immediate Leave mi Apply Changes e VLAN ID
11. Quality of Service Cable Fault Distance O 6 8 oe Last Update undefined Approximate Cable Length Unknown length Ela e Port The port to which the cable is connected Test Result The cable test results Possible values are No Cable Open Cable cable is connected on only one side Short Cable OK The cable passed the test 64 Dell PowerConnect 28xx Systems User Guide e Cable Fault Distance The distance from the port where the cable error occurred Last Update The last time the port was tested Approximate Cable Length The approximate cable length This test can only be performed when the port is up and operating at 1 Gbps Performing a Cable Test 1 Ensure that both ends of the copper cable are connected to a device 2 Open the Integrated Cable Test page 3 Click Test Now The copper cable test is performed and the results are displayed on the Integrated Cable Test for Copper Cables page Displaying Virtual Cable Test Results Table 1 Open the Integrated Cable Test for Copper Cables page 2 Click Show All The Virtual Cable Test Results Table opens Viewing Optical Transceiver Diagnostics The Optical Transceiver Diagnostics page contains fields for performing tests on Fiber Optic cables Optical transceiver diagnostics can be performed only when the link is present To open the Optical Transceiver Diagnostics page click System Diagnostics Op
12. 91 zl Spanning Tree Description 0 64 Characters VLAN Link Aggregation Port Type 1000M copper H Multicast Support Admin Status Up y Statistics RMON Quality of Service Current Port Status Down Re Activate Suspended Port I Operational Status Active Admin Speed 1000M y Current Port Speed Admin Duplex Full al Current Duplex Mode Auto Negotiation Disable y Current Auto Negotiation 4 gt I Admin Advertisement IV Max Capability M 10 Half M 10 Full f 100Half f 100 Full M 1000 Full y e Port The port number for which port parameters are defined e Description 0 64 Characters A brief interface description such as Ethernet Port Type The type of port Admin Status Enables or disables traffic forwarding through the port The new port status is displayed in the Current Port Status field Current Port Status Specifies whether the port is currently operational or non operational e Operational Status The port operational status Possible field values are Dell PowerConnect 28xx Systems User Guide 101 102 Active The port is currently active and is currently receiving and transmitting traffic Disable The port is currently disabled and is not currently receiving or transmitting traffic Admin Speed The configured rate for the port The port type determines what speed setting options are available Admin speed can only be designated when auto negotiation is disa
13. Bridge Multicas Remove Ja IGMP Snoopin Statistics RMON Quality of Service Ports E A IA A A AOL Static _ current El LAGs ASA Static Current A gt l VLAN ID Identifies a VLAN and contains information about the Multicast group address Bridge Multicast Address Identifies the Multicast group MAC address IP address Remove When selected removes a Bridge Multicast address Ports Port that can be added to a Multicast service LAGs LAGs that can be added to a Multicast service Dell PowerConnect 28xx Systems User Guide The following table contains the IGMP port and LAG members management settings D The port LAG has joined the Multicast group dynamically in the Current Row F The port LAG is excluded from this Multicast group S Attaches the port to the Multicast group as static member in the Static Row The port LAG has joined the Multicast group statically in the Current Row Blank The port is not attached to a Multicast group Adding Bridge Multicast Addresses 1 Open the Bridge Multicast Group page 2 Click Add The Add Bridge Multicast Group page opens Figure 7 28 Add Bridge Multicast Group Add Bridge Multicast Group fre VLAN ID fi New Bridge IP Multicast Address KXXX New Bridge MAC Multicast Address ORIO Ports 12345867 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Static IL E _ Current 1 ea Mana
14. Verifies if a specific IP address is available A packet is sent to another IP address and waits for a reply Port Physical ports provide connecting components that allow microprocessors to communicate with peripheral equipment Port Mirroring Monitors and mirrors network traffic by forwarding copies of incoming and outgoing packets from one port to a monitoring port Port Speed Indicates port speed of the port Port speeds include Ethernet 10 Mbps Fast Ethernet 100Mbps e Gigabit Ethernet 1000 Mbps Protocol A set of rules that governs how devices exchange information across networks Q OoS Quality of Service QoS allows network managers to decide how and what network traffic is forwarded according to priorities application types and source and destination addresses Query Extracts information from a database and presents the information for use R RADIUS Remote Authentication Dial In User Service A method for authenticating system users and tracking connection time RMON Remote Monitoring Provides network information to be collected from a single workstation Router A device that connects to separate networks Routers forward packets between two or more networks Routers operate at a Layer 3 level RSTP Rapid Spanning Tree Protocol Detects and uses network topologies that allow a faster convergence of the spanning tree without creating forwarding loops 175 Running
15. 114 Querying the Dynamic Address Table 1 Open the Dynamic Address Table 2 Define the parameter by which to query the Dynamic Address Table Entries can be queried by Port MAC Address or VLAN ID 3 Click Query The Dynamic Address Table is queried Sorting the Dynamic Address Table 1 Open the Dynamic Address Table 2 From the Address Table Sort Key drop down menu select whether to sort addresses by address VLAN ID or interface 3 Click Query The Dynamic Address Table is sorted Configuring the Spanning Tree Protocol Spanning Tree Protocol STP provides tree topography for any arrangement of bridges STP also provides one path between end stations on a network eliminating loops Loops occur when alternate paths exist between hosts Loops in an extended network can cause bridges to forward traffic indefinitely resulting in increased traffic and reducing network efficiency The devices support the following Spanning Tree protocols e Classic STP Provides a single path between end stations avoiding and eliminating loops For more information on configuring Classic STP see Defining STP Global Settings on page 114 e Rapid STP Detects and uses of network topologies that provide faster spanning tree convergence without creating forwarding loops For more information on configuring Rapid STP see Configuring Rapid Spanning Tree on page 122 To open the Spanning Tree pages click Switch Spanning Tree in the tree
16. 31 6 On the wall mark the locations where the screws to hold the device must be prepared On the marked locations drill the holes and place all plugs not provided in the holes 8 Secure the device to the wall with screws not provided Ensure that the ventilation holes are not obstructed Figure 3 3 Mounting Device on a Wall o Drilled Holes Drilled Holes o 32 Dell PowerConnect 28xx Systems User Guide Connecting the Device To configure the device the device must be connected to a terminal Connecting the Device to the Network To connect to an uplink port use Category 5 Unshielded Twisted Pair UTP cables with RJ 45 connectors at both ends The RJ 45 ports on the Ethernet device support automatic Media Dependent Interface Media Dependent Interface with internal crossover wiring MDI MDIX operation under Auto Negotiation mode Standard straight through twisted pair cables can be used to connect to any other Ethernet network systems servers switches or routers that supports auto negotiation Z NOTE Do not plug a phone jack connector into an RJ 45 port This will damage the Ethernet device Use only twisted pair cables with RJ 45 connectors that conform to FCC standards Z NOTE If auto negotiation is turned off on the ports a straight through cable must be used To connect the device to the network 1 Attach one end of a Twisted Pair cable to the device s RJ 45 connector and the other end to a swi
17. Database page 2 Select a user in the User Name field 3 Define the fields Dell PowerConnect 28xx Systems User Guide 4 Click Apply Changes The user access rights and passwords are defined and the device is updated Defining a New User 1 Open the Local User Database page 2 Click Add The Add User page opens Figure 6 10 Add a User Add User 3 Define the fields 4 Click Apply Changes The new user is defined and the device is updated Displaying the Local User Table 1 Open the Local User Database page 2 Click Show All The Local User Table opens Figure 6 11 Local User Table Local User Table Dell PowerConnect 28xx Systems User Guide 69 Deleting Users 1 Open the Local User Database page 2 Click Show All The Local User Table opens Select a User Name Select the Remove check box Click Apply Changes The selected user is deleted and the device is updated Configuring RADIUS Global Parameters Remote Authorization Dial In User Service RADIUS servers provide additional security for networks To open the RADIUS Settings page click System Management Security gt RADIUS in the tree view Figure 6 12 RADIUS Settings Dell OpenManage Switch Administrator Support Help About Log Out PowerConnect 2816 10 5 225 74 RADIUS Settings Home 7 a El System RADIUS Settings General IP Addressing Pit Refresh Diagnostics E Management Se appre Add Show A
18. Define the fields 3 Click Apply Changes The software is uploaded to the device Restoring Default Settings The Restore Defaults page allows you to restore the device settings to their factory default values To open the Restore Defaults page click System File Management gt Restore Defaults in the tree view Figure 6 23 Restore Defaults Dell OpenManage Switch Administrator Support Help About Log Out DELL PowerConnect 2816 10 5 225 74 Restore Defaults ES Home E System Restore Defaults General IP Addressing Diagnostics Management Security SNMP T Restore Configuration Factory Defaults TAARAH File Management File Download File Upload DHCP Server Advanced Settings Switch Statistics RMON Qualitv of Service al 4 gt The Restore Defaults page contains the following field EA 6 05 Restore Configuration Factory Defaults Sets the device settings to their factory default values Restoring Default Settings 1 Open the Restore Defaults page 2 Check the Restore Configuration Factory Defaults checkbox 3 Click Apply Changes The settings are restored Dell PowerConnect 28xx Systems User Guide Defining DHCP Server Settings The DHCP server is used mainly for centralized control over assignment of IP addresses to attached hosts A switch can operate as either a DHCP client obtaining its own IP from a DHCP server as a DHCP server The DHCP server uses a f
19. Power Supply Connector The PowerConnect 28xx supports a single internal power supply to provide power for switching operations The internal power supply supports input voltages between 100 and 240 VAC The AC power connector is located on the back panel of the switch 26 Dell PowerConnect 28xx Systems User Guide Installing the PowerConnect Device This section contains information about device unpacking location installation and cable connections Installation Precautions A CAUTION Before performing any of the following procedures read and follow the safety instructions located in the System Information Guide included in the Dell Documentation A CAUTION Observe the following points before performing the procedures in this section Ensure that the rack or cabinet housing the device is adequately secured to prevent it from becoming unstable and or falling over Ensure that the power source circuits are properly grounded Observe and follow the service markings Do not service any device except as explained in the system documentation Opening or removing covers marked with a triangular symbol with a lighting bolt may cause electrical shock These components are to be serviced by trained service technicians only Ensure that the power cable extension cable and or plug is not damaged Ensure that the device is not exposed to water Ensure that the device is not exposed to radiators and or heat sources Ensure that the coo
20. Properties select VT 100 for Emulation mode f Select Terminal keys for Function Arrow and Ctrl keys Ensure that the setting is for Terminal keys not Windows keys Z NOTE When using HyperTerminal with Microsoft Windows 2000 Windows XP or Windows Vista ensure that you have the latest service packs installed With Windows 2000 Service Pack 2 the arrow keys function properly in HyperTerminal s VT100 emulation Go to www microsoft com for information on Windows 2000 Windows XP and Windows Vista service packs 3 Connect the female connector of the RS 232 crossover cable directly to the device Console port on the device and tighten the captive retaining screws The Console port is located on the back panel Connecting to Console Port POWER 100 240VAC C 9600 N 8 1 O Console Port AC Power Supply Interface Connecting a Device to a Power Supply 1 Connect the supplied standard AC power cable to the AC connector on the back panel 2 Do not connect the power cable to a grounded AC outlet at this time Connect the device to a power source in the steps detailed in Starting and Configuring the Device 34 Dell PowerConnect 28xx Systems User Guide Figure 3 4 Connecting to Power Supply Back Panel 3 After connecting the device to a power source confirm that the device is connected and operating correctly by examining the LEDs on the front panel Port Connections Cables and Pinout Information This
21. RMON Quality of Service MAC Address Client Name Default Router HE a Host Name Indicates the host pool name which can be a string of symbols and an integer for example piy The range is up to 32 characters IP Address Specifies the IP address that was statically assigned to the host Network Mask Specifies the pool s network mask Prefix Length Specifies the number of bits that comprise the address prefix e Client Identifier A unique identification of the client specified in dotted hexadecimal notation e g 01b6 0819 6811 72 MAC Address Specifies the MAC Address of DHCP static host e Client Name Specifies the name of the client using a standard set of ASCII characters The client name must not include the domain name The range is up to 32 characters Default Router Specifies the default router for the DHCP static host 88 Dell PowerConnect 28xx Systems User Guide e Domain Name Server Specifies the DNS server available to the DHCP client e Domain Name Specifies NetBIOS WINS Server Specifies the NetBIOS WINS server available to a Microsoft DHCP static host NetBIOS Node Type Informs the workstation how to resolve the NetBIOS name Valid node types are Broadcast IP broadcast messages are used to register and resolve NetBIOS names to IP addresses Peer to Peer Point to point communications with a NetBIOS
22. Rees L Statistics RMON Root Guard D Quality of Service LAG State Disabled Role Disabled Path Cost 1 200000000 fa Default Path Cost L Priority 128 y Designated Bridge ID N A Designated Port ID NA Designated Cost N A Forward Transitions NIA Apolv Changes zl Select a LAG The user defined LAG For more information see Defining LAG Membership on page 132 STP Enables or disables STP on the LAG Fast Link Enables Fast Link mode for the LAG If Fast Link mode is enabled for a LAG the LAG State is automatically placed in the Forwarding state when the LAG is up Fast Link mode optimizes the time it takes for the STP protocol to converge STP convergence can take 30 60 seconds in large networks Root Guard When checked prevents devices outside the network core from being assigned the spanning tree root Dell PowerConnect 28xx Systems User Guide LAG State Current STP state of a LAG If enabled the LAG state determines what forwarding action is taken on traffic If the bridge discovers a malfunctioning LAG the LAG is placed in the Broken state Possible LAG states are Disabled The LAG link is currently down Blocking The LAG is blocked and cannot be used to forward traffic or learn MAC addresses Listening The LAG is in the listening mode and cannot forward traffic or learn MAC addresses Learning The LAG is in the learning mode and cannot forward traffic but it can learn new MAC
23. Static Current ly Changes 3 Define the VLAN ID and New Bridge Multicast Address fields 4 Toggle a port to S to join the port to the selected Multicast group 5 Toggle a port to F to forbid adding specific Multicast addresses to a specific port Dell PowerConnect 28xx Systems User Guide 135 136 6 Click Apply Changes The bridge Multicast address is assigned to the Multicast group and the device is updated Defining Ports to Receive Multicast Service 1 oa fF Ww N Open the Bridge Multicast Group page Define the VLAN ID and the Bridge Multicast Address fields Toggle a port to S to join the port to the selected Multicast group Toggle a port to F to forbid adding specific Multicast addresses to a specific port Click Apply Changes The port is assigned to the Multicast group and the device is updated Assigning LAGs to Receive Multicast Service 1 oF WwW N Open the Bridge Multicast Group page Define the VLAN ID and the Bridge Multicast Address fields Toggle the LAG to S to join the LAG to the selected Multicast group Toggle the LAG to F to forbid adding specific Multicast addresses to a specific LAG Click Apply Changes The LAG is assigned to the Multicast group and the device is updated Assigning Multicast Forward All Parameters The Bridge Multicast Forward All page contains fields for attaching ports or LAGs to a device that is attached to a neighboring Multicast router switch On
24. These PowerConnect devices are ideal for the small to medium business that requires high performance network connectivity along with advanced web management features The PowerConnect management features are designed to minimize administrative management effort while enhancing and improving network traffic control System Description This section describes the hardware configurations of the PowerConnect 28xx The switches are managed by Dell s OpenManage Switch Administrator PowerConnect 2808 The following figure illustrates the PowerConnect 2808 front panel Figure 1 1 PowerConnect 2808 Front Panel DGLL 2E aes Ens mu mu mu mu Mao LJ Mu DN bla The PowerConnect 2808 supports the following ports e 8 Gigabit Ethernet copper ports PowerConnect 2816 The following figure illustrates the PowerConnect 2816 front panel Dell PowerConnect 28xx Systems User Guide 9 10 Figure 1 2 PowerConnect 2816 Front Panel Dou AE oo 3 2 8 a fe The PowerConnect 2816 supports the following ports e 16 Gigabit Ethernet copper ports PowerConnect 2824 The following figure illustrates the PowerConnect 2824 front panel Figure 1 3 PowerConnect 2824 Front Panel eco aaa K ee hs ts a ae ee
25. address Sys Object ID Specifies the vendor s authoritative identification of the network management subsystem contained in the entity Service Tag Specifies the service reference number used when servicing the device e Asset Tag 0 16 Characters Specifies the user defined device reference Serial No Specifies the device serial number e Date Specifies the current date The format is day month year for example 10 02 is November 10 2002 e Time Specifies the time The format is hour minute second for example 20 12 03 is eight twelve and three seconds in the evening System Up Time Specifies the amount of time since the last device reset The system time is displayed in the following format Days Hours Minutes and Seconds For example Defining System Information 1 Open the Asset page 2 Define the relevant fields Dell PowerConnect 28xx Systems User Guide 59 3 Click Apply Changes The system parameters are defined and the device is updated Initiating a Telnet Session 1 Open the Asset page 2 Click Telnet A Telnet session is initiated Viewing the Versions Page The Versions page contains information about the hardware and software versions currently running To open the Versions page click System gt General gt Versions in the tree view Figure 6 3 Versions Support Help About Log Out Dell OpenManage Switch Administrator 10 5 225 74 Versions E
26. addresses Forwarding The LAG is currently in the forwarding mode and it can forward traffic and learn new MAC addresses Broken The LAG is currently malfunctioning and cannot be used for forwarding traffic Role Displays the port role assigned by the STP algorithm to provide to STP paths The possible field values are Root Provides the lowest cost path to forward packets to the root switch Designated Indicates the port or LAG through which the designated switch is attached to the LAN Alternate Provides an alternate path to the root switch from the root interface Backup Provides a backup path to the designated port path toward the Spanning Tree leaves Backup ports occur only when two ports are connected in a loop by a point to point link or when a LAN has two or more connections connected to a shared segment Disabled The port is not participating in the Spanning Tree Path Cost 1 200000000 Amount the LAG contributes to the root path cost The path cost is adjusted to a higher or lower value and is used to forward traffic when a path being rerouted The path cost has a value of 1 to 200000000 If the path cost method is short the LAG cost default value is 4 If the path cost method is long the LAG cost default value is 20000 Default Path Cost When selected the LAG path cost returns to its default value Priority The priority value of the LAG The priority va
27. clicked About Contains the version and build number and Dell copyright information Log Out Logs out of the application and closes the browser window Dell PowerConnect 28xx Systems User Guide 55 Device Management Buttons Device Management buttons provide an easy method of configuring device information and includes the following Table 5 3 Device Management Buttons Button Description Apply Changes Applies changes to the device Add Adds information to tables or dialogs Telnet Starts a Telnet session Query Queries tables Show All Displays the device tables Left arrow Right arrow Moves information between lists Refresh Refreshes device information Reset All Counters Clears statistic counters Print Prints the Network Management System page and or table information Draw Creates statistics charts on the fly Starting the Application 1 Open a web browser 2 Enter the device s IP address as defined in the CLI in the address bar and press lt Enter gt For information about assigning an IP address to a device see Static IP Address and Subnet Mask 3 When the Enter Network Password window opens enter a user name and password Z NOTE The device is not configured with a default password and can be configured without entering a password For information about recovering a lost password see Password Recovery NOTE Passwords are both case sensitive and alpha numeric Z NOTE The devi
28. combo External console port 32 Features General Features Management Modes The device supports the following modes e Managed Mode Provides switch management through the web interface Unmanaged Mode In this mode the device operates as a hub with default configuration and configuration cannot be changed Secure Mode This mode keeps the existing configuration active but it prevents users from making configuration changes by removing the IP address of the device so that it becomes inaccessible for configuration For more information about the management modes see Management Modes on page 49 Head of Line Blocking Prevention Head of Line HOL blocking results in traffic delays and frame loss caused by traffic competing for the same egress port resources HOL blocking queues packets and the packets at the head of the queue are forwarded before packets at the end of the queue By default the device is configured so that the HOL blocking prevention mechanism is active at all times except when QoS Quality of Service Flow Control or Back Pressure is active on a port where the HOL blocking prevention mechanism is disabled on the whole system Back Pressure Support On half duplex links the receiving port prevents buffer overflows by occupying the link so that it is unavailable for additional incoming traffic The user may enable or disable this feature on a per port basis The default status on all ports is set
29. configured to use h node a computer always tries p node first and uses b node only if p node fails This is the default SNTP Server Specifies the time server for the DHCP client Next Server Specifies the IP address of the next server in the boot process of a DHCP client If the next server in the boot process is not configured the DHCP Server uses inbound interface helper addresses as boot servers Next Server Name Specifies the name of the next server in the boot process The server name may contain up to 64 characters Image File Name Specifies the name of the file that is used as a boot image The file name may contain up to 128 characters Excluding Addresses By default the DHCP Server assumes that all pool addresses may be assigned to DHCP clients The user can specify IP addresses that must not be used These addresses are referred to as excluded addresses A single IP address or a range of IP addresses can be excluded Dell PowerConnect 28xx Systems User Guide The Excluded Addresses page lists the excluded addresses To open the Excluded Addresses page click System gt DHCP Server gt Excluded Addresses in the tree view Figure 6 26 Excluded Addresses Dell OpenManage Switch Administrator Support Help About Log Out 10 5 225 74 Excluded Addresses S Home B System Excluded Addresses IP Addressing Diagnostics Management SNMP File Managen DHCP Server Start IP Address End IP Add
30. corrupted or invalid software image The BootP client then continuously attempts to find a BootP server by sending BootP requests to all ports on the default VLAN until a BootP server replies The information replied is then used to provide the switch system with a TFTP server IP address and a download file name The switch can then configure these values to the TFTP client and try to download a valid runtime image Spanning Tree Protocol Features Spanning Tree Protocol STP 802 1d Spanning tree is a standard Layer 2 switch requirement that allows bridges to automatically prevent and resolve L2 forwarding loops Switches exchange configuration messages using specifically formatted frames and selectively enable and disable forwarding on ports Fast Link STP can take up to 30 60 seconds to converge During this time STP detects possible loops allowing time for status changes to propagate and for relevant devices to respond 30 60 seconds is considered too long of a response time for many applications The Fast Link option bypasses this delay and can be used in network topologies where forwarding loops do not occur IEEE 802 1w Rapid Spanning Tree Spanning Tree can take 30 60 seconds for each host to decide whether its ports are actively forwarding traffic Rapid Spanning Tree RSTP detects uses of network topologies to enable faster convergence without creating forwarding loops STP Root Guard Root guard restricts the interface fro
31. default setting Example Console config if end Console Command exit configuration To exit any configuration mode to the next highest mode in the CLI mode hierarchy use the exit command in any configuration mode exit Syntax Description This command has no arguments or key words Command Mode All configuration modes Default value This command has no default setting Examples Console config if exit Console config exit Dell PowerConnect 28xx Systems User Guide 159 Console Command exit EXEC To close an active terminal session by logging off the router use the exit command in EXEC mode exit Syntax Description This command has no arguments or key words Command Mode EXEC Default value This command has no default setting Example Console gt exit Command help To display a brief description of the help system enter the help command help Syntax Description This command has no arguments or key words Command Mode All command modes Default value This command has no default setting Command interface ethernet To configure an interface type and enter interface configuration mode use the interface ethernet global configuration command interface ethernet interface Syntax Description e interface The full syntax is port 160 Dell PowerConnect 28xx Systems User Guide Parameters range e interface Valid Ethernet port
32. destination url 160 characters The following table shows keywords and URL prefixes Table A 1 Source and Destination Keywords Keyword Source or Destination image If source file represent the active image file If destination file represent the non active image file boot Boot file tftp Source or destination URL for a TFTP network server The syntax for this alias is tftp Aost directory filename The host can be IPv4 address An out of band IP address can be specified as described in the usage guidelines xmodem Source for the file from a serial connection that uses the Xmodem protocol null Null destination for copies or files You can copy a remote file to null to determine its size Command Mode Privileged EXEC Usage Guidelines The location of a file system dictates the format of the source or destination URL The entire copying process may take several minutes and differs from protocol to protocol and from network to network If the egress interface is not specified the default interface will be selected Specifying interface zone 0 is equal to not defining an egress interface Dell PowerConnect 28xx Systems User Guide 157 Understanding Invalid Combinations of Source and Destination Some invalid combinations of source and destination exist Specifically you cannot copy the following e If the source file and destination file are the same file xmodem can t be destination Can be copied t
