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3Com 3C16405, 3C16406, 3C16450 Switch User Manual

1. 1 Screen TxD 3 3 RxD RxD 2 e 2 TxD Ground 5 e 7 Ground RTS 7 wc mc 4 RTS CTS 8 e 20 DTR DSR 6 15 CTS DCD 11e 6 DSR DTR 4 8 DCD Figure A 6 Example of Null Modem Cabling for 25 pin Management Station Modem Cable seen Serial Port 9 pin male 25 pin female Screen Shell e Screen TxD 3j e 2 TxD RxD 2 3 RxD RTS 7 4 RTS CTS 8 e 5 CTS DSR 6 e 6 DSR Ground 5e e 7 Ground DCD 1 8 DCD DTR 4 le e 20 DTR Figure A 7 Example of Modem Cabling for 25 pin Management Station DUA1640 5AAA02 A 6 APPENDIX A DIMENSIONS STANDARDS AND CABLING Cascade Connections Cascade cables are available in a range of lengths from your supplier Hot Swap Cascade Units are also available Table A 4 shows the product numbers and the lengths of these items Table A A Cascade Cables and Units Number Cable Length 3C16420 Cascade cable 0 3m 11 8in 3C 16421 Cascade cable 1m 39 5in 3C16422 Cascade cable 3m 118 6in 3C16430 Hot Swap Cascade Unit Management Settings Table A 5 shows the settings you need to set your management station s serial port to if you are managing the PS Hub directly through its console port Table A 5 Management Station Settings Data bits character size 8 Stop bit 1 Parity None DUA1640 5AAA02 MANAGEMENT USING QUICK CONFIG
2. Community Sin manager DUA1640 5AAA02 st Cateaorv st Console Confiauration Access Information Switch Canfinuratinn Resilience Links feel General Info Floor 1 hub tegorv Ea Eg Cateaorv Category Resilience Seament Confiauration Seament Statistics Stack Information ECE D Mib Il B 27 fm General Info Floor 1 hub D ul General Info Floor 1 hub Ej B 17 Ea Lx Cateaorv Co 2 B 14 nv i 21 sysDeser 3Com SuperStack Il Repeater SW Version 01 sysObiectid 1 3 6 1 4 1 43 10 27 4 1 1 hrs 11 mins 25 secs Cancel Befresh Network Admin 3c4297abc Floor 1 hub Finance department sysServices To see more options click on the category list at left B 7 B 8 APPENDIX B MANAGEMENT USING QUICK CONFIG MANAGER Accessing the Stack The PS Hub uses community strings as a security measure to check management access to the stack The community string you use must match one of the community strings configured for the stack Quick Config Manager remembers the last community string used The default community string is security which allows you to view and configure the stack s information We recommend you change the community string as soon as possible for security reasons use the Edit Access Levels dialog box but ensure you remember the community strin
3. This functionality in Quick Config Manager is not available if there is not a PS Hub 50 in the stack To configure the segment switch 1 Do one of the following a Double click on the graphical representation of the stack but not on a port m From the Configure menu select General Info 2 In the General Info dialog box select the Switch Conf category Quick Config Manager displays the Switch Configuration panel as shown in Figure B 7 General Info Floor 1 hub xi Category Cancel Select the cascade segments to be switched Iv Segment 1 Switch Configuration FM Segment 2 Switch Conf IV Segment 3 IV Segment 4 Access Conf Console Conf To see more options click on the category list at left Figure B 7 Switch Configuration Panel 3 Use the checkboxes to connect or isolate the segment switch from the cascaded segments as required 4 Click OK DUA1640 5AAA02 B 18 APPENDIX B MANAGEMENT USING QUICK CONFIG MANAGER Load Balancing The PS Hub has a load balancing feature which you can use to move the ports between the segments in the stack for you The aim of load balancing is to reduce total traffic across the segments It does this by distributing the traffic between the segments and keeping the stations that frequently communicate with each other on the same cascaded segment which provides more efficient segments If enabled it works by continually monitoring the traffic th
4. a Connect the cables connectors marked DOWN to the DOWN ports on the Hot Swap Cascade Units Secure the cables by tightening the cables captive screws as tight as possible by hand 3 Starting at the bottom connect the bottom Hot Swap Cascade Unit to the UP and DOWN port of the unit Secure the Hot Swap Cascade Unit in place by tightening its long captive screws as tight as possible by hand 4 Continue up the stack repeating step 3 for each unit as shown in Figure 3 6 Figure 3 6 Connecting PS Hubs Together Using Hot Swap Cascade Units DUA1640 5AAA02 3 16 CHAPTER 3 USING THE PS HUB Connecting Different Hubs and Stacks to Your Hub gt You can connect the PS Hub to different hubs and stacks for example a stack of SuperStack II Hub 10 units giving you flexibility when creating a new network or expanding an existing network In order to conform with Ethernet rules you can only have four repeaters in series For a stack of more than one PS Hub any path through the stack counts as going through two logical repeaters Each of the PS Hub s 10BASE T ports are internally crossed MDIX The type of cable and ports used must be correct for the connection to work m You can use Straight through 10BASE T cable to connect a crossover MDIX port to an uncrossed MDI port m You can use Crossover 10BASE T cable to connect two crossover MDIX ports The last port port 12 or 24 on the
5. step 7 a The null modem cable is not connected to the hub s COM port m The null modem cable is not connected to the PC s serial port or the serial port being used is not the same as the serial port specified in the upgrade command m The hub was not powered off and on as directed Retry the command ensuring that you follow all the steps An error occurred when the utility tried to open the agent software file for reading There could be two reasons for this m The file specified in the upgrade command does not exist or is in a different directory to the one given Check the filename and its location m You do not have read access for the file Check the file s properties using Explorer in Windows 95 or File Manager in other versions of Windows The error message USAGE update c comport filename is returned You have not specified the correct number of parameters for the upgrade command Retry with the correct parameters D 4 APPENDIX D AGENT UPGRADE UTILITY An error occurred when the utility tried to transfer the file There could be a number of reason for this m The null modem cable has become disconnected from the hub or the PC during the file transfer Reconnect the cable and start again m Power to the hub has been disrupted during the file transfer Check the power connection to the hub and start again m An incorrect file has been specified and transferred to the hub Check the filenames and start agai
6. B 6 APPENDIX B MANAGEMENT USING QUICK CONFIG MANAGER Transcend Quick Configuration Manager Configure Device Access Zoom In Community Polling Reset View Update Zoom IP Setup nt Upgrade General Info Reset Initialize Load Balance Device Access Serial C Network E Zoom In Floor 1 stack Device Network IP Addiess Port colors indicate Green Port enabled and capable of repeating traffic to and from the network link present Red Port enabled but unable to repeat traffic to and from the network link lost or port partitioned Blue Port disabled by management Port Configuration Unit 1 Port 16 Security Configuration Cateaorv Port Configuration Unit 1 Port 16 em Repeater Port Info ES Media Type Twisted Pair Partition State Not Partitioned Lotes 8 Link State Not Present Sa Detail Graph on Segment lt Seg 1 gt LEE Security z View Port Enable Disable Sh Port Detail Graph Unit 1 Port 24 ix Port State c T Summary Patton Trage c e T Detailed D Sh Port Summary Graph Unit 1 Port 24 BEI ES Link Traps E c Member Segment ie E Segment 1 Seg 0 1 m d E 60 f Y BandWidth Percentage To see more options click on the category list at left 40 20 4
7. MANAGEMENT USING THE WEB INTERFACE Accessing the Web Interface 7 1 About the Web Interface 7 4 General Components 7 4 Page Components 7 6 Web Interface Map 7 6 vi Using the Web Interface 7 7 Unit View and Unit Pages 7 8 User Access Levels 7 9 Exiting the Web Interface 7 9 Online Help System and Documentation 7 9 Unit Pages 7 10 Unit View 7 10 Unit Status 7 11 Management Addres 7 12 Port Setup 7 13 Console Port Configuration 7 14 Segment Configuration 7 15 Switch Configuration 7 16 Permanent Address Management 7 16 Management Settings Pages 7 17 Documentation 7 17 Getting Started 7 18 Password Setting 7 19 System Name 7 19 Configuration Pages 7 20 Initialize 7 20 Load Balancing 7 20 Reset 7 20 Resilient Links 7 21 Add Resilient Link 7 23 Software Upgrade 7 24 Health Pages 7 25 Segment Graph 7 25 PROBLEM SOLVING Isolating a Problem 8 1 Solving Problems With the Hub 8 2 Solving Problems With the Command Line Interface 8 3 Solving Problems With the Web Interface 8 4 Solving Problems With an SNMP Network Management Application 8 5 DIMENSIONS STANDARDS AND CABLING Dimensions and Operating Environment A 1 BABT Approval for U K Users Only A 1 Standards A 2 Cabling A 3 10BASE T Cable A 3 Console Cable A 4 Modem Cable A 5 Cascade Connections A 6 Management Settings A 6 MANAGEMENT USING QUICK CONFIG MANAGER Installing Quick Config Manager and the Load Balancing Tool B 2 I
8. m The SLIP address for the stack which is 192 168 101 1 by default if managing through the console port m The IP address for the stack if managing over the network For example to access a stack with an IP address of 191 1 1 8 you would enter http 191 1 1 8 When the browser has located the stack a password panel is displayed as shown in Figure 7 1 Enter your user name and password as requested Username and Password Required x Enter username for device at 191 1 1 8 User Name Password Cancel Figure 7 1 Password Panel If no passwords have been configured for the stack the default password for the security level of user is security The user names and passwords are the same as those that you use to access the CLI For a list of the user names and the default passwords refer to Default User Names and Passwords on page 6 3 We recommend that when you have accessed the stack you change the default passwords for the user levels if you have not already done so by logging in as the different user levels If you forget your password while logged out of the stack refer to Solving Problems With the Web Interface on page 8 4 DUA1640 5AAA02 DUA1640 5AAA02 Accessing the Web Interface 7 3 When the correct user name and password have been entered the front page of the web interface may be displayed as shown in Figure 7 2 If this is the first time that the stack has been ac
9. Applying the upgrade will cause a reset to the device which will the become unreachable for a few minutes while the upgrade proceeds Apply Cancel Figure 7 15 Software Upgrade Page The fields are Filename Type the filename of the upgrade file Do not enter a path The file name format is m PS Hub 40 software upgrade pshxx_yy bin m PS Hub 50 software upgrade ps xx_yy bin Where xx_yy is the version of agent software You can specify multiple file names separated by spaces to upgrade PS Hub 40 and PS Hub 50 units in the stack at the same time for example psh02_00 bin psf02_00 bin Server Address Enter the address of the TFTP server that has the software upgrade on it DUA1640 5AAA02 Health Pages 7 25 Health Pages This section describes the fields that appear on the Segment Graph page in the Health category Segment Graph This page shows two graphs for a segment in a unit in the stack The first graph shows information for the last hour the second graph shows information for the last 48 hours as shown in Figure 7 16 gt This page is only available if there is a PS Hub 50 in the stack Utilization of Unit 1 on Segment 1 uniti segment Utilization gt I Erie 0 0 2m 1 Hour 48 Hours Apply Figure 7 16 Segment Graphs Page The fields are Unit Specifies the unit that has the segment Segment Specifies the segment that the graphs are displayed for Graph Type
10. DUA1640 5AAA02 Selecting Your Management Access Method Windows 95 and Windows NT only B 5 Selecting Your Management Access Method Windows 95 and Windows NT only Windows 95 and Windows NT allow you to manage the stack over the network in band using Quick Config Manager To manage the stack over the network the stack must have an IP address and IP must be configured on your management station Refer to the Windows 95 or Windows NT documentation for information on configuring IP for your management station To select the communication method you want Quick Config Manager to use From the File menu select Device Access Quick Config Manager displays the Device Access dialog box as shown in Figure B 1 Device Access xi Device Access Serial C Network CERERI Device Network IP Address 1 Figure B 1 Device Access Dialog Box 2 Select the access method 3 Enter the IP Address of the stack if network access is required Click OK Quick Config Manager performs a Reset View The access method and IP address are stored and used the next time Quick Config Manager is run Quick Config Manager Window Map DUA1640 5AAA02 Figure B 2 over the page shows how all of the Quick Config Manager windows are accessed This diagram also appears on the Quick Reference Guide The numbers at the top right hand side of the windows refer to the pages in this chapter that describe the windows
11. IPX is a registered trademark of Ideographix Inc Netscape Navigator is a trademark of Netscape Communications Corporation Other brand and product names may be registered trademarks or trademarks of their respective holders Environmental Statement It is 3Com s policy to be environmentally friendly in all its operations This manual is printed on paper that comes from sustainable managed European forests The production process for making the pulp has a reduced AOX level adsorbable organic halogen resulting in elemental chlorine free paper The paper is fully bio degradable and recyclable CONTENTS IMPORTANT SAFETY INFORMATION L INFORMATION DE S CURIT IMPORTANTE WICHTIGE SICHERHEITSHINWEISE ABOUT THIS GUIDE Introduction 1 How to Use This Guide 2 Conventions 2 ABOUT THE PS HUB Introduction 1 1 Features 1 2 How You Can Use the PS Hub 1 4 Building Up a Network 1 4 Expanding an Existing Network 1 5 Migrating to Higher Performance 1 6 Workgroups 1 7 What Are Workgroups 1 7 Segments and Port Switching 1 8 Workgroup Example 1 11 How THE PS HUBS DIFFER Overview 2 1 PS Hub 40 2 2 PS Hub 50 2 2 Segment Switch 2 2 PS Hub 50 Transceiver Module Slot 2 6 USING THE PS HUB LEDs and Ports 3 1 Before You Start 3 4 What Other Equipment Is Needed 3 4 Positioning the PS Hub 3 6 Using the Rubber Feet 3 6 Using the Labels 3 7 Rack and Wall Mounting 3 8 Rack Mounting 3 8 Wall Mounting 3 9 Connecting W
12. PS Hub 50 Transceiver Module Slot The PS Hub 50 unit s transceiver module can be fitted with a 3Com 10Mbps or 100Mbps transceiver module The operation of the transceiver module slot differs when using either a 10Mbps or 100Mbps transceiver module m Packets with an unknown destination address are dealt with differently by the segment switch refer to How Does the Segment Switch Work on page 2 3 m The configuration of the transceiver module port is different For information on what transceiver modules you can use refer to Using Transceiver Modules on page 3 12 Using a 10Mbps Transceiver Module When a 10Mbps transceiver module is used the PS Hub 50 allows you to port switch it to any of the hub s four internal segments by default it is switched to segment 1 as shown in Figure 2 3 10Mbps Transceiver Module Figure 2 3 Using a 10Mbps Transceiver Module DUA1640 5AAA02 PS Hub 50 2 7 Using a 100Mbps Transceiver Module When a 100Mbps transceiver module is used the PS Hub 50 automatically connects it to the hub s internal segment switch as shown in Figure 2 4 100Mbps Transceiver Module Figure 2 4 Using a 100Mbps Transceiver Module Using a 100Mbps transceiver module to provide a 100Mbps network connection gives you several options m You can have a fast downlink to a network server or the rest of your network m You can connect a 100Mbps network to your 10Mbps network allowing you
13. be load balanced The segments that can be load balanced have been indicated 3 Segment isolated segment 3 Jo D 000lo These segments can Segment isolated be load balanced together segment 2 JOUE Cascaded segment isolated cascaded segment 4 What the load balancing Logical view feature can see Figure 4 1 Example of Load Balancing DUA1640 5AAA02 Using an External Switch Performing Load Balancing 4 3 2 The load balancing feature notes m Any ports or segments that have been fixed Through management you can fix ports and segments that you do not want load balancing to move m Any ports that are connected to external switches These segments and ports will not be moved by load balancing However traffic generated by these ports and segments will still be considered by the load balancing feature when it works out what other ports it will move The load balancing feature works out how it can configure the segments It attempts to m Have frequently communicating ports on the same segment m Reduce the total traffic utilization across the segments If some benefit will be gained from the new configuration the load balancing feature completes the operation by moving the ports between the segments as required The best way to interconnect the cascaded segments in a stack of PS Hubs is to use a PS Hub 50 However if you want to connect two or more segments using an external switch you mu
14. between the workgroups The workgroups are similar to the structure of your office so it is easy for you to make changes to your network adding and removing users and moving users between workgroups The rest of this section describes how you can build up workgroups using your PS Hub 1 8 CHAPTER 1 ABOUT THE PS HUB Segments and The PS Hub has four separate internal repeaters called segments Port Switching which you can use to create your workgroups You can switch the hub s ports to any of these segments called port switching With the segments and port switching you can easily create your workgroups How the PS Hub Segments Work In a stack of PS Hubs four segments are carried between the hubs by the cascade cables These segments are four separate networks internal to the stack as shown in Figure 1 7 Cascaded Segments 4 3 2 1 Cascade cable Physical view Logical view Figure 1 7 Cascaded Segments Each PS Hub has four internal segments These segments are separate internal repeaters and can connect to or remain isolated from their associated cascaded segments as shown in Figure 1 8 DUA1640 5AAA02 DUA1640 5AAA02 Workgroups 1 9 Cascaded Segments Connected Isolated y Segments Figure 1 8 Internal Segments You use management software to configure the segments You can m Connect and isolate the segments from their associated cascaded segments m Switch the ports between t
15. A 6 For information on connecting another PS Hub to your hub refer to Connecting PS Hubs Together Stacking on page 3 12 Connecting Different Hubs and Stacks To connect different hubs or stacks to your hub you need m One Straight through 10BASE T cable for each unit or stack if using the last port port 12 or 24 and the MDI MDIX switch m One Crossover 10BASE T cable for each unit or stack if using any 10BASE T port other than port 24 For information on connecting a hub or stack to your hub refer to Connecting Different Hubs and Stacks to Your Hub on page 3 16 Connecting Management Equipment For information on what equipment you need to manage the hub refer to Chapter 5 3 6 CHAPTER 3 USING THE PS HUB Positioning the PS Hub When installing your PS Hub ensure that It is accessible and cables can be connected easily It is out of direct sunlight and away from sources of heat Cabling is away from power lines fluorescent lighting fixtures and sources of electrical noise such as radios transmitters and broadband amplifiers Water or moisture cannot enter the case of the unit Air flow around the unit and through the vents in the side of the case is not restricted We recommend you provide a minimum of 25 4mm 1in clearance Free standing hubs are not stacked more than six high and that cables are supported so that they cannot pull the stack over No objects are place
16. Australia 1800 678 515 Netherlands 06 0228049 Belgium 0800 71279 New Zealand 0800 446 398 Denmark 800 17319 Norway 800 11062 Finland 98 001 4444 Portugal 0505 442 607 France 05 90 81 58 Russia Moscow only 956 0815 Germany 0130 81 80 63 Singapore 800 6161 463 Hong Kong 800 933 486 Spain 900 964 445 Italy 1678 99085 Sweden 020 792954 Malaysia 1800 801 777 U K 0800 626403 3ComForum contains patches software drivers and technical articles about all 3Com products as well as a messaging section for peer support To use 3ComForum you need a CompuServe account To use 3ComForum Log on to your CompuServe account Type go threecom Press Return to see the 3ComForum main menu Support from Your Network Supplier DUA1640 5AAA02 If additional assistance is required contact your network supplier Many suppliers are authorized 3Com service partners who are qualified to provide a variety of services including network planning installation hardware maintenance application training and support services When you contact your network supplier for assistance have the following information ready m A list of system hardware and software including revision levels m Diagnostic error messages m Details about recent configuration changes if applicable If you are unable to contact your network supplier see the following section on how to contact 3Com E 4 APPENDIX E TECHNICAL SUPPORT Support from 3Com Regional Sales Of
17. Depth 168 5mm 6 7in Operating temperature 0 50 C 32 122 F Humidity 0 9096 non condensing AC line frequency 50 60 Hz Input voltage 100 240V AC Current rating 1A maximum Table A 2 Weight and Power Consumption 3C16405 3C16406 3C16450 Weight 2Kg 4 4lb 2 1Kg 4 6lb 2 2Kg 4 8lb Power consumption 26W 29W 35W Heat dissipation 90 BTU hr 103 BTU hr 124 BTU hr BABT Approval for U K Users Only The PS Hub is covered by Oftel General Approval NS G 12345 J 100003 for indirect connection to a public telecommunications system This can be achieved using the console port and an approved modem A 2 APPENDIX A DIMENSIONS STANDARDS AND CABLING Standards Table A 3 shows the standards the PS Hub conforms to Table A 3 Standards Functional ISO 8802 3 IEEE 802 3 Safety EN 60950 UL 1950 CSA 22 2 950 EMC emissions EN 55022 Class B FCC Part 15 subpart B Class A ICES 003 Class A VCCI Class 2 AS NZS 3548 Class B EMC immunity EN 50082 1 Environmental EN 60068 IEC 68 Reliability The product meets a minimum calculated MTBF of 60 000 hours using MIL 217 at 25 C 77 F Category 5 screened cables must be used to ensure compliance with the Class B Class 2 requirements of this standard The use of unscreened cables Category 3 or 5 complies with the Class A Class 1 requirements Refer to EMC Statements at the back of this User Guide for conditions of operation DUA1640 5AAA02 Cab
18. Eno BandWidth Figure B 2 Quick Config Manager Window Map DUA1640 5AAA02 Community Polling Lx B 8 QE Cancel Read Write Default Polling LLLA on z 30 gt Bitmap minutes Graph s seconds Invoke zoom view on start up Device Configuration Device Name Emergency Contact Support Contract Floor 1 stack Network Admin 3c4297abc Network Configuration IP Address Subnet Mask Enable IP Quick Config Manager Window Map 1s1 1 1 8 255 255 255 0 F Out Of Band Configuration Serial Line IP Address Subnet Mask 192 168 101 1 255 255 255 0 Cancel Router IP Address Manager IP Address 191 1 1 20 0 0 0 0 Easy Setup B 28 Software Description O1 PS Hub 40 24 Port 4 Segment PS Hub 50 24 Port 4 Segment PS Hub 40 24 Port 4 Segment 2 00 2 00 2 00 Server Information IP Address File Name State of previous update 0 0 0 0 General Info Floor 1 hub El Cateaorv Cateaorv egr Cateaorv Segr Seg Seg Seg Re Re Re Acc Edit Access Levels Edit Access Details Pre manager s Device Password Password Confirmation
19. Filter capture 1 At the top level menu enter system capture 2 Enable or disable RMON Filter capture as required DUA1640 5AAA02 MANAGEMENT USING THE 7 WEB INTERFACE This chapter describes how to use the web interface If you have any problems using the web interface refer to Solving Problems With the Web Interface on page 8 4 Accessing the You can access the web interface for the stack either through the Web Interface console port or over the network Ensure that your management station has been appropriately set up for your particular management method and that any necessary connections have been made refer to Web Interface on page 5 12 If you want to access the web interface through a serial link from a p Windows 95 management station connected to the console port of a hub in the stack you must use the 3Com serial web utility SLIP Driver refer to Appendix C Any number of people can access the web interface over the network at the same time There is a password panel to prevent unauthorized management of the stack To access the web interface 1 Start your web browser 2 In the browser select the option for opening a location CHAPTER 7 MANAGEMENT USING THE WEB INTERFACE 3 In the browser s open location window or area enter the web address URL Uniform Resource Locator for the stack The web address URL for a stack is in the format http nnn nnn nnn nnn Where nnn nnn nnn nnn is
20. In Quick Config Manager displays a zoom view of the stack as shown in Figure B 5 If the zoom view is already open it is selected E Zoom In Floor 1 stack oix Segment 4 switch icon Color coded ports Segment buttons Cascade connection buttons Redundant Power System RPS icon Figure B 5 Zoom View of the Stack In the Community Polling dialog box you can specify whether the zoom view is invoked on starting Quick Config Manager and how often the zoom view is polled updated If you want to update the zoom view immediately without waiting for a poll select Update Zoom from the View menu DUA1640 5AAA02 Port colors Segment Switch DUA1640 5AAA02 icon RPS icon Port Colors and Icons The port color coding shows these conditions m Green Port enabled and capable of repeating traffic to and from the network link present m Red Port enabled but unable to repeat traffic to and from the network link lost or port partitioned m Blue Port disabled by management If you have a PS Hub 50 in the stack its Segment Switch icon is m Blue and white Active m Gray Inactive If a hub is connected to a Redundant Power System RPS an icon is shown on the right of the hub s graphical representation It shows these conditions m Green RPS active and no faults m Red RPS active but has one or more faults Identifying the Ports that are Connected to a S
21. MAC address of the equipment that sent the packet m Destination address the MAC address of the equipment that the packet is intended for The network adapters in your workstations have a MAC address which is used to identify the workstations on the network An example of a MAC address is 08004e0849d1 Using the source addresses the PS Hub 50 unit s segment switch can learn which workstations are connected to each of the cascaded segments This information is stored in a switching database which is a list containing each source address together with the associated cascaded segment Using this database the segment switch can then selectively pass future packets to the relevant cascaded segment When the switch database is full no new addresses are learnt The segment switch regularly removes unused learnt addresses from the switch database known as ageing if they have not been used after 30 minutes the ageing period Using the web interface you can make address entries permanent so that they are not removed by the ageing process The segment switch has the following features m Support for multiple PS Hub 50 units in the same stack m Switch database with a capacity of 500 workstation addresses m Self selecting switch mode a If a 100Mbps transceiver module is fitted the segment switch is in LOI Local Office Interconnect mode The 100Mbps transceiver module port behaves like a downlink port A downlink port is a p
22. MANAGER This appendix describes how to install and use Quick Config Manager For an overview of what you can do when managing the stack refer to Why Manage Your Stack on page 5 2 Quick Config Manager has a comprehensive help system that has the same useful information as this appendix Many of the features in Quick Config Manager are also available using the web interface and they work in a similar way If you want to know how to use a feature that is not documented in this appendix refer to the Quick Config Manager help files To invoke the help files simply select Help from the Quick Config Manager menu bar Quick Config Manager uses a familiar Windows interface with point and click operation To use Quick Config Manager effectively you need to be familiar with Microsoft Windows Refer to the documentation that accompanies Microsoft Windows for more information on how to use the interface Quick Config Manager can only manage one stack at a time Quick Config Manager cannot perform remote monitoring using RMON and remote polling If you have any problems using Quick Config Manager refer to Solving Problems With Quick Config Manager on page B 29 B 2 APPENDIX B MANAGEMENT USING QUICK CONFIG MANAGER What s new There are some new and updated windows and dialog boxes in Quick Config Manager since the previous version 3 00 This is mainly to include the new PS Hub 50 functionality m Zoom View updated
23. NNN ooo Figure B 13 Port Configuration Dialog Box For a Segment 3 Click on a port or on multiple ports while dragging the mouse pointer over the entries or using Ctrl in the list to highlight the port s and then click Fix or Unfix to fix or unfix the port s Click Apply to send the changes to the unit in the stack before closing the dialog box 4 Click Cancel to close the dialog box DUA1640 5AAA02 Performing Load DUA1640 5AAA02 Balancing You can control many areas of the load balancing feature including Invoking the load balancing feature manually m Enabling or disable the automatic load balancing feature m Changing how often the automatic load balancing feature occurs if enabled m Changing the reactive threshold for the load balancing process if this level is exceeded on any segment the load balancing feature is automatically invoked if enabled Load Balancing works by monitoring traffic levels so the stack only starts to benefit fully from it when it has been powered on for an hour and Load Balancing has been enabled for an hour We recommend that you perform load balancing during quiet periods of network activity possibly at night To really benefit from load balancing it is a good idea not to perform load balancing too often A suggested rate is every 24 hours CAUTION The equipment connected to the ports that are moved by load balancing must have their MAC addresses relea
24. PS Hub can be either crossed or uncrossed The MDI MDIX switch affects the port s state m f the switch is IN the port is uncrossed MDI m f the switch is OUT the port is crossed MDIX Figure 3 7 shows a SuperStack Il Hub 10 connected to the PS Hub A Straight through cable is used and one of the SuperStack Il Hub 10 units crossed MDIX ports is connected to port 24 on the PS Hub note that the MDI MDIX switch is IN so the port is uncrossed DUA1640 5AAA02 Powering On the Units 3 17 Switch set to PS Hub SuperStack Il Hub 10 Figure 3 7 Correct Hub Connections Using the Port 24 and the MDI MDIX Switch Powering On the Units When you have connected all of your equipment together you are ready to use your network You can power on the unit or the units in the stack in any order and can make your port connections at any time After powering on the hub its Power Self Test LED flashes for a few seconds while the hub performs its self test Afterwards the LED lights green If it does not refer to Solving Problems With the Hub on page 8 2 Any information that you configure for the unit using management is retained when you power off the unit Spot Checks DUA1640 5AAA02 At frequent intervals visually check that m Case vents are not obstructed m Cabling is secure and not pulled taut If you suspect there is a problem refer to Chapter 8 3 18 CHAPTER 3 US
25. Segment buttons 1 2n R yj m ih Ba a errs hw TSE 24 E Wis Segment Configuration Cascade Switch Ports 4 Console port Figure 7 6 Areas of the Unit View If you click on m The unit but not on a port or button The Unit Status page is redisplayed m 10BASE T or transceiver module port The Port Setup page is displayed for that port m The console port The Console Port Configuration page is displayed m Segment Configuration The Segment Configuration page is displayed m The segment switch or Cascade Switch The Switch Configuration page is displayed only available for a PS Hub 50 If you dick on one of the segment buttons the Unit View highlights the ports with a blue surround that are part of that segment You can make changes to the information on the page click Apply when finished and choose another when ready When you have finished simply choose another management category from the side bar For more information on the Unit View refer to Unit View on page 7 10 DUA1640 5AAA02 User Access Levels Exiting the Web Online Help System and Documentation 7 9 For information on what the different user levels can manage refer to Default User Names and Passwords on page 6 3 You can exit from the web interface at any time by closing your web Interface browser Online Help The CD ROM supplied with the PS Hub has an online help system and System and online documentat
26. Specifies the type of graph that is displayed m Utilization Shows the utilization of the segment as a percentage m Total Errors Shows the amount of packets which have errors DUA1640 5AAA02 7 26 CHAPTER 7 MANAGEMENT USING THE WEB INTERFACE DUA1640 5AAA02 gt PROBLEM SOLVING The PS Hub has been designed to aid you when detecting and solving possible problems with your network These problems are rarely serious the cause is usually a disconnected or damaged cable or incorrect configuration If this chapter does not solve your problem contact your supplier for information on what to do next Perform these actions first m Ensure all equipment is powered on m Power each hub off wait about 5 seconds and then power them on so they perform a self test The self test only takes a few seconds during which the Power Self Test LED flashes If you have a problem using Quick Config Manager refer to Solving Problems With Quick Config Manager on page B 29 If you have a problem with the serial web utility refer to Solving Problems With the Serial Web Utility on page C 4 If you have a problem using the agent upgrade utility refer to Solving Problems With the Agent Upgrade Utility on page D 3 Isolating a Problem A good way of isolating a problem is to see whether it occurs on a particular port only This can be done by m Using a different port to see if the problem still exists m Using managem