33. device was last refreshed e Collisions Number of collisions received on the interface since the device was last refreshed Frames of xx Bytes Number of xx byte frames received on the interface since the device was last refreshed Viewing Interface Statistics 1 Open the RMON Statistics Group page 2 Select an interface type and number in the Interface field The interface statistics are displayed Viewing Charts The Chart page contains links for displaying statistics in a chart form To open the page click Statistics Charts in the tree view Viewing the CPU Utilization The CPU Utilization page contains information about the system s CPU utilization and percentage of CPU resources consumed by The range of the utilization reading is from 0 to 100 To open the CPU Utilization page click Statistics RMON gt Charts gt CPU Utilization in the tree view 142 Dell PowerConnect 28xx Systems User Guide Figure 8 2 CPU Utilization Dell OpenManage Switch Administrator Support Help About Log Out 10 5 225 74 CPU Utilization amp Home H System CPU Utilization E Switch E Statistics RMON RMON Er Charts Refresh Rate is Sec CPU Utilizat Quality of Service i ire PES re TT 8 16 17 18 19 20 Time M j E The CPU Utilization page contains the following information Refresh Rate Amount of time that passes before the statisticsare refreshed Dell PowerConnect 28xx Sys
34. e Current Flow Control The Defining LAG Parameters 1 Open the LAG Configuration page 2 Select a LAG in the LAG field 3 Define the fields 4 Click Apply Changes The LAG parameters are saved to the device Modifying LAG Parameters 1 Open the LAG Configuration page 2 Select a LAG in the LAG field 3 Modify the fields 4 Click Apply Changes The LAG parameters are saved to the device Dell PowerConnect 28xx Systems User Guide 105 106 Displaying the LAG Configuration Table 1 Open the LAG Configuration page 2 Click Show All The LAG Configuration Table opens Figure 7 10 LAG Configuration Table LAG Configuration Table Enable y Enable E feee Ere y C a eee ee Apply Changes Configuring Green Ethernet Green Ethernet also known as Energy Efficient Ethernet is an effort to make networking equipment environmentally friendly specifically by reducing power usage of Ethernet connections The following methods are supported by the device Energy Detect Auto detection of inactivity on a port and subsequent turning down of transmit power It may take about second for the cable to power up when it becomes active again Short Reach Reduction of power over Ethernet cables shorter than 40m The cable length is detected automatically with an accuracy of 10m These methods are relevant for copper cables only and are incompatible with fiber cable or when the link is set to auto se
35. information is incorrect select N to discard configuration and restart the wizard Y N Y Y Configuring SNMP management interface Contiguring user aceounie see Configuring IP and subnet 2 Thank you for using Dell Easy Setup Wizard Initial Configuration Through the Web The administrator can choose to perform device configuration via the web management instead of through the Set up wizard Basic Configuration To configure a device whose configuration is empty via web management perform the following steps 48 Dell PowerConnect 28xx Systems User Guide Connect the switch to a PC via Ethernet and set a static IP address of 192 168 2 x 255 255 255 0 where x is between 2 and 254 on the PC Connect to the switch using IP address 192 168 2 1 in your web browser The login is username admin with no password After connecting to the device use the P Interface Parameters page to define the required IP address static or DHCP for the device and its default gateway After the device is configured with new IP address connect the device to the network or to a PC with the correct subnet settings and continue configuring it via web management The IP Addressing page contains a link to the IP Interface Parameters page that is used to assign the device IP address subnet mask and default gateway and for enabling or disabling DHCP In the web management interface navigation menu at left select the S
36. it prevents users from making any further configuration changes to the switch This is done by removing the IP address of the switch so that it becomes inaccessible In Secure Mode the switch retains configuration through power cycles just like in Managed Mode To use Secure Mode configure the device in Managed Mode and then switch to Secure Mode via the web interface To exit Secure Mode press the Managed Mode button on the device to enter the Managed Mode For information about management modes see Management Modes on page 50 For information about saving Configuration files see Managing Files on page 79 To open the Secure Mode page click System gt General gt Secure Mode in the tree view Figure 6 5 Secure Mode Dell OpenManage Switch Administrator Help About Lo EA Home B System Secure Mode E General Asset Versions Reset Secure the switch configuration by selecting Secure Secure Mod IP Addressing Diagnostics Secure Management Se SNMP File Managemer DHCP Server A Entering Secure Mode 1 Open the Secure Mode page 2 Click Secure A confirmation message displays 3 Click OK The device enters Secure mode 62 Dell PowerConnect 28xx Systems User Guide Defining Device IP Addresses The IP Addressing page contains a link to the IP Interface Parameters page that is used to assign the device IP address subnet mask and default gateway and for enabling or disabling D
37. messages Current Back Pressure The currently configured Back Pressure setting Flow Control Enables or disables flow control or enables the auto negotiation of flow control on the port Operates when port is in Full duplex mode Current Flow Control The currently configured Flow Control setting MDIMDIX Allows the device to decipher between crossed and uncrossed cables Hubs and switches are deliberately wired opposite the way end stations are wired so that when a hub or switch is connected to an end station a straight through Ethernet cable can be used and the pairs are match up properly When two hubs switches are connected to each other or two end stations are connected to each other a crossover cable is used ensure that the correct pairs are connected The possible field values are Auto Used to automatically detect the cable type MDI Media Dependent Interface Used for end stations MDIX Media Dependent Interface with Crossover Used for hubs and switches Current MDI MDIX The currently configured device MDI MDIX settings Dell PowerConnect 28xx Systems User Guide e LAG Specifies if the port is part of a LAG Defining Port Parameters 1 Open the Port Configuration page 2 Select a port in the Port Field 3 Define the remaining fields 4 Click Apply Changes The port parameters are saved to the device Modifying Port Parameters 1 Open the Port Configuration page 2 Selec
38. ports with two physical connections e An RJ 45 connection for Twisted Pair TP copper cabling An SFP port for swappable optical transceiver which offers high speed 1000BASE SX or 1000BASE LX connection Z NOTE Only one of the two physical connections of a combo port can be used at any one time Port features and port controls are determined by the physical connection used The system automatically detects the media used on a combo port and utilizes the information in all the control interfaces Z NOTE The system can switch from the RJ 45 to the SFP or vice versa without resetting the device If both RJ 45 and SFP ports are present the SFP port will be the active port whereas the RJ 45 port will be disabled On the front panel is the Managed Mode LED which indicates the Ethernet switch operational status and the management mode The Fan LED indicates the device fan operations status and the Power LED on the front panel indicates whether the device is powered on or not A Mode push button located on the right side on the front panel is used to transition between management modes and to reset the device For more information about management modes and transitioning between them see Management Modes on page 49 Dell PowerConnect 28xx Systems User Guide 19 Figure 2 6 PowerConnect 2824 Back Panel CONSOLE GAS A EA P one See F Console Port AC Power Supply Interface Figure 2 7 PowerConnect 2848 Front P
39. section explains the device s physical interfaces and provides information about port connections Connector types ports and cables are summarized in Ports Connectors and Cables Copper Cable and Optical Transceiver Diagnostics are supported RJ 45 Connections for 10 100 1000BaseT Ports The 10 100 1000BaseT ports are copper twisted pair ports To establish a link for the twisted pair ports Tx pair on one cable end must be connected to the Rx pair on the other cable end and vice versa If the cabling is done such that Tx on one end is wired to Tx on the other end and Rx is wired to Rx a link is not established When selecting cables to connect the device ports to their networking peers straight through cables must be used to connect the device to a station and crossover cables must be used to connect one transmission device switch or hub to another Both the straight through and crossover cables are category 5 After a port is connected its LINK indication LED is lit Dell PowerConnect 28xx Systems User Guide 35 Table 3 1 Ports Connectors and Cables Connector Port Interface Cable RJ 45 10 100 1000BaseT Port Cat 5 The RJ 45pin number allocation for the 10 100 1000BaseT ports is listed in the table following Table 3 2 RJ 45 Pin Number Allocation for 10 100 1000BaseT Ethernet Port 36 Pin No Function 1 TxRx 1 TxRx 1 TxRx 2 TxRx 2 TxRx 3 TxRx 3 TxRx 4
40. section refers to the device when set to Managed mode See Figure 4 2 for a description of how to enter the Managed mode In managed mode the boot procedure can be monitored on the connected terminal as follows 1 Ensure that the device console port is connected to a VT 100 terminal device or VI 100 terminal emulator via the RS 232 crossover cable Locate an AC power receptacle Deactivate the AC power receptacle Connect the device to the AC receptacle oF Ww N Activate the AC power receptacle When the power is turned on with the local terminal already connected the device goes through Power On Self Test POST POST runs every time the device is initialized and checks hardware components to determine if the device is fully operational before completely booting If a critical problem is detected the program flow stops If POST passes successfully a valid executable image is loaded into RAM POST messages are displayed on the terminal and indicate test success or failure 6 The boot process begins running in less than 45 seconds when in Unmanaged mode and approximately 90 seconds when in other modes Initial Configuration Through the Set up Wizard To configure the device it must be in Management mode Z NOTE The switch is factory set in Unmanaged Mode To set the switch to Managed mode press the Mode button for up to 7 seconds In Management mode you can configure the device in the following ways Through the web m
41. that contain fields for setting security parameters for user database password and RADIUS security To open the Management Security page click System Management Security in the tree view Defining the Local User Databases The Local User Database page contains fields for defining users passwords and access levels To open the Local User Database page click System Management Security Local User Database in the tree view Figure 6 9 Local User Database Dell OpenManage Switch Administrator Support Help About Log Out DGLL PowerConnect 2848 10 5 225 88 ES Home i B System Management Security Local User Database General IP Addressing Diagnostics Management Se Local User RADIUS SNMP Fue Manageme User Name admin Advanced Settin Access Level fas Switch Statistics RMON Password 0 64 characters 4 Quality of Service Confirm Password Management Security Local User Database 0 40 apodo gal pee Remove Ej SS User Name List of users Access Level User access level Users with access level 15 are Privileged Users and only they can access and edit all pages of the OpenManage Switch Administrator e Password 0 64 Characters User defined password e Confirm Password Confirms the user defined password Remove Removes users from the User Name list when selected Assigning Access Rights to a User 1 Open the Local User
42. the type of information to be displayed If you do not specify any parameters the system displays all configuration and memory data Command Modes EXEC Usage Guidelines NOTE Avoid running multiple show tech support commands on a switch or multiple switches on the network segment Doing so may cause starvation of some time sensitive protocols like STP The show tech support command output is continuous it does not display one screen at a time To interrupt the output press Esc If you specify the config keyword the show tech support command displays the output of the following commands show clock show system show version Dell PowerConnect 28xx Systems User Guide 165 166 show system mode show ip interface show interfaces configuration show interfaces status show interfaces port channel show vlan show interfaces switchport show spanning tree show bridge multicast address table show ip igmp snooping groups show dotlx show dotlx users show interfaces counters show users show sessions show logging file show logging If you specify the memory keyword the show tech support command displays the output of the following commands flash info dir if existed or flash mapping buffers info like print os buff memory info like print os mem proc info like print os tasks Command snmp server community Use the snmp server community command to set up the community access string to permit acces
43. to OFE Dell PowerConnect 28xx Systems User Guide 11 12 Auto Negotiation Auto negotiation allows an Ethernet switch to advertise modes of operation The auto negotiation function provides the means to exchange information between two Ethernet switches that share a point to point link segment and to automatically configure both Ethernet switches to take maximum advantage of their transmission capabilities Port advertisement allows the system administrator to configure the port speeds advertised Jumbo Frames Support Jumbo frames are frames with an MTU Maximum Transmission Unit size of up to 10K bytes The Jumbo Frames Support feature utilizes the network optimally by transporting the same data using less frames The main benefits of this facility are reduced transmission overhead and reduced host processing overhead Jumbo frames are used for server to server transfers AutoMDI MDIX Support The switch automatically detects whether the cable connected to an RJ 45 port is crossed or straight through Standard wiring for end stations is Media Dependent Interface MDI and the standard wiring for hubs and switches is known as Media Dependent Interface with Crossover MDIX Auto MDI MDIX works on 10 100 1000BASE T Ethernet ports This feature is automatically enabled for the entire system and cannot be turned off by the user Flow Control Support IEEE802 3X On Full Duplex links FDX the flow control mechanism allows t
44. to pages for configuring device parameters Viewing Device Information The Asset page contains parameters for configuring general device information including the system name location and contact the system MAC Address System Object ID date time and System Up Time To open the Asset page click System gt General gt Asset in the tree view Dell PowerConnect 28xx Systems User Guide 58 Figure 6 2 Asset Dell OpenManage Switch Administrator DGLL PowerConnect 2816 Support Help About Log Out 10 5 225 74 ES Home a E System Asset E General Versions Reset Secure Mode IP Addressing System Name 0 159 Characters fie Diagnostics ras System Contact 0 159 Characters SNMP System Location 0 159 Characters File Managemer mar Addresa AORTA DHCP Server MAC Address 00 88 77 66 55 33 Advanced Settin Sys Object ID 1 3 6 1 4 1 3955 6 1 2048 1 10895 3027 Switch A Statistics RMON jaan cs Quality of Service Asset Tag 0 16 Characters Serial No 49 Date 01 Jan 00 DD MMM YY Time 18 2331 HH MM SS System Up Time 0d18h23m31s Inet Connect to textual user interface cp Dl i System Name 0 Characters Defines the user defined device name System Contact 0 Characters Specifies the name of the contact person System Location 0 Characters Specifies the location where the system is currently running MAC Address Specifies the device MAC
45. 002 eee ee 10 PowerConnect 2848 a aaa a 10 Summary of PowerConnect Models 11 Features s po aa a e A RR Ee Re n E 11 General Features 11 MAC Address Supported Features 0 13 Layer 2 Features sa scs react rass pa daue en 13 VLAN Supported Features o o 14 Spanning Tree Protocol Features o oo a 0 o 15 Class of Service CoS Features ooa a 16 Ethernet Switch Management Features o oo a a 16 2 Hardware Description 17 Switch Port Configurations 2 a a 17 PowerConnect 28xx Front and Back Panel Port Description 17 Physical Dimensions 00000000 eee eee 21 LED Definitions 0000002000000 200084 21 Powet LED ices aie hae ee ok me BA Beard ee la ad 22 Managed Mode LED 0 000 22 Fan LED 2824 2848 only 2 0 222 2 o 22 Port LEDs 4 sek ad oy ee Bee ee PRR eee ee YS oS 22 Managed Mode Button 2 2 een 23 Switch Ventilation Fan 0 2 002000 23 Cables Port Connections and Pinout Information 24 1000BASE T Cable Requirements 24 RJ 45 Connections for 10 100 1000BASE T Ports 24 SEP POTIS sag a gt eye ar es oh Gaerne CAE Rte cae My eh E E a OP He a 25 Power Connectors o o o e a a a a 26 Internal Power Supply Connector o o o ee 26 Installing the PowerConnect Device 27 In
46. 09 Gina Ezriel Took out part four in system_components gif Dell PowerConnect 28xx Systems User Guide 183 184 Dell PowerConnect 28xx Systems User Guide
47. 30 Static Hosts Table Local User Table 90 Dell PowerConnect 28xx Systems User Guide Deleting Static Hosts 1 2 Open the Static Hosts page Click Show All The Static Hosts Table page opens 3 Check the Remove checkbox next to a static host 4 Click Apply Changes The host is deleted and the device is updated Address Binding The Address Binding page displays a list of the DHCP server s allocated IP addresses and each IP address s client identifier lease expiration time and allocation type Open the Address Binding page click System gt DHCP Server Address Binding in the tree view Figure 6 31 Address Binding Dell OpenManage Switch Administrator Support Help About Log Out PowerConnect 2816 10 5 225 74 Address Binding General IP Addressing Address Binding Diagnostics Management Security SNMP File Management DHCP Server IP Address Client Identifier Lease Expiration Type Remove DHCP Server Prog 2 2 2 3 000088776655 Infinite Static M Network Pool Excluded Address Static Hosts Advanced Settings Switch Statistics RMON Quality of Service y al xl IP Address Displays the IP addresses of the clients whose bindings are displayed 0 0 0 0 0 0 4 B A E Client Identifier A unique identification of the client specified in dotted hexadecimal notation e g 01b6 0819 6811 72 Lease Expiration Displays the lease expiration date and time of the host s IP addr
48. Command Modes Global Configuration Example Console config interface ethernet gl Console config 1f Command interface port channel To configure a port channel type and enter port channel configuration mode use the interface port channel global configuration command interface port channel port channel number Syntax Description e port channel number Port channel index Parameters range e port channel number Valid port channel Command Modes Global configuration Usage Guidelines Commands under the interface range context are executed independently on each interface in the range If the command returns an error on one of the interfaces it will not stop the execution of the command on other interfaces Example Console config interface port channel 1 Console config 1f Command interface vlan To configure a vlan type and enter interface configuration mode use the interface vlan global configuration command interface vlan v an 1d Dell PowerConnect 28xx Systems User Guide 161 Syntax Description vlan id VLAN ID Parameters range vlan rd Valid VLAN Command Modes Global Configuration Usage Guidelines In case the VLAN doesn t exist ghost VLAN only partial list of the commands would be available under the interface VLAN context The commands that are supported for VLAN that doesn t exist are 1 IGMP snooping control 2 Bridge multicast configuratio
49. Configuration File Contains all Startup file commands as well as all commands entered during the current session After the device is powered down or rebooted all commands stored in the Running Configuration file are lost S Segmentation Divides LANs into separate LAN segments for bridging and routing Segmentation eliminates LAN bandwidth limitations Server A central computer that provides services to other computers on a network Services may include file storage and access to applications SNMP Simple Network Management Protocol Manages LANs SNMP based software communicates with network devices with embedded SNMP agents SNMP agents gather network activity and device status information and send the information back to a workstation SNTP Simple Network Time Protocol SNTP assures accurate network switch clock time synchronization up to the millisecond SoC System on a Chip An ASIC that contains an entire system For example a telecom SoC application can contain a microprocessor digital signal processor RAM and ROM 176 Spanning Tree Protocol Prevents loops in network traffic The Spanning Tree Protocol STP provides tree topography for any arrangement of bridges STP provides one path between end stations on a network eliminating loops Startup Configuration Retains the exact device configuration when the device is powered down or rebooted Subnet Sub network Subnets are portion
50. Dell PowerConnect 28xx Systems User Guide www dell com support dell com Notes Notices and Cautions Z NOTE A NOTE indicates important information that helps you make better use of your computer NOTICE A NOTICE indicates either potential damage to hardware or loss of data and tells you how to avoid the problem A CAUTION A CAUTION indicates a potential for property damage personal injury or death Information in this document is subject to change without notice 2012 Dell Inc All rights reserved Reproduction in any manner whatsoever without the written permission of Dell Inc is strictly forbidden Trademarks used in this text Dell Dell OpenManage the DELL logo Inspiron Dell Precision Dimension OptiPlex PowerConnect PowerApp PowerVault Axim DellNet and Latitude are trademarks of Dell Inc Microsoft and Windows are either trademarks or registered trademarks of Microsoft Corporation in the United States and or other countries Other trademarks and trade names may be used in this document to refer to either the entities claiming the marks and names or their products Dell Inc disclaims any proprietary interest in trademarks and trade names other than its own March 4 2012 Rev A04 Contents 1 Introduction 4 444624 4446684 8646444 442 dee 9 System Description 2 ee 9 PowerConnect 2808 2 2 ee 9 PowerConnect 2816 2 0 0 0 0 00000 0b eee 9 PowerConnect 2824 0 0 0 0 00 00
51. Display the Port Based Authentication page 2 Click Show All The Port Based Authentication Table opens Dell PowerConnect 28xx Systems User Guide 95 96 Figure 7 2 Port Based Authentication Table Port based Authentication Table 802 1xOnly y 802 1x Only y 802 1xOnly y 802 1xOnly y 802 1xOnly y 802 1xOnly y Disable y Disable y f N a 4 Disable y Disable y Disable y Disable y Disable y Disable y a 4 Bema AC Disable y Disable y 4 Disable y Disable y orized y 802 1xOnty j Disable y Disable y 802 1xOnly y 802 1xOnly y 802 1xOnly y 802 1xOnly y 802 1x Only y 802 1xOnly y 802 1xOnly g 802 1xOnly Disable 7 Disable y i i Termination Cause The reason for which the port authentication was terminated orized y Disable y Disable y orized y Disable 7 Disable y Disable y Disable y orized 7 Disable y Disable y orized y Disable y Disable y orized y Disable y Disable y orized y Disable y Disable y a 4 Copy To Checkbox Copies port parameters from one port to the selected ports Select All Selects all ports in the Port Based Authentication Table Copying Parameters in the Port Based Authentication Table 1 Open the Port Based Authentication page 2 Click Show All The Port Based Authentication Table opens Select the interface in the Copy Parameters from field Select an interface in the Port Based Authent
52. GMP Snooping Table 1 2 Open the IGMP Snooping Click Show All The IGMP Snooping Table opens Figure 7 31 IGMP Snooping Table IGMP Snooping Table Enable v Enable Enable 140 Dell PowerConnect 28xx Systems User Guide Viewing Statistics The Statistic pages contain links to device information for RMON and CPU utilization Viewing RMON Statistics Remote Monitoring RMON contains links for viewing network information from a remote location To open the RMON page click Statistics RMON RMON in the tree view Viewing RMON Statistics Group The RMON Statistics Group page contains fields for viewing information about device utilization and errors that occurred on the device To open the RMON Statistics Group page click Statistic RMON gt RMON Statistics in the tree view Figure 8 1 RMON Statistics Group Dell OpenManage Switch Administrator Support Help About Log Ou PowerConnect 28 10 5 225 74 RMON Statistics Group S Home ve H System RMON Statistics Group E Switch Statistics RMON E RMON H Charts Quality of Service Interface e Pot lg cu liz Refresh Rate No Refresh Dropped packets 0 Received Bytes Octets 0 Received Packets 0 Broadcast Packets Received 0 Multicast Packets Received 0 e Interface Specifies the port or LAG for which statistics are displayed Refresh Rate Amount of time that passes before the statistics are refreshed e Number of dropped th
53. HCP To open the IP Addressing page click System gt IP Addressing in the tree view Defining IP Interface Parameters To open the IP Interface Parameters page click System IP Addressing gt IP Interface Parameters in the tree view Figure 6 6 IP Interface Parameters Dell OpenManage Switch Administrator Support Help About Log Out 10 5 234 230 IP Interface Parameters System IP Interface Parameters h El El Statistics RMON Quality of Service DHCP Disable IP Address 10 5 234 230 KXXX Subnet Mask 255 255 255 0 KXXX Default Gateway 10 5 234 254 KXXX DHCP The DHCP client can be enabled to acquire the network configuration dynamically The DHCP default value is Disable This field enables the DHCP client IP Address Specifies the IP Address currently assigned to the device Subnet Mask Specifies the subnet mask of the IP Address currently assigned to the device Default Gateway Specifies the Default Gateway Address currently assigned to the device Setting static IP Interface parameters 1 Open the IP Interface Parameters page 2 Set the IP Address Subnet Mask and Default Gateway 3 Click Apply Changes The static interface parameters are set and the device is updated Dell PowerConnect 28xx Systems User Guide 63 Running Cable Diagnostics The Diagnostics section contains links to pages for performing virtual cable tests on copper cables and optical transceiver
54. IP protocol ASCII terminals can be virtually connected to the local device through a TCP IP protocol network Telnet is an alternative to a local login terminal where a remote login is required The device supports up to four simultaneous Telnet sessions All CLI commands can be used over a telnet session To start a Telnet session 1 Select Start gt Run The Run window opens Dell PowerConnect 28xx Systems User Guide 153 2 Inthe Run window type Telnet lt IP address gt in the Open field 3 Click OK to begin the Telnet session Using the CLI This section provides information for using the CLI Command Mode Overview The CLI is divided into command modes Each command mode has a specific command set Entering a question mark at the console prompt displays a list of commands available for that particular command mode In each mode a specific command is used to navigate from one command mode to another During the CLI session initialization the CLI mode is the User EXEC mode Only a limited subset of commands are available in the User EXEC mode This level is reserved for tasks that do not change the console configuration and is used to access configuration sub systems such as the CLI To enter the next level the Privileged EXEC mode a password is required if configured The Privileged EXEC mode provides access to the device global configuration For specific global configurations within the device enter the next
55. LAGs see Defining LAG Membership LAN Local Area Networks A network contained within a single room building campus or other limited geographical area Layer 2 Data Link Layer or MAC Layer Contains the physical address of a client or server station Layer 2 processing is faster than Layer 3 processing because there is less information to process Layer 4 Establishes a connections and ensures that all data arrives to their destination Packets inspected at the Layer 4 level are analyzed and forwarding decisions based on their applications Load Balancing Enables the even distribution of data and or processing packets across available network resources For example load balancing may distribute the incoming packets evenly to all servers or redirect the packets to the next available server M MAC Address Media Access Control Address The MAC Address is a hardware specific address that identifies each network node MAC Address Learning MAC Address Learning characterizes a learning bridge in which the packet s source MAC address is recorded Packets destined for that address are forwarded only to the bridge interface on which that address is located Packets addressed to unknown addresses are forwarded to every bridge interface MAC Address Learning minimizes traffic on the attached LANs MAC Layer A sub layer of the Data Link Control DTL layer Mask A filter that includes or excludes certain values for e