27. This is because load balancing tries to keep the stations that frequently communicate with each other on the same cascaded segment 100 Load balancing performed at this point lt j Total traffic 0 T 1 Sun 13 56 01 Mon 14 26 01 Tue 14 56 01 Time Figure B 12 Utilization Before and After Load Balancing Polling You can change the rate at which the Load Balancing Tool updates its utilization information called polling To do this 1 From the Configure menu select Polling The Load Balancing Tool displays the Polling dialog box 2 Use the Enable Polling check box to enable or disable the polling of utilization information If the check box is unchecked polling is disabled and the Poll Period field is disabled 3 Use the Poll Period field to enter how many seconds you want between each poll for information The poll period can be 1 9999 seconds 4 Click OK DUA1640 5AAA02 Fixing and Unfixing Segments and Ports DUA1640 5AAA02 gt You can fix segments and ports so that they are not moved by load balancing m Fixing a segment prevents any ports being moved to or from that segment m Fixing a port prevents that port from being moved to another segment Fixing ports or segments does not prevent you from moving the ports between segments yourself using the web interface or Quick Config Manager It just prevents the load balancing feature from doing it automatically You may want to fix segm
28. Using workgroups m Description and example of the PS Hub segmentation m How the PS Hub works Introduction The SuperStack II PS Hub as shown in Figure 1 1 is a flexible managed Ethernet repeater which is very easy to set up and manage It can be used to build a small network or to expand a larger more established network Figure 1 1 The PS Hub The PS Hub is part of 3Com s SuperStack II PS Hub range which incorporates many of the features from the successful SuperStack Il range SuperStack Il products can be combined to create a network that can change and grow with your networking needs CHAPTER 1 ABOUT THE PS HUB Features gt The PS Hub 40 and PS Hub 50 share many features NOTE These terms and features are described in this chapter and the following chapters m 12 or 24 shielded twisted pair ports for easy connection to 10BASE T networks An MDI MDIX switch allows you to cross over one of these ports for connection to other types of hubs and network equipment m One or two transceiver module slots providing a choice of media options a The PS Hub 40 has two 10Mbps transceiver module slots that can be fitted with 3Com 10Mbps transceiver modules The PS Hub 50 has one transceiver module slot that can be fitted with a 3Com 10Mbps or 100Mbps transceiver module m SuperStack Il architecture You can stack up to 10 hubs six if free standing giving you a possible 260 ports per stack m LEDs for qu
29. Web Management program item in the Serial Web program group The serial web utility opens and asks you if you want to use the URL that has been set up The URL includes the hub s SLIP address For example if the SLIP address for the hub is 192 168 101 1 the URL is http 192 168 101 1 If you want to change the URL click URL If the URL is correct click OK The serial web utility attempts to establish a connection If successful the standard Windows 95 Dial Up Networking dialog box is displayed showing the various connection details Your default web browser is then launched with the specified URL C 4 APPENDIX C SERIAL WEB UTILITY 4 The connection is successful if the web interface s password panel is displayed You are now ready to manage the hub or stack refer to Chapter 7 Solving Problems With the Serial Web Utility If you are unable to connect to the hub s web interface it may be that The hub is not turned on You are not using a proper null modem cable refer to Examples of Null Modem Cables You Can Use on page A 4 The following settings are different on your hub and management station a Flow control Speed baud rate The hub has automatically configured its communication speed but you have subsequently changed the speed configured on your management station the device only automatically configures the speed the first time it connects You have selected the wrong COM port on
30. a port to a different segment use the Port Setup page for that port refer to Port Setup on page 7 13 The Segment Switch The Unit View for a PS Hub 50 shows the segment switch If it is green it is the active segment switch If it is gray it is disabled To configure the segment switch use the Switch Configuration page refer to Switch Configuration on page 7 16 DUA1640 5AAA02 Unit Status DUA1640 5AAA02 Unit Pages 7 11 This page provides detailed information about the unit Unit Name The name configured for the stack Location Where the stack is located Contact The person to contact if there is a problem with the stack The Unit Name can be configured using the System Name page in the Management Settings category refer to System Name on page 7 19 The Location and Contact can be configured using Quick Config Manager or an SNMP network management application Unit Description The units product name Hardware Rev The version of hardware inside the unit MAC Address The unit s MAC Ethernet address Software Version The version of management software that the unit is running Boot PROM Version The version of software on the Boot PROM inside the unit Unit Uptime The time that has elapsed since the unit was last reset initialized or powered on Unit Attention Light A checkbox for you to light the Attn LED to help identify the unit in the stack To display the Management Addresses page click I
31. above limitations and exclusions may be limited in their application to you This warranty gives you specific legal rights which may vary depending on local law GOVERNING LAW This Limited Warranty shall be governed by the laws of the state of California 3Com Corporation 5400 Bayfront Plaza Santa Clara CA 95052 8145 U S A Tel 408 764 5000 9 1 96 EMC STATEMENTS FCC STATEMENT This equipment has been tested and found to comply with the limits for a Class A digital device pursuant to part 15 of the FCC rules These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instructions may cause harmful interference to radio communications Operation of this equipment in a residential area is likely to cause harmful interference to radio communications in which case the user will be required to correct the interference at their own expense CSA STATEMENT This Class A digital apparatus meets all requirements of the Canadian Interference Causing Equipment Regulations Cet appareil num rique de la classe A respecte toutes les exigences du Reglement sur le mat riel brouilleur du Canada VCCI STATEMENT CORB SERRER E Ei i ZOR L Aiba NTH ASHSZSSPROBRE CHES RCORRMSHLE ANE LARUE ZESERBSSERHRBAIVCC BEKBALT
32. become part of Accounts U and V to segment 2 Figure 1 11 shows the workgroups after the changes have been made Figure 1 11 Workgroup Example After Changes Port switching is independent of the physical connections so it can be made quickly and easily through either local or remote management DUA1640 5AAA02 1 14 CHAPTER 1 ABOUT THE PS HUB If one of the PS Hubs in the example is a PS Hub 50 you can enable communication between the four cascaded segments in the stack so that your workstations can communicate across the segments For information on the PS Hub 50 refer to PS Hub 50 on page 2 2 For information on the segment switch in the PS Hub 50 refer to Segment Switch on page 2 2 For information on load balancing refer to Chapter 4 DUA1640 5AAA02 How THE PS HUBS DIFFER This chapter contains the following topics m An overview of the differences between the PS Hub 40 and PS Hub 50 m How the PS Hub 50 segment switch and transceiver module slot work Overview This chapter describes how the PS Hub 40 and PS Hub 50 are different However they are both part of the PS Hub family and have many similar features For information on these common features refer to Features on page 1 2 Table 2 1 shows a summary of the differences between the PS Hubs Table 2 1 Differences Between the PS Hubs Features PS Hub 40 PS Hub 50 Has the hub got an internal segment switch No Yes Number a
33. communication in a NetWare network Local Area Network A network of connected computing resources for example workstations printers servers covering a relatively small geographic area usually not larger than a floor or building Characterized by high data rates and low error rates An address in the switch database that has been learnt stored by the segment switch Unused learnt addresses are removed from the switch database by the ageing process See baud rate The process of configuring the segments in a stack of hubs so that utilization is balanced across all the segments in the stack This produces more efficient segments by distributing traffic evenly LOI mode main port MIB multicast permanent address protocol resilience resilient link RJ45 RMON RPS Local Office Interconnect One of the segment switch s operating modes Refers to the process of forwarding all packets with unknown addresses to the 100Mbps port the 100Mbps transceiver module The port in a resilient link that carries data traffic in normal operating conditions Management Information Base Stores a devices management characteristics and parameters MIBs are used by Simple Network Management Protocol SNMP to contain attributes of their managed systems The PS Hub contains its own internal MIB Single packets copied to a specific subset of network addresses These addresses are specified in the destination address field o
34. connect workstations to the hub using the 10BASE T RJ45 ports WARNING Ensure you have read the Important Safety Information section carefully before you start ACHTUNG Versichern Sie sich daB Sie den Abschnitt mit den wichtigen Sicherheitshinweisen gelesen haben bevor Sie das Ger t benutzen AVERTISSEMENT Assurer que vous avez lu soigneusement la section de L information de S curit Importante avant que vous commenciez CAUTION Always wait about 5 seconds between powering off and powering on the hub to ensure that the hub performs a full reset Connecting workstations to your hub is easy Connect them using 10BASE T cables to any of the hub s 10BASE T RJ45 ports To connect a 10BASE T cable simply slot the connector into the relevant RJ45 port When the connector is fully in its latch locks it in place To disconnect the cable push the connector latch in and remove it The hub detects all port connections so you can start using your network immediately When you need more ports simply add more PS Hubs In order to comply with the 10BASE T standard ports designed for workstation connections have been marked with the graphical symbol x This denotes a crossover in the port s internal wiring for example 1x 2x 3x If you are using the last port port 12 or 24 to connect a workstation ensure the MDI MDIX switch is set to MDIX 3 12 CHAPTER 3 USING THE PS HUB Using Transceiver Modules A p p
35. few hours This page is used to reset the stack Resetting the stack simulates powering on and powering off the stack You may want to do this if you want to reset the stack s statistics counters CAUTION Performing a reset may cause some of the data being transmitted over the network to be lost It also clears the non permanent addresses in the PS Hub 50 unit s switch database DUA1640 5AAA02 Resilient Links DUA1640 5AAA02 gt Configuration Pages 7 21 This page shows the resilient links that have been set up for the stack as shown in Figure 7 14 This page is only available if there is a PS Hub 50 in the stack Only 10BASE T and fiber optic ports if there are fiber optic transceiver modules fitted to hubs in the stack can be part of a resilient link However you can have Fast Ethernet Resilience in your stack with multiple PS Hub 50 units For more information refer to Fast Ethernet Resilience on page 2 5 Resilient Links Main Link Standby Link Pair State Unit 1 Port 4 OK Unit 1 Port20 OK Operational Unit 1 Port 14 Failed Unit 1 Pot19 0K Operational een End of List Add Delete Swap Figure 7 14 Resilient Links Page The fields are Main Link Shows the hub and port number of the main link and the state of the link Standby Link Shows the hub and port number of the standby link and the state of the link Pair State Shows whether the resilient link pair is ope
36. files on your management station it asks you to insert you Windows 95 CD ROM If it still cannot find the files you must obtain them directly from Microsoft Contact Microsoft for more information When the installation program has ensured all the relevant files are installed it asks you to select the COM port This is the serial port on your management station that you are going to use when connecting to the hub s console port If you click Advanced the Advanced Configuration Parameters dialog box is displayed showing all of the settings the serial web utility will use when it is run These default settings are already correct for connection to the hub so you should not need to change them The fields are Connection name Allows you to enter a name for the connection Modem name Allows you to enter a name for the modem connection PC SLIP Address The SLIP address that is to be allocated to the management station The default address is 192 168 101 2 Device URL The URL that the serial web utility uses to access the hub which includes the hub s SLIP address For example the default SLIP address for the hub is 192 168 101 1 so the URL is http 192 168 101 1 Flow Control None XON XOFF Hardware RTS CTS Allows you to specify the flow control that the management station is to use Data bits Stop bits and Parity are all fixed Speed 1200 2400 4800 9600 19200 Allows you to specify the baud rate that the mana
37. graphs 7 25 B 21 grouping users 1 8 growth flexible 1 5 H Health pages 7 25 help CLI 6 5 Quick Config Manager B 1 web interface 7 17 holes ventilation 3 10 3 17 Hot Swap Cascade Units 3 13 hot swap functionality 3 13 how hub segments work 1 8 load balancing works 4 2 PS Hub 50 transceiver module ports work 2 6 PS Hubs differ 2 1 how the segment switch works 2 3 how to use hub 1 4 LEDs and ports 3 2 hub accessing B 8 connecting another PS Hub 3 12 connecting equipment 3 11 connections 3 5 double clicking B 14 features 1 2 general information 1 1 graphical representation B 12 how you can use it 1 4 installing 3 6 IP address B 9 LEDs 3 1 load balancing 4 1 MAC address 3 7 management methods 5 5 managing 5 2 numbers 3 7 ports 3 1 positioning 3 6 powering on 3 17 problems 8 2 siting 3 6 upgrading B 28 using 3 1 wall mounting 3 8 what items the hub comes with 3 4 HyperTerminal application 5 9 5 11 I identifying switched ports B 13 which ports are on a segment 7 10 inactivity 5 11 in band management 5 5 increasing the number of user connections 1 5 information recycled ii infrastructure 1 10 initial access 6 2 initialize 6 11 Initialize page 7 20 installing hub 3 6 Load Balancing Tool B 2 Quick Config Manager B 2 using serial web utility C 1 internal segment switch 2 2 segments 1 8 InterNIC 5 7 IP B 9 IP address 5 7 7 12 obtaining 5 7 IP information 7 12 configuring 6 8 disp
38. in text and press the Return or Enter key Example To exit enter the following command Logout This guide always gives the full form of a command in uppercase and lowercase letters However you can abbreviate commands by entering only the uppercase letters and the appropriate value Commands are not case sensitive Screen displays This typeface represents information as it appears on the screen The words enter When you see the word enter in this guide you must and type type something and then press the Return or Enter key Do not press the Return or Enter key when an instruction simply says type Key names Key names appear in text in one of two ways m Referred to by their labels such as the Return key or the Escape key Written with brackets such as Return or Esc If you must press two or more keys simultaneously the key names are linked with a plus sign Example Press Ctrl Alt Del Menu commands and buttons Menu commands or button names appear in italics Example From the Configure menu select Community Polling Words in italicized type Italics emphasize a point or denote new terms at the place where they are defined in the text Words in bold type Bold text denotes key features ABOUT THE PS HUB This chapter contains the following topics m Features and benefits of the PS Hub m How the PS Hub can be used m
39. modem set your modem to 8 data bits no parity and 1 stop bit Call the telephone number nearest you Country Data Rate Telephone Number Australia up to 14400 bps 61 2 9955 2073 Brazil up to 14400 bps 55 11 547 9666 France up to 14400 bps 33 1 6986 6954 Germany up to 28800 bps 4989 62732 188 Hong Kong up to 14400 bps 852 2537 5608 Italy fee required up to 14400 bps 39 2 27300680 Japan up to 14400 bps 81 3 3345 7266 Mexico up to 28800 bps 52 5 520 7853 P R of China up to 14400 bps 86 10 684 92351 Singapore up to 14400 bps 65 534 5693 Taiwan up to 14400 bps 886 2 377 5840 UK up to 28800 bps 44 1442 438278 U S A up to 28800 bps 1 408 980 8204 Access by Digital Modem ISDN users can dial in to 3ComBBS using a digital modem for fast access up to 56 Kbps To access 3ComBBS using ISDN use the following number 408 654 2703 3Com Corporation s interactive fax service 3ComFacts provides data sheets technical articles diagrams and troubleshooting instructions on 3Com products 24 hours a day 7 days a week Call 3ComFacts using your Touch Tone telephone using one of these international access numbers Country Telephone Number Hong Kong 852 2537 5610 U K 44 1442 438279 U S A 1 408 727 7021 DUA1640 5AAA02 3ComForum on CompuServe Online Service Support from Your Network Supplier E 3 Local access numbers are available within the following countries Telephone Telephone Country Number Country Number
40. network An easy way to check this is that if you have access to the Internet and can download web pages from it your management station has already got an IP stack For fully operational management your web browser must support m Java m Frames m HTML 3 2 Suitable web browsers are Netscape Navigator Version 3 0 or Microsoft Internet Explorer Version 3 0 Configuring Your Browser Before you use your web browser to access the web interface you must make one small configuration change to it so that it always downloads the latest version of a page DUA1640 5AAA02 To do this for Netscape Navigator Start Netscape Navigator From the Options menu select Network Preferences The preferences dialog box appears 3 Check the Every Time checkbox Click OK To do this for Microsoft Internet Explorer Start Microsoft Internet Explorer From the View menu select Options The Options dialog box appears Select the Advanced tab and in the Advanced property sheet click Settings Check the Every visit to the page checkbox 5 Click OK Quick Config Manager Through the Console DUA1640 5AAA02 Port You can manage the PS Hub using Quick Config Manager You can manage the hub m Through the console port m Over the network Windows 95 and Windows NT version 4 or later only You can perform similar management functions using Quick Config Manager as you can using the web interface You
41. of hubs stacks and networking equipment as shown in Figure 1 3 DUA1640 5AAA02 Expanding an Existing Network DUA1640 5AAA02 How You Can Use the PS Hub 1 5 Stack of Stack of PS Hubs PS Hubs Chassis Figure 1 3 Connecting to Other Stacks and Hubs You can add PS Hubs to your existing network to expand the number of user connections Each PS Hub has its own built in management which is distributed throughout the PS Hubs in the stack This provides fault tolerance because there is no single point of failure all hubs have management capability should they become isolated Figure 1 4 shows how PS Hubs can be added to an existing network the network is a stack of SuperStack Il Hub 10 units in this example The hubs create more ports now and allow for further growth in the future The PS Hubs are connected to a switch so that communication between them is controlled SuperStack Il Hub 10 stack 10 Mbps Stack of PS Hubs CoreBuilder Switching Hub Figure 1 4 Expanding an Existing Network 1 6 CHAPTER 1 ABOUT THE PS HUB Migrating to Higher The PS Hub is ideal for migrating your existing network to a higher Performance performance network Using its internal segments each running at 10Mbps you can build up separate workgroups within a PS Hub stack Having a PS Hub 50 in your PS Hub stack can extend the flexibility of your stack m The PS Hub 50 has an internal switch called a se
42. port m 3C16406 PS Hub 40 24 port m 3C16450 PS Hub 50 24 port This guide is intended for users who have networking experience If you have used 3Com s SuperStack Il range of products you may already be familiar with using this kind of hub We recommend that you read through this guide as the PS Hub has a number of important features which are described in this guide If you are familiar with the PS Hub and know how the PS Hub s port switching and segments work you may only want to know how the PS Hub 40 and PS Hub 50 are different refer to Chapter 2 When referring to both the PS Hub 40 and PS Hub 50 generally this guide uses the term PS Hub For information on the Limited Warranty refer to the 3Com Corporation Limited Warranty at the back of this guide A Quick Reference Guide accompanies this user guide and provides a summary of some of the information in this user guide If there are Release Notes shipped with your product and the information in them differs from the information in this guide follow the Release Notes How to Use This table shows where to find specific information in this guide This Guide If you are looking for Turn to An introduction to the hub workgrouping and segments Chapter 1 Information on how the PS Hub 40 and PS Hub 50 are different Chapter 2 from each other Information on installing and using the hub Chapter 3 An introduction to load balancing and how it works C
43. press Return if it s not needed Finally you are prompted for a SLIP subnet mask Enter SLIP subnet mask 255 255 255 0 Enter a SLIP subnet mask or press Return if it s not needed DUA1640 5AAA02 Viewing the Configuration DUA1640 5AAA02 Commands 6 9 You can use the display command to show current configuration information for your hub or stack Displaying the Hub Configuration At the top level menu enter system display The CLI displays information similar to this example 3Com PS Hub 50 3C16450 Unit Name Marketing Location Top floor Contact James Time since reset 2 days 3 hours 10 minutes Operational Version 1 00 Boot Version 1 00 Hardware Version 1 00 Serial Number 2103332 This information is in the hub s MIB Management Information Base and is read only You can change the Unit name Location and Contact using the web interface If a problem occurs and you need advice from your support representative you may be asked for some of the information shown on this screen Displaying the IP Configuration At the top level menu enter ip interface display The CLI displays the IP address subnet mask default router address SLIP address and SLIP subnet mask for the hub 6 10 CHAPTER 6 USING THE COMMAND LINE INTERFACE Resetting the Stack A Displaying the Stack Configuration The inventory commands allows you to list the units in the stack At the top level menu enter system
44. required m Checkboxes Show whether options are enabled checked or disabled unchecked Click on the checkboxes to change them m Action buttons Affect the information in the fields and checkboxes for that page m Page links Link to other pages of information within the same management category Figure 7 4 shows how the pages in the web interface are linked The page number under each box is where the description is in this chapter Unit Select a unit in the stack icon 1 6 7 12 je m EB gt ae LE EEE EEE NDS Q m i Segment Configuration Cascade Switch 7 10 Unit Segment Port Switch Console Port Status Configuration Setup Configuration Configuration 7 11 7 15 7 13 7 16 7 14 Management Permanent Addresses Address 7 12 7 16 Add an Address 7 16 Management Settings Document Getting Password System ation Started Setting Name 7 17 7 18 7 19 7 19 Configuration Initialize Load Reset Software Resilient Balancing Upgrade Links 7 20 7 20 7 20 7 24 JE Add Resilient Health Link 5 7523 a Only available ifthere is a rapns PS Hub 50 in the stack T25 Figure 7 4 Web Interface Map DUA1640 5AAA02 Using the Web Interface 7 7 Using the Web Interface DUA1640 5AAA02 To display management category
45. the stack over If installing the PS Hub in a stack of mixed SuperStack Il units the PS Hub must be installed above the deeper units For conformance with Ethernet rules you can only have four repeaters in series For a stack of more than one PS Hub any path through the Stack counts as going through two logical repeaters DUA1640 5AAA02 About Cascade DUA1640 5AAA02 Cables gt Cascade cables are used to connect the PS Hubs to form a stack These cables carry the stack s cascaded segments and distributed management information the stack will not work with any other cables Cascade cables are available from your supplier and come in a variety of lengths refer to Cascade Connections on page A 6 You can use a maximum of 6m 19 6ft of cascade cabling between the top and bottom hubs in the stack Stack Resilience and Hot Swap Functionality Cascade cables have built in resilience and hot swap functionality m Up to three units within the stack can be powered off without affecting the operation of the other units in the stack m The units within a stack automatically reconfigure when a unit is added or removed from the stack However if a cascade cable is disconnected the stack splits into two isolated stacks The units within the stack s automatically reconfigure when a cascade cable is connected or disconnected Hot Swap Cascade Units You can increase the resilience of the stack by using 3Com Hot Swap Ca
46. themselves The process for detecting and reconfiguring is as follows If one hub has a 100Mbps transceiver module fitted that hub becomes the active switch If more than one hub has a 100Mbps transceiver module fitted but only one has a link is receiving information through its transceiver module port that hub becomes the active switch If all PS Hub 50 units appear to be equal the hub with the lowest unit number the one nearest the bottom of the stack if connected correctly becomes the active switch Only the active switch learns addresses and adds them to its switch database DUA1640 5AAA02 DUA1640 5AAA02 PS Hub 50 2 5 Fast Ethernet Resilience The process that chooses the active switch when there are multiple PS Hub 50 units in a stack enables you to have a Fast Ethernet resilient link in your stack Figure 2 2 shows a stack of two PS Hub 50 units both with 100Mbps transceiver modules Both transceiver modules have a connection and appear to be equal so the bottom unit s segment is the active segment switch and that transceiver module is used If the connection to the bottom unit s transceiver module fails the stack reconfigures so that the top unit s segment switch becomes the active segment switch BEFORE AFTER Bottom hub active Connection fails Top hub active 9 ae y Connection lt a fails O Zu gt Figure 2 2 Fast Ethernet Resilience 2 6 CHAPTER 2 HOW THE PS HUBS DIFFER
47. to migrate to a faster network in the future With multiple PS Hub 50 units you can have a Fast Ethernet resilient link in your stack refer to Fast Ethernet Resilience on page 2 5 DUA1640 5AAA02 2 8 CHAPTER 2 How THE PS HUBS DIFFER DUA1640 5AAA02 USING THE PS HUB This chapter contains the following topics m Description of the hub s LEDs and ports m Positioning the hub m Rack and wall mounting the hub m Connecting PS Hubs together m Connecting workstations and other equipment to the hub m Spot Checks LEDs and Ports Figure 3 1 over the page shows the hub s diagnostic LEDs and easy to use ports This diagram also appears on the Quick Reference Guide The LEDs m Show you how the hub and its ports are operating m Show you how the hub s segments are operating m Alert you to a potential problem with your network The different types of ports are used for m Connecting workstations and other equipment to your hub m Connecting your hub to other PS Hubs to form a stack m Connecting a management station to your hub for local management CAUTION Only connect a SuperStack Il Redundant Power System to the Redundant Power System socket Do not remove the transceiver module blanking plate with the power still connected CHAPTER 3 USING THE PS HUB gt 12 or 24 10BASE T RJ45 ports equipment that has a 10BASE T port stack gt MDI MDIX switch Use 10BASE T cable with RJ45 connectors You c
48. up then enter the password The prompt changes to show Enter new password Enter your new password The prompt asks you to confirm your new password by entering it again The CLI displays a message to tell you that your password has successfully changed CHAPTER 6 USING THE COMMAND LINE INTERFACE Setting the IP Configuration gt Before you can manage the hub over the network you must assign it an IP address and subnet mask You may also need to enter a default router sometimes known as the default gateway address The default router is the router if you have one which is used by the stack to communicate with other networks For serial management you may need to configure the SLIP address and SLIP subnet mask If you have no previous knowledge of IP refer to IP Addresses on page 5 7 If you change any of these values you may need to re access the hub using the new values To enter new IP settings At the top level menu enter ip interface define You are prompted for the hub s IP address Enter IP address 0 0 0 0 Enter a valid IP address for the Hub You are prompted for the hub s subnet mask Enter subnet mask 255 255 255 0 Enter a subnet mask You are prompted for a default router address Enter default gateway 0 0 0 0 Enter a default gateway address or press Return if it s not needed You are prompted for a SLIP address Enter SLIP address 192 168 101 1 Enter a SLIP address or
49. your management station To change some of the settings for the management station use the Advanced Configuration Parameters dialog box To display this select the Serial Web Setup program item in the Serial Web program group DUA1640 5AAA02 AGENT UPGRADE UTILITY The CD ROM supplied with the hub has an agent upgrade utility on it that can be used for upgrading the new version of agent software to the PS Hub NOTE You would only use this utility if a previous software upgrade has failed and you are unable to communicate with your hubs using the web interface or Quick Config Manager At all other times you should use the web interface or Quick Config Manager to upgrade your hubs If you have any problems using the agent upgrade utility refer to Solving Problems With the Agent Upgrade Utility on page D 3 Using the Upgrade Utility gt The upgrade utility works from an MS DOS prompt It upgrades one hub at a time Upgrading a hub may take up to 5 minutes To upgrade agent software to a hub Connect your PC s serial COM port to the hub s console port using a null modem cable If you are using Microsoft Windows exit out of it so that you are at the MS DOS prompt This utility must be run from MS DOS It cannot be used from an MS DOS Window within Microsoft Windows At the MS DOS prompt change your directory to the drive that is your CD ROM drive D 2 APPENDIX D AGENT UPGRADE UTILITY 4 Enter t
50. 1 Seg 1 Seg2 Power Self test 13 14 15 16 17 18 19 20 21 22 23 24 Tcvr2 Seg3 Seg4 Attn SuperStack PS Hub 40 Console 9600 8 1 N UP oWo OU TI DOWN Console port Used to connect your management station to the hub for local management For information on making a management connection refer to Chapter 5 DUA1640 5AAA02 Cascade ports Used for connecting the hub to other PS Hubs to create a stack Start with the bottom hub and use cascade cables to connect the UP port on each hub to the DOWN port on the hub directly above it For more information on using these ports refer to Connecting PS Hubs Together Stacking on page 3 12 3 4 CHAPTER 3 USING THE PS HUB Before You Start What Other Equipment Is Needed Your PS Hub comes with m One power cord for use with the PS Hub m Four standard height and two reduced height self adhesive rubber feet a Two mounting brackets and four screws m Four self adhesive labels m One CD ROM featuring The 3Com serial web utility SLIP driver for Windows 95 An agent upgrade utility Transcend Quick Configuration Manager for Windows Transcend Load Balancing Tool a Online help a Online versions of this user guide m A Warranty Registration card for you to fill out and return m A Quick Reference Guide You may need to get some cables and oth
51. 19 network 1 8 address 5 7 building 1 4 expanding 1 6 growth 1 4 infrastructure 1 10 management 5 1 mask 7 12 supplier support E 3 network management station connecting 5 5 settings A 6 new features 1 2 null modem cable A 4 number 3 7 unit 5 1 user connections increasing 1 5 0 obtaining an IP address 5 7 online help B 1 help system and documentation 7 9 7 17 technical services E 1 operating environment A 1 order numbers cables A 6 other hubs connecting 3 16 other stacks and hubs 1 6 out of band management 5 5 overview 1 1 P page components 7 6 panel Segment Configuration B 15 Switch Configuration B 17 parity 5 8 part number of the hub 3 7 partition state 7 13 parts of the web interface 7 4 password 6 2 7 2 changing 6 7 default 6 3 Password Setting page 7 19 performing load balancing B 25 Permanent Address Management page 7 16 permanent addresses 2 3 pin numbering A 3 polling B 22 port 3 1 colors 7 10 B 13 connections 3 11 console A 6 B 27 ixing and unfixing B 24 state 3 16 7 13 status 7 10 ransceiver module 3 12 Port Setup page 7 13 port switching 1 4 1 8 example 1 11 positioning your hub 3 6 power socket 3 2 Power System socket 3 1 3 2 Power Self Test LED 3 2 8 1 powering on your equipment 3 17 problem solving 8 1 problems using Command Line Interface 8 3 using IP IPX based network management application 8 5 using Quick Config Manager B 29 using serial web utili