56. Log Out PowerConnect 2824 10 5 225 74 VLAN LAG Settings amp Home H System VLAN LAG Settings B Switch Network Securit Ports Address Tables Spanning Tree El VLAN VLAN Memb Port Settings mem LAC hz Link Aggregatior PVID 1 4095 fi 4095 is the Discard VLAN Multicast Suppo Amia E se Statistics RMON Frame Type AtA Quality of Service Ingress Filtering Enable y Al Sl LAG The LAG number included in the VLAN e PVID Assigns a VLAN ID to untagged packets The possible field values are 1 4095 VLAN 4095 is defined as per standard and industry practice as the Discard VLAN Packets classified to this VLAN are dropped Frame Type Packet type accepted by the LAG Possible values are Admit Tag Only Only tagged packets are accepted by the LAG Admit All Tagged and untagged packets are both accepted by the LAG Ingress Filtering Enables or disables Ingress filtering by the LAG Ingress filtering discards packets that are destined to VLANs of which the specific is not a member Assigning VLAN LAG Settings 1 Open the VLAN LAG Setting page 2 Select a LAG from the LAG drop down menu and complete the fields on the page 3 Click Apply Changes The VLAN LAG parameters are defined and the device is updated Displaying the VLAN LAG Table 1 Open the VLAN LAG Setting page 2 Click Show All The VLAN LAG Table opens 130 Dell PowerConnect 28xx Systems User Gu
57. Modifying STP Global Parameters 1 2 3 Open the STP Global Settings page Detine the fields in the dialog Click Apply Changes The STP parameters are modified and the device is updated Dell PowerConnect 28xx Systems User Guide Defining STP Port Settings The STP Port Settings page contains fields for assigning STP properties to individual ports To open the STP Port Settings page click Switch Spanning Tree gt Port Settings in the tree view Figure 7 17 STP Port Settings _ Dell OpenManage Switch Administrator Support Help About Log Out DEAL PowerConnect 2816 10 5 225 74 STP Port Settings S Home H System STP Port Settings Ei Switch Network Security Ports Address Tables E Spanning Tree Global Settings i STE Te ie selena Pr giv pid Spanning Tree VLAN STP Disable y Link Aggregation Fastlane Vv EH Multicast Support Statistics RMON Root Guard m Quality of Service Port State Disabled Role Disabled Speed 1000M Path Cost 1 200000000 fico Default Path Cost E Priority 128 Designated Bridge ID N A Designated Port ID N A Designated Cost NA Forward Transitinns N A E e Select a Port Port on which STP is enabled e STP Enables or disables STP on the port Fast Link When selected enables Fast Link mode for the port If Fast Link mode is enabled for a port the Port State is automatically placed in the Forwarding state when the port link is up Fast Link
58. S Home Versions Brt Refresh System B General Asset Reset Secure Mo IP Addressing Software Version 1 0 0 21 1 0 0 10 Diagnostics Ban Venn Management SNMP Hardware Version 00 00 01 File Manacor al Software Version The current software version running on the device BE Boot Version The current Boot version running on the device Hardware Version The current hardware version 60 Dell PowerConnect 28xx Systems User Guide Resetting the Device The Reset page enables the device to be reset from a remote location For more information about saved Configuration files see Managing Files on page 79 To open the Reset page click System gt General gt Reset in the tree view Figure 6 4 Reset Dell OpenManage Switch Administrator Support Help About Log Out PowerConnect 281 10 5 225 74 Reset SI Home E System Reset E General Asset Pot Refiesh Versions p Reset the switch by selecting Reset Secure Mode m E Resetting the Device 1 Open the Reset page 2 Click reset A confirmation message displays 3 Click OK The device is reset After the device is reset a prompt for a user name and password displays 4 Enter a user name and password to reconnect to the Web Interface Dell PowerConnect 28xx Systems User Guide 61 Entering Secure Mode The Secure Mode page allows you to put the device in the Secure management mode Once enabled
59. Specifies the VLAN ID IGMP Snooping Status Enables or disables IGMP snooping on the VLAN e Auto Learn Enables or disables Auto Learn on the device IGMP QOuerier Status Enables or disables the IGMP Querier The IGMP Querier simulates the behavior of a multicast router allowing snooping of the layer 2 multicast domain even though there is no multicast router e Querier IP Address IP address of the IGMP Querier Use either use the VLAN s IP Interface address or define a unique IP address which will be used as a source address of Querier Host Timeout 1 2147483647 Time before an IGMP snooping entry is aged out The default time is 260 seconds Multicast Router Timeout 1 2147483647 Time before aging out a Multicast router entry The default value is 300 seconds La Leave Timeout 0 2147483647 Time in seconds after a port leave message is received before the entry is aged out User defined enables a user definable timeout period and Immediate Leave specifies an immediate timeout period The default timeout is 10 seconds Dell PowerConnect 28xx Systems User Guide 139 Enabling IGMP Snooping on the Device 1 oa Ff O N Open the IGMP Snooping page Select the VLAN ID for the device on which IGMP snooping needs to be enabled Select Enable in the IGMP Snooping Status field Complete the fields on the page Click Apply Changes IGMP snooping is enabled on the device Displaying the I
60. Table 2 3 Fan LED Indications LED Color Description Green Solid All fans are operating correctly Red Solid One or more fans have failed Port LEDs 10 100 1000BASE T Port LEDs Each 10 100 1000BASE T port has two LEDs Speed Link Activity is indicated on the left LED and the duplex mode is indicated on the right LED The following figure illustrates the RJ 45 10 100 1000BASE T LEDs Dell PowerConnect 28xx Systems User Guide Figure 2 9 RJ 45 Copper based 10 100 1000BASE T LEDs in gt SPD LNK ACT FDX HDX Se The RJ 45 LED indications are described in the following table Table 2 4 RJ 45 Copper based 10 100 1000BASE T LED Indications LED Color Description Left LED Green Solid The port is linked at 1000 Mbps Green Flashing The port is transmitting or receiving data at 1000 Mbps Amber Solid The port is linked at either 10 or 100 Mbps Amber Flashing The port is transmitting or receiving data at 10 or 100 Mbps Off No link is established Right LED Green Solid The port is currently transmitting in Full Duplex mode Off The port is operating in Half Duplex mode SFP Port LED The following table describes the SFP LED indications Table 2 5 SFP LED Indications LED Color Description Green Solid Link is established Green Flashing Activity is occurring Off No link is established Managed Mode Button The PowerConnect 28xx has a Mode push button on the front panel The Mode button i
61. ___ lt lt lt _ ___ Switch Server IP Address COSO Statistics RMON i E eea Eora Source File Name 1 159 Characters Destination File Name Sofware Image E jon Download Server IP Address X X X X Source File Name Dl Firmware Download The Firmware file is downloaded If Firmware Download is selected the Configuration Download fields are grayed out e Configuration Download The Configuration file is downloaded If Configuration Download is selected the Firmware Download fields are grayed out Download via TFTP Enables initiating an image download via the TFTP server Download via HTTP Enables initiating an image download via the HTTP server Firmware Download Server IP Address The Server IP Address from which the firmware files are downloaded e Source File Name Indicates the file to be downloaded e Destination File Name The destination file to which the file is downloaded The possible field values are Software Image Downloads the software image file Boot Code Downloads the boot file 80 Dell PowerConnect 28xx Systems User Guide Configuration Download Server IP Address The Server IP Address from which the configuration files are downloaded Source File Name Indicates the configuration files to be downloaded During the image file download a dialog box opens which displays the download progress
62. a single host to authorize multiple hosts for single session access to the system Multiple Session Enables a single authorized host for multiple session access to the system Action on Single Host Violation Defines the action to be applied to packets arriving in single host mode from a host whose MAC address is not the client supplicant MAC address The Action on Single Host Violation field can be defined only if the Multiple Hosts field is defined as Disable The possible field values are Forward Forwards the packets from an unknown source however the MAC address is not learned Discard Discards the packets from any unlearned source This is the default value Shutdown Discards the packet from any unlearned source and locks the port Ports remain locked until they are activated or the device is reset Traps Enables or disables sending traps to the host if a violation occurs Dell PowerConnect 28xx Systems User Guide 97 Trap Frequency 1 1000000 Sec Defines the time period by which traps are sent to the host The Trap Frequency 1 1000000 field can be defined only if the Multiple Hosts field is defined as Disable The default is 10 seconds Status The host status The possible field values are Unauthorized Clients supplicants have full port access Authorized Cents supplicants have limited port access Number of Violations The number of packets that arrived o
63. agement Se SNMP EH File Managemer Subnet IP Address ti DHCP Server E 255 255 255 224 Mhencod Satia Network Mask 255 255 255 224 Switch C Prefix Length 27 Statistics RMON pozi Quality aF Sor co Address Pool Start 2 221 Address Pool End 2 2 2 30 Lease Duration Days 1 Hours oo Minutes oo y C Infinite Used Pool s Addresses 0 Default Router 2 2 22 Domain Name Server al gt Domain Name xl Subnet IP Address Specifies the IP address of the subnet in which the network pool resides Network Mask Specifies the pool s network mask e Prefix Length Specifies the number of bits that comprise the address prefix Address Pool Start Specifies the first IP address in the range of the network pool Address Pool End Specifies the last IP address in the range of the network pool Lease Duration Specifies the amount of time a DHCP client can use an IP address from this pool The total lease duration is 4294967295 seconds i e 49710 2696 days Thus a lease of 49710 days 0 hours 0 minutes and 0 seconds is a legal value while a lease of 49710 days 23 hours 59 minutes and 59 seconds results in an Out of Range alert Dell PowerConnect 28xx Systems User Guide 85 86 Days Specifies the duration of the lease in number of days The range is 0 to 49710 days Hours Specifies the number of hours in the lease A days value must be supplied before an hours value can be added T
64. al port Each Aggregated Link has an Aggregated Link Port Type including Gigabit Ethernet ports Ports can be added to an Aggregated Link only if they are the same port type When ports are removed from an Aggregated Links the ports revert to the original port settings To open the Link Aggregation page click Switch gt Link Aggregation in the tree view Dell PowerConnect 28xx Systems User Guide 131 Defining LAG Membership The LAG Membership page contains fields for assigning ports to LAGs LAGs can include up to eight ports When a port is added to a LAG the port acquires the LAG s properties If the port cannot be configured with the LAG properties a trap is generated and the port operates with its default settings The LAG Membership page contains fields for assigning ports to LAGs To open the LAG Membership page click Switch gt Link Aggregation LAG Membership in the tree view Figure 7 25 LAG Membership Dell OpenManage Switch Administrator Support Help About Log Out PowerConnect 2816 10 5 225 74 LAG Membership Home B System LAG Membership E Switch Network Security Ports Address Tables Spanning Tree Ports VLAN ai ein 1 1 eee et a 1 Lacij DDD Link Aggregation E LAG Multicast Support H Statistics RMON Quality of Service E LAG Addsa port to a LAG and indicates the specific LAG to which the port belongs Configuring a Port to a LAG 1 Open the LAG Members
65. anagement application described in Initial Configuration Through the Web on page 48 Through the Set up wizard as described below Z NOTE The initial simple configuration uses the following assumptions e The PowerConnect device was never configured before and is in the same state as when you received it 44 Dell PowerConnect 28xx Systems User Guide e The PowerConnect device booted successfully e The console connection is established and the console prompt is displayed on the screen of a VT100 terminal device Press the lt Enter gt key several times to verify that the prompt displays correctly The system prompts you to use the Set up wizard when the device boots up for the first time or if the configuration file is empty The Setup Wizard provides guidance through the initial device configuration and EZ You gets the device up and running as quickly as possible NOTE Obtain the following information from your network administrator before configuring the device e SNMP Community String and SNMP Management System IP address optional e Username and password e The IP address to be assigned to the VLAN 1 interface through which the device is to be managed by default every external and internal port is a member of the VLAN 1 e The IP subnet mask for the network e The default gateway next hop router IP address for configuring the default route can skip using the setup wizard and configure the de
66. anel Combo Ports j l Managed Fan Power 1000BaseT Ports 1 3 5 7 47 LED LED LED Fee SSeS ee dE celda BN Nal Nala a all al al la la i 1000BaseT Ports 2 4 6 8 48 SFP Ports Mode Es l l l l l P On the front panel there are 48 ports which are numbered 1 to 48 top down and left to right On each port there are LEDs to indicate the port status There are four SFP Small Form Factor Plugable ports designated as ports 45 46 47 and 48 for fiber connection The four combo ports are logical ports with two physical connections e An RJ 45 connection for Twisted Pair TP copper cabling An SFP port for swappable optical transceiver which offers high speed 1000BASE SX or 1000BASE LX connection Z NOTE Only one of the two physical connections of a combo port can be used at any one time Port features and port controls are determined by the physical connection used The system automatically detects the media used on a combo port and utilizes the information in all the control interfaces K NOTE The system can switc
67. at have occurred on the interface since the device was last refreshed Dell PowerConnect 28xx Systems User Guide 141 e Received Bytes Octets Number of octets received on the interface since the device was last refreshed This number includes bad packets and FCS octets but excludes framing bits e Received Packets Number of packets received on the interface including bad packets Multicast and broadcast packets since the device was last refreshed Broadcast Packets Received Number of good broadcast packets received on the interface since the device was last refreshed This number does not include Multicast packets e Multicast Packets Received Number of good Multicast packets received on the interface since the device was last refreshed e CRC amp Align Errors Number of CRC and Align errors that have occurred on the interface since the device was last refreshed e Undersize Packets Number of undersized packets less than 64 octets received on the interface since the device was last refreshed e Oversize Packets Number of oversized packets over 1518 octets received on the interface since the device was last refreshed Fragments Number of fragments packets with less than 64 octets excluding framing bits but including FCS octets received on the interface since the device was last refreshed e Jabbers Number of jabbers packets longer than 1518 octets received on the interface since the
68. ategory 5 and comply with the IEEE 802 3ab standards RJ 45 Connections for 10 100 1000BASE T Ports The 10 100 1000BASE TI ports are copper Twisted Pair ports Table 2 6 Port Default Settings Connector Port Interface Cable RJ 45 10 100 1000BASE T Port Cat 5 The following figure illustrates the RJ 45 pin connector pin numbers Figure 2 10 RJ 45 Pin Numbers La 1 1 The RJ 45 pin number allocation for the 10 100 1000BASE T ports is listed in the following table Table 2 7 RJ 45 Pin Number Allocation for 10 100 1000BASE T Ethernet Port PinNo Function l TxRx 1 TxRx l TxRx 2 TxRx 2 TxRx 3 WA eR E Dell PowerConnect 28xx Systems User Guide Table 2 7 RJ 45 Pin Number Allocation for 10 100 1000BASE T Ethernet Port PinNo Function 6 TxRx 3 7 TxRx 4 8 TxRx 4 SFP Ports The PowerConnect 2824 switch supports two SFP transceivers combo ports and the PowerConnect 2848 switch supports four SFP transceivers combo ports for various fiber based modules 1000BASE SX or 1000BASE LX Only one of the two physical connections of a combo port can be used at any time The system can switch from the RJ 45 to the SFP or vice versa without a system reset The system automatically detects the media used on a combo port and utilizes this information in the control interfaces PowerConnect 2824 switch supports SFP diagnostics The optical transceiver provides access to a set of parameters that can b
69. bership E Switch Network Security Ports Address Tables Spanning Tree VLAN taue T Port Settings slap patina Show VLAN VLANID 1 C VLANName Z regati Multicast Support VLAN Name 0 32 Characters See Unauthorized Users Disable 2 Quality of Service HE Remove VLAN z Ports 1234667 8 9 1 1 12 13 14 15 16 Static E Curent PUJA ul ulu ul uj ul u u LAGs As gt ites a B e Show VLAN Lists and displays specific VLAN information according to VLAN ID or VLAN name VLAN Name The user defined VLAN name e Unauthorized Users Enables or disables unauthorized users from accessing a VLAN Remove VLAN When selected removes the VLAN from the VLAN Membership Table Adding New VLANs 1 Open the VLAN Membership page 2 Click Add The Create New VLAN page opens Dell PowerConnect 28xx Systems User Guide 125 126 Figure 7 21 Create New VLAN Create New VLAN Refresh VLAN ID 2 4094 VLAN Name 0 32 characters Authentication Not Required Disable han 3 Enter the VLAN ID and name 4 Click Apply Changes The new VLAN is added and the device is updated Modifying VLAN Membership Groups 1 2 3 4 Open the VLAN Membership page Select a VLAN from the Show VLAN drop down menu Modify the fields as desired Click Apply Changes The VLAN membership information is modified and the device is updated Deleting VLAN M
70. bled on the configured port Current Port Speed The actual currently configured port speed bps Admin Duplex The port duplex mode can be either Full or Half Full indicates that the interface supports transmission between the device and its link partner in both directions simultaneously Half indicates that the interface supports transmission between the device and the client in only one direction at a time Current Duplex Mode The currently configured port duplex mode Auto Negotiation Enables Auto Negotiation on the port Auto Negotiation is a protocol between two link partners that enables a port to advertise its transmission rate duplex mode and flow control abilities to its partner Current Auto Negotiation The currently configured Auto Negotiation setting Admin Advertisement The speed that the port advertises Options include Maximum Capacity 10 10 MB Full Duplex 100 MB Half Duplex 100 MB Full Duplex and 1000 MB Full Duplex Current Advertisement The port advertises its speed to its neighbor port to start the negotiation process The possible field values are those specified in the Admin Advertisement field Neighbor Advertisement Indicates the neighboring port s advertisement settings The field values are identical to the Admin Advertisement field values Back Pressure Enables Back Pressure mode on the port Back Pressure mode is used with Half Duplex mode to disable ports from receiving
71. ce CoS Global Parameters CoS to Queue in the tree view Figure 9 5 CoS to Queue Mapping Table Dell OpenManage Switch Administrator Support Help About Log Out PowerConnect 2816 10 5 225 74 CoS to Queue Mapping Table S Home 7 E El System CoS to Queue Mapping Table E Switch Statistics RMON E Quality of Service B CoS Global Parameters CoS Settings Class of Service Queue Interface Settings 0 1 gt Queue Settings 4 fi y CoS to Queue z E DSCP to Queue 3 2 4 E 5 3 5 6 4 7 pal Restore Defaults j A E E e Class of Service Specifies the CoS priority tag values where zero is the lowest value and 7 is the highest value Queue The traffic forwarding queue to which the CoS priority is mapped Four traffic priority queues are supported Restore Defaults Restores the device factory defaults for mapping CoS values to a forwarding queue Mapping a CoS value to a Queue 1 Open the CoS to Queue Mapping Table page 2 Select a CoS entry 3 Define the queue number in the Queue field 4 Click Apply Changes The CoS value is mapped to a queue and the device is updated 150Dell PowerConnect 28xx Systems User Guide Mapping DSCP Values to Queues The DSCP to Queue page provides fields for defining output queue to specific DSCP fields For the list of the DSCP default queue settings see DSCP to Queue Mapping Table Default Values on page 145 To open the DSCP to Queue page click Quality of Servic
72. ce Configuration Mode Interface configuration commands modify specific IP interface settings including bridge group description etc Interface Mode The Interface mode contains commands that configure the interface The Global Configuration mode command interfac thernet is used to enter the interface configuration mode The following is an example of the Interface mode prompt console gt enable console configure console config interfac thernet gl8 console config 1f VLAN Mode The VLAN mode contains commands to create and configure a VLAN as a whole for example to create a VLAN and apply an IP address to the VLAN The following is an example of the VLAN mode prompt Console config interface vlan 1 Console config 1f Port Channel Mode The Port Channel mode contains commands for configuring Link Aggregation Groups LAG The following is an example of the Port Channel mode prompt Console config interface port channel 1 Console config 1f Dell PowerConnect 28xx Systems User Guide CLI Commands Command copy To copy any file from a source to a destination use the copy Privileged EXEC command copy source url destination url Syntax Description e source url The location URL or reserved keyword of the source file to be copied e destination url The destination URL or reserved keyword of the destination file Parameters Range e source url 160 characters e
73. ce IGMP Snooping is enabled Multicast packets are forwarded to the appropriate port or VLAN To open the Bridge Multicast Forward All page click Switch Multicast Support Bridge Multicast Forward All page in the tree view Dell PowerConnect 28xx Systems User Guide Figure 7 29 Bridge Multicast Forward All Dell OpenManage Switch Administrator Support Help About Log Out PowerConnect 2816 10 5 225 74 Bridge Multicast Forward All S Home z E H System Bridge Multicast Forward All E Switch Network Security Ports Address Tables Spanning Tree VLAN VLAN ID 15 Link Aggregation Multicast Support Global Parameters Bridge Multicast Gro Bridge Multicast Fo Ports IGMP Snooping C D E Bere E Te a a H Statistics RMON Static Quality of Service D 0 4 0 0 0 0 Current D LAGs TADA al gt Curent x VLAN ID Identifies a VLAN Ports Ports that can be added to a Multicast service LAGs LAGs that can be added to a Multicast service The contains the settings for managing router and port settings Port Control Definition F The port LAG is excluded from this Multicast group S Attaches the port to the Multicast router or switch as a static port Blank The port is not attached to a Multicast router or switch Dell PowerConnect 28xx Systems User Guide 137 138 Attaching a Port to a Multicast Router or Switch 1
74. ce can be managed via web interface only in Managed mode For more information about management modes see Management Modes on page 51 4 Click OK The Dell PowerConnect OpenManage TM Switch Administrator home page opens Access Levels When you login to the device you are automatically assigned one of the following modes based upon the access level assigned to you 56 Dell PowerConnect 28xx Systems User Guide Management This is a read write mode where you can see and edit all pages of the interface e Monitor This is a read only mode where you can see a subset of the interface pages but you cannot edit them For more information about setting the access level see Defining the Local User Databases on page 68 Dell PowerConnect 28xx Systems User Guide 57 Configuring System Information This section provides information for defining system parameters including security features downloading device software and resetting the device To open the System page click System in the tree view Figure 6 1 System Dell OpenManage Switch Administrator Support Help About Log Out PowerConnect 2816 10 5 225 74 srl Click on the Component item to view its details Switch Statistics RMON Component Quality of Service General IP Addressing Diagnostics Management Security SNMP Be File Management DHCP Server n ings Defining General Device Information The General page contains links
75. ce does not have an IP address STP is disabled All ports belong to a single VLAN There is no web management interface The CLI works in Debug mode only Default configuration is used Managed Mode LED is OFF Return to Managed mode by pressing the Mode button on the device for up to 7 seconds e Secure Mode In this mode This mode can be entered only from the Web management The device retains the existing configuration active but it prevents users from making configuration changes by removing the IP address of the device so that it becomes inaccessible for configuration No web management interface is available and the CLI works in Debug mode only Managed Mode LED is OFF Return to Managed mode by pressing the Mode button on the device for up to 7 seconds All modes are maintained throughout power cycles The Managed Mode LED shows the current mode Dell PowerConnect 28xx Systems User Guide 41 Transitioning Between Modes Figure 4 5 shows the transition between Managed Secure and Unmanaged operating modes Figure 4 2 Transitioning Between Management Modes Device is in Management Mode User presses Managed Mode button for less than 7 seconds User selects Web option to go to Secure mode Remove management IP from switch it is no longer manageable Device reboots in Unmanaged mode and switch operates as a true unmanaged switch Managed M
76. corresponding entry in the route table Examples Console gt ping 10 1 1 1 Pinging 10 1 1 1 with 64 bytes of data 64 bytes from 10 1 1 1 icmp seq 0 time 11 ms 64 bytes from 10 1 1 1 icmp seg 1 time 8 ms 64 bytes from 10 1 1 1 icmp seq 2 time 8 ms 64 bytes from 10 1 1 1 icmp seq 3 time 7 ms 10 1 1 1 PING Statistics 4 packets transmitted 4 packets received 0 packet loss round trip ms min avg max 7 8 11 Console gt ping yahoo com Pinging yahoo com 66 218 71 198 with 64 bytes of data 64 bytes from 10 1 1 1 icmp seq 0 time 11 ms Dell PowerConnect 28xx Systems User Guide 64 bytes from 10 1 1 1 icmp seg 1 time 8 ms 64 bytes from 10 1 1 1 icmp seq 2 time 8 ms 64 bytes from 10 1 1 1 icmp seq 3 time 7 ms 10 1 1 1 PING Statistics ae 4 packets transmitted 4 packets received 0 packet loss round trip ms min avg max 7 8 11 Command show tech support command To display system and configuration information you can provide to the Technical Assistance Center when reporting a problem use the show tech support command show tech support config memory Syntax Description e memory Optional Displays memory and processor state data e config Optional Displays switch configuration within the CLI commands supported on the device Defaults By default this command displays the output for technical support related show commands Use keywords to specify
77. d mode via the use of the Managed Mode button results in the switch automatically rebooting and returning to Managed mode while running the saved configuration if no configuration exists then the default configuration is used Transition to managed mode on PC2808 devices e When returning to Managed mode from either Unmanaged or Secure mode the Restore Saved Configuration page appears This page can be used to retrieve a saved configuration You can also change the device IP address using the following page Figure 4 3 Restore Saved Configuration Restore Saved Configuration Restore Saved Configuration 1119216821 i Local Configuration No saved configuration is loaded Server IP Address File Name Loads a previously saved configuration Dell PowerConnect 28xx Systems User Guide 43 Use Saved IP User Name Password When restoring local configuration this option uses the IP address user name and password that were automatically saved when you exited Managed mode When restoring a saved configuration this option uses the IP address user name and password inside the saved configuration Use Current IP User Name Password When restoring local configuration this option uses the system default IP address user name and password Apply Changes The selected configuration is restored and the device reboots Booting the Device Managed Mode The procedure described in this
78. d not defined by physical attributes VLANs function at Layer 2 Since VLANs isolate traffic within the VLAN a Layer 3 router functioning router is needed to allows traffic flow between VLANs Layer 3 routers identify segments and coordinate with VLANs VLANs are broadcast and Multicast domains Broadcast and Multicast traffic is transmitted only in the VLAN in which the traffic is generated VLAN tagging provides a method of transferring VLAN information between VLAN groups VLAN tagging attaches a tag to packet headers The VLAN tag indicates to which VLAN the packet belongs VLAN tags are attached to the packet by either the end station or by the network device VLAN tags also contains VLAN network priority information Combining VLANs and GVRP enables the automatic dispersal of VLAN information To open the VLAN page click Switch VLAN in the tree view Defining VLAN Members The VLAN Membership page contains fields for defining The device supports VLANs All ports must have a defined PVID If no other value is configured the default VLAN PVID is used VLAN number 1 is the default VLAN and cannot be deleted from the system To open the VLAN Membership page click Switch gt VLAN gt VLAN Membership in the tree view Dell PowerConnect 28xx Systems User Guide Figure 7 20 VLAN Membership Dell OpenManage Switch Administrator Support Help About Log Out PowerConnect 2816 10 5 225 74 VLAN Membership I gt pire VLAN Mem
79. d port path toward the Spanning Tree leaves Backup ports occur only when two ports are connected in a loop by a point to point link or when a LAN has two or more connections connected to a shared segment Disabled The port is not participating in the Spanning Tree Speed Speed at which the port is operating Path Cost 1 200000000 The port contribution to the root path cost The path cost is adjusted to a higher or lower value and is used to forward traffic when a path being rerouted Default Path Cost The default path cost of the port is automatically set by the port speed and the default path cost method The default values for long path costs are Ethernet 2000000 Fast Ethernet 200000 Gigabit Ethernet 20000 The default values for short path costs short path costs are the default are Ethernet 100 Fast Ethernet 19 Gigabit Ethernet 4 Dell PowerConnect 28xx Systems User Guide Priority The priority value of the port The priority value influences the port choice when a bridge has two ports connected in a loop The priority value is between 0 240 The priority value is provided in increments of 16 Designated Bridge ID The bridge priority and the MAC Address of the designated bridge Designated Port ID The selected port s priority and interface Designated Cost The cost of the port participating in the STP topology Ports with a lower cost are less likely to be blocked if STP det
80. d while the port is a LAG member the configuration change is only effective after the port is removed from the LAG Figure 7 9 LAG Configuration Dell OpenManage Switch Administrator Support Help About Log Out PowerConnect 2816 10 5 225 74 LAG Configuration Home 5 A A System LAG Configuration E Switch Network Security E Ports Port Configuration Green Ethernet Configurati Storm Control Port Mirroring Load Balance flayer2 E Load Balance Layer2 E Spanning Tree W VLAN Link Aggregation Multicast Support Statistics RMON ane DE Quality of Service LAG Mode Static Description 0 64 Characters LAG Type eth1000M Admin Status Down Current LAG Status Down Operational Status Active Admin Auto Negotiation Disable Current Auto Negotiation Admin Speed foom gt 4 gt Current LAG Speed x The LAG Configuration page contains the following fields Load Balance Indicates the load balancing type enabled on the LAG The possible field values are Layer 2 Enables load balancing based on static and dynamic MAC addresses Layer 3 Enables load balancing based on source and destination IP addresses Layer 2 3 Enables load balancing based on static and dynamic MAC addresses and source and destination IP addresses LAG The LAG number LAG Mode Indicates that the LAG mode is static Dell PowerConnect 28xx Systems User Guide e Descri
81. de 13 Short Reach Reduction of power over Ethernet cables shorter than 40m IGMP Snooping Internet Group Membership Protocol IGMP Snooping examines IGMP frame contents when they are forwarded by the device from work stations to an upstream Multicast router From the frame the device identifies work stations configured for Multicast sessions and which Multicast routers are sending Multicast frames Port Mirroring The port mirroring mechanism monitors and mirrors network traffic by forwarding copies of incoming and outgoing packets from a monitored port to a monitoring port Users can specify which target port receives copies of all traffic passing through one or more source ports Storm Control Storm Control enables limiting the amount of Multicast Broadcast and Unknown Unicast frames accepted and forwarded by the switch When Layer 2 frames are forwarded Broadcast and Multicast frames are flooded to all ports on the relevant VLAN All nodes connected to these ports accept and attempt to process these frames thus placing load on both the network links and the host operating system Dynamic VLAN Assignment DVA Dynamic VLAN Assignment allows automatic assignment of users to VLANs during the RADIUS server authentication When a user is authenticated by the RADIUS server the user is automatically joined to the VLAN configured on the RADIUS server VLAN Supported Features VLAN Support VLANs are collections of switch
82. dress DSCP DiffServe Code Point DSCP DSCP provides a method of tagging IP packets with QoS priority information Domain A group of computers and devices on a network that are grouped with common rules and procedures Duplex Mode Permits simultaneous transmissions and reception of data There are two different types of duplex mode e Full Duplex Mode Permits synchronous communication Two parties can transmit information at the same time e Half Duplex Mode Permits asynchronous communication Only one party can transmit information at a time Dynamic VLAN Assignment DVA Allows automatic assignment of users to VLANs during the RADIUS server authentication When a user is authenticated by the RADIUS server the user is automatically joined to the VLAN configured on the RADIUS server E Egress Ports Ports from which network traffic is transmitted End System An end user device on a network Ethernet Ethernet is standardized as per IEEE 802 3 Ethernet is the most common implemented LAN standard Supports data transfer rates of Mpbs where 10 100 or 1000 Mbps is supported EWS Embedded Web Server Provides device management via a standard web browser Embedded Web Servers are used in addition to or in place of a CLI or NMS F FFT Fast Forward Table Provides information about forwarding routes If a packet arrives to a device with a known route the packet is forwarded via a route l
83. e Enter copy tftp tftp address file name boot to copy the boot image to the device The following is an example of the information that appears console copy tftp 176 215 31 3 332448 10018 rfb boot Erasing file done Copy 2739187 bytes copied in 00 01 13 hh mm ss 4 Enter the reload command The following message is displayed console reload This command will reset the whole system and disconnect your current session Do you want to continue y n n 5 Enter y The device reboots Dell PowerConnect 28xx Systems User Guide 53 Using Dell OpenManage Switch Administrator This section provides an introduction to the user interface Understanding the Interface The home page contains the following views e Tree View Located on the left side of the home page the tree view provides an expandable view of the features and their components e Device View Located on the right side of the home page the device view provides an information or table area and configuration instructions Figure 5 1 Switch Administrator Components Dell OpenManage Switch Administrator Support Help About Log Out PowerConnect 2816 10 5 225 74 System T Click on the Component item to view its details H Switch H Statistics RMON Component Quality of Sevice General 3 IP Addressing Diagnostics Management Security 1 SAME File Management DHCP Server Advanced Settings UE Table 5 1 lists
84. e CoS Global Parameters DSCP to Queue in the tree view Figure 9 6 DSCP to Queue _Dell OpenManage Switch Administrator e Help About Log Out PowerConnect 2816 10 5 225 74 DSCP to Queue Mapping Home 3 H System DSCP to Queue Mapping Switch Statistics RMON Ei Quality of Service aj S ey DSCP In Queue DSCP In Queue DSCP In Queue Interface Settings 0 4 5 21 2y 42 3Y Queue Settings 1 47 22 27 43 3 y CoS to Queue ore a 2 47 2 2 44 3 3 hi al 24 2 45 3 4 fi y 25 2 y 46 3 y 5 ha 26 2 7 47 37 6 fi 27 2 z 48 4 y 7 ly 28 2 49 4 y 8 17 2 27 50 47 9 nz 30 fz s E 10 iz 31 27 52 47 11 fi z 32 3 y 53 4 y 12 fi y 33 3 y 54 4 y al y ha 34 Bz 55 47 r DSCP In The values of the DSCP field within the incoming packet Queue The queue to which packets with the specific DSCP value is assigned The values are 14 where one is the lowest value and four is the highest Mapping a DSCP value and assigning priority queue 1 2 3 4 Open the DSCP to Queue page Select a value in the DSCP In column Define the Queue fields Click Apply Changes The DSCP is overwritten and the value is assigned to a forwarding queue Restoring default values Dell PowerConnect 28xx Systems User Guide 151 1 Open the DSCP to Queue page 2 Check the Restore Defaults checkbox 3 Click Apply Changes The default values are restored 152Dell PowerC
85. e TFTP server the ros file Enter copy tftp tftp address file name image to copy a new system image to the device When the new image is downloaded it is saved in the area allocated for the other copy of system image The following is an example of the information that appears console copy tftp 176 215 31 3 filel ros image Accessing file filel on 176 215 31 30 Loading filel from 176 215 31 3 Copy took 00 01 11 hh mm ss Exclamation symbols indicate that a copying process is in progress Each symbol corresponds to 512 bytes transferred successfully A period indicates that the copying process is timed out Many periods in a row indicate that the copying process failed 52 Dell PowerConnect 28xx Systems User Guide 4 Enterthe reload command The following message is displayed console reload This command will reset the whole system and disconnect your current session Do you want to continue y n n 5 Enter y The device reboots Boot Image Download Loading a new boot image from the TFTP server and programming it into the flash updates the boot image The boot image is loaded when the device is powered on A user has no control over the boot image copies To download a boot image through the TFTP server 1 Ensure that an IP address is configured on one of the device ports and pings can be sent to a TFTP server Ensure that the file to be downloaded is saved on the TF TP server the r b fil
86. e monitored and displayed to the system administrator Z NOTE If both RJ 45 and SFP ports are present the SFP port will be the active port whereas the RJ 45 port will be disabled and ignored The pin number allocation for the SFP ports is listed in the following table Table 2 8 SFP Pin Connections PinNo Use l Transmitter ground common with receiver ground 2 Transmitter fault 3 Transmitter disable laser output disabled on high or open 4 Module definition 2 data line for serial ID 5 Module definition 1 clock line for serial ID 6 Module definition 0 grounded within the module 7 Rate select no connection required 8 Loss of signal indication logic 0 indicates normal operation 9 Receiver ground common with transmitter ground 10 Receiver ground common with transmitter ground 11 Receiver ground common with transmitter ground 12 Receiver inverted data out AC coupled 13 Receiver non inverted data out AC coupled 14 Receiver ground common with transmitter ground Dell PowerConnect 28xx Systems User Guide 25 Table 2 8 SFP Pin Connections PinNo Use 15 Receiver power supply 16 Transmitter power supply 17 Transmitter ground common with receiver ground 18 Transmitter non inverted data in 19 Transmitter inverted data in 20 Transmitter ground common with receiver ground Power Connectors The PowerConnect 28xx is powered by using the AC internal power supply Internal
87. ected management station to the device Access Mode Defines the access rights of the community The possible field values are Read Only The management access is restricted to read only for all MIBs except the community table for which there is no access Read Write The management access is read write for all MIBs except the community table for which there is no access SNMP Admin The management access is read write for all MIBs including the community table Remove Removes a community when selected Defining a New Community 1 Open the SNMP Community page 2 Click Add The Add SNMP Community page opens Dell PowerConnect 28xx Systems User Guide 75 Figure 6 17 Add SNMP Community Add SNMPv1 2 SNMP Community o 2 ReadOnly y 3 Select one of the following SNMP Management Station Defines an SNMP community for a specific management station All Defines an SNMP community for all management stations 4 Define the remaining fields 5 Click Apply Changes The new community is saved and the device is updated Displaying all Communities 1 Open the SNMP Community page 2 Click Show All The Community Table opens Figure 6 18 Community Table Community Table Basic Table Deleting Communities 1 Open the Community Table page 2 Click Show All The Community Table opens 716 Dell PowerConnect 28xx Systems User Guide Select a community fro
88. ects loops Forward Transitions The number of times the port has changed from the Blocking state to the Forwarding state LAG The LAG to which the port is attached Enabling STP on a Port 1 2 3 4 Open the STP Port Settings page Select Enabled in the STP Port Status field Define the Fast Link Path Cost and the Priority fields Click Apply Changes STP is enabled on the port Modifying STP Port Properties 1 2 3 Open the STP Port Settings page Modify the Priority Fast Link Path Cost and the Fast Link fields Click Apply Changes The STP port parameters are modified and the device is updated Displaying the STP Port Table 1 2 Open the STP Port Settings page Click Show All The STP Port Table opens Dell PowerConnect 28xx Systems User Guide 119 Defining STP LAG Settings The STP LAG Settings page contains fields for assigning STP aggregating port parameters To open the STP LAG Settings page click Switch Spanning Tree LAG Settings in the tree view Figure 7 18 STP LAG Settings 120 Dell OpenManage Switch Administrator Support Help About Log Out PowerConnect 2816 10 5 225 74 STP LAG Settings S Home a System STP LAG Settings E Switch Network Security Bint Refresh Ports H Address Tables E Spanning Tree Smal Global Settings STP Port Settings MEE Select a LAS A pid Spanning Tree VLAN STP Enable y Link Aggregation E H Multicast Support
89. ed the automatic correction of errors in cable selection is possible making the distinction between a straight through cable and a crossover cable irrelevant The standard wiring for end stations is known as MDI Media Dependent Interface and the standard wiring for hubs and switches is known as MDIX Flow Control The device supports 802 3x Flow Control for ports configured with the Full Duplex mode By default this feature is enabled It can be enabled per port The flow control mechanism allows the receiving side to signal to the transmitting side that transmission must temporarily be halted to prevent buffer overflow Back Pressure The device supports back pressure for ports configured to half duplex mode By default this feature is disabled It can be enabled per port The back pressure mechanism prevents the transmitting side from transmitting additional traffic temporarily The receiving side may occupy a link so it becomes unavailable for additional traffic Dell PowerConnect 28xx Systems User Guide 37 38 Switching Port Default Settings The following table gives the port default settings Table 3 3 Port Default Settings Function Default Setting Port speed and mode 10 100 1000BaseT copper auto negotiation full duplex Port forwarding state Enabled Port tagging No tagging Flow Control On Back Pressure Off disabled on ingress MDIX not user configurable On relevant to coppers ports only Dell Po
90. embership Groups 1 2 3 4 Open the VLAN Membership page Select a VLAN in the Show VLAN field Select the Remove VLAN check box Click Apply Changes The selected VLAN is deleted and the device is updated VLAN Port Membership Table The VLAN Port Membership Table contains a Port Table for assigning ports to VLANs Ports are assigned VLAN membership by toggling through the Port Control settings Ports can have the following values Table 7 1 VLAN Port Membership Table Port Control Definition T The interface is a member of a VLAN All packets forwarded by the interface are tagged The packets contain VLAN information Dell PowerConnect 28xx Systems User Guide Table 7 1 VLAN Port Membership Table Port Control Definition U The interface is a VLAN member Packets forwarded by the interface are untagged F The interface is denied membership to a VLAN Blank The interface is not a VLAN member Packets associated with the interface are not forwarded The VLAN Port Membership Table displays the ports and the ports states as well as LAGs Ports which are LAG members are not displayed in the VLAN Port Membership Table Assigning Ports to a VLAN Group 1 2 3 4 Open the VLAN Membership page Click the VLAN ID or VLAN Name option button and select a VLAN from the drop down menu Select a port in the Port Membership Table and assign the port a value Click Apply Changes The port is as
91. ergy saving mode is on or off for the device ports Current Power Consumption The power currently consumed by all ports including both those with links up and links down Power Saving The percentage of power saved For example a Power Saving value of indicates that just of the power that would normally be used without Green Ethernet is currently being used The Green Ethernet Ports Table includes the following port energy saving information Port Indicates the port Energy Detect The status of the Energy Detect mode on the link Admin Whether the Energy Detect has been enabled for the port Dell PowerConnect 28xx Systems User Guide 107 Oper Whether Energy Detect is currently in force for the port Reason If Admin indicates that Energy Detect is enabled and Oper indicates it is not in force this column gives the reason Reasons may include that the Link Type is not supported or that the Port Link is up Short Reach The status of the Short Reach mode on the link Admin Whether the Short Reach has been enabled for the port Oper Whether Short Reach is currently in force for the port Reason If Admin indicates that Short Reach is enabled and Oper indicates it is not in force this column gives the reason Reasons may include that the Link Type is not supported that the Link Speed is not supported is fast Ethernet and therefore its cable length cannot be deter
92. es if a fault occurred during transmission e Loss of Signal Indicates if a signal loss occurred in the cable Data Ready The transceiver has achieved power up and data is ready Displaying Optical Transceiver Diagnostics Test Results Table 1 Open the Optical Transceiver Diagnostics page 2 Click Show All The test is run and the Virtual Cable Test Results Table opens Clicking Show All opens the Optical Transceiver Diagnostics Table The Optical Transceiver Diagnostics Table contains the following columns 66 Dell PowerConnect 28xx Systems User Guide Port The port to which the fiber cable is connected Temperature Internally measured transceiver temperature Voltage Internally measured supply voltage Current Measured TX bias current Output Power Measured TX output power in milliwatts Input Power Measured RX received power in milliwatts TX Transmitter Fault Transmitter fault Finisair transceivers do not support the transmitter fault diagnostic testing Fiber Optic analysis feature works only on SFPs that support the digital diagnostic standard SFF 4872 LOSLoss of Signal Loss of signal Data Ready The transceiver has archived power up and data is ready N A Not Available N S Not Supported W Warning E Error Dell PowerConnect 28xx Systems User Guide 67 Managing Device Security The Management Security page provides access to security pages
93. ess Type Displays the manner in which the IP address was assigned to the host Static allocation The network administrator maps the hardware address of a host to an IP address on the DHCP server Permanent allocation An IP address received through a standard request reply mechanism is owned by a client permanently Dynamic allocation A network device obtains a leased IP address for a specified period of time The IP address is revoked at the end of this period and the switch must request another IP address Dell PowerConnect 28xx Systems User Guide 91 Defining Advanced Settings The Advanced Settings page contains information for configuring general settings Use Advanced Settings to set miscellaneous global attributes for the device The changes to these attributes are applied only after the device is reset To open the Advanced Settings page click System gt Advanced Settings in the tree view Configuring General Device Parameters The General Settings page provides information for defining general device parameters To open the General Settings page click System gt Advanced Settings gt General in the tree view Figure 6 32 General Settings Dell OpenManage Switch Administrator Support Help About Log Out PowerConnect 2816 10 5 225 74 SNMP zj File Management General Settings E DHCP Server DHCP Server Properties Network Pool Excluded Addresses Static Hos
94. g if gt ip address 131 108 1 27 255 255 255 0 default gateway 131 108 1 1 Command ping Use the ping command to send ICMP echo request packets to another node on the network ping 1p address hostname size packet_size count packet_count timeout time_out Syntax Description ip address IP address to ping hostname Hostname to ping packet_size Number of bytes in a packet The default is 56 bytes The actual packet size will be eight bytes larger than the size specified because the switch adds header information packet_count Number of packets to send from to 65535 packets The default is 4 packets If 0 is entered it pings until stopped time_out Timeout in milliseconds to wait for each reply from 50 to 65535 milliseconds The default is 2000 milliseconds Parameters range hostname 158 characters Max label size 63 packet_size Pv4 56 1472 Dell PowerConnect 28xx Systems User Guide 163 164 e packet count 0 65535 e time out 50 65535 Command Mode EXEC Default value This command has no default setting Usage Guidelines Press Esc to stop pinging Following are sample results of the ping command Destination does not respond If the host does not respond a no answer from host appears in ten seconds Destination unreachable The gateway for this destination indicates that the destination is unreachable Network or host unreachable The switch found no
95. h from the RJ 45 to the SFP or vice versa without resetting the device If both RJ 45 and SFP ports are present the SFP port will be the active port whereas the RJ 45 port will be disabled On the top right side of the front panel is the Managed Mode LED which indicates the Ethernet switch operational status and the management mode The Fan LED indicates the device fan operations status and the Power LED on the front panel indicates whether the device is powered on or not A Mode push 20 Dell PowerConnect 28xx Systems User Guide button located on the right side on the front panel is used to transition between management modes and to reset the device For more information about management modes and transitioning between them see Management Modes on page 49 Fans are provided on the side panel The back panel contains an AC Power Supply Interface The following figure illustrates the back panel of the PowerConnect 2848 device Figure 2 8 PowerConnect 2848 Back Panel POWER 100 240VAC Console Port AC Power Supply Interface Physical Dimensions The PowerConnect 2808 switch has the following physical dimensions Height 43 2 mm 1 7008 in e Width 256 mm 10 079 in e Depth 161 7 mm 6 366 in The PowerConnect 2816 and PowerConnect 2824 switches have the following physical dimensions Height 43 2 mm 1 7008 in e Width 330 mm 12 992 in e Depth 230 50 mm 9 075 in The PowerCon
96. has two or more connections connected to a shared segment Disabled The port is not participating in the Spanning Tree the port s link is down e Mode Displays the STP mode by which STP is enabled on the device The possible field values are Classic STP Enables Classic STP on the device This is the default value Rapid STP Enables Rapid STP on the device Fast Link Operational Status Indicates if Fast Link is enabled or disabled for the port or LAG If Fast Link is enabled for a port the port is automatically placed in the forwarding state Enabling RSTP 1 Open the Rapid Spanning Tree RSTP page 2 Define the Point to Point Admin Point to Point Oper and the Activate Protocol Migration fields Dell PowerConnect 28xx Systems User Guide 123 124 3 Click Apply Changes Rapid STP is enabled and the device is updated Configuring VLANs VLANs are logical subgroups of a Local Area Network LAN created via software rather than defining a hardware solution VLANs combine user stations and network devices into a single domain regardless of the physical LAN segment to which they are attached VLANs allow network traffic to flow more efficiently within subgroups VLANs managed through software reduces the amount of time in which network changes are implemented VLANs have no minimum number of ports and can be created per device or any other logical connection combination as VLANs are software based an
97. he current session After the device is powered down or rebooted all commands stored in the Running Configuration file are lost During the startup process all commands in the Startup file are copied to the Running Configuration File and applied to the device During the session all new commands entered are added to the commands existing in the Running Configuration file Commands are not overwritten Image File System file images are saved in a Flash File called an image The device boots and runs from the image To open the File Management page click System File Management in the tree view Downloading Files The File Download From Server page contains fields for downloading system image and Configuration files from the TF TP server or HTTP client to the device To open the File Download From Server page click System gt File Management gt File Download in the tree view Dell PowerConnect 28xx Systems User Guide 79 Figure 6 21 File Download From Server Dell OpenManage Switch Administrator Support Help About Log Q PowerConnect 10 5 225 88 File Download from Server amp Home E gt System File Download from Server General IP Addressing Diagnostics Management Se SNMP S File Managemer Firmware Download 9 Download via TFTP al 2 File Downlo Configuration Download C Download via HTTP Cc File Upload Restore Defa DHCP Server oo Advanced Settin Firmware Download _
98. he range is 0 to 23 hours Minutes Specifies the number of minutes in the lease A days value and an hours value must be added before a minutes value can be added The range is 0 to 59 minutes Infinite Specifies that the duration of the lease is unlimited Used Pool s Addresses Specifies the number of the pool s addresses that are currently used Default Router Specifies the default router for the DHCP client Domain Name Server Specifies the DNS server available to the DHCP client Domain Name Specifies the domain name for a DHCP client The domain name may contain up to 32 characters NetBIOS WINS Server Specifies the NetBIOS WINS name server available to a DHCP client NetBIOS Node Type A parameter that informs the workstation how to resolve the NetBIOS name Valid node types are Broadcast IP broadcast messages are used to register and resolve NetBIOS names to IP addresses Peer to Peer Point to point communications with a NetBIOS name server are used to register and resolve computer names to IP addresses Mixed A combination mix of b node and p node communications is used to register and resolve NetBIOS names M node first uses b node then if necessary p node M node is typically not the best choice for larger networks because its preference for b node broadcasts increases network traffic Hybrid A hybrid combination of b node and p node is used When
99. he receiving side to signal to the sending side that transmission must be halted temporarily in order to prevent buffer overflows Flow control is enabled by default Virtual Cable Testing VCT VCT technology provides the mechanism to detect and report potential cabling issues such as cable opens and cable shorts on copper links Cable analysis is available on Copper Cables 10BASE I 100BASE T 1000BASE TI and is only done when the link is down When the system initiates a cable testing operation upon explicit user action the following parameters are detected e Cable Type and Status e Cable Length Fault Distance Dell PowerConnect 28xx Systems User Guide MAC Address Supported Features MAC Address Capacity Support The PowerConnect 2808 2816 2824 switches support a total of 8K MAC addresses and the PowerConnect 2848 supports a total of 16K MAC addresses Auto Learning MAC Addresses The switch enables MAC address auto learning from incoming packets The MAC addresses are stored in the Bridging Table Automatic Aging for MAC Addresses MAC addresses from which no traffic is received for a given period of time are aged out This prevents the Bridging Table from overflowing VLAN aware MAC based Switching in Managed and Secure Modes In Managed or Secure mode the switch system always performs VLAN aware bridging Classic bridging IEEE802 1D is not performed where frames are forwarded based only on their destinatio