52. 27 character size 5 8 checking 3 17 CLI 5 3 5 8 6 1 commands 6 7 colors ports 7 10 B 13 COM port of the management station B 4 Command Line Interface 5 3 5 8 6 1 problems 8 3 commands entering 6 5 community string B 8 Community Polling dialog box B 8 components of the web interface 7 4 CompuServe E 3 Configuration pages 7 20 configuration displaying 6 9 Configure menu Community Polling B 8 General Info B 15 B 17 IP Setup B 10 Load Balance B 18 Upgrade B 28 configuring console port 7 14 B 27 IP 6 8 7 12 B 9 load balancing B 18 multiple stacks B 4 resilient links 7 21 7 22 segment switch 7 16 B 17 segments 1 8 7 15 B 14 conformance standards A 2 congestion avoiding 1 10 connecting 10BASE T cable 3 11 different hubs 3 16 different hubs switches and stacks 3 5 hubs together 3 12 management station 5 5 segment switch 7 16 segments 7 15 B 14 stacks 3 16 workstations 3 11 connection lost 5 11 connections 3 4 console port 3 2 5 8 5 13 A 6 cables A 4 configuring B 27 Console Port Configuration page 7 14 contents of the box 3 4 controlling the CLI 6 5 conventions notice icons About This Guide 2 text About This Guide 3 correcting faults 8 1 creating flexible workgroups 1 9 crossover 10BASE T cable 3 5 A 3 current utilization B 20 D data bits 5 8 default setting for segment switch 2 4 SLIP address 5 7 user names and passwords 6 3 default router 6 8 7 12 defaults returning to 6 11 7 20 D
53. AC Address 34 02 12 fd 04 02 12 fd 04 55 f8 08 02 12 fd 04 34 fb 06 nu Add Delete Figure 7 11 Permanent Address Management Page The fields are MAC Address The MAC address of the device Segment The cascaded segment to which the device is connected Adding and Deleting Permanent Addresses To add a permanent address to the switch database click Add The Add a Permanent Address page is displayed Enter the MAC address of the device and the cascaded segment to which the device is connected and then click Add Address to Switch Port To delete a permanent address from the switch database click on the entry in the list and then click Delete The permanent address is made non permanent Non permanent addresses are removed from the segment database known as ageing if they are not used DUA1640 5AAA02 Management Settings Pages Documentation gt DUA1640 5AAA02 This section describes the fields that appear on the pages in the Management Settings category The first page displayed is the Documentation page This page specifies the directories or URLs that are used to access the online help system and documentation as shown in Figure 7 12 For more information on how to set up the online help system and online documentation refer to Online Help System and Documentation on page 7 9 Documentation If you have access to on line documentation please select and enter the path name below H
54. Depending on your hub the PS Hub has one or two transceiver module slots providing a choice of media options PS Hub 40 The PS Hub 40 has two 10Mbps transceiver module slots that can be fitted with 3Com 10Mbps transceiver modules CAUTION The only transceiver modules that can be used in the PS Hub 40 units transceiver module slots are 3Com 10Mbps transceiver modules You cannot use two AUI Transceiver Modules or Bridge MicroModules at the same time PS Hub 50 The PS Hub 50 has one transceiver module slot that can be fitted with a 3Com 10Mbps or 100Mbps transceiver module You cannot use an AUI Transceiver Module or Bridge MicroModule The operation of the transceiver module in the PS Hub 50 is determined by the type of transceiver module you use refer to PS Hub 50 Transceiver Module Slot on page 2 6 Connecting PS Hubs Together Stacking You can increase the number of ports in your network by connecting additional PS Hub 40 and PS Hub 50 units to your hub to form a stack this process is called stacking The four cascaded segments are carried through the stack enabling you to switch the ports on all of the hubs between the four segments You can stack up to 10 units if they are rack mounted or six units if they are free standing CAUTION Do not have a free standing stack of more than six hubs When you connect workstations and other equipment to the stack ensure that all cables are supported and cannot pull
55. ERFACE Accessing the CLI Initial Access gt Logging On By default the hub automatically configures the baud rate of its console port to operate with the connected management station or terminal provided the parity stop bits and character size are identical to the connected management station or terminal You may need to perform the wake up procedure to initiate the communication To do this press Return several times at the management station or terminal The login sequence for the CLI begins as soon as the hub detects a connection to its console port or as soon as a Telnet session is started The login prompt Login Is displayed As the initial user enter the default user name admin and press Return at the password prompt The first time you access the CLI the password is null We recommend that when you have accessed the stack you change the default passwords for the user levels if you have not already done so by logging in as the different user levels At subsequent logins enter your user name If the user name is valid the Password prompt appears You must enter your password correctly before you can continue with your management session If you have logged on correctly the initial menu appears If you have not logged on correctly the message Incorrect password appears and the login sequence starts again DUA1640 5AAA02 Logging Off DUA1640 5AAA02 Accessing the CLI 6 3 Default User Nam
56. HV ET LBLARBEFSUAFLLEYUSVSERCERLTIR KR SE R EBEFORRERBSIENBUET RRA BIH OTELURU RUE LORE INFORMATION TO THE USER If this equipment does cause interference to radio or television reception which can be determined by turning the equipment off and on the user is encouraged to try to correct the interference by one or more of the following measures Reorient the receiving antenna Relocate the equipment with respect to the receiver Move the equipment away from the receiver Plug the equipment into a different outlet so that equipment and receiver are on different branch circuits If necessary the user should consult the dealer or an experienced radio television technician for additional suggestions The user may find the following booklet prepared by the Federal Communications Commission helpful How to Identify and Resolve Radio TV Interference Problems This booklet is available from the U S Government Printing Office Washington DC 20402 Stock No 004 000 00345 4 In order to meet FCC emissions limits this equipment must be used only with cables which comply with IEEE 802 3
57. ING THE PS HUB DUA1640 5AAA02 LOAD BALANCING This chapter contains the following topics m An overview of load balancing m How load balancing works Overview gt The PS Hub has a very useful feature called load balancing which can be used to configure segments in a stack of PS Hubs The aim of load balancing is to increase total throughput across the segments in a stack providing more efficient segments As load balancing configures segments in a stack you cannot perform workgrouping at the same time In effect the segments participating in load balancing are a single high capacity workgroup For load balancing to work properly there must be either m A PS Hub 50 in the stack m A switch connected to the hubs in the stack 4 2 CHAPTER 4 LOAD BALANCING How Does Load Balancing Work The load balancing feature monitors the traffic levels in the stack At regular intervals or when it reaches a predefined traffic level whichever you have configured the stack starts load balancing Here are the steps it performs The PS Hubs work out which internal segments and cascaded segments are connected by a switch either through the PS Hub 50 unit segment switch or an external switch It does this because the load balancing feature will only move ports between segments that they currently communicate with so that no workstations become isolated Figure 4 1 shows an example of a stack with a PS Hub 50 that is to
58. If you have previously configured address information for the hub but want to go through the Easy Set Up option again you can start it by clicking on the Easy Set Up button m If no previous IP information has been configured for the hub or the IP address is configured as 0 0 0 0 and the Enable IP box is checked the Easy Setup option is started If you want to enter information directly into the IP Setup dialog box or abort the Easy Setup process select Abort The Easy Setup option asks you if you want to manually configure the hub for IP If you have a BOOTP server that automatically allocates IP addresses select No otherwise select Yes IP Setup Device Configuration Network Configuration Emergency Network Admin Subnet Contact Mask puppet 3c4297abc EnablelP M Out Of Band Configuration Serial Line Router IP IP Address 19216910171 Address Subnet 255 255 255 0 Manager IP Mask Address 2000 Cancel Easy Setup Figure B 4 IP Setup Dialog Box DUA1640 5AAA02 DUA1640 5AAA02 2 Enter the relevant information into the IP Setup dialog box or Easy Setup dialog boxes and click OK to exit the dialog boxes 3 Reset the hub for any changes to take effect gt After resetting the hub you may need to select Reset View from the File menu to restart communication using the new information CAUTION Always make a note of any changes that you make to the settings on this
59. NT USING QUICK CONFIG MANAGER Running Quick Config Manager A Whenever you want to start the Quick Config Manager application double click on the Quick Configuration Manager icon CAUTION Do not run Quick Config Manager in parallel with any other Transcend management application Before you can manage the stack you must make a management connection to the stack If you are going to manage over a serial link from your management station Quick Config Manager uses COM1 as the default serial port You can change this by editing the following line under the slip subsection of the QUICKMGR INI file SerialAttrib COM1 9600 n 8 1 Editing it to SerialAttrib COM2 9600 n 8 1 changes the default serial port to COM2 Before Managing with Quick Config Manager you must ensure that your management equipment and the hub have been set up refer to Quick Config Manager on page 5 13 Configuring Multiple Stacks There is a special feature which enables you to refresh your management communication when connecting your management station to different stacks This means that you do not need to close and re open Quick Config Manager which is particularly useful if you have many separate stacks that need configuring or monitoring To do this Make your serial connection to the new stack From the File menu select Reset View Quick Config Manager closes any windows that are open in preparation for the new management session
60. P Setup at the bottom of the Unit Status page 7 12 CHAPTER 7 MANAGEMENT USING THE WEB INTERFACE Management Address gt This page specifies a unique IP address for the stack as shown in Figure 7 8 If you have no previous knowledge of IR refer to IP Addresses on page 5 7 If you change any of these values you may need to re access the hub using the new values Management Addresses Please enter a unique IP address for the device IP Address Enter a suitable network mask Network Mask fo If a default router exists on your network type in the IP address below Default Router BOOTP Off On Apply Figure 7 8 Management Address Page The fields are IP Address Provides a box for you to type the IP address of the stack Network Mask Provides a box for you to type the subnet mask for the IP address Default Router Provides a box for you to type the IP address of the default router if you have one which is used by the stack to communicate with other networks BOOTP Disabled Enabled Specifies whether you want your BOOTP server if you have one to automatically allocate the stack an IP address and subnet mask DUA1640 5AAA02 Port Setup This page specifies the port state enable or disable link state partition state and the segment to which the port is attached as shown in Figure 7 9 DUA1640 5AAA02 gt Port 24 Setup Connector Type RJ45 Link State Prese
61. Resilient Link Pairs To set up a resilient link pair you need to manage the stack that both links in the pair are connected to The number of resilient link pairs you can set up is only restricted by the number of ports you have in the stack When you set up the resilient link pair you need to specify the ports that the main link and standby link are connected to gt Load Balancing does not move ports that are part of a resilient link pair DUA1640 5AAA02 Add Resilient Link DUA1640 5AAA02 Resilient Link Rules Always follow these rules when setting up a resilient link pair m Only 10BASE T and fiber optic ports if the hub has a fiber optic transceiver module fitted can be part of a resilient link a Configure the resilient link pair at only one end of the link In other words only one stack controls each resilient link pair you set up m Each resilient link pair can only have one main link and one standby link the ports used can be on different hubs in the stack m Each link must not belong to more than one resilient link pair m For a port that is part of a resilient link pair Do not disable the link pulse generation you cannot disable this using the web interface or Quick Config manager a Do not enable security for the port If you have more than two stacks there are a number of ways you can use resilience when linking them Remember to connect the stacks correctly for both links refer to Connecting Diffe
62. SuperStack II PS Hub User Guide 3C16405 PS Hub 40 12 port 3C16406 PS Hub 40 24 port 3C16450 PS Hub 50 24 port http www 3com com Part No DUA1640 5AAA02 Published July 1997 3Com Corporation 5400 Bayfront Plaza Santa Clara California 95052 8145 3Com Technologies 1997 All rights reserved No part of this documentation may be reproduced in any form or by any means or used to make any derivative work such as translation transformation or adaptation without permission from 3Com Technologies 3Com Technologies reserves the right to revise this documentation and to make changes in content from time to time without obligation on the part of 3Com Technologies to provide notification of such revision or change 3Com Technologies provides this documentation without warranty of any kind either implied or expressed including but not limited to the implied warranties of merchantability and fitness for a particular purpose 3Com may make improvements or changes in the product s and or the program s described in this documentation at any time UNITED STATES GOVERNMENT LEGENDS If you are a United States government agency then this documentation and the software described herein are provided to you subject to the following restricted rights For units of the Department of Defense Restricted Rights Legend Use duplication or disclosure by the Government is subject to restrictions as set forth in s
63. THER ASSUMES NOR AUTHORIZES ANY OTHER ANY OTHER LIABILITY IN CONNECTION WITH THE SALE INSTALLATION TS PRODUCTS F ITS TESTING AND EXAMINATION DISCLOSE EXIST OR WAS CAUSED BY CUSTOMER S OR USE NEGLECT IMPROPER INSTALLATION OR TESTING UNAUTHORIZED ODIFY OR ANY OTHER CAUSE BEYOND THE RANGE OF THE INTENDED USE LIMITATION OF LIABILITY TO THE FULL EXTENT ALLOWED BY LAW 3CO LIABILITY WHETHER BASE CONSEQUENTIAL INDIRECT PURPOSE ALSO EXCLUDES FOR IT SELF AND ITS SUPPLIERS ANY D IN CONTRACT OR TORT INCLUDING NEGLIGENCE FOR INCIDENTAL SPECIAL OR PUNITIVE DAMAGES OF ANY KIND OR FOR LOSS OF REVENUE OR PROFITS LOSS OF BUSINESS LOSS OF INFORMATION OR DATA OR OT OUT OF OR IN CONNECTION WITH THE SALE INSTA FAILURE OR INTERRUPTION OF ITS PRODUCTS EVEN IF 3COM OR ITS AUTHORIZED RESELLER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES AN OR REFUND OF THE PURCHASE PRICE PAID AT 3COM S O DAMAGES WILL NOT BE AFFECTED IF ANY REMEDY PROV LLAT HER FINANCIAL LOSS ARISING ON MAINTENANCE USE PERFORMANCE D LI TY TO REPAIR REPLACEMENT PTION THIS DISCLAIMER OF LIABILITY FOR DED HEREIN SHALL FAIL OF ITS ESSENTIAL Some countries states or provinces do not allow the exclusion or limitation of implied warranties or the imitation of incidental or consequential damages for certain products supplied to consumers or the imitation of liability for personal injury so the
64. USING THE WEB INTERFACE Configuration Pages Initialize A p Load Balancing Reset This section describes the fields that appear on the pages in the Configuration category The first page displayed is the Initialization page This page is used to initialize the stack Initializing the stack causes it to return to its factory default settings You may want to do this if the stack has been previously used in a different part of your network and its settings are incorrect for its new environment CAUTION Initializing the stack removes all configuration information including security resilient links and passwords However IP SLIP and default router information is retained to ensure you can continue management communication with the stack over the network The stack s passwords return to the default passwords This page is used to initiate the load balancing feature in the stack For information on load balancing refer to Chapter 4 You can configure the stack s load balancing feature by using the Load Balancing Tool refer to Load Balancing on page B 18 The stack may take some time to complete the load balancing operation The load balancing feature will not work if Load Balancing has been disabled by using the Load Balancing Tool Load Balancing works by monitoring traffic levels so the stack only starts to benefit from it when it has been powered on for a few hours and Load Balancing has been enabled for a