100. hip page 2 In the LAG row the second row toggle the button to a specific number to aggregate to or remove the port from that LAG number 3 Click Apply Changes The port is added to the LAG and the device is updated Multicast Forwarding Support Multicast forwarding allows a single packet to be forwarded to multiple destinations L2 Multicast service is based on L2 switch receiving a single packet addressed to a specific Multicast address Multicast forwarding creates copies of the packet and transmits the packets to the relevant ports To open the Multicast Support page click Switch Multicast Support in the tree view 132 Dell PowerConnect 28xx Systems User Guide Defining Multicast Global Parameters Layer 2 switching forwards Multicast packets to all relevant VLAN ports by default treating the packet as a Multicast transmission While this is functional in the sense that all relevant ports nodes receive a copy of the frame it is potentially wasteful as ports nodes may receive irrelevant frames only needed by a subset of the ports of that VLAN Multicast forwarding filters enable forwarding of Layer 2 packets to port subsets defined in the Multicast filter database When IGMP snooping is enabled globally the switching ASIC is programmed to forward all IGMP packets to the CPU The CPU analyzes the incoming packets and determines which ports are to join which Multicast groups which ports have Multicast routers generating IGMP q
101. ication Table Select the Copy to check box to define the interfaces to which the Port based authentication parameters are copied 6 Click Apply Changes The parameters are copied to the selected port in the Port Based Authentication Table and the device is updated Dell PowerConnect 28xx Systems User Guide Configuring Advanced Port Based Authentication The Multiple Hosts page provides information for defining advanced port based authentication settings for specific ports To open the Multiple Hosts click Switch gt Network Security gt Multiple Hosts Figure 7 3 Multiple Hosts Dell OpenManage Switch Administrator Support DAL Help About Log Out _ PowerConnect 2816 10 5 225 74 Multiple Hosts amp Home 3 System Multiple Hosts B Switch E Network Security Port Based Authentic Multiple Hosts Authenticated Users Ports Address Tables Spanning Tree VLAN Port gl amp Link Aggregation Host Authentication Single ti Action on Single Host Violation Discard 7 fl istics Quality of Service Traps Disable z Trap Frequency 1 1000000 10 Sec Status Number of Violations 0 a zl e Port The port number for which Advanced Port Based Authentication is enabled e Host Authentication Defines the host authentication type The possible fields are Single Enables a single authorized host for single session access to the system Multiple Host Enables
102. ide Aggregating Ports Port Aggregation optimizes port usage by linking a group of ports together to form a single Link Aggregated Group LAG Port Aggregation multiplies the bandwidth between the devices increases port flexibility and provides link redundancy The device supports up to eight LAGs and each LAG can have up to eight members Each LAG is composed of ports of the same speed set to full duplex operations Ports in a LAG can be of different media types UT P Fiber or different fiber types provided they operate at the same speed The device provides LAG Load Balancing based on both source MAC addresses and destination MAC addresses Aggregated Links are treated by the system as a single logical port Specifically the Aggregated Link has similar port attributes to a non aggregated port including auto negotiation speed etc The following guidelines should be followed when adding ports to a LAG e There is no Layer 3 interface defined on the port The port does not belong to any VLAN The port does not belong to any other LAG e The port is not a mirrored port The port s 802 1p priority is equal to LAGs 802 1p priority e QoS Trust is not disabled on the port e GVRP is not enabled The device uses a hash function to determine which frames are carried on which aggregated link member The hash function statistically load balances the aggregated link members The device considers an Aggregated Link as a single logic
103. ined pool of IP addresses user defined from which it allocates IP addresses to DHCP clients The DHCP server can allocate IP addresses in three configuration modes Static allocation The network administrator maps the hardware address of a host to an IP address on the DHCP server Permanent allocation An IP address received through a standard request reply mechanism is owned by a client permanently unless changes in the network environment connections take place for any reason e Dynamic allocation A network device obtains a leased IP address for a specified period of time The IP address is revoked at the end of this period and the switch must request another IP address This section contains information for configuring a DHCP server on a DHCP server enabled switch To open the DHCP Server page click System gt DHCP Server in the tree view Configuring DHCP Properties The DHCP Server Properties page contains fields for enabling the DHCP server and configuring pinging capability The DHCP Server pings a pool address before assigning this address to a requesting client If the ping is unanswered the DHCP Server assumes with a high probability that the address is not in use and assigns the address to the requesting client To open the DHCP Server Properties page click System gt DHCP Server DHCP Server Properties in the tree view Dell PowerConnect 28xx Systems User Guide 83 84 Figure 6 24 DHCP Serve
104. ing Remote Monitoring RMON is an extension to the Simple Network Management Protocol SNMP which provides network traffic statistics RMON defines current and historical MAC layer statistics and control objects allowing real time information to be captured across the entire network The switches support one RMON group for Ethernet statistics The system provides a means to collect the statistics defined in RMON and to view the results using the Web management interface in the system Dell PowerConnect 28xx Systems User Guide Hardware Description Switch Port Configurations PowerConnect 28xx Front and Back Panel Port Description The Dell PowerConnect 28xx switches use 10 100 1000BASE T ports on the front panel for connecting to a network The Gigabit Ethernet ports can operate at 10 100 or 1000 Mbps These ports support auto negotiation duplex mode Half or Full duplex and flow control The combo 1000 Mbps optical ports can only operate at 1000 Mbps full duplex mode The following figures illustrate the front panels and back panels of the PowerConnect 28xx switches Figure 2 1 PowerConnect 2808 Front Panel Power LED 1 3 5 Y PowerConnect 1 it IA r 2008 cores TIT UN TAT sae Managed Mode LED 2 4 6 8 Managed Mode Button On the front panel there are eight ports which are numbered to 8 top down and left to right On each port there are LEDs Light Emitting Diode to indicate
105. ing ports that comprise a single broadcast domain Packets are classified as belonging to a VLAN based on either the VLAN tag or based on a combination of the ingress port and package contents Packets sharing common attributes can be grouped in the same VLAN Port Based Virtual LANs VLANs Port based VLANs classify incoming packets to VLANs based on their ingress port Link Aggregation The PowerConnect 28xx switches support up to eight aggregated links Each of the eight aggregated links may be defined with up to eight member ports to form a single Link Aggregated Group LAG The benefits of this facility are e Fault tolerance protection from physical link disruption 14 Dell PowerConnect 28xx Systems User Guide e Higher bandwidth connections Improved bandwidth granularity e High bandwidth server connectivity A LAG is composed of ports with the same speed set to full duplex operation DHCP Server Dynamic Host Configuration Protocol is a method of managing network parameter assignment from a single DHCP server The Dynamic Host Configuration Protocol DHCP automates the assignment of IP addresses subnet masks default gateway and other IP parameters BootP and DHCP Clients DHCP Dynamic Host Configuration Protocol enables additional setup parameters to be received from a network server upon system startup DHCP service is an on going process DHCP is an extension to BootP The BootP client is operational if there is a
106. is used to transition between management modes and to reset the device For more information about management modes and transitioning between them see Management Modes on page 49 Figure 2 4 PowerConnect 2816 Back Panel POWER p q J O O 100 240VAC O Console Port AC Power Supply Interface 18 Dell PowerConnect 28xx Systems User Guide Figure 2 5 PowerConnect 2824 Front Panel Power Managed Mode LED Combo Ports 1 3 5 7 9 11 13 15 17 19 21 23 3 5 7 y 3 5 7 19 a DLL F a a m m af aH a pr PowerConnect ll r fi ii im oi i a 2824 58 FAN POWER M W MT MN a man amm 2 E 7 PPT Py 2 4 6 8 10 12 14 16 18 20 221 24 23 24 SFP Ports PJs E aE Ve Es JA y gt J See i SZ s a a Managed Mode Button On the front panel there are 24 ports which are numbered to 24 top down and left to right On each port there are LEDs to indicate the port status There are two SFP Small Form Factor Plugable ports designated as ports 23 and 24 for fiber connection The two combo ports are logical
107. isted in the FFT If there is not a known route the CPU forwards the packet and updates the FFT 171 FIFO First In First Out A queuing process where the first packet in the queue is the first packet out of the packet Flapping Flapping occurs when an interfaces state is constantly changing For example an STP port constantly changes from listening to learning to forwarding This may cause traffic loss Flow Control Enables lower speed devices to communicate with higher speed devices that is that the higher speed device refrains from sending packets Fragment Ethernet packets smaller than 576 bits Frame Packets containing the header and trailer information required by the physical medium G GARP General Attributes Registration Protocol Registers client stations into a Multicast domain Gigabit Ethernet Gigabit Ethernet transmits at 1000 Mbps and is compatible with existing 10 100 Mbps Ethernet standards GVRP GARP VLAN Registration Protocol Registers client stations into a VLANs 172 H HOL Head of Line Packets are queued Packets at the head of the queue are forwarded before packets at the end of the line Host A computer that acts as a source of information or services to other computers HTTP HyperText Transport Protocol Transmits HTML documents between servers and clients on the internet IC Integrated Circuit Integrated Circuits are small electronic devices com
108. lection of copper fiber The short reach method is only for a link established at 1 Gigabyte and is not compatible with Fast Ethernet To open the Green Ethernet Configuration page click Switch Ports Green Ethernet Configuration in the tree view Dell PowerConnect 28xx Systems User Guide Figure 7 11 Green Ethernet Configuration Dell OpenManage Switch Administrator Support Help About Log Out PowerConnect 2824 10 5 225 74 Green Ethernet Configuration 3 Home y i System Green Ethernet Configuration E Switch Network Securit El Ports Port Configur LAG Configu i bee Green Ether OO Storm Contre A E poker Cumulative Energy Saved 0 W H Reset Address Tables Spanning Tree VLAN Link Aggregatior Multicast Suppo Link Down Energy Detect Mode Jor y E Statistics RMON ink Short Reach Energy Detect Mod for 7 A Quality of Service gt cal Current Power Consumption 1855 mW Power Saving l 0 Green Ethernet Ports Table Port Energy Detect Short Reach Cable Length Admin Reason Admin Reason al I vt MO Sal o of Cumulative Energy Saved The total amount of energy saved since the last reset This amount is equal to the saved power multiplied by the time period in hours Reset Click to set the Cumulative Power Saved counter back to 0 Indicates whether the Energy Detect saving mode is on or off for the device ports Link Short Reach Energy Mode Indicates whether the Short Reach en
109. level Global Configuration mode A password is not required The Global Configuration mode manages the device configuration on a global level The Interface Configuration mode configures the device at the physical interface level Interface commands which require subcommands have another level called the Subinterface Configuration mode A password is not required User EXEC Mode After logging into the device the EXEC command mode is enabled The user level prompt consists of the host name followed by the angle bracket gt For example console gt Z NOTE The default host name is console unless it has been modified during initial configuration The user EXEC commands permit connecting to remote devices changing terminal settings on a temporary basis performing basic tests and listing system information To list the user EXEC commands enter a question mark at the command prompt 154 Dell PowerConnect 28xx Systems User Guide Privileged EXEC Mode Privileged access can be protected to prevent unauthorized access and ensure operating parameters Passwords are displayed in the format on the screen and are case sensitive To access and list the Privileged EXEC Mode commands 1 At the prompt type enable and press lt Enter gt 2 When a password prompt displays enter the password and press lt Enter gt The Privileged EXEC mode prompt displays as the device host name followed by For example console To li
110. ling vents are not blocked Do not push foreign objects into the device as it may cause a fire or electric shock Use the device only with approved equipment Allow the device to cool before removing covers or touching internal equipment Ensure that the device does not overload the power circuits wiring and over current protection To determine the possibility of overloading the supply circuits add together the ampere ratings of all switches installed on the same circuit as the device Compare this total with the rating limit for the circuit Do not install the device in an environment where the operating ambient temperature might exceed 45 C 113 F Ensure that the airflow around the front sides and back of the device is not restricted Dell PowerConnect 28xx Systems User Guide 27 28 Site Requirements The PowerConnect 28xx can be mounted in a standard equipment rack placed on a tabletop or mounted on the wall Before installing the device verify that the site selected for the device meets the following site requirements Power The device is installed within 1 5 m 5 feet of a grounded easily accessible outlet 220 110 VAC 50 60 Hz If the device has two power supplies the site should have two power outlets with different power feeders General Ensure that the power supply is correctly installed Clearance There is adequate frontal clearance for operator access Allow clearance for cabling power c
111. ll RADIUS SNMP File Managemer 1922542543 7 DHCP Server IP Address 192 254 254 3 y Advanced Settin Priority 0 65535 fo Switch ee haz SCS Statistics RMON Authentication Port 0 65535 1812 Quality of Service Number of Retries 1 10 IV Use Default Timeout for Reply 1 30 Sec IV Use Default Dead Time 0 2000 J Min M Use Default Key String 0 128 Characters faa Alpha Numeric I Use Default Source IP Address X X X X M Use default Default Parameters Default Retries 1 10 E Default Timeout for Reply 1 30 E nm OE nai e i IP Address The list of Authentication Server IP addresses e Priority 0 65535 Specifies the server priority The possible values are 0 65535 where 0 is the highest value This is used to configure the order in which servers are queried 70 Dell PowerConnect 28xx Systems User Guide Authentication Port Identifies the authentication port The authentication port is used to verify the RADIUS server authentication Number of Retries 1 10 Specifies the number of transmitted requests sent to RADIUS server before a failure occurs The possible field values are 1 10 Three is the default value Timeout for Reply 1 30 Specifies the amount of the time in seconds the device waits for an answer from the RADIUS server before retrying the query or switching to the next server The possible field values are 1 30 The default is 3 Dead Time 0 2000 Specifies the am
112. logged on to the device The field format is Day Hour Minute Seconds for example 3 days 2 hours 4 minutes 39 seconds e Authentication Method The method by which the last session was authenticated The possible field values are Remote The user was authenticated from a remote server None The user was not authenticated e MAC Address The client supplicant MAC address Displaying the Authenticated Users Table 1 Open the Add User Name page 2 Click Show All The Authenticated Users Table opens Dell PowerConnect 28xx Systems User Guide 99 Figure 7 6 Authenticated Users Table Authenticated Users Table 100 Dell PowerConnect 28xx Systems User Guide Configuring Ports The Ports page contains links to port functionality pages including advanced features such as Green Ethernet Storm Control and Port Mirroring To open the Ports page click Switch gt Ports Defining Port Parameters The Port Configuration page contains fields for defining port parameters To open the Port Configuration page click Switch Ports Port Configuration in the tree view Figure 7 7 Port Configuration Dell OpenManage Switch Administrator Support Help About Log Out PowerConnect 2816 10 5 225 74 Port Configuration S Home E System Port Configuration E Switch Network Security Er Ports LAG Configuration Green Ethernet Configurati Storm Control Port Mirroring Address Tables Port
113. lowing modes Single Host Mode Enables only the authorized host for single session access to the port e Multiple Host Mode Enables multiple hosts to be attached to a single port for single session access Only one host must be authorized for all hosts to access the network If the host authentication fails or an EAPOL logoff message is received all attached clients are denied network access e Multiple Session Mode Enables only the authorized host for multiple session access to the port e Guest VLANs Provides limited network access to unauthorized ports If a port is denied network access via port based authorization but the Guest VLAN is enabled the port receives limited network access For example a network administrator can use Guest VLANs to deny network access via port based authentication but grant Internet access to unauthorized users To open the Network Security page select Switch gt Network Security Configuring Port Based Authentication The Port Based Authentication page contains fields for configuring port based authentication and for enabling Guest VLANs To open the Port Based Authentication page click Switch gt Network Security gt Port Based Authentication Figure 7 1 Port Based Authentication Port based Authentication Table Disable 4 halla la MK Disable Authorized Authorized paja 4 4 i epee ON 4 e Port Based Authentication State Permi
114. lue influences the LAG choice when a bridge has two looped ports The priority value is between 0 240 in increments of 16 Designated Bridge ID The bridge priority and the MAC Address of the designated bridge Designated Port ID The port priority and interface number of the designated port Designated Cost The cost of the designated bridge Forward Transitions The number of times the LAG State has changed from the Blocking state to a Forwarding state Dell PowerConnect 28xx Systems User Guide 121 Modifying the LAG STP Parameters 1 2 3 4 Open the STP LAG Settings page Select a LAG from the Select a LAG drop down menu Modify the fields as desired Click Apply Changes The STP LAG parameters are modified and the device is updated Configuring Rapid Spanning Tree While Classic Spanning Tree guarantees preventing L2 forwarding loops in a general network topology convergence can take up to 30 60 seconds The convergence time is considered too long for many applications When network topology allows faster convergence may be possible The Rapid Spanning Tree Protocol RSTP detects and uses of network topologies that provide faster convergence of the spanning tree without creating forwarding loops RSTP has the following port states Disabled Learning Discarding Forwarding Rapid Spanning Tree is enabled on the STP Global Settings page To open the Rapid Spanning Tree RSTP page click Switch Spanni
115. m from flash to RAM Startup Menu Special Functions i Standard Device Reboot Installation nitial Configuration IP Address Subnet mask i Users Basic Security Wizard Configuration 3 r Process Configuration Advanced Advanced Configuration IP i Device Address from DHCP i Installation Management Modes The device can be run in Managed or Unmanaged mode By default the device is in Unmanaged mode These modes are described below e Managed Mode In this mode Switch can be managed through the web interface Managed Mode LED is ON Device uses the saved running configuration if it exists or the default configuration 40 Dell PowerConnect 28xx Systems User Guide The current running configuration is automatically saved to local storage If the system is switched to unmanaged mode via the Managed Mode button the system does not load the saved configuration but it is still maintained in the device s local storage From Managed mode you can move to Unmanaged mode by pressing the Mode button on the device or you can move to Secure mode using the web interface see Entering Secure Mode on page 62 The factory default values used when the device is in Managed mode include IP Address 192 168 2 1 Netmask 255 255 255 0 Username admin Permission R W privilege DHCP Client Off Flow Control On STP Off Unmanaged Mode In this mode The devi
116. m functioning as the root port for the switch Dell PowerConnect 28xx Systems User Guide 15 16 Class of Service CoS Features The PowerConnect 28xx system enables users to define various services for traffic classes of service The underlying mechanism for supporting bandwidth management and control is based on the use of multiple priority queues for classifying traffic The switches support four queues per port A CoS is defined by the user whereby packets are related to the same Class of Service After a packet has been classified it is assigned to one of the queues The PowerConnect 28xx system can classify according to IPv4 information DSCP Class of Service 802 1p Support The IEEE 802 1p signaling technique is an OSI Layer 2 standard for marking and prioritizing network traffic at the data link MAC sub layer 802 1p traffic is classified and sent to the destination No bandwidth reservations or limits are established or enforced 802 1p is a spin off of the 802 10 VLANs standard Ethernet Switch Management Features Web Based Management With a Web based management interface the Ethernet Switches system can be managed from any Web browser The system contains an Embedded Web Server EWS which serves HTML pages through which the system can be monitored and configured TFTP Trivial File Transfer Protocol The PowerConnect 28xx switches support software boot image and software download through TFTP Remote Monitor
117. m the Community Table Select the Remove check box 5 Click Apply Changes The selected community entry is deleted and the device is updated Defining SNMP Notification Recipients The Notification Recipients page contains information for defining filters that determine whether traps are sent to specific users and the trap type sent SNMP notification filters provide the following services e Identifying Management Trap Targets e Trap Filtering e Selecting Trap Generation Parameters e Providing Access Control Checks To open the Notification Recipients page click System gt SNMP gt Notification Recipient in the tree view Figure 6 19 Notification Recipients Dell OpenManage Switch Administrator Support Help About Log Out PowerConnect 2816 A E Home Eh System Notification Recipients General IP Addressing Diagnostics Management Se SNMP Global Paran 0 00 Community File Managemer ABERG DHCP Server Community String El fevers Settin Notification Version SNMPvi wite Statistics RMON Quality of Service BH A A A Remove Notification Recipient m JK a mi e Recipient IP Indicates the IP address to whom the traps are sent e Notification Version Determines the trap type The possible field values are SNMPv1 SNMP Version 1 traps are sent SNMPv2 SNMP Version 2 traps are sent Remove Notification Recipient When checked removes selected notification recipie
118. mined by VCT cable length can be determined on Giga ports only or that the Port Link is down e Cable Length The automatically detected length of the cable Enabling Green Ethernet on the Device 1 Open the Green Ethernet Configuration page 2 Enable the desired energy saving methods 3 Click Apply Changes Green Ethernet is enabled on the device Enabling Storm Control A Broadcast Storm is a result of an excessive amount of broadcast messages simultaneously transmitted across a network by a single port Forwarded message responses are heaped onto the network straining network resources or causing the network to time out The system measures the incoming Unicast Broadcast and Multicast frame rate separately on each port and discard frames when the rate exceeds a user defined rate The Storm Control page provides fields for enabling and configuring Storm Control To open the Storm Control page click Switch Ports Storm Control in the tree view 108 Dell PowerConnect 28xx Systems User Guide Figure 7 12 Storm Control Dell OpenManage Switch Administrator Support Help About Log Out PowerConnect 2816 10 5 225 74 Stom comot O Home System Storm Control E Switch Network Security B Ports Port Configuration LAG Configuration i Green Ethernet Configurati Storm Control Port Mirroring Address Tables Port gl E Spanning Tree Broadcast Control E VLAN Broadcastony x Link Aggregation Mode Broadcast O
119. mode optimizes the time it takes for the STP protocol to converge STP convergence can take 30 60 seconds in large networks Root Guard When checked prevents devices outside the network core from being assigned the spanning tree root Dell PowerConnect 28xx Systems User Guide 117 118 Port State The current port STP state If enabled the port state determines what forwarding action is taken on traffic Possible port states are Disabled The port link is currently down Blocking The port is currently blocked and cannot be used to forward traffic or learn MAC addresses Blocking is displayed when Classic STP is enabled Listening The port is currently in the listening mode The port cannot forward traffic nor can it learn MAC addresses Learning The port is currently in the learning mode The port cannot forward traffic however it can learn new MAC addresses Forwarding The port is currently in the forwarding mode The port can forward traffic and learn new MAC addresses Role Displays the port role assigned by the STP algorithm to provide to STP paths The possible field values are Root Provides the lowest cost path to forward packets to the root switch Designated Indicates the port or LAG through which the designated switch is attached to the LAN Alternate Provides an alternate path to the root switch from the root interface Backup Provides a backup path to the designate
120. n o 153 Telnet Connection 0 0 0 00 000000000004 153 Using the CL cw cake ek ada Re der BA Ae a Command Mode Overview 2 0 User EXEC Mode s 2 2 o o e ee Privileged EXEC Mode 02000 Global Configuration Mode Interface Configuration Mode 0 CLI Comas Command Copy 2 0 0 e Command debug mode 0 4 Command do s 24222848844 Ahh REE AEH DER eS Command end ec ece c ea Bae ERS Ew Be ee e Command exit configuration oo e Command exit EXEC o e Command help oaa 000 0 000000 Command interface ethernet o o o a Command interface port channel a e Command interface vlan ooa a Command ip address o e Command POB Command show tech support command Command snmp seryer coMMUNItY o e Command username o oo a a a Introduction This User s Guide contains the information needed for installing configuring and maintaining the PowerConnect 2808 PowerConnect 2816 PowerConnect 2824 and PowerConnect 2848 Web managed Gigabit Ethernet switches The PowerConnect 28xx switches can be used to connect workstations and other network devices such as e Servers Hubs e Routers The PowerConnect devices are primarily designated for the Small Office Home Office SOHO that require high performance edge connectivity
121. n Example In the following example for VLAN 1 the address is 131 108 1 27 and the subnet mask is 255 255 255 0 Console config interface vlan 1 Console config if ip address 131 108 1 27 255 255 255 0 Command ip address Use the ip address Interface Configuration mode command to define an IP address for an interface Use the no form of this command to remove an IP address definition ip address ip address mask prefix length default gateway 1p address no ip address Syntax Description e p address Specifies the IP address mask Specifies the network mask of the IP address e prefix length Specifies the number of bits that comprise the IP address prefix The prefix length must be preceded by a forward slash e default gateway 1p address Specifies the default gateway IP address Parameters range e 1ip address Valid IP address mask Valid mask 162 Dell PowerConnect 28xx Systems User Guide pretix length Range 8 30 default gateway 1p address Valid IP address Defaults No IP address is defined for interfaces Command Modes Interface Configuration VLAN mode User Guidelines Assigning an IP address to an interface does not disable L2 protocols such as STP Defining a static IP address on an interface implicitly removes the DHCP client configuration on the interface Interface context may be VLAN 1 only Examples switch config gt interface vlan 1 switch confi