65. able warranty period Standard warranty service for software products may be obtained by telephoning 3Com s Corporate Service Center or an Authorized 3Com Service Center within the warranty period Products returned to 3Com s Corporate Service Center must be pre authorized by 3Com with a Return Material Authorization RMA number marked on the outside of the package and sent prepaid insured and packaged appropriately for safe shipment The repaired or replaced item will be shipped to Customer at 3Com s expense not later than thirty 30 days after receipt of the defective product by 3Com WARRANTIES EXCLUSIVE IF A 3COM PRODUCT DOES NOT OPERATE AS WARRANTED ABOVE CUSTOMER S SOLE REMEDY FOR BREACH OF THAT WARRANI PAID AT 3COM S OPTION REMEDIES ARE EXCLUSIVE TO THE FULL EXTENT ALLOWE AND ARE IN LIEU OF ALL OT TY SHALL BE REPAIR REPLACEMENT OR REFUND OF THE PURCHASE PRICE D BY LAW THE FOREGOING WARRANTIES AND HER WARRANTIES TERMS OR CONDITIONS EXPRESS OR IMPLIED EITHER IN FACT OR BY OPERATION OF LAW STATUTORY OR OTHERWISE INCLUDING WARRANTIES PURPOSE AND SATISFACT PERSON TO ASSUME FOR IT MAINTENANCE OR USE OF 3COM SHALL NOT BE LIAB TERMS OR CONDITIONS OF LE UNDER THIS WARRANTY THAT THE ALLEGED DEFECT ANY THIRD PERSON S MIS ATTEMPTS TO REPAIR OR M OR BY ACCIDENT FIRE LIGHTNING OR OTHER HAZARD IN THE PRODUCT DOES NOT ERCHANTABILITY FITNESS FOR A PARTICULAR ORY QUALITY 3COM NEI
66. al changes have to be made DUA1640 5AAA02 DUA1640 5AAA02 Workgroups 1 11 m There is extra security Hub segments can be isolated from the cascaded segments so that only workstations on the same hub segment can communicate with each other m Port switching enables you to extend any existing workgroups you may have across the whole network infrastructure including shared Ethernet workgroups 1 12 CHAPTER 1 ABOUT THE PS HUB Workgroup Example This example shows how a stack of three PS Hubs can easily create a network with the desired workgroups Table 1 1 shows how the users are grouped Table 1 1 Groupings Hub Development Accounts Marketing Test Isolated Top A B C Middle D E F G H J K L Bottom M N O P Q R S T Figure 1 10 shows how the required workgroups are created using a stack of PS Hubs Figure 1 10 Workgroup Example see Table 1 1 DUA1640 5AAA02 Workgroups 1 13 Your workgroups are easy to change Table 1 2 shows several changes to the example and the simple actions needed to implement the changes Table 1 2 Changes to the Workgroups Action to implement Change to workgroups Hub affected change A Band C become part of Top Reconnect segment 1 Development cascaded segment 1 to cascaded segment 1 R S and T become part of Marketing Bottom Switch ports for R S cascaded segment 3 and T to segment 3 U and V are new users on the bottom Bottom Switch new ports for hub and
67. ample to display the system configuration the CLI would read Select menu option system display m Abbreviated commands for speedy navigation of the menus you need only enter enough characters to uniquely identify the menu you want at the prompt For example to display system configuration the CLI would read Select menu option sy di As you navigate through the menus the prompt changes to display your current position in the hierarchy For example if you are in the interface sub menu of the system menu ready to enter your next option the prompt reads Select menu option system Entering Commands When you reach the menu level containing the specific command you want to enter you are prompted for a command name Commands can also be entered at the end of the menu string Where applicable default values for commands are shown in parentheses after the prompt If you press the Return key for a command with such a value the hub continues to use that value Returning to the Previous Menu You can return to the previous menu by entering q at the prompt Returning to the Top level Menu You can return to the top level menu by pressing the Esc key Obtaining Help You can get help at any time by entering at the prompt 6 6 CHAPTER 6 USING THE COMMAND LINE INTERFACE Quick Guide to the Table 6 2 lists all of the commands available from the CLI and shows Commands you briefly what each one does and the pages in thi
68. an Affects the operation of the last port port 12 or 24 depending connect the PS Hub to any workstation or piece of on your hub Refer to Connecting Different Hubs and Stacks to Your Hub The last port 12 or 24 is affected by the MDI MDIX on page 3 16 switch and can be used to link to a different hub or x 2x o x MDI N DO MDIX 13x 18x 19x 409 HERB TCVR 1 TCVR2 gt Power socket Refer to Important Safety Information at the front of this guide for correct selection of the power cord The hub automatically adjusts to the supply voltage and can operate from 100 240V AC You can power on your hubs in any order and make your port connections at any time Figure 3 1 Redundant Power System Transceiver Module slots socket Refer to Using Transceiver Modules If you have a SuperStack Il on page 3 12 Redundant Power System connect it to this socket For information about the Redundant Power System refer to the manual that accompanies it The LEDs and Ports the PS Hub 40 is shown DUA1640 5AAA02 gt Status LEDs Indicate the status of each port 10BASE T ports Green the link between the port and the next piece of network equipment is OK Green flashing the port has been disabled by management o
69. ard lifetime limited warranty is lifetime excluding the power supply and fans See below for terms and conditions of this warranty HARDWARE 3Com warrants its hardware products to be free from defects in workmanship and materials under normal use and service for the following lengths of time from the date of purchase from 3Com or its Authorized Reseller Network adapters Lifetime Other Hardware products One year unless otherwise specified above Spare parts and spare kits 90 days If a product does not operate as warranted above during the applicable warranty period 3Com shall at its option and expense repair the defective product or part deliver to Customer an equivalent product or part to replace the defective item or refund to Customer the purchase price paid for the defective product All products that are replaced will become the property of 3Com Replacement products may be new or reconditioned Any replaced or repaired product or part has a ninety 90 day warranty or the remainder of the initial warranty period whichever is longer 3Com shall not be responsible for any software firmware information or memory data of Customer contained in stored on or integrated with any products returned to 3Com for repair whether under warranty or not SOFTWARE 3Com warrants that the software programs licensed from it will perform in substantial conformance to the program specifications therefor for a period of ninety 90 days f
70. ask 5 7 6 8 summary of differences between the PS Hubs 2 1 SuperStack hubs 3 16 switch configuring B 17 connections 3 5 database 2 3 icon B 13 Switch Configuration page 7 16 Switch Configuration panel B 17 switching 1 8 2 2 benefits 1 10 features 2 3 how it works 1 8 identifying ports B 13 System Name page 7 19 T tasks management 5 2 technical support 3Com URL E 1 Bulletin Board Service E 1 fax service E 2 network suppliers E 3 product repair E 5 using CompuServe E 3 Telnet 5 5 5 11 erminal 5 5 Terminal application 5 10 erminal emulator 5 5 5 9 TFTP server 7 24 B 29 olerance to faults 1 5 ransceiver module 1 6 3 12 blanking plate 3 1 slots 3 2 ransceiver module ports 3 12 PS Hub 40 2 2 PS Hub 50 2 6 Transcend Quick Configuration Manager 5 3 raps 7 22 rouble shooting 8 1 U unfixing ports and segments B 23 unit number 5 1 Unit pages 7 10 Unit Status page 7 11 Unit View 7 10 upgrade utility D 1 upgrading stack B 28 upgrading the stack s management software 7 24 URL 7 2 E 1 user name 7 2 default 6 3 users grouping 1 8 increasing the number of connections 1 5 using 10BASE T cable 3 11 agent upgrade utility D 1 cascade cables 3 14 CLI 6 4 Command Line Interface 6 1 external switch 4 3 Hot Swap Cascade Units 3 15 hub 3 1 labels 3 7 LEDs 3 2 network management 5 1 ports 3 2 Quick Config Manager B 1 rubber feet 3 6 serial web utility C 1 Telnet terminal emulator 5 11 terminal e
71. ation s window appears 2 From the Connect menu select Remote System The Connect dialog box appears 3 Type the IP address of the stack in the Host name field select telnet for the Port field and select vt 100 for the TermType field 4 Click Connect 5 12 CHAPTER 5 MANAGING THE PS HUB Web Interface Through the Console Port gt Over the Network Which Web Browsers are Supported You can manage the PS Hub using its web interface You can access the web interface m Through the console port m Over the network This section has information on accessing the web interface For more information on using the web interface refer to Chapter 7 You can access the web interface through the hub s console port using a management station running SLIP Serial Line Interface Protocol If your management station is running Windows 95 you must use the 3Com serial web utility that is supplied on the CD ROM This is a SLIP driver that sets up SLIP access for web interface management To install and use the serial web utility refer to Appendix C You need to use a null modem cable for connecting your management station directly to the console port This should be available from your supplier There are a variety of null modem cables that you can use For an example of one of these refer to Console Cable on page A 4 You must have an IP stack on your management station so that you can manage over a TCP IP
72. b browser There is also a management application called Transcend Quick Configuration Manager referred to as Quick Config Manager in this guide that is supplied on the CD ROM It runs under Microsoft Windows and provides an easy to use graphical management system The PS Hub s Command Line Interface CLI is a simple text based user interface which allows you to configure some network information for your hub The CLI provides just a subset of the web interface s functionality but is intended as a quick setup tool to get your hub ready for management over the network You can use a Terminal or Terminal emulator to access the CLI The PS Hub s web interface provides easy management of the stack It behaves in a similar way to a web site on the World Wide Web in that you access it using a web browser You use its different pages to change the network information in your stack and perform different management tasks CHAPTER 5 MANAGING THE PS HUB SNMP Network Management The web interface and CLI built into your PS Hub allow you to manage the stack However as your network grows you may need a more powerful SNMP network management application that will control all of your managed units and stacks Whether your network is large or small its ongoing performance growth and security are only as good as its management system 3Com produces a range of powerful graphical SNMP network management applications for example Transce
73. backup connection that takes over should a main connection fail m View statistics m Configure the console port for connection to a modem m Configure user management access levels m Upgrade the management software in the stack with any future agent software upgrade m Configure the stack to send messages called traps to an SNMP network management application for example Transcend Enterprise Manager if certain conditions arise you cannot configure this using the web interface m Perform remote monitoring using RMON not manageable using the web interface or Quick Config Manager m Restart the hub to refresh its statistics and use any new configurations m Initialize the hub to return it to its factory settings IP information is retained DUA1640 5AAA02 How You Can Manage Your Stack 5 3 How You Can Manage Your Stack Command Line Interface Web Interface DUA1640 5AAA02 A stack of PS Hubs is treated as a single manageable entity and the management is distributed Any network address information IP information that you configure for a hub can be used to access the stack The PS Hub has two built in management interfaces which you can access locally through the hub s console port or remotely over the network m A Command Line Interface CLI can be used to set up the stack with network address information m A web interface provides easy management of the stack from any suitable we
74. cess Information panel of the General Info dialog box in Quick Config Manager refer to Appendix B m For management communication to work over the network the port through which your communication reaches the stack must be connected to segment 1 either directly or indirectly of the hub with the IP address configured For information refer to Requirements for Managing Over the Network on page 5 6 The web browser cannot access the stack over a serial link from a Windows 95 management station You must use the 3Com serial web utility SLIP Driver refer to Appendix C The web browser can no longer access the stack Check that the port through which you are trying to access the stack has not been disabled If it is enabled check the connections and network cabling at the port Try accessing the stack through a different port If you can now access the stack a problem with the original port is indicated or it has been switched from segment 1 to another segment Re examine the connections and cabling Possibly there is a network problem preventing you from accessing the stack over the network Try accessing the stack through the console port of one of the hubs and reset the stack Some of the web interface is not displayed in the web browser after downloading This is probably due to large amounts of traffic over the network Either reload download the web interface or click in the part of the web interface that has not displayed a
75. cessed using the web interface the first page of the Getting Started pages is displayed For information on how to use the Getting Started pages refer to Getting Started on page 7 18 SuperStack Il PS Hub 50 Documentation ___3Com Libra 3Com Contacts __3Com STACK EL Management E passes e fx 3 B Lim itis u a E Bi em gt Segment Configuration Cascade Switch Colour cm y REFRESH Configuration Unit Status Unit Name Location aid Contact Unit Description PS Hub 50 mm 4 Hardware Rev 03 01 00 MAC Address 08 00 4e 2b 6e f4 Software Version 2 00 Boot PROM Version B005 Unit Uptime 62 Hrs 44 Mins 14 Secs Unit Attention Light IP Setup Apply Figure 7 2 The Web Interface s Front Page You are now ready to manage the stack If you are unable the access the web interface refer to Solving Problems With the Web Interface on page 8 4 While managing the stack you can use your web browser to look at other web pages or interfaces and then simply use the back button to re access to the web interface You do not need to re enter your user name and password when doing this 7 4 CHAPTER 7 MANAGEMENT USING THE WEB INTERFACE About the The web interface has been designed so that it is easy to use It is Web Interface made up of three areas as shown in Figure 7 3 the banner side bar always displayed and page changes to show the different information ab
76. ch piece of equipment needs only one connection to your stack m It could be that SQE test is enabled for the transceiver module Ensure that it is disabled on the transceiver module Solving Problems With the Command Line Interface DUA1640 5AAA02 The initial Login prompt does not display Check that your terminal or terminal emulator is correctly configured to operate as a standard terminal If this doesn t work try configuring it to operate as a VT100 terminal For console port access check you have performed the wake up procedure correctly by pressing Return several times Check the settings on your terminal or emulator The parity must be set to none the stop bit 1 and the data bits character size 8 The management facility s auto configuration works only with speeds from 1200 to 19200 baud If you still cannot access the hub reset the hub using Quick Config Manager and retry the wake up procedure If this does not work initialize the hub You forget your password Contact your supplier 8 4 CHAPTER 8 PROBLEM SOLVING Solving Problems With the Web Interface The web browser cannot access the stack Check that The stack s IP address subnet mask and default router are correctly configured refer to Giving the Stack an IP Address on page B 9 m The stack has been reset m Web Access has not been disabled for the access level you are using to manage the stack Use the Ac
77. ctions that you must follow for your personal safety Follow all instructions carefully Please read the following safety information thoroughly before installing the PS Hub Installation and removal of the unit must be carried out by qualified personnel only Connect the unit to an earthed power supply to ensure compliance with European safety standards The power cord set must be approved for the country where it will be used The appliance coupler that is the connector to the device itself and not the wall plug must have a configuration for mating with an EN60320 IEC320 appliance inlet For U S A and Canada The cord set must be UL approved and CSA certified The minimum specification for the flexible cord is No 18 AWG Type SV or SJ 3 conductor The cord set must have a rated current capacity of at least 10A a The attachment plug must be an earth grounding type with a NEMA 5 15P 15A 125V or NEMA 6 15P 15A 250V configuration For Denmark The supply plug must comply with section 107 2 D1 standard sheet DK2 1a or DK2 5a For Switzerland The supply plug must comply with SEV ASE 1011 It is essential that the mains socket outlet is installed near to the unit and is accessible You can only disconnect the unit by removing the appliance coupler from the unit This unit operates under SELV conditions Safety Extra Low Voltage according to IEC 950 the conditions of which are maintained only if
78. d on top of any hub or stack Using the Rubber Feet gt Four standard height and two reduced height self adhesive rubber feet are supplied with the hub Do not apply the feet if you intend to rack or wall mount the hub Usage of the feet depends on where the PS Hub is placed If the hub is going to be placed on top of a flat surface or another PS Hub use the four standard height feet If the hub is going to be placed on top of a LinkBuilder FMS II hub or other SuperStack Il unit use two standard height feet towards the front and the two reduced height feet towards the rear CAUTION If the hub is to be part of a free standing stack apply the feet to each marked corner area on the underside of the hub If the free standing stack contains different size hubs ensure that the larger hubs are at the bottom of the stack DUA1640 5AAA02 Using the Labels 3 7 Using the Labels DUA1640 5AAA02 A sheet of four labels is supplied with the hub Some labels have already been attached to the hub The labels on the bottom of the hub show m The product number serial number and MAC Ethernet address of the hub m The safety approvals to which the hub conforms The labels on the rear of the hub show m The product number of the hub m The power safety information The four labels left on the sheet are for you to use as necessary Depending on how you are going to position the hub you may want to stick the
79. dialog box If you are communicating with the stack over the network Windows 95 and Windows NT only and you change the IP address of the hub you need to change the Device Network IP Address entry in the Device Access dialog box refer to Accessing the Stack on page B 8 to continue managing the stack over the network If you are using SLIP Quick Config Manager over the console port ensure that Flow Control is not set to XON XOFF by default it is set to None Unless you need to connect to the stack through a modem do not change the console port or SLIP default settings For information on the console port refer to Changing the Console Port Settings on page B 27 If you require more information on SLIP read the Internet Activities Board document RFC 155 Quick Config Manager does not have a facility to receive traps B 12 APPENDIX B MANAGEMENT USING QUICK CONFIG MANAGER Viewing the Stack Quick Config Manager can display a graphical representation of the stack you are managing with m The ports color coded to show their condition m Buttons showing the names of the segments which can be used to show which ports are connected to the segments m Buttons showing whether the segments are connected or isolated from their respective cascade segments For information on segments and how they work refer to Segments and Port Switching on page 1 8 To display the stack m From the View menu select Zoom
80. ds is not damaged and that the equipment it is connected to is powered on and operating correctly Link between two PS Hubs not working Check your stack connections follow the information given in Connecting PS Hubs Together Stacking on page 3 12 Link between two stacks not working Check your hub connections follow the information given in Connecting Different Hubs and Stacks to Your Hub on page 3 16 It is likely an MDI MDIX Switch is incorrectly set Segment LEDs constantly lit There may be a network loop caused by connecting the segments with m An external switch in addition to the segment switch in a PS Hub 50 m Multiple external switches DUA1640 5AAA02 Solving Problems With the Command Line Interface 8 3 To remove this loop either disable some of the ports that connect the external switch to the segments or isolate the active segment switch in the PS Hub 50 from the cascaded segments Transceiver module not working Check the Status LED for the transceiver module slot There is a problem if the LED is yellow PS Hub 40 or flashing green PS Hub 50 10Mbps transceiver module It may be for these reasons m It could be that the transceiver module is incorrectly fitted highly possible if it is a coaxial transceiver module refer to the manual that accompanies your transceiver module m t could be that a port has partitioned due to a loop in your network Examine your connections and remove the loop Ea
81. e broadcast broadcast storm cascaded segments console port GLOSSARY The IEEE 802 3 specification for Ethernet over Twisted Pair TP cabling In a stack with multiple PS Hub 50 units only one segment switch can be active called the active segment switch the other segment switches are disabled See segment switch The process of removing unused learnt non permanent addresses from the switch database Information capacity measured in bits per second bps that a channel can transmit The bandwidth of Ethernet is 10Mbps The switching speed of a line Also known as line speed The BOOTP protocol allows you to automatically map an IP address to a given MAC address each time a device is started In addition the protocol can assign the subnet mask and default gateway to a device One of the segment switch s operating modes which conforms to the IEEE 802 1d specification Refers to the process of forwarding all packets with unknown addresses to all of the segments except the segment that the packet was received from A message sent to all destination devices on the network Multiple simultaneous broadcasts that typically absorb available bandwidth and can cause network failure The segments that run up and down the stack by the cascade cables to which the PS Hubs internal segments connect or are isolated from The port on the PS Hub accepting a terminal or modem connector It changes the parallel arrangemen
82. e Load Balancing window is first displayed the window shows Utilization the Current Utilization page as shown in Figure B 9 Current 100 100 100 100 o o o o og Total Traffic Seg Seg2 Seg3 Seg u Figure B 9 Current Utilization Page This page shows the current utilization both across the stack and on individual segments Utilization refers to how much of the bandwidth is being used There is one utilization bar for m Each cascaded and isolated segment For example if you have a stack with two isolated segments as shown in Figure B 10 the Current Utilization page would have six separate segment bars four for the cascaded segments and two for the isolated segments m The total traffic Represents the bandwidth being utilized across all segments in the stack as a percentage of the total possible bandwidth for the stack Note that this is not simply the sum of each individual segment s utilization Isolated segment Isolated _ segment Figure B 10 Cascaded and Isolated Segments Example DUA1640 5AAA02 Viewing Utilization DUA1640 5AAA02 History If you click the History tab to the top of the panel the Utilization History page is displayed as shown in Figure B 11 History Total Traffic Kal Seg1 A A H 5 52 205 MES do Seg 3 0 r 1 Sun 13 56 01 Mon 14 26 01 Tue 14 56 01 Ws z Time Figure B 11 Utilization History Page This page shows a g
83. e the 3Com serial web utility SLIP Driver supplied on the CD ROM that accompanies the hub Every time you want to access the web interface use the serial web utility to set up the connection to the web interface it launches your web browser and accesses the web interface using SLIP for you If you have any problems accessing the hub s web interface using the serial web utility refer to Solving Problems With the Serial Web Utility on page C 4 Installing the Serial Web Utility 1 gt The serial web utility can be installed on to a management station that already has other Transcend management applications installed on it The default directory into which the serial web utility is installed is C Program Files 3Com 3Com Serial Web This can be changed during the installation if required The installation program is a standard Windows based installation To install the serial web utility Start Windows 95 If you already have an existing Transcend management application running ensure that it is closed down 2 Insert the CD ROM into your CD ROM drive 3 Select Run from the Start menu APPENDIX C SERIAL WEB UTILITY 4 In the Run dialog box type drive Win95 Drivers Slip SETUP gt where drive is the letter of your CD ROM drive and click OK The installation program starts and checks your system configuration enter any information that s requested If the setup program cannot find specific
84. e the rate at which the utilization information is updated m Change the community name that is used to access the stack DUA1640 5AAA02 Load Balancing Tool Floor 1 hub olx Eile Edit View Configure Help Current History l L i 1 D D D 0 0 Total Traffic Seg 1 Seg 2 Seg 3 Seg 4 in Polling device Figure B 8 Load Balancing Window Because load balancing is part of the PS Hub when you exit from the Load Balancing Tool the load balancing feature continues to work as configured Menus The Load Balancing window has five menu items along the top There is also a pull right menu that can be obtained by clicking on the right mouse button while the mouse pointer is over one of the segments These menu options are described in the rest of this section Changing the When you launch the Load Balancing Tool Quick Config Manager Community Name passes it the community string that it is using so that the Load Balancing Tool can access the stack If you ever change the community string in Quick Config Manager while the Load Balancing Tool is running in the background you need to change the community string that the Load Balancing Tool uses To do this 1 From the Configure menu select Community The Load Balancing Tool displays the Configure Community dialog box 2 Enter the new community name and click OK DUA1640 5AAA02 B 20 APPENDIX B MANAGEMENT USING QUICK CONFIG MANAGER Viewing Current When th
85. ed all four segments are carried between the hubs by cascade cables Automated load balancing Configures the segments so that the traffic is distributed evenly across them making the segments more efficient It also analyses inter segment traffic and moves frequently communicating ports to the same segment 1 4 CHAPTER 1 ABOUT THE PS HUB How You Can Use the PS Hub Building Up a Network The flexibility of the PS Hub allows it to be used in a number of ways You can build up a network or expand a large established network For information on connecting and using your equipment refer to Chapter 3 The PS Hub can be used on its own or in a stack with other PS Hubs All PS Hubs have a useful feature called port switching which allows you to create workgroups within your stack For information on this feature refer to Segments and Port Switching on page 1 8 The PS Hub is ideal for building up a new network It has its own built in management and comes ready to use The PS Hub range is totally scalable enabling you to start with one hub and add to it as your network grows You can connect your workstations and other network equipment to the PS Hub to build a small network as shown in Figure 1 2 Figure 1 2 Building Up a Network When your network grows you can expand it easily by adding more PS Hubs The PS Hub also has an MDI MDIX switch which enables your network to expand further by connecting to other types
86. egment You can find out what ports in the stack are connected to a segment by clicking on that segment s name button on any of the hubs m f the hub segment is isolated from the cascade segment only ports that are connected to the hub s segment are highlighted m f the hub s segment is connected to the cascade segment all other ports in the stack which are part of segments that are connected to the same cascade segment are highlighted The ports and any transceiver module ports that are part of the segment are highlighted with a dark blue surround Click the name button again to turn off the highlighting B 14 APPENDIX B MANAGEMENT USING QUICK CONFIG MANAGER Connecting or Isolating Segments from Their Cascade Segments Next to each segment name button is another button that shows if the segment is connected or isolated from its associated cascade segment m Green with a solid line through it the segment is connected m Blue with a broken line the segment is isolated Double click the button to connect or disconnect the segment from the cascade segment Displaying Information for the Stack You can display information for the stack by double clicking on the zoom view m f you double click on a port the Port Configuration dialog box is displayed This is used to display and configure information about a port m f you double click on anything other than a port or button the General Info dialog box is d
87. elp es 1 1 jJ Apply Figure 7 12 Documentation Page The fields are Help Specifies where the online help system can be found Enter the appropriate directory or web address Examples are m file f help default htm m http yournetwork com help default htm Documentation Specifies where the online documentation can be found Enter the appropriate directory or web address Examples are m file f documentation manual htm m http yournetwork com docs manual htm 7 18 CHAPTER 7 MANAGEMENT USING THE WEB INTERFACE Getting Started gt The Getting Started pages are a series of pages which set up basic information for the stack You are asked m For a descriptive name for the stack m f you want to allocate the stack IP information or leave the allocation to a BOOTP server on your network if you have one A BOOTP server automatically allocates IP addresses to all equipment on your network If you chose to allocate the IP information you are asked For an IP address and subnet mask for the selected unit For an IP address for a default router You may have a default router which you want the hub to use to communicate with other networks m The file path or web address URL for the online help system and documentation files m To enter a new password you can leave it blank if you don t want to change it If you have no previous knowledge of IP refer to IP Addresses on page 5 7 You do not
88. ement par le personnel qualifi m Brancher l unit une source de courant mise la terre pour assurer la conformit aux normes de s curit europ ennes m La cordon d alimentation surmoul doit tre approuv pour le pays auquel il sera utilis m Le socle de connecteur c est dire le connecteur l appareil lui m me et non pas la prise murale doit avoir une configuration pour le branchement avec une admission d appareil EN60320 IEC320 m Pour U S A et le Canada Le cordon surmoul doit tre UL Certifi et CSA Certifi Les sp cifications minimales pour le cordon souple sont No 18 AWG Type SV ou SJ 3 conducteur Le cordon surmoul doit avoir une capacit de courant calcul e au moins de 10A La fiche de fixation doit tre un type mis la terre avec une configuration NEMA 5 15P 15A 125V ou NEMA 6 15P 15A 250V C est essentiel que le socle soit install pr s de l unit et soit accessible Vous pouvez seulement d brancher l unit en enlevant la fiche d alimentation de la prise de courant Cette unit marche sous les conditions SELV Safety Extra Low Voltage conform ment IEC950 ces conditions sont maintenues seulement si le mat riel auquel elle est branch e est aussi en exploitation sous SELV Seulement Pour La France et Le P rou Cette unit ne peut pas tre mise en marche des sources de courant IT Imp dance la terre Si vos sources de courant sont de type IT c
89. ent to view how a port has been set up In particular see if the port is Partitioned because of a network loop a Disabled by management a Part of a resilient link pair Performing security 8 2 CHAPTER 8 PROBLEM SOLVING Solving Problems With the Hub Power LED not lit Check your power cord connection If the connection is secure and there is still no power you may have a faulty power cord which needs replacing with another PS Hub power cord If you have another PS Hub try that hub s power cord with this hub to isolate whether the fault is with the power cord or the hub Power LED yellow The hub has failed its self test due to an internal problem you need to contact your supplier Port Status LED yellow PS Hub 40 or flashing green PS Hub 50 for a 10Mbps transceiver module port It is likely that there is a loop in your network which has caused this port to partition Examine your connections and remove the loop Each piece of equipment needs only one connection to your stack Port Status LED flashing green for a 10BASE T port It is likely that there is a loop in your network which has caused this port to partition Examine your connections and remove the loop Each piece of equipment needs only one connection to your stack Port Status LED not lit for a port that has a connection There is a problem with this connection Check you are using a Straight through 10BASE T cable which is properly connected at both en