122. n MAC address However a similar functionality may be configured for untagged frames Addresses are associated with ports by learning them from the incoming frames source address 802 1D Bridging in Unmanaged Mode In Unmanaged Mode the switch performs classic bridging Frames are forwarded based on their destination MAC address only regardless of the VLAN tag MAC Multicast Support Multicast service is a limited broadcast service which allows one to many and many to many connections for information distribution Layer 2 Multicast service is where a single frame is addressed to a specific Multicast address from where copies of the frame are transmitted to the relevant ports IGMP Snooping is supported including IGMP Querier which simulates the behavior of a multicast router allowing snooping of the layer 2 multicast domain even though there is no multicast router When Multicast groups are statically enabled you can set the destination port of registered groups as well as define the behavior of unregistered multicast frames Layer 2 Features Green Ethernet Green Ethernet also known as Energy Efficient Ethernet is an effort to make networking equipment environmentally friendly specifically by reducing power usage of Ethernet connections The following methods are supported by the device Energy Detect Auto detection of inactivity on a port and subsequent reducing of transmit power Dell PowerConnect 28xx Systems User Gui
123. n into account if no selection is made within 35 seconds default the device times out This default value can be changed through CLI Software Download The software download procedure is performed when a new version must be downloaded to replace the corrupted files update or upgrade the system software To download software from the Startup menu 1 From the Startup menu press 1 The following prompt appears Downloading code using XMODEM 2 When using the HyperTerminal click Transfer on the HyperTerminal Menu Bar 3 In the Filename field enter the file path for the file to be downloaded 4 Ensure that the Xmodem protocol is selected in the Protocol field 5 Press Send The software is downloaded Z NOTE After software download the device reboots automatically Z NOTE The length of time taken by the download varies according to the tool used Erase FLASH File In some cases the device configuration must be erased If the configuration is erased all parameters configured via CLI EWS or SNMP must be reconfigured Erasing the Device Configuration 1 From the Startup menu press 2 within two seconds to erase flash file The following message is displayed Warning About to erase a Flash file Are you sure Y N y 2 Press Y The following message is displayed Write Flash file name Up to 8 characters Enter for none config File config if present will b rased after system initialization Pres
124. n the QoS Queue Settings page click Quality of Service CoS Global Parameters Queue Settings in the tree view Figure 9 4 QoS Queue Settings 148Dell PowerConnect 28xx Systems User Guide Dell OpenManage Switch Administrator Help About Log Out PowerConnect 2816 10 5 225 74 QoS Queue Settings H System QoS Queue Settings Switch Statistics RMON Print Bosh Quality of Service B CoS Global Parameters pects S an E WRR Interface Settings Priority aes Queue Settings 1 C e 1 33 33 CoS to Queue c e e j DSCP to Queue 2 2 66 67 3 o Ki p 4 fal C i Y B e Queues The Queue number Strict Priority Specifies if traffic scheduling is based strictly on the queue priority WRR Specifies if traffic scheduling is based on the Weighted Round Robin WRR weights to egress queues The default values are for Queue 2 for Queue 2 8 for Queue 3 16 for Queue 4 WRR Weights The WRR weight assigned to each queue WRR Percentage The WRR percentage of each queue Defining the Queue Settings 1 Open the QoS Queue Settings page 2 Define the fields 3 Click Apply Changes The queue settings are defined and the device is updated Dell PowerConnect 28xx Systems User Guide 149 Mapping CoS Values to Queues The CoS to Queue Mapping Table page contains fields for classifying CoS settings to traffic queues To open the CoS to Queue Mapping Table page click Quality of Servi
125. n the interface in single host mode from a host whose MAC address is not the client supplicant MAC address Displaying the Multiple Hosts Table 1 2 Open the Multiple Hosts page Click Show All The Multiple Hosts Table opens Figure 7 4 Multiple Hosts Table 98 Multiple Hosts Table Refresh Action on Enable Trap Number of A Violation Traps Frequency Sata Violations gt Single Discard y L 10 Not in auto mode 0 2 g2 Single Discard y E 10 Unauthorized 0 3 yg Single Discard y a 10 Unauthorized 0 4 nd Sinale l Nierard l E in Hnautharized n Dell PowerConnect 28xx Systems User Guide Authenticating Users The Authenticated Users page displays user port access lists To open the Authenticated Users page click Switch gt Network Security gt Authenticated Users Figure 7 5 Authenticated Users Dell OpenManage Switch Administrator Support Help About Log Out PowerConnect 2816 10 5 225 74 Authenticated Users S Home f E System Authenticated Users E Switch E Network Security Port Based Authentic Multiple Hosts Ports Address Tables pra User Name s H Link Aggregation Multicast Support Statistics RMON Port Session Time Authentication Method MAC Address Quality of Service A El User Name List of users authorized via the RADIUS Server e Port The port number s used for authentication per user name Session Time The amount of time the user was
126. nage Switch Administrator nManage Switch Administrator Sport Help About Log Out DLL PowerConnect 2816 10 5 225 74 Interface Settings S Home y B System Interface Settings Switch Statistics RMON Quality of Service El CoS Global Parameters E CoS Settings Queue Settings CoS to Queue DSCP to Queue Interface e Pot g1 ach Disable Trust Mode on Interface B Set Default CoS For Incoming Traffic To fo E Interface The specific port or LAG to configure Disable Trust Mode on Interface Disables the Trust mode on the specified interface This setting overrides the Trust mode configured on the device globally Set Default CoS For Incoming Traffic To Sets the default CoS value The CoS tag values are 0 7 The default value is 0 Dell PowerConnect 28xx Systems User Guide 147 Assigning 00S CoS settings for an interface 1 2 3 4 Open the Interface Settings page Select an interface in the Interface field Detine the fields Click Apply Changes The CoS settings are assigned to the interface Displaying the QoS Interface Settings Table 1 Open the Interface Settings page 2 Click Show All The QoS Interface Settings Table page opens Figure 9 3 QoS Interface Settings Table Interface Table Defining Queue Settings The QoS Queue Settings page contains fields for configuring the scheduling method by which the queues are maintained To ope
127. name server are used to register and resolve computer names to IP addresses Mixed A combination mix of b node and p node communications is used to register and resolve NetBIOS names M node first uses b node then if necessary p node M node is typically not the best choice for larger networks because its preference for b node broadcasts increases network traffic Hybrid A hybrid combination of b node and p node is used When configured to use h node a computer always tries p node first and uses b node only if p node fails This is the default SNTP Server Specifies the time server for the DHCP static host Next Server Specifies the IP address of the next server in the boot process of a DHCP client Next Server Name Specifies the name of the next server in the boot process The server name may contain up to 64 characters e File Name Specifies the name of the file that is used as a boot image The file name may contain up to 128 characters Adding a new Static Host 1 Open the Static Hosts page 2 Click Add The Add Static Host page opens Dell PowerConnect 28xx Systems User Guide 89 Figure 6 29 Add Static Host Add Static Host amo UN 3 Define the relevant fields 4 Click Apply Changes The static host is added and the device is updated Displaying Static Hosts Tables 1 Open the Static Hosts page 2 Click Show All The Static Hosts Table page opens Figure 6
128. nect 2848 switch has the following physical dimensions Height 43 2 mm 1 70 in e Width 440 mm 17 32 in e Depth 255 mm 10 04 in LED Definitions The front panel contains LEDs that indicate the status of links power supply fan status and Managed Mode status Dell PowerConnect 28xx Systems User Guide 21 22 Power LED On the PowerConnect 28xx front panel there is a Power LED The following table describes the Power Supply status LED indications Table 2 1 Power LED Indications LED Color Description Green Solid The switch is turned on Off The switch is not turned on Managed Mode LED On the PowerConnect 28xx front panel there is a Managed Mode LED monitoring the switch node as well as indicating diagnostic test results The following table describes the Managed Mode LED indications For more information about management modes and transitioning between them see Management Modes on page 49 Table 2 2 Managed Mode LED Indications LED Color Description Green Flashing Indicates diagnostics in progress firmware loading or Management Mode transition Green Solid Indicates the switch is in Managed Mode Amber Solid Diagnostics has failed Amber Flashing No valid image Off Indicates Unmanaged mode or Secure mode Fan LED 2824 2848 only On the PowerConnect 2824 and PowerConnect 2848 front panel there is a fan LED The following table describes the fan status LED indications
129. ng Tree Rapid Spanning Tree in the tree view 122 Dell PowerConnect 28xx Systems User Guide Figure 7 19 Rapid Spanning Tree RSTP Dell OpenManage Switch Administrator Support Help About Log Out PowerConnect 2816 10 5 225 74 Rapid Spanning Tree RSTP S Home y System Rapid Spanning Tree RSTP B Switch Print Refresh Network Security Ports Address Tables Spanning Tree Show Al Global Settings STP Port Settings STP LAG Setting imefce A CC U U U U C lt C i C i ce 1 er y Rapid Spanning Merface Port 9 LAG VLAN Role Disable Link Aggregation Multicast Support pcia BSE Statistics RMON Fast Link Operational Status Disable Be OIE NCIS Se Point to Point Admin Status Auto y Point to Point Operational Status Enable Activate Protocol Migration Test B E E e Interface Port or LAG on which Rapid STP is enabled e Role The port role assigned by the STP algorithm in order to provide to STP paths The possible field values are Root Provides the lowest cost path to forward packets to root device Designated The port or LAG via which the designated device is attached to the LAN Alternate Provides an alternate path to the root device from the root interface Backup Provides a backup path to the designated port path toward the Spanning Tree leaves Backup ports occur only when two ports are connected in a loop Backup ports also occur when a LAN
130. ng field 3 Click Apply Changes Bridge Multicast is enabled on the device Dell PowerConnect 28xx Systems User Guide 133 134 Enabling IGMP Snooping on the Device 1 2 3 Open the Multicast Global Parameters page Select Enable in the IGMP Snooping Status field Click Apply Changes IGMP Snooping is enabled on the device Adding Bridge Multicast Address Members The Bridge Multicast Group page displays the ports and LAGs attached to the Multicast service group in the Ports and LAGs tables The Port and LAG tables also reflect the manner in which the port or LAGs joined the Multicast group Ports can be added either to existing groups or to new Multicast service groups The Bridge Multicast Group page permits new Multicast service groups to be created The Bridge Multicast Group page also assigns ports to a specific Multicast service address group To open the Bridge Multicast Group page click Switch gt Multicast Support gt Bridge Multicast Group in the tree view Figure 7 27 Bridge Multicast Group Dell OpenManage Switch Administrator Support Help About Log Out PowerConnect 2816 10 5 225 74 Bridge Multicast Group S Home 4 k System Bridge Multicast Group S Switch Print Refresh E Network Security El Ports n W Address Tables Add a El Spanning Tree El VLAN El Link Aggregation B Multicast Support M a Global Parame wee 1 Bridge Multi Bridge Multicast Address ja
131. ning Communities o 0 0 0 0 00 00 0004 75 Defining SNMP Notification Recipients 77 Managing Files 2 ee 79 Downloading Files 2 20 00 0000 00000000004 79 Uploading Files 2 en 81 Restoring Default Settings 2 2 en 82 Defining DHCP Server Settings 0 e o 83 Configuring DHCP Properties o 83 Defining Network Pool 0 0 0 o 85 Excluding Addresses 2 e 86 Manually Allocating IP Addresses Static Hosts 88 Address Bindid8 ee 91 Defining Advanced Settings ooa a 92 Configuring General Device Parameters 92 Configuring Device Switching 93 Configuring Network Security ooa e 93 Configuring Port Based Authentication 94 Configuring Advanced Port Based Authentication 97 Authenticating Users 2 0 o e 99 Configuring Ports 2 101 Defining Port Parameters 2 2 101 Aggregating Ports 2 ee 103 Configuring Green Ethernet 2 2 ee 106 Enabling Storm Control 2 ee 108 Defining Port Mirroring Sessions 110 Configuring Address Tables 2 ee 112 Viewing Dynamic Addresses 2 0 0 112 Configuring the Spanning Tree Protocol 114 Defining STP Global Settings 114 Defining STP Port Settings
132. nism used with Half Duplex mode that enables a port not to receive a message Backplane The main BUS that carries information in the device Bandwidth Bandwidth specifies the amount of data that can be transmitted in a fixed amount of time For digital devices bandwidth is defined in Bits per Second bps or Bytes per Second Bandwidth Assignments The amount of bandwidth assigned to a specific application user and or interface 169 Baud The number of signaling elements transmitted each second Best Effort Traffic is assigned to the lowest priority queue and packet delivery is not guaranteed Boot Version The boot version BootP Bootstrap Protocol Enables a workstation to discover its IP address an IP address of a BootP server on a network or a configuration file loaded into the boot of a device BPDU Bridge Protocol Data Unit Provide bridging information in a message format BPDUs are sent across device information with in Spanning Tree configuration BPDU packets contain information on ports addresses priorities and forwarding costs Bridge A device that connect two networks Bridges are hardware specific however they are protocol independent Bridges operate at Layer 1 and Layer 2 levels Broadcast Domain Devices sets that receive broadcast frames originating from any device within a designated set Routers bind Broadcast domains because routers do not forward broadcast frame
133. nly M Multicast Support Rate Threshold 3 5 1000M a5 Kbits Sec H Statistics RMON Quality of Service i a z Port The port from which storm control is enabled Broadcast Control Enables or disables forwarding broadcast packet types on the device Mode Specifies the Broadcast mode currently enabled on the device The possible field value are Unknown Unicast Multicast amp Broadcast Counts unknown Unicast Multicast and Broadcast traffic Multicast amp Broadcast Counts Broadcast and Multicast traffic together Broadcast Only Counts only Broadcast traffic Rate Threshold 3 5 1000M The maximum rate Sec at which packets are forwarded The range is 3 5 1000M Enabling Storm Control on the Device 1 2 3 4 Open the Storm Control page Select an interface on which to implement storm control Define the fields Click Apply Changes The Storm Control is enabled on the device Displaying the Storm Control Table 1 2 Open the Storm Control page Click Show All The Storm Control Table opens Dell PowerConnect 28xx Systems User Guide 109 Figure 7 13 Storm Control Table Storm Control Table Defining Port Mirroring Sessions Port mirroring monitors and mirrors network traffic by forwarding copies of incoming and outgoing packets from one port to a monitoring port Port mirroring is configured by selecting a specific port to copy all packets and different po
134. nts Dell PowerConnect 28xx Systems User Guide 77 Adding a new Trap Recipients 1 Open Notification Recipients page 2 Click Add The Add Notification Recipients page opens Add Notification Recipient 3 Define the relevant fields 4 Click Apply Changes The notification recipient is added and the device is updated Displaying Notification Recipients Tables 1 Open Notification Recipients page 2 Click Show All The Notification Recipients Tables page opens Figure 6 20 Notification Recipients Tables Notification Recipients Table SNMPv1 2 Notification Recipient Deleting Notification Recipients 1 Open Notification Recipients page 2 Click Show All The Notification Recipients Tables page opens 3 Select a notification recipient 78 Dell PowerConnect 28xx Systems User Guide 4 Check the Remove checkbox 5 Click Apply Changes The recipient is deleted and the device is updated Managing Files The File Management section contains fields for managing device software the Image Files and the Configuration Files Files can be downloaded from a TF TP server The configuration file structure consists of the following configuration files Startup Configuration File Contains the commands required to reconfigure the device to the same settings as when the device is powered down or rebooted Running Configuration File Contains all Startup file commands as well as all commands entered during t
135. o image boot and null only e tftp can t be source and destination on the same copy e pry files can t be copied Copy to or from the slave units is for image and boot files only copy Character Descriptions Table A 2 Source and Destination Keywords Character Description For network transfers an exclamation point indicates that the copy process is taking place Each exclamation point indicates the successful transfer of ten packets 512 bytes each For network transfers a period indicates that the copy process timed out Many periods in a row typically mean that the copy process may fail Command debug mode To switch to debug mode use the debug mode command in Privileged EXEC mode debug mode Syntax Description This command has no arguments or keywords Command Mode Privileged EXEC Command do To execute an EXEC level command from global configuration mode or any configuration submode use the do command in any configuration mode do command Syntax Description command The EXEC command to be executed 158 Dell PowerConnect 28xx Systems User Guide Command modes All configuration modes Command end To end the current configuration session and return to privileged EXEC mode use the end global configuration command end Syntax Description This command has no arguments or key words Command Mode All configuration modes Default value This command has no
136. ode LED is OFF Device reboots in Secure mode with the current configuration but User presses no IP address Managed Mode bora button Device reboots in Managed mode Note See details User presses Managed Mode button for less below regarding restore default aera aT eae Device rebosa Managed mode on PC2808 Note See details below regarding restore default configuration page on PC2808 Note the following points The Managed Mode LED designates whether the management interface is active on the switch The LED is ON only in the Managed mode and OFF in Secure and Unmanaged modes 42 Dell PowerConnect 28xx Systems User Guide e Power cycle returns the switch to the same state that existed prior to the power cycle and configuration is preserved The user can only save or restore configurations while in Managed mode There is no management interface available in Secure or Unmanaged mode to enable the user to modify save or restore configurations e Since the device can only enter Secure mode via an option from the web interface it can only transition into Secure mode from Managed mode After the system is in Secure mode it retains its last running configuration but does not have a management IP address cannot be managed from the web interface Transition to managed mode on PC2816 24 48 devices e A transition from Unmanaged or Secure mode to Manage
137. og Out PowerConnect 2816 10 5 225 74 Dynamic Address Table E OOOO Home l System Dynamic Address Table E Switch ae ae Pit Retesh Ports Address Tables Spanning Tree Address Aging 10 630 300 Sec E VLAN Clear Table a Link Aggregation Multicast Support Statistics RMON Apply Changes H Quality of Service Que E T Interface e Porfoi achig I MAC Address J OXXX XX XX XX XX T VLAN ID Address Table Sort Key VLAN v Current Address Table eater O T 1 MN VLAN 1 000cHac7118 g2 El Address Aging 10 630 Specifies the amount of time the MAC Address remains in the Dynamic Address Table before it is timed out if no traffic from the source is detected The default value is 300 seconds e Interface Specifies the interface for which the table is queried There are two interface types from which to select Port Specifies the port numbers for which the table is queried LAG Specifies the LAG for which the table is queried e MAC Address Specifies the MAC address for which the table is queried e VLAN ID Specifies the VLAN ID for which the table is queried Address Table Sort Key Specifies the means by which the Dynamic Address Table is sorted Redefining the Aging Time 1 Open the Dynamic Address Table 2 Define the Aging Time field 3 Click Apply Changes The aging time is modified and the device is updated Dell PowerConnect 28xx Systems User Guide 113
138. on the device This is the default value Rapid STP Enables Rapid STP on the device BPDU Handling Determines how BPDU packets are managed when STP is disabled on the port device BPDUs are used to transmit spanning tree information The possible field values are Filtering Filters BPDU packets when spanning tree is disabled on an interface Flooding Floods BPDU packets when spanning tree is disabled on an interface This is the default value Port Cost Default Values Determines the Spanning Tree default path cost method The possible field values are Short Specifies 1 through 65535 range for port path costs This is the default value Long Specifies 1 through 200000000 range for port path costs Dell PowerConnect 28xx Systems User Guide 115 116 Priority 0 61440 in steps of 4096 Specifies the bridge priority value When switches or bridges are running STP each is assigned a priority After exchanging BPDUs the switch with the lowest priority value becomes the Root Bridge The default value is 32768 The bridge priority value is provided in increments of 4096 4K increments For example 0 4096 8192 etc Hello Time 1 10 Specifies the device Hello Time The Hello Time indicates the amount of time in seconds a root bridge waits between configuration messages The default is 2 seconds Max Age 6 40 Specifies the device Maximum Age Time The Maximum Age Time indica
139. on the interface e Periodic Reauthentication Reauthenticates the selected port periodically when enabled The reauthentication period is defined in the Reauthentication Period 300 4294967295 field e Reauthentication Period 300 4294967295 Indicate the time span in which the selected port is reauthenticated The field value is in seconds The field default is 3600 seconds Reauthenticate Now Permits immediate port reauthentication when selected e Authentication Server Timeout 1 65535 Defines the amount of time that lapses before the device resends a request to the authentication server The field value is in seconds The field default is 30 seconds Resending EAP Identity Request 30 65535 Defines the amount of time that lapses before EAP request are resent The field default is 30 seconds e Quiet Period 0 65535 The number of seconds that the device remains in the quiet state following a failed authentication exchange The possible field range is 0 65535 The field default is 60 seconds Supplicant Timeout 1 65535 The amount of time that lapses before EAP requests are resent to the user The field value is in seconds The field default is 30 seconds e Max EAP Requests 1 10 The total amount of EAP requests sent If a response is not received after the defined period the authentication process is restarted The field default is 2 retries Displaying the Port Based Authentication Table 1
140. onnect 28xx Systems User Guide Managing the Device Using the CLI A limited number of CLI commands are available for managing the device These commands are a subset of the options available via the web interface Accessing the Device Through the CLI The device can be managed over a direct connection to the console port or via a Telnet connection Using the CLI is similar to entering commands on a Linux system If access is via a Telnet connection ensure the device has an IP address defined and that the workstation used to access the device is connected to the device prior to beginning using CLI commands For information about configuring an initial IP Address see Static IP Address and Subnet Mask K NOTE Ensure the client is loaded before using the CLI K NOTE CLI can be used to manage the device only when the device is in Managed mode For more information about management modes see Management Modes on page 50 Console Connection 1 Power on the device and wait until the startup is complete 2 When the Console gt prompt displays type enable and press lt Enter gt 3 Configure the device and enter the necessary commands to complete the required tasks 4 When finished exit the session with the quit or exit command K NOTE If a different user logs into the system in the Privilege EXEC command mode the current user is logged off and the new user is logged in Telnet Connection Telnet is a terminal emulation TCP
141. onnections and ventilation Cabling Cabling is routed to avoid sources of electrical noise such as radio transmitters broadcast amplifiers power lines and fluorescent lighting fixtures Ambient Requirements The ambient device operating temperature range is 0 to 45 C 32 to 113 F at a relative humidity of up to 95 non condensing Verify that water or moisture cannot enter the device case Unpacking Package Contents While unpacking the device ensure that the following items are included The device AC power cable Self adhesive rubber pads for on shelf installation Rack mount kit for installation Documentation CD Product Information Guide Unpacking the Device To unpack the PowerConnect device NOTE Before unpacking the device inspect the packaging and report any evidence of damage 1 2 3 4 Place the box on a clean flat surface Open the box or remove the box top Carefully remove the device from the package and place it on a secure stable and clean surface Remove all packing material Dell PowerConnect 28xx Systems User Guide 5 Inspect the product for damage Report any damage immediately Mounting the Device Overview There are three device mounting options e Installing in a Rack e Installing on a Flat Surface e Installing on a Wall Device Rack Installation AN CAUTION Read the safety information in the Product Information Guide as well as the safety information for other de
142. ops attempting to reach a pool address prior to assigning this address to a requesting client timeout is 500 milliseconds Use Default Reverts to the default Ping Timeout 500 milliseconds Enabling the DHCP Server 1 2 3 4 Open the DHCP Server Properties page Select Enable in the DHCP Server Status field Optionally select Enable in the DHCP Ping field to enable ping globally Define the number of ping retries in the DHCP Ping Retries field or click Use Default to select the default number of two retries Dell PowerConnect 28xx Systems User Guide 5 Define the amount of time in milliseconds the DHCP server waits for a ping reply in the DHCP Ping Timeout field or click Use Default to select the default timeout of 500 milliseconds 6 Click Apply Changes The server is enabled Defining Network Pool The Network Pool page displays the DHCP Server s created pool name The pool name which is typically assigned to a network segment consists of an IP address range from which the DHCP Server allocates IP addresses to DHCP clients You can define the lease duration of the network pool To open the Network Pool page click System gt DHCP Server Network Pool in the tree view Figure 6 25 Network Pool Dell OpenManage Switch Administrator Sport Help About Log Out DGLL PowerConnect 2816 10 5 225 74 Network Pool 3 Home Eh System Network Pool EH General IP Addressing H Diagnostics Man
143. ount of time in seconds that a RADIUS server is bypassed for service requests The range is 0 2000 Key String 0 128 Characters Specifies the Key string used for authenticating and encrypting all RADIUS communications between the device and the RADIUS server This key is encrypted Source IP Address Specifies the source IP address that is used for communication with RADIUS servers If host specific Timeouts Retries or Dead time values are not specified the Global values Defaults are applied to each host The following fields set the RADIUS default values Default Retries 1 10 Specifies the default number of transmitted requests sent to RADIUS server before a failure occurs Default Timeout for Reply 1 30 Specifies the default amount of the time in seconds the device waits for an answer from the RADIUS server before timing out Default Dead time 0 2000 Specifies the default amount of time in seconds that a RADIUS server is bypassed for service requests The range is 0 2000 Default Key String 0 128 Characters Specifies the Default Key string used for authenticating and encrypting all RADIUS communications between the device and the RADIUS server This key is encrypted Source Address Specifies the source IP address that is used for communication with RADIUS servers Defining RADIUS Parameters 1 Open the RADIUS Settings page 2 Define the fields 3 Click Apply Changes The RADIUS
144. posed from semiconductor material ICMP Internet Control Message Protocol Allows gateway or destination host to communicate with a source host for example to report a processing error IEEE Institute of Electrical and Electronics Engineers An Engineering organization that develops communications and networking standards IEEE 802 1d Used in the Spanning Tree Protocol IEEE 802 1d supports MAC bridging to avoid network loops IEEE 802 1p Prioritizes network traffic at the data link MAC sublayer IEEE 802 10 Defines the operation of VLAN Bridges that permit the definition operation and administration of VLANs within Bridged LAN infrastructures Image File The system image is saved in a Flash sector called image Ingress Port Ports on which network traffic is received IP Internet Protocol Specifies the format of packets and there addressing method IP addresses packets and forwards the packets to the correct port IP Address Internet Protocol Address A unique address assigned to a network device with two or more interconnected LANs or WANs IPX Internetwork Packet Exchange Transmits connectionless communications J Jumbo Frames Enables transporting the identical data in fewer frames Jumbo Frames reduce overhead lower processing time and ensures fewer interrupts L LAG Link Aggregated Group Aggregates ports or VLANs into a single virtual port or VLAN For more information on
145. ption 0 64 Characters Provides a user defined description of the configured LAG LAG Type The port types that comprise the LAG Admin Status Enables or disables traffic forwarding through the selected LAG Current LAG Status Indicates if the LAG is currently operating e Operational Status Operational status of the LAG Admin Auto Negotiation Enables or disables Auto Negotiation on the LAG Auto negotiation is a protocol between two link partners that enables a LAG to advertise its transmission rate and flow control the flow control default is abilities to its partner Current Auto Negotiation The currently configured Auto Negotiation setting Admin Speed The speed at which the LAG is operating Current LAG Speed The currently configured speed at which the LAG is operating e Admin Advertisement The speed that the LAG advertises Options include Maximum Capacity 10 MB Full Duplex 100 MB Full Duplex and 1000 MB Full Duplex Current Advertisement The port advertises its speed to its neighbor port to start the negotiation process The possible field values are those specified in the Admin Advertisement field e Neighbor Advertisement Indicates the neighboring port s advertisement settings The field values are identical to the Admin Advertisement field values Admin Flow Control Enables disables flow control or enables the auto negotiation of flow control on the LAG
146. r Properties Dell OpenManage Switch Administrator Support Help About Log Out PowerConnect 2816 10 5 225 74 DHCP Server Properties amp Home E System DHCP Server Properties General IP Addressing Diagnostics Management Se E SNMP File Managemer DHCP Server Status Disable E DHCP Server DHCP Ping Disable gt i f DHCP Serve a 5 Network Poo DHCP Ping Retries E F Use Default Excluded Ad DHCP Ping Timeout Static Hosts Address Binc W Advanced Settin Switch Statistics RMON Quality of Service I Use Default B A Al DHCP Server Status Indicates if the DHCP server is enabled The possible field values are Enable Enables the DHCP server Disable Disables the DHCP server This is the default value DHCP Ping Indicates if the DHCP server is set to ping the offered IP address before responding to a client request to ensure that the address is not in use The possible field values are Enable Enables ping on the DHCP server Disable Disables ping on the DHCP server DHCP Ping Retries Optionally specifies the number of pings that are sent before an IP address can be assigned to a requesting client The range is 1 to 10 and the default value is two Use Default Reverts to the default Ping Retries setting 2 retries DHCP Ping Timeout Optionally specifies the amount of time in milliseconds the DHCP server waits for a ping reply before it st
147. reen Ethernet Configurati Storm Control Port M See Address Tables Destination Port g1 Spanning Tree VLAN Link Aggregation Source Ports Multicast Support Statistics RMON Quality of Service Source Port i Status Remove 1 g4 tx and Rx notReady B C pl Ei Destination Port The port number to which port traffic is copied AAA Source Port Defines the port number from which port traffic is mirrored Type Indicates if the source port is RX TX or both RX and TX Status Indicates if the port is currently monitored Active or not monitored Ready Remove When selected removes the port mirroring session Adding a Port Mirroring Session 1 2 Open the Port Mirroring page Click Add The Add Source Port page opens Select the destination port from the Destination Port drop down menu Select the source port from the Source Port drop down menu Dell PowerConnect 28xx Systems User Guide 111 5 Define the Type field 6 Click Apply Changes The new source port is defined and the device is updated Deleting a Copy Port from a Port Mirroring Session 1 Open the Port Mirroring page 2 Select the Remove check box 3 Click Apply Changes The selected port mirroring session is deleted and the device is updated Configuring Address Tables MAC addresses are stored in the Dynamic Address database A packet addressed to a destination stored in the database is forwarded immediately to the po
148. ress Remove i D 111 1 1111 e 0 2 4 Switc peli Start IP Address Displays the first IP address in the range of excluded IP addresses End IP Address Displays the last IP address in the range of excluded IP addresses Adding an Excluded Address 1 Open the Excluded Addresses page 2 Click Add The Add Excluded page opens Figure 6 27 Add Excluded Add Excluded Start IP Address End IP Address 3 Define the relevant fields 4 Click Apply Changes The address is excluded and the device is updated Deleting Excluded Addresses 1 Open the Excluded Addresses page Dell PowerConnect 28xx Systems User Guide 87 2 Check the Remove checkbox next to an address 3 Click Apply Changes The address is deleted and the device is updated Manually Allocating IP Addresses Static Hosts The Static Hosts page is used to manually allocate IP addresses to network hosts To open the Static Hosts page click System gt DHCP Server gt Static Hosts in the tree view Figure 6 28 Static Hosts Dell OpenManage Switch Administrator Help About Log Out PowerConnect 2816 10 5 225 74 Static Hosts Home Poo H System Static Hosts H General IP Addressing Diagnostics Management Se SNMP E File Managemer B DHCP Server ooa Saa Host Name Excluded Ad IP Address y Static Hosts Network Mask Address Bin Ss Advanced Settin C Prefix Length H Switch amp Client Identifier El Statistics
149. rface 54 Uploading files 81 User Data Protocol 177 V Virtual Local Area Networks 177 VLAN 124 128 136 177 VLAN ID 113 VLAN membership 124 VLAN Port Membership Table 126 VLAN priority 144 VLANs 124 181 182 Internal Revision History for Online Help and User Guide Rev Date Updated by Description of Change A04 27 Feb 12 Yosi Katan transition to managed mode from unmanned or secured modes Updated the Config section to distinguish between PC2808 devices and PC2816 24 48 devices when performing a A03 10 Jan 12 Yosi Katan e Updated the Config section to support automatic config file saving when switching from managed mode to Unmanaged or Secure modes Yosi Katan e Deleted default IP gateway command e Added IP address command A02 02 Feb 10 Emarcus Package released to Dell AOl 19 Nov 09 Ezriel Removed the template and file path information from the Master pages Changed the revision number to reflect the document version as per Gil Shevach 0 2 1 6 06 Jan 10 Emarcus e Updated the section Defining Device IP Addresses in Configuring System Information chapter System2 fm to remove all mention of DHCP settings set to Delete condition from Gil Shevach Defining Device IP Addresses figure updated e Updated all LAG properties to up to 8 members per LAG and up to 8 LAGs per device from Gil Shevach 0 2 1 5 15 Nov
150. rt The Dynamic Address Table can be sorted by interface VLAN and interface type MAC addresses are dynamically learned as packets from sources arrive at the device Addresses are associated with ports by learning the ports from the frame s source address Frames addressed to a destination MAC address that is not associated with any port are flooded to all ports of the relevant VLAN In order to prevent the bridging table from overflowing dynamic MAC addresses from which no traffic is seen for a certain period are erased To open the Address Tables page click Switch gt Address Table in the tree view Viewing Dynamic Addresses The Dynamic Address Table contains fields for querying information in the dynamic address table including the interface type MAC addresses VLAN and table sorting Packets forwarded to an address stored in the address table are forwarded directly to those ports The Dynamic Address Table also contains information about the aging time before a dynamic MAC address is erased and includes parameters for querying and viewing the Dynamic Address list The Current Address Table contains dynamic address parameters by which packets are directly forwarded to the ports To open the Dynamic Address Table click Switch gt Address Table Dynamic Addresses Table in the tree view 112 Dell PowerConnect 28xx Systems User Guide Figure 7 15 Dynamic Address Table Dell OpenManage Switch Administrator Support Help About L
151. rts from which the packets copied Before configuring Port Mirroring note the following When a port is set to be a target port for a port mirroring session all normal operations on it are suspended This includes Spanning Tree Before configuring Port Mirroring note the following e Monitored port cannot operate faster than the monitoring port All the RX TX packets should be monitored to the same port The following restrictions apply to ports configured to be destination ports e Destination ports cannot be configured as a source port e Destination ports cannot be a LAG member IP interfaces are not configured on the port e GVRP is not enabled on the port The port is not a VLAN member e Only one destination port can be defined 110 Dell PowerConnect 28xx Systems User Guide The following restrictions apply to ports configured to be source ports Source ports cannot be a LAG member Source ports cannot be configured as a destination port All packets are transmitted tagged from the destination port Monitored all RX TX packets to the same port To open the Port Mirroring page click Switch Ports gt Port Mirroring in the tree view Figure 7 14 Port Mirroring Dell OpenManage Switch Administrator Support Help About Log Out PowerConnect 2816 10 5 225 74 Port Mirroring Home z e System Port Mirroring E Switch Network Security Print Refresh E Ports Port Configuration LAG Configuration D G
152. rypted password you enter copied from another device configuration Parameters range e name 20 characters e password 159 e level 1 15 Dell PowerConnect 28xx Systems User Guide 167 Default No user is defined Command modes Global Configuration Example Console config username bob password lee privilege 15 168 Dell PowerConnect 28xx Systems User Guide Glossary This glossary contains key technical words of interest A B C D E FGHI J L MN O P QR S T UV W A Auto negotiation Access Mode Specifies the method by which user access is granted to the system Access Profiles Allows network managers to define profiles and rules for accessing the device Access to management functions can be limited to user groups which are defined by the following criteria e Ingress interfaces Source IP address and or Source IP subnets ARP Address Resolution Protocol A TCP IP protocol that converts IP addresses into physical addresses ASIC Application Specific Integrated Circuit A custom chip designed for a specific application Asset Tag Specifies the user defined device reference Authentication Profiles Sets of rules which that enables login to and authentication of users and applications Allows 10 100 Mpbs or 10 100 1000 Mbps Ethernet ports to establish for the following features e Duplex Half Duplex Mode e Flow Control Speed B Back Pressure A mecha
153. s 170 Broadcasting A method of transmitting packets to all ports on a network Broadcast Storm An excessive amount of broadcast messages simultaneously transmitted across a network by a single port Forwarded message responses are heaped onto the network overloading network resources or causing the network to time out For more information about broadcast storms see Aggregating Ports c CDB Configuration Data Base A file containing a device s configuration information Class of Service Class of Service CoS Class of Service is the 802 1 p priority scheme CoS provides a method for tagging packets with priority information A CoS value between 0 7 is added to the Layer II header of packets where zero is the lowest priority and seven is the highest A overlapping transmission of two or more packets that collide The data transmitted cannot be used and the session is restarted Combo Ports A single logical port with two physical connections including an RJ 45 connection and an SFP connection CLI Command Line Interface A set of line commands used to configure the system Communities Specifies a group of users which retains the same system access rights CPU Central Processing Unit The part of a computer that processes information CPUs are composed of a control unit and an ALU D DHCP Client An Internet host using DHCP to obtain configuration parameters such as a network ad
154. s To open the Diagnostics page click System Diagnostics in the tree view e Viewing Optical Transceiver Diagnostics Applicable only for 24 48 port devices Viewing Copper Cable Diagnostics The Integrated Cable Test for Copper Cables page contains fields for performing tests on copper cables Cable testing provides information about where errors occurred in the cable the last time a cable test was performed and the type of cable error which occurred The tests use Time Domain Reflectometry TDR technology to test the quality and characteristics of a copper cable attached to a port Cables up to meters long can be tested Cables are tested when the ports are in the down state with the exception of the Approximated Cable Length test The cable length returned is an approximation in the ranges of up to 50 meters 50m 80m 80m 110m 110m m or more than m The deviation may be up to 20 meters To open the Integrated Cable Test for Copper Cables page click System Diagnostics Integrated Cable Test in the tree view Figure 6 7 Integrated Cable Test for Copper Cables Dell OpenManage Switch Administrator Support Help About Log Out PowerConnect 2816 10 5 225 74 Integrated Cable Test amp Home Eh System Integrated Cable Test General IP Addressing Diagnostics Integrated C Management Se SNMP File Managemer DHCP Server Advanced Settin Port ot E Switch Test Result Unknown Test Result E Statistics RMON
155. s Enter To Continue Dell PowerConnect 28xx Systems User Guide 51 3 Enter config as the name of the flash file The configuration is erased and the device reboots 4 Repeat the device initial configuration Password Recovery If a password is lost the Password Recovery procedure can be called from the Startup menu The procedure enables entry to the device once without a password To recover a lost password for the local terminal only 1 From the Startup menu type 3 and press lt Enter gt The password is deleted Z NOTE To ensure device security reconfigure passwords for applicable management methods Software Download Through TFTP Server This section contains instructions for downloading device software system and boot images through a TFTP server The TFTP server must be configured before beginning to download the software System Image Download The device boots and runs when decompressing the system image from the flash memory area where a copy of the system image is stored When a new image is downloaded it is saved in the other area allocated for the other system image copy On the next boot the device will decompress and run the currently active system image unless chosen otherwise To download a system image through the TFTP server 1 Ensure that an IP address is configured on one of the device ports and pings can be sent to a TFTP server Make sure that the file to be downloaded is saved on th
156. s VPT Dell PowerConnect 28xx Systems User Guide 144 DSCP values can be mapped to priority queues The following table contains the default DSCP mapping to forwarding queue values Table 9 2 DSCP to Queue Mapping Table Default Values DSCP Value Forwarding Queue Values 0 ql q2 q3 q4 DSCP mapping is enabled on a per system basis CoS Services After packets are assigned to a specific queue CoS services can be assigned to the queue s Output queues are configured with a scheduling scheme by one of the following methods e Strict Priority Ensures that time sensitive applications are always forwarded through an expedited path Strict Priority allows the prioritization of mission critical time sensitive traffic over less time sensitive applications For example under Strict Priority voice over IP traffic is forwarded before FTP or e mail SMTP traffic The strict priority queue is emptied before the traffic in the remaining queues is forwarded Weighted Round Robin Ensures that a single application does not dominate the device forwarding capacity Weighted Round Robin WRR forwards entire queues in a Round Robin order Queue priorities are defined by the queue length The longer the queue length the higher the queue s forwarding priority For example if queues have queue weights of packets with the highest forwarding priority are assigned to queue and packets with the lowest forwarding priority a
157. s for changing between Managed Mode and Unmanaged or Secure Mode and for resetting the device To transition between modes press the button normally To reset the device press and hold the button for at least 7 seconds For more information about management modes and transitioning between them see Management Modes on page 49 Switch Ventilation Fan The PowerConnect 2848 switch has three fans and the PowerConnect 2824 switch has one fan for system ventilation The PowerConnect 2808 and PowerConnect 2816 devices have no internal fans Dell PowerConnect 28xx Systems User Guide 23 24 Cables Port Connections and Pinout Information This section explains the switch physical interfaces and provides information about cables and port connections Copper cable diagnostics are supported High speed workstations hubs routers or other switches are connected through standard RJ 45 connectors to the switch physical interface ports located on the front panel For each device the supported mode is set to Half Duplex Full Duplex and Auto 1000BASE T Cable Requirements All Category 5 UTP cables that are used for 100BASE TX connections also operate with 1000BASE T provided if all four wire pairs are connected However it is recommended that enhanced Category 5 Category 5e cable is used for all critical connections or any new cable installations The Category 5e specification includes test parameters that are only recommendations for C
158. s of a network that share a common address component On TCP IP networks devices that share a prefix are part of the same subnet For example all devices with a prefix of 157 100 100 100 are part of the same subnet Subnet Mask Used to mask all or part of an IP address used in a subnet address Switch Filters and forwards packets between LAN segments Switches support any packet protocol type T TCP IP Transmission Control Protocol Internet Protocol Enables two hosts to communicate and exchange data streams TCP guarantees packet delivery and guarantees packets are transmitted and received in the order their sent Telnet Teletype Network Protocol A network protocol used on the Internet or local area networks to provide bidirectional interactive communications Enables system users to log in and use resources on remote networks TFTP Trivial File Transfer Protocol Uses User Data Protocol UDP without security features to transfer files Trap A message sent by the SNMP that indicates that system event has occurred Trunking Link Aggregation Optimizes port usage by linking a group of ports together to form a single trunk aggregated groups U UDP User Data Protocol Transmits packets but does not guarantee their delivery Unicast A form of routing that transmits one packet to one user V VLAN Virtual Local Area Networks Logical subgroups with a Local Area Network LAN created via
159. s the sending SNMP traps when authentication fails Enabling SNMP Notifications 1 Open the SNMP Global Parameters page 2 Select Enable in the SNMP Notifications field 3 Click Apply Changes SNMP notifications are enabled and the device is updated Enabling Authentication Notifications 1 Open the SNMP Global Parameters page 2 Select Enable in the Authentication Notifications field 3 Click Apply Changes 74 Dell PowerConnect 28xx Systems User Guide Defining Communities Access rights are managed by defining communities in the Community Table When the community names are changed access rights are also changed To open the SNMP Community page click System gt SNMP gt Community in the tree view Figure 6 16 SNMP Community Dell OpenManage Switch Administrator Support Help About Log Out DELL PowerConnect 2816 10 5 225 74 Home El System General IP Addressing Diagnostics Management Se SNMP Global Paran Community Community 0 00 Notification F SNMP Management Station 1922542545 File Managemer SNMP Management Station 192 254 254 5 DHCP Server Community String public y i Advanced Settin Access Mode SNMP Admin Switch Statistics RMON Quality of Service Remove mi _ mr zi SNMP Management Station A list of management station IP addresses Community String Functions as a password and used to authenticate the sel
160. s to the Simple Network Management Protocol command Use the no form of this command removes the specified community string snmp server community community ro rw su ypv address no snmp server community community 1pv address Syntax Description e community Community string that acts like a password and permits access to the SNMP protocol e ro Specifies read only access Default Dell PowerConnect 28xx Systems User Guide e rw Specifies read write access e su Specifies SNMP administrator access e ipv address Management station IPv4 address Default is all IP addresses Parameters range e community 20 chars e ip address Valid IP address Default No community is defined Command Mode Global configuration Usage Guidelines The logical key of the command is the pair community ip address If ip address is omitted then the key is community All Ips Examples Switch conf snmp server community public Command username To establish a username based authentication system use the username command in global configuration mode Use the no form to remove a user name username name password password level eve encrypted no username name Syntax Description e name The name of the user e password The authentication password for the user e level Specifies the user level If not specified the privilege level is 1 encrypted Enc
161. scard VLAN Packets classified to the Discard VLAN are dropped Frame Type Packet type accepted on the port Possible values are Admit Tag Only Only tagged packets are accepted on the port Admit All Both tagged and untagged packets are accepted on the port Ingress Filtering Enables or disables Ingress filtering on the port Ingress filtering discards packets that are destined to VLANs of which the specific is not a member Assigning Port Settings 1 Open the VLAN Port Settings page Select the port to which settings need to be assigned from the Port drop down menu 2 3 Complete the remaining fields on the page 4 Click Apply Changes Dell PowerConnect 28xx Systems User Guide The VLAN port settings are defined and the device is updated Displaying the VLAN Port Table 1 Open the VLAN Port Settings page 2 Click Show All The VLAN Port Table opens Figure 7 23 VLAN Port Table VLAN Interface Settings Table Defining VLAN LAG Settings The VLAN LAG Setting page provides parameters for managing LAGs that are part of a VLAN VLANs can either be composed of individual ports or of LAGs Untagged packets entering the device are tagged with the LAGs ID specified by the PVID To open the VLAN LAG Setting page click Switch gt VLAN LAG Settings in the tree view Dell PowerConnect 28xx Systems User Guide 129 Figure 7 24 VLAN LAG Setting Dell OpenManage Switch Administrator Support Help About
162. setting are updated to the device Adding a RADIUS Server 1 Open the RADIUS Settings page 2 Click Add The Add RADIUS Server page opens Dell PowerConnect 28xx Systems User Guide 71 Figure 6 13 Add RADIUS Server Page Add RADIUS Server 3 Define the fields 4 Click Apply Changes The new RADIUS server is added and the device is updated Displaying the RADIUS Server List 1 Open the RADIUS Settings page 2 Click Show All The Show all RADIUS Servers page opens Figure 6 14 Show all RADIUS Servers RADIUS Servers List hoszass o Detaut petaut Detaut fose T Apply Changes Modifying the RADIUS Server Settings 1 Open the RADIUS Settings page 2 Click Show All The RADIUS Servers List page opens 72 Dell PowerConnect 28xx Systems User Guide 3 Modify the relevant fields 4 Click Apply Changes The RADIUS Server settings are modified and the device is updated Deleting a RADIUS Server for the RADIUS Servers List 1 Open the RADIUS Settings page 2 Click Show All The RADIUS Servers List page opens 3 Select a RADIUS Server in the RADIUS Servers List 4 Select the Remove check box 5 Click Apply Changes The RADIUS server is removed from the RADIUS Servers List Defining SNMP Parameters Simple Network Management Protocol SNMP provides a method for managing network devices Devices supporting SNMP run a local software agent The SNMP agents maintain a list of
163. signed to the VLAN group and the device is updated Deleting a VLAN 1 2 3 4 Open the VLAN Membership page Click the VLAN ID or VLAN Name option button and select a VLAN from the drop down menu Select the Remove VLAN check box Click Apply Changes The selected VLAN is deleted and the device is updated Dell PowerConnect 28xx Systems User Guide 127 128 Defining VLAN Ports Settings The VLAN Port Settings page contains fields for managing ports that are part of a VLAN The port default VLAN ID PVID is configured on the VLAN Port Settings page All untagged packets arriving to the device are tagged by the ports PVID To open the VLAN Port Settings page click Switch gt VLAN gt Port Settings in the tree view Figure 7 22 VLAN Port Settings Dell OpenManage Switch Administrator Support Help About Log Out DOLL PowerConnect 2824 10 5 225 74 VLAN Port Settings S Home H System VLAN Port Settings El Switch Network Securit Ports Address Tables H Spanning Tree Eh VLAN VLAN Memb LAG Setting Port g1 i Link Aggregatior PVID 1 4095 fi Multicast Suppo Admita gt Statistics RMON Frame Type Admit All bd Quality of Service Ingress Filtering Enable A El Port The port number included in the VLAN PVID 1 4095 Assigns a VLA N ID to untagged packets The possible values are 1 4094 VLAN 4095 is defined as per standard and industry practice as the di
164. software rather than defining a hardware solution W WAN Wide Area Networks Networks that cover a large geographical area Wildcard Mask Specifies which IP address bits are used and which bits are ignored A wild card mask of 255 255 255 255 indicates that no bit is important A wildcard of 0 0 0 0 indicates that all the bits are important 178 Index Numerics 802 1d 15 A Access mode 75 Address Resolution Protocol 169 Aggregated link 131 AH 169 ARP 169 Asset 58 Auto Negotiation 37 B Boot Version 170 BootP 170 BPDU 170 Bridge Protocol Data Unit 170 Buttons 56 C Cables 64 65 CIDR 170 Command Mode Overview 154 Community table 75 CoS 147 D Defining device information 58 Device installation 30 Device view 54 DHCP 15 Dimensions 21 Downloading software 79 DSCP 144 171 DVMRPI 171 Dynamic Address List 113 E EAP 93 EPG 171 Extensible Authentication Protocol 93 F Fast Link 15 Fast link 117 File Transfer Protocol 172 Filtering 128 130 Firmware 80 Flow Control 37 FTP 172 G GARP 172 GARP VLAN Registration Protocol 172 GBIC 172 General Attributes Registration Protocol 172 GRE 172 GVRP 172 H Hardware version 60 Height 21 HMP 172 HOL 172 I ICMP 172 IDRP 172 IEEE 172 IEEE 802 1d 172 IEEE 802 1p 173 IEEE 802 1Q 173 IGMP 173 Image File 79 173 Ingress 173 Interface mode 156
165. ssigned to queue By providing highest forwarding priorit queues WRR processes higher priority traffic and ensures that low priority traffic is forwarded satisfactorily The scheduling scheme is enabled system wide Queues assigned to the strict priority policy are automatically assigned to the highest priority queue By default all values are set as Strict Priority Queue weight values can be assigned in any order using WRR and WRR values can be assigned system wide Best effort traffic is always assigned to the first queue Dell PowerConnect 28xx Systems User Guide 145 Defining CoS Global Parameters This section contains the following topics Defining CoS Settings Defining QoS Interface Settings Defining Queue Settings Mapping CoS Values to Queues Mapping DSCP Values to Queues Defining CoS Settings Defining CoS Settings Class of Service CoS global parameters are set from the CoS Settings page To open the CoS Settings page click Quality of Service CoS Global Parameters gt CoS Settings in the tree view Figure 9 1 CoS Settings Dell OpenManage Switch Administrator Support Help About Log Out PowerConnect 2816 10 5 225 74 CoS Settings S Home p a E System CoS Settings E Switch H Statistics RMON Ei Quality of Service B CoS Global Parameters i S Settings Jaen E Interface Settings CoS Mode Enable Queue Settings cos 602 1P CoS to Queue Trant Moda CoS 802 1P DSCP to Que
166. st the Privileged EXEC commands type a question mark at the command prompt and press lt Enter gt To return from Privileged EXEC Mode to User EXEC Mode use any of the following commands disable exit end or lt Ctl gt lt Z gt The following example illustrates accessing privileged EXEC mode and then returning to the User EXEC mode console gt enable Enter Password console console disable console gt Use the exit command to move back to a previous mode For example from Interface Configuration mode to Global Configuration mode and from Global Configuration mode to Privileged EXEC mode Global Configuration Mode Global Configuration commands apply to system features rather than a specific protocol or interface To access Global Configuration mode at the Privileged EXEC Mode prompt type configure and press lt Enter gt The Global Configuration Mode displays as the device host name followed by config and the pound sign console config To list the Global Configuration commands enter a question mark at the command prompt To return from Global Configuration mode to Privileged EXEC mode type the exit command or use the lt Ctrl gt lt Z gt command Dell PowerConnect 28xx Systems User Guide 155 156 The following example illustrates how to access Global Configuration Mode and return back to the Privileged EXEC Mode console console configure console config exit console Interfa
167. stallation Precautions 2 ee 27 Site Requirements 28 Unpacking se oces mio Oe naii RA OR ew ee de A 28 Package Contents 22 26k Gb A eR as 28 Unpacking the Device 2 0 0 0 a 28 Mounting the Device ee 29 Overview Ji ade Bae a a whe Bae A i 29 Device Rack Installation 2 0 en 29 Installing on a Flat Surface 2 en 30 Installing on a Wall 2 2 00 00 00000020000 31 Connecting the Device ee 33 Connecting the Device to the Network 0 0 0 33 Connecting the Terminal to the Device 0 ee 33 Connecting a Device to a Power Supply 34 Port Connections Cables and Pinout Information 35 RJ 45 Connections for 10 100 1000BaseT Ports 2 35 Port Default Settings 2 2 ee 37 Auto Negotiation 0 a 37 MDIMDES rie snd ee tal Ae ea es gata RO 37 Flow Control aaa 37 Back Pr SSULE 00 a gk is ds eA EWE BK BE BO 37 Switching Port Default Settings 0 0 0 38 Starting and Configuring the Device 39 Management Modes o 40 Transitioning Between Modes o 42 Booting the Device Managed Mode 0 44 Initial Configuration Through the Set up Wizard 44 Initial Configuration Through the Web 0 0 0 Basic Configuration 2 2 0 Retrieving an IP Address From a DHCP Server
168. stem services e Authentication Server Specifies the external server for example the RADIUS server that performs the authentication on behalf of the authenticator and indicates whether the user is authorized to access system services Port based authentication creates two access states e Controlled Access Permits communication between the user and the system if the user is authorized Uncontrolled Access Permits uncontrolled communication regardless of the port state The device currently supports Port Based Authentication via RADIUS servers Advanced Port Based Authentication Advanced Port Based Authentication enables multiple hosts to be attached to a single port Advanced Port Based Authentication requires only one host to be authorized for all hosts to have system access If the port is unauthorized all attached hosts are denied access to the network Advanced Port Based Authentication also enables user based authentication Specific VLANs in the device are always available even if specific ports attached to the VLAN are unauthorized For example Voice over IP does not require authentication while data traffic requires authentication VLANs for which authorization is not required can be defined Unauthenticated VLANs are available to users even if the ports attached to the VLAN are defined as authorized Dell PowerConnect 28xx Systems User Guide 93 Advanced Port Based Authentication is implemented in the fol
169. t a port in the Port Field 3 Modify the remaining fields 4 Click Apply Changes The port parameters are saved to the device Displaying the Port Configuration Table 1 Open the Port Configuration page 2 Click Show All The Ports Configuration Table opens Figure 7 8 Ports Configuration Table Port Configuration Table Port Port Port Port Duplex Auto Back Type Status Speed Mode Negotiation Pressure gl 1000M copper 000 Full Disable y u 100M Full Enable Disable g2 1000M copper Up y fi 000M z E ull Enable Disable Down g3 1000M copper Up y 100K z lr ull z Enable Disable Aggregating Ports Load Balancing enables the even distribution of data and or processing packets across available network resources For example load balancing may distribute the incoming packets evenly to all servers or redirect the packets to the next available server Load Balancing is configured on the LAG Configuration on page 104 page Dell PowerConnect 28xx Systems User Guide 103 104 LAGs can be configured according to the following load balancing types Layer 2 Layer 2 and Layer 3 or Layer 3 The LAG Configuration page contains fields for configuring parameters for configured LAGs The device supports up to eight LAGs and each LAG can have up to eight members For information about To open the LAG Configuration page click Switch Ports LAG Configuration in the tree view If port configuration is modifie
170. tch or server 2 Make sure each twisted pair cable does not exceed 328 feet 100 meters in length As each connection is made the link LED corresponding to each port on the device is illuminated green or amber indicating that the connection is valid Connecting the Terminal to the Device The device provides an external console port in models 28016 24 48 The console port enables a connection to a terminal desktop system running terminal emulation software for monitoring and configuring the device The Console port connector is a male DB 9 connector implemented as a data terminal equipment DTE connector To use the Console port the following is required VT100 compatible terminal or a desktop or portable system with a serial port and running VI 100 terminal emulation software e An RS 232 crossover cable with a female DB 9 connector for the Console port and the appropriate connector for the terminal To connect a terminal to the device Console port perform the following 1 Connect the supplied RS 232 crossover cable to the terminal running VT 100 terminal emulation software 2 Ensure that the terminal emulation software is set as follows a Select the appropriate serial port serial port 1 or serial port 2 to connect to the console Dell PowerConnect 28xx Systems User Guide 33 b Set the data rate to 9600 baud c Set the data format to 8 data bits 1 stop bit and no parity d Set flow control to none e Under
171. tems User Guide 143 Configuring Quality of Service This section provides information for defining and configuring Quality of Service QoS parameters To open the Quality of Service page click Quality of Service in the tree view An implementation example that requires QoS includes certain types of traffic such as Voice Video and real time traffic which can be assigned a high priority queue while other traffic can be assigned a lower priority queue The result is an improved traffic flow for traffic with high demand QoS is defined by e Classification Specifies which packet fields are matched to specific values All packets matching the user defined specifications are classified together e Action Defines traffic management where packets being forwarded are based on packet information and packet field values such as VLAN priority VPT and DSCP DiffServ Code Point VPT Tag Classification Information VLAN Priority Tags are used to classify the packets by mapping packets to one of the output queues VLAN Priority Tag to queue assignments are user definable The table below details the VPT to queue default settings Table 9 1 CoS to Queue Mapping Table Default values CoS Value Forwarding Queue Values 0 q 1 ql 2 ql 3 q 4 q 5 q 6 q 7 q Packets arriving untagged are assigned a default VPT that is set on a per port basis The assigned VPT is used to map the packet to the output queue and as the egres
172. tes the amount of time in seconds a bridge waits before sending configuration messages The default max age is 20 seconds Forward Delay 4 30 Specifies the device forward delay time The Forward Delay Time indicates the amount of time in seconds a bridge remains in a listening and learning state before forwarding packets The default is 15 seconds Bridge ID Identifies the Bridge priority and MAC address Root Bridge ID Identifies the Root Bridge priority and MAC address Root Port The port number that offers the lowest cost path from this bridge to the Root Bridge It is significant when the Bridge is not the Root The default is zero Root Path Cost The cost of the path from this bridge to the root Topology Changes Counts Specifies the total amount of STP state changes that have occurred since the last reboot Last Topology Change The amount of time that has elapsed since the bridge was initialized or reset and the last topographic change occurred The time is displayed in a day hour minute second format for example 0 day 1 hour 34 minutes and 38 seconds Defining STP Global Parameters 1 oa Aa W N Open the STP Global Settings page Select the port that needs to be enabled from the Select a Port drop down menu Select Enable in the Spanning Tree State field Select the STP mode in the STP Operation Mode field and define the bridge settings Click Apply Changes STP is enabled on the device
173. the interface components with their corresponding numbers Dell PowerConnect 28xx Systems User Guide 54 Table 5 1 Interface Components Component Name 1 The tree view contains a list of the different device features The branches in the tree view can be expanded to view all the components under a specific feature or retracted to hide the feature s components By dragging the vertical bar to the right the tree area can be expanded to display the full name of a component 2 The information buttons provide access to information about the device and access to Dell Support For more information see Information Buttons 3 The components list contains a list of the feature components Components can also be viewed by expanding a feature in the tree view Using the Switch Administrator Buttons This section describes the buttons found on the OpenManage Switch Administrator interface Information Buttons Information buttons provide access to on line support and online help as well as information about the OpenManage Switch Administrator interfaces Table 5 2 Information Buttons Button Description Support Opens the Dell Support page at support dell com Help Online help containing information to assist in configuring and managing the device The online help pages are linked directly to the page currently open For example if the IP Addressing page is open the help topic for that page opens when Help is
174. the port status On the left side of the front panel is the Managed Mode LED which indicates the Ethernet switch operational status and the management mode The Power LED on the front panel indicates whether the device is powered on or not A Mode push button located on the right side on the front panel is used to transition between management modes and to reset the device For more information about management modes and transitioning between them see Management Modes on page 49 Dell PowerConnect 28xx Systems User Guide 17 Figure 2 2 PowerConnect 2808 Back Panel 100 240VAC AC Power Supply Interface Figure 2 3 PowerConnect 2816 Front Panel Power PowerConnect 2816 Managed Mode 2 4 6 8 10 12 14 16 Managed Mode LED Button On the front panel there are 16 ports which are numbered to 16 top down and left to right On each port there are LEDs to indicate the port status On the left side of the front panel is the Managed Mode LED which indicates the Ethernet switch operational status and the management mode The Power LED on the front panel indicates whether the device is powered on or not A Mode push button located on the right side on the front panel
175. tical Transceiver Diagnostics in the tree view Dell PowerConnect 28xx Systems User Guide 65 Figure 6 8 Optical Transceiver Diagnostics Dell OpenManage Switch Administrator i Support Help About Log Out 192 168 2 1 Optical Transceiver Diagnostics S Home s g A A E System Optical Transceiver Diagnostics General IP Addressing Bint Refresh E Diagnostics Integrated Cable Test Show All Optical Transceiver Diagnostic Management Security H SNMP File Management Port TH DHCP Server Advanced Settings E Switch Statistics RMON Value Status Quality of Service Temperature Not Applicable C Not Relevant Voltage Not Applicable V Not Relevant Current Not Applicable mA Not Relevant Output Power Not Applicable matt Not Relevant Input Power Not Applicable matt Not Relevant Transmitter Fault Not Applicable Not Relevant Loss of Signal Not Applicable Not Relevant Data Ready Not Applicable Not Relevant E El x The Optical Transceiver Diagnostics page contains the following fields Port The port to which the fiber cable is connected Temperature The temperature in Celsius at which the cable is operating Voltage The voltage at which the cable is operating Current The current at which the cable is operating e Output Power The rate at which the output power is transmitted Input Power The rate at which the input power is transmitted Transmitter Fault Indicat
176. ts Attribute Euren a i Address Binding Jumbo Frames Enabled Enable y 8 Settings Switch Statistics RMON Quality of Service y 4 E Attribute The general setting attribute General Settings la Current The currently configured value e After Reset The future after reset value e Jumbo Frames Enables or disables the Jumbo Frames feature Jumbo Frames enable the transportation of identical data in fewer frames This ensures less overhead lower processing time and fewer interrupts 92 Dell PowerConnect 28xx Systems User Guide Configuring Device Switching This section provides all system operation and general information for configuring network security ports Address tables GARP VLANs Spanning Tree Port Aggregation and Multicast Support Configuring Network Security The device enables network security through both Access Control Lists and Locked Ports Port Based Authentication 802 1x Port based authentication enables authenticating system users on a per port basis via a external server Only authenticated and approved system users can transmit and receive data Ports are authenticated via the RADIUS server using the Extensible Authentication Protocol EAP Port Authentication includes Authenticators Specifies the port that is authenticated before permitting system access Supplicants Specifies host connected to the authenticated port requesting to access the sy
177. ts port based authentication on the device The possible field values are Enable Enables port based authentication on the device Disable Disables port based authentication on the device e Authentication Method The Authentication method used The possible field values are 94 Dell PowerConnect 28xx Systems User Guide None No authentication method is used to authenticate the port RADIUS Port authentication is performed using the RADIUS server RADIUS None Port authentication is performed first using the RADIUS server If the port is not authenticated then no authentication method is used and the session is permitted e Guest VLAN Specifies whether the Guest VLAN is enabled on the device The possible field values are Enable Enables using a Guest VLAN for unauthorized ports If a Guest VLAN is enabled the unauthorized port automatically joins the VLAN selected in the VLAN List field Disable Disables This is the default e VLAN List When Guest VLAN is enabled this field specifies which VLAN the guest will belong to e Interface Contains an interface list User Name The user name as configured in the RADIUS server Admin Interface Control Defines the port authorization state The possible field values are Current Interface Control The currently configured port authorization state e Guest VLAN Specifies whether the Guest VLAN is enabled
178. ue T El S s Cos Mode Enables or disables managing network traffic using Quality of Service Trust Mode Determines which packet fields to use for classifying packets entering the device When no rules are defined the traffic containing the predefined packet field CoS or DSCP is mapped according to the relevant trust modes table Traffic not containing a predefined packet field is mapped to best effort The possible Trust mode field values are CoS 802 1P The output queue assignment is determined by the IEEE802 1p VLAN priority tag VPT or by the default VPT assigned to a port DSCP The output queue assignment is determined by the DSCP field Enabling Quality of Service 146Dell PowerConnect 28xx Systems User Guide Open the CoS Settings page Select Enable in the CoS Mode field Click Apply Changes Class of Service is enabled on the device Selecting Trust 1 2 3 Open the CoS Settings page Select Trust in the Trust Mode field Click Apply Changes Trust is selected Defining QoS Interface Settings The Interface Settings page contains fields for defining per interface if the selected Trust mode is to be activated The default priority for incoming untagged packets is also selected in the Interface Settings page To open the Interface Settings page click Quality of Service gt CoS Global Parameters gt Interface Settings in the tree view Figure 9 2 Interface Settings Dell OpenMa
179. ueries and what routing protocols are forwarding packets and Multicast traffic Ports requesting to join a specific Multicast group issues an IGMP report specifying that Multicast group This results in the creation of the Multicast filtering database The Multicast Global Parameters page contains fields for enabling Bridge Multicast Filtering and IGMP Snooping on the device To open the Multicast Global Parameters page click Switch Multicast Support gt Global Parameters in the tree view Figure 7 26 Multicast Global Parameters Dell OpenManage Switch Administrator Support Help About Log Out PowerConnect 2816 10 5 225 74 Multicast Global Parameters Home E System Multicast Global Parameters E Switch CA Chapa D Network Security tint Refresh Ports Address Tables Spanning Tree VLAN Bridge Multicast Filtering Enable Link Aggregation IGMP Snooping Status Enable y Multicast Support Global Paramete Bridge Multicast Bridge Multicast F y al Bridge Multicast Filtering Enables or disables bridge Multicast filtering Disabled is the default value IGMP Snooping can be enabled only if Bridge Multicast Filtering is enabled IGMP Snooping Status Enables or disables IGMP Snooping on the device Disabled is the default value 0 0 0 0 0 0 0 Enabling Bridge Multicast Filtering on the Device 1 Open the Multicast Global Parameters page 2 Select Enable in the Bridge Multicast Filteri
180. variables which are used to manage the device The variables are defined in the Management Information Base MIB The MIB contains the variables controlled by the agent The SNMP protocol defines the MIB specification format as well as the format used to access the information over the network Access rights to the SNMP agents are controlled by access strings To communicate with the device the Embedded Web Server submits a valid community string for authentication To open the SNMP page click System SNMP in the tree view This section contains information for managing the SNMP configuration Dell PowerConnect 28xx Systems User Guide 73 Defining SNMP Global Parameters The SNMP Global Parameters page permits enabling both SNMP and Authentication notifications To open the SNMP Global Parameters page click System SNMP gt Global Parameters in the tree view Figure 6 15 Global Parameters Support Help About Log Out Dell OpenManage Switch Administrator PowerConnect 2816 10 5 22574 Global Parameters OO amp Home B System Global Parameters H General IP Addressing Diagnostics Management Se File Managemer SNMP Notifications JEnable DHCP Server Authentication Notifications Disable gt Advanced Settin Switch Statistics RMON Quality of Service toe El e SNMP Notifications Enables or disables the sending SNMP notifications Authentication Notifications Enables or disable
181. vice manually through the device CLI mode see Managing the Device Using the CLI on page 153 The Setup Wizard configures the following fields SNMP Community String and SNMP Management System IP address optional Username and Password Device IP address IP subnet mask Default Gateway IP address The Setup Wizard displays the following information Welcome to Dell Easy Setup Wizard The Setup Wizard guides you through the initial switch configuration and gets you up and running as quickly as possible You can skip the setup wizard and enter CLI mode to manually configure the switch The system will prompt you with a default answer by pressing enter you accept the default You must respond to the next question to run the setup wizard within 60 seconds otherwise the system will continue with normal operation using the default system configuration Would you like to enter the setup wizard you must answer this question within 60 seconds Y N Y Y NOTE If you select not to use the Setup Wizard you can access the Web interface by using the default IP address mask 192 168 2 1 255 255 255 0 NOTE You can exit the Setup Wizard at any time by entering Ctrl Z Dell PowerConnect 28xx Systems User Guide 45 46 Wizard Step 1 The following information displays The system is not setup for SNMP management by default To manage the switch using SNMP required for Dell Network Manager you can
182. vices that connect to or support the switch AN CAUTION Disconnect all cables from the device before mounting the device in a rack or cabinet AN CAUTION When mounting multiple devices into a rack mount the devices from the bottom up Install the device in a rack as follows 1 Place the supplied rack mounting bracket on one side of the device ensuring the mounting holes on the device line up to the mounting holes on the rack mounting bracket The following figure illustrates where to mount the brackets Dell PowerConnect 28xx Systems User Guide 29 Figure 3 1 Bracket Installation for Rack Mounting 2 Insert the supplied screws into the rack mounting holes and tighten with a screwdriver 3 Repeat the process for the rack mounting bracket on the other side of the device 4 Insert the device into the rack ensuring the rack mounting holes on the device line up to the mounting hole on the rack 5 Secure the device to the rack with the rack screws not provided Fasten the lower pair of screws before the upper pair of screws Ensure that the ventilation holes are not obstructed Installing on a Flat Surface The device must be installed on a flat surface if it is not installed on a rack The surface must be able to support the weight of the device and the device cables 1 Attach the self adhesive rubber pads provided with the device on each marked location on the bottom of the chassis 2 Set the device on a flat surface while lea
183. view Defining STP Global Settings The STP Global Settings page contains parameters for enabling and configuring STP operation on the device To open the STP Global Settings page click Switch Spanning Tree gt Global Settings in the tree view Dell PowerConnect 28xx Systems User Guide Figure 7 16 STP Global Settings Dell OpenManage Switch Administrator Support Help About Log Out PowerConnect 2816 10 5 225 74 Spanning Tree Global Settings S Home i H System Spanning Tree Global Settings E Switch Network Security Pit Refresh Ports W Address Tables E Spanning Tree _ Global Settings Spanning Tree State Enable gt SE Pa zng STP Operation Mode Rapid STP y ings 3 gt Rapid Spanning Tree BPDU Handling Flooding H VLAN Path Cost Default Values Short Link Aggregation E Multicast Support Statistics RMON a Setti Quality of Service Priority 0 61440 in steps of 4096 32768 Hello Time 1 10 fe Sec C Max Age 6 40 0 Sec Forward Delay 4 30 fis Sec Designated Root Bridge ID 32768 00 88 77 66 55 33 Root Bridge ID 32768 00 88 77 66 55 33 Rant Dart n z Spanning Tree State Enables or disables Spanning Tree on the device The possible field values are Enable Enables Spanning Tree Disable Disables Spanning Tree e STP Operation Mode The STP mode by which STP is enabled on the device The possible field values are Classic STP Enables Classic STP
184. ving 2 inches 5 08 cm on each side and 5 inches 12 7 cm at the back 3 Ensure that the device has proper ventilation 30 Dell PowerConnect 28xx Systems User Guide Installing on a Wall To mount the device on a wall 1 Ensure that the mounting location meets the following requirements The surface of the wall must be capable of supporting the device Allow at least 2 inches 5 1 cm space on the sides for proper ventilation and 5 inches 12 7 cm at the back for power cable clearance The location must not be exposed to direct sunlight The location must be at least 2 feet 61 cm away from any heating vents and no area heating vent should point towards the device The location must be ventilated to prevent heat buildup Do not locate the device near any data or electrical cabling The power cable must be able to reach an outlet 2 Place the supplied wall mounting bracket on one side of the device ensuring that the mounting holes on the device line up to the mounting holes on the rack mounting bracket The following figure illustrates where to mount the brackets Figure 3 2 Bracket Installation for Wall Mounting 3 Insert the supplied screws into the rack mounting holes and tighten with a screwdriver 4 Repeat the process for the wall mounting bracket on the other side of the device 5 Place the device on the wall in the location where the device is being installed Dell PowerConnect 28xx Systems User Guide
185. werConnect 28xx Systems User Guide Starting and Configuring the Device After completing all external connections the device must be configured This section describes various methods of configuring the device K NOTE The PowerConnect 2808 has an internal serial port K NOTE Before proceeding read the release notes for this product The release notes can be downloaded from http support dell com It is recommended that you obtain the most recent revision of the user documentation from the Dell support website at http support dell com K NOTE If the device is to be used as an unmanaged switch there is no need for a terminal connection A terminal connection is only required if the device is to be used in Managed mode See Management Modes on page 40 for a description of these modes Figure 4 1 provides an overview of the device initialization process This section covers the following topics e Management Modes on page 40 Transitioning Between Modes on page 42 Booting the Device Managed Mode on page 44 e Initial Configuration Through the Set up Wizard on page 44 e Initial Configuration Through the Web on page 48 Startup Menu on page 50 Dell PowerConnect 28xx Systems User Guide 39 Figure 4 1 Installation and Configuration Flow Connect Device and Hardware Console Setup Power On Suspend Bootup Press Loading Progra
186. xample parts of an IP address For example Unit 2 is inserted in the first minute of a ten minute cycle and Unit 1 is inserted in fifth minute of the same cycle the units are considered the same age MD gt Message Digest 5 An algorithm that produces a 128 bit hash MDS is a variation of MD4 and increases MD4 security MD5 verifies the integrity of the communication authenticates the origin of the communication MDI Media Dependent Interface A cable used for end stations MDIX Media Dependent Interface with Crossover MDIX A cable used for hubs and switches 174 MIB Management Information Base MIBs contain information describing specific aspects of network components Multicast Transmits copies of a single packet to multiple ports N NMS Network Management System An interface that provides a method of managing a system Node A network connection endpoint or a common junction for multiple network lines Nodes include e Processors e Controllers e Workstations 0 OID Object Identifier Used by SNMP to identify managed objects In the SNMP Manager Agent network management paradigm each managed object must have an OLD to identify it P Packets Blocks of information for transmission in packet switched systems PDU Protocol Data Unit A data unit specified in a layer protocol consisting of protocol control information and layer user data PING Packet Internet Groper
187. ystem gt IP Addressing gt IP Interface Parameters screen Figure 4 4 Web management IP Interface Parameters Dell OpenManage Switch Administrator Support Help About Log Out Home 5 i a 6 10 5 234 230 IP Interface Parameters System IP Interface Parameters Switch A EA Statistics RMON Brint Refresh Quality of Service DHCP Disable Y IP Address 10 5 234 230 KXXX Subnet Mask 255 255 255 0 KXXX Default Gateway 10 5 234 254 KXXX Enter the IP Address Subnet Mask and Default Gateway 7 Click Apply Changes The device is configured Retrieving an IP Address From a DHCP Server The device can be set to receive its IP address from a DHCP server In this case the configuration received from the DHCP server includes the IP address and might include subnet mask and default gateway When using the DHCP protocol to retrieve an IP address the device acts as a DHCP client When the device is reset the DHCP command is saved in the configuration file but not the IP address Dell PowerConnect 28xx Systems User Guide 49 50 Startup Menu The procedures called from the Startup menu cover software download flash handling and password recovery The diagnostics procedures are for use by technical support personnel on y and are not disclosed in the document The Startup menu can be entered when booting the device user input must be entered immediately after the POST test To enter the Startup menu

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