90. ents that contain users that communicate frequently You may also want to fix ports that have network equipment other than workstations connected directly to them It is a good idea to fix ports that are m Used to connect your management station to the stack this port must remain on segment 1 Connected to switches servers and receivers of network traffic for example printers Segments To fix or unifx a segment Right click on the segment s name or utilization bar A pull right menu appears next to the mouse pointer which has Fixed and Fixed Ports options If Fixed has a tick next to it the segment is currently fixed If it has not got a tick next to it the segment is currently unfixed 2 Select Fix to make the segment fixed or unfixed B 24 APPENDIX B MANAGEMENT USING QUICK CONFIG MANAGER Ports To fix or unfix a port or multiple ports 1 Right click on the segment s name or utilization bar for the segment that contains the port s A pull right menu appears next to the mouse pointer 2 Select Fixed Ports Quick Config Manager displays a Port Configuration dialog box for the segment as shown in Figure B 13 The dialog box shows a list of all the ports in the stack that are part of that segment and whether they are currently fixed or unfixed Port Configuration x r Ports in current segment Not Fixed Fixed Not Fixed Not Fixed Not Fixed Not Fixed Not Fixed Not Fixed Fixed NVN gt ONUN
91. er equipment for connecting your workstations and other hubs to the PS Hub Your supplier should stock these cables and equipment For information on how the cables pins are connected refer to Cabling on page A 3 Connecting Workstations To connect workstations to your hub you need m One Straight through 10BASE T cable for every workstation We recommend you use shielded 10BASE T cables The maximum length you can use is 100m 328ft In order to comply with the 10BASE T standard ports designed for workstation connections have been marked with the graphical symbol x This denotes a crossover in the port s internal wiring for example 1x 2x 3x For information on connecting workstations to your hub refer to Connecting Workstations to Your Hub on page 3 11 DUA1640 5AAA02 DUA1640 5AAA02 Before You Start 3 5 Connecting PS Hubs Stacking To connect another PS Hub 40 or PS Hub 50 to your hub using the cascade ports you need m One cascade cable for each additional hub Cascade cables have resilience built into them which protects the internal segments and management communication that is carried between the hubs in the stack You can increase this resilience by using SuperStack Il PS Hub Hot Swap Cascade Units with the cascade cables refer to Using Hot Swap Cascade Units on page 3 15 Cascade cables are available from your supplier in a variety of lengths refer to Cascade Connections on page
92. es and Passwords Table 6 1 shows the default users that can access the hub and their level of access We recommend that setting a password is the first task you carry out on the hub Setting a password prevents unauthorized management access to the hub or stack Table 6 1 Default Users Default User Name Password Access Level monitor monitor Monitor this user can view but not change all manageable parameters manager manager Manager this user can access and change the operational parameters but not special security features security security Security this user can access and change all manageable parameters admin Admin this level is the same as Security At the top level of the CLI if you enter the command logout the management session is terminated Automatic Logout As a security measure a management session will be terminated if there is a period of inactivity lasting longer than 30 minutes After the session has terminated the first key that you press returns you to the login prompt 6 4 CHAPTER 6 USING THE COMMAND LINE INTERFACE Using the CLI Menus CLI Menu Structure When you log on to the CLI correctly the top level menu is displayed as shown in Figure 6 1 The unit description unit name and unit number are shown ps Hub 50 and Marketing 1 in this example Menu options 3Com SuperStack II PS Hub 50 ip Administer IP logout Logout of Command Line Inter
93. ette unit doit tre aliment e par 230V 2P T via un rapport de transformation d isolation de 1 1 avec un point de connexion secondaire tiquet Neutre branch directement la Terre la Masse Les ports RJ45 de paire tordue Ceux ci sont les prises de courant de donn es RJ45 prot g es Ils ne peuvent pas tre utilis s comme prises de courant t l phoniques Brancher seulement les connecteurs RJ45 de donn es ces prises de courant Les c bles de donn es blind s ou non blind s avec les jacks blind s ou non blind s l un ou l autre peuvent tre branch s ces prises de courant de donn es Socle Pour Alimentation Multiple Brancher seulement une alimentation multiple de 3Com cet socle Suivre pour les d tails les directives de l installation dans le manual qui accompagne l alimentation multiple WICHTIGE SICHERHEITSHINWEISE WARNUNG Warnungen enthalten Anweisungen die zur eigenen Sicherheit unbedingt zu beachten sind Bitte befolgen Sie alle Anweisungen sorgf ltig und genau Bitte unbedingt vor dem Einbauen des PS Hub Einheit die folgenden Sicherheitsanweisungen durchlesen m Ein und Ausbau des Ger tes ist nur von Fachpersonal vorzunehmen m Das Ger t an geerdete Stromversorgung anschlie en um eine bereinstimmung mit den europ ischen Sicherheitsbestimmungen zu gew hrleisten m Der Anschlu kabelsatz mu mit den Bestimmungen des Landes bereinstimmen in dem er verwendet werden soll
94. evice Access dialog box B 5 diagnostic LEDs 3 1 dialog box Community Polling B 8 device access B 5 IP Setup B 10 map B 5 Software Upgrade B 28 differences between the PS Hubs 2 1 different hub connecting 3 5 3 16 stacks configuring B 4 switch connecting 3 5 dimensions A 1 disconnecting 10BASE T cable 3 11 displaying information 6 9 distributed management 1 5 Documentation page 7 17 double clicking B 14 downlink 2 7 port 2 3 download utility D 1 downloading new software to the stack B 28 E easy setup option B 10 EMC A 2 emulator 5 9 entering commands 6 5 environment for operation A 1 equipment connecting 3 11 that comes with the hub 3 4 Ethernet address of the hub 3 7 repeater 1 1 rules 3 16 shared workgroups 1 10 example of workgrouping 1 11 expanding a network 1 6 external links 7 5 switch using 4 3 extra bits 3 4 F factory defaults returning to 6 11 7 20 fast configuration of the stack 7 18 Fast Ethernet resilience 2 5 fault tolerance 1 5 fax service See 3ComFacts features 1 2 1 8 feet 3 6 FIFO buffers 5 14 File menu device access B 5 reset view B 4 Filter capture for RMON 6 12 finding cause of a problem 8 1 fixed ports and segments 4 3 B 23 flexible growth 1 5 flow control 7 14 frequent spot checks 3 17 functional standards A 2 future expansion 1 5 G gateway default 6 8 general information about the hub 1 1 Getting Started pages 7 18 graphical representation B 12
95. f the packet An address in the switch database that has been made permanent Permanent addresses are not removed from the switch database by the ageing process A set of rules for communication between devices on a network The rules dictate format timing sequencing and error control Tolerance For example the PS Hub s cascaded cables make a stack of PS Hubs resilient because you can power off a unit without it affecting the other units in the stack You can also build resilience into your network by having extra equipment and cabling that carries your traffic if other equipment and cabling fails See resilient link A pair of ports that can be configured so that one will take over data transmission should the other fail See also main port and standby port Standard 8 wire connector for IEEE 802 3 10BASE T networks Remote Monitoring Subset of SNMP MIB Il which allows monitoring and management capabilities by addressing up to ten different groups of information Redundant Power System Part of the SuperStack Il product range provides a backup source of power when connected to the PS Hub segment switch segments SLIP SmartAgent SNMP stack standby port switch switch database TCP IP The internal switch in a PS Hub 50 It connects the four cascaded segments so that devices connected to the cascaded segments can communicate through the segment switch The segment switch works by learning addresses and st
96. face system Administer system level functions Type q to return to the previous menu or for help RSR RSR RE a euere ana Marketing 1 Select menu option Figure 6 1 Top level menu Use the CLI by selecting options from this menu and from the others below it Each menu option is accompanied by a brief description of what that option does Figure 6 2 shows the menu command structure for the CLI Top level menu Ipse interface define display system capture display initialize inventory password reset unit Figure 6 2 CLI Menu Structure From the top level menu you can access two sub menus a IP Menu From here you can configure IP parameters m System Menu From here you can view system configuration configure CLI parameters change your password reset and initialize the hub DUA1640 5AAA02 Navigating the Menus and Entering Commands DUA1640 5AAA02 Using the CLI Menus 6 5 You can navigate the menus using any of the following methods Following the menu hierarchy at the select menu option prompt type your selected menu name and press Return The screen changes to show the next level of menus available or the list of commands available within your selected menu m Entering multiple menu names on the same line if you are familiar with the menu structure you can enter successive menus on the same line at the select menu option prompt For ex
97. fice If you are unable to receive support from your network supplier technical support contracts are available from 3Com Contact your local 3Com sales office to find your authorized service provider using one of these numbers Telephone Number Regional Sales Office Telephone Number 3Com Corporation P O Box 58145 5400 Bayfront Plaza Santa Clara California 95052 8145 U S A 3Com Asia Limited Australia P R of China Hong Kong India Indonesia Japan Korea Malaysia New Zealand Philippines Singapore Taiwan R O C Thailand 3Com Benelux B V Belgium Netherlands 3Com Canada Calgary Montreal Ottawa Toronto Vancouver 3Com European HQ 3Com France 800 NET 3Com or 1 408 764 5000 408 764 5001 fax 61 2 9937 5000 Sydney 61 3 9866 8022 Melbourne 8610 68492568 Beijing 86 21 63740220 Ext 6115 Shanghai 852 2501 1111 91 11 644 3974 6221 572 2088 81 6 536 3303 Osaka 81 3 3345 7251 Tokyo 822 2 319 4711 60 3 732 7910 64 9 366 9138 632 892 4476 65 538 9368 886 2 377 5850 662 231 8151 4 32 2 725 0202 31 30 6029700 403 265 3266 514 683 3266 613 566 7055 416 498 3266 604 434 3266 49 89 627320 33 1 69 86 68 00 3Com GmbH Austria Czech Republic Slovak Republic Germany Central European HQ Hungary Poland Switzerland 3Com Ireland 3Com Latin America U S Headquarters Northern Latin America Argentina Brazil Chile Colombia Mexico Per
98. for information on how to use it HyperTerminal can usually be found from the Windows Start menu in Programs Accessories To start a HyperTerminal session after connecting to the hub s console port Double click on the Hypertrm exe icon to start the application The Connection Description dialog box appears Enter a dummy name in the Name field and click OK The Phone Number dialog box appears Select the serial port that you are using to connect to the hub in the Connect using field The COM Properties dialog box appears Configure the data bits to 8 stop bit to 1 parity to none and click OK Click in the main HyperTerminal window and press Return several times to start the communication 5 10 CHAPTER 5 MANAGING THE PS HUB Terminal Terminal can usually be found from the Main window in the Accessories program group To start a Terminal session after connecting to the hub s console port Double click on the Terminal icon to start the application If the Default Serial Port dialog box appears select the serial port that you are using to connect to the hub and click OK From the Settings menu in the main Terminal window select Terminal Emulation The Terminal Emulation dialog box appears 4 Select DEC VT 100 ANSI and click OK 5 From the Settings menu select Communications The Communications dialog box appears Configure the data bits to 8 stop bit
99. g Over the Network gt When managing your stack over the network you must remember that regardless of your method of management The hub or stack must be correctly configured with IP information You must make a direct management connection through the console port to do this or use a BOOTP server IP addresses are unique no two hubs must have the same IP address If you have no previous knowledge of IP refer to IP Addresses on page 5 7 If you have a BOOTP server it can automatically assign your network equipment including the PS Hubs with IP information so that it can be communicated with and managed over the network Refer to the documentation that accompanies your BOOTP server for more information m Any IP information configured for a hub in a stack can be used to access the whole stack If the stack is physically split in two the IP information remains with the hub and is used by its half the other half has no IP information so it becomes unmanageable over the network You can configure more than one hub in a stack with IP information We recommend you do this for the top and bottom hubs to obtain redundant management capabilities should the stack split m P must be correctly set up for your management station m You can manage the hub or stack over the network through any of the ports However for the communication to work over the network the port through which your communication reaches the stack mus
100. g as you cannot manage the hub without it To enter the community string From the Configure menu select Community Polling Quick Config Manager displays the Community Polling dialog box as shown in Figure B 3 Community 7 Polling r Community String Read wiite Default pom Bitmap or je Graph s seconds IV Invoke zoom view on start up Figure B 3 Community Polling Dialog Box 2 Enter the community string in the box 3 Click OK gt Changes made to this dialog box only take effect for new windows Any graphs or zoom view windows that are already open will continue to use the old values Close these windows and reopen them to use the new values DUA1640 5AAA02 Giving the Stack an IP Address B 9 Giving the Stack an IP Address DUA1640 5AAA02 gt You can configure the stack with an IP address and other address information enabling it to communicate over become part of an IP network The stack does not need an IP address to make Quick Config Manager work with it over a serial connection You need to give the stack an IP address if you want to manage it over the network using m An SNMP network manager for example Transcend Enterprise Manager m Quick Config Manager Windows 95 and Windows NT only m The web interface m The Command Line Interface over Telnet Any IP information given to a hub in the stack is used by the whole s
101. g box select the Segment Conf category Quick Config Manager displays the Segment Configuration panel as shown in Figure B 6 General Info Floor 1 hub x Category Stack Info Segment Stat s AA Segment Conf Resilience e i Name Segment To see more options click on the category list at left Figure B 6 Segment Configuration Panel Using the Unit pull down list box select the hub for which you want to configure segments The Unit pull down list box displays the name of the hub if configured or the number of the hub in the stack In a correctly connected stack the bottom hub is unit 1 B 16 APPENDIX B MANAGEMENT USING QUICK CONFIG MANAGER 4 Using the Segment pull down list box select the segment to which you want to move ports 5 Highlight the ports in the Port Segment list and click Add gt gt to add them to the Segment Member Ports list 6 Click Apply to confirm your changes before choosing any other hubs or segments for which you want to move ports 7 Click OK p In the unlikely event that you should lose your management connection while moving ports simply close this dialog box perform a Reset View and then re enter this dialog box to continue moving ports If you have a Zoom View of the stack open it is not automatically updated with the information you configured using this panel To update the Zoom View select Update Zoom from the View menu Unit Select the hub in t
102. gement station is to use You also have the option of changing the PC SLIP Address Device URL Flow Control and Speed after the installation is complete DUA1640 5AAA02 6 When you have finished the final installation dialog box is displayed informing you that the serial web utility has been installed on your management station Click Finish to close the dialog box You are asked if you want to restart Windows 95 so that it can use the new settings you have configured You must restart Windows 95 before running the serial web utility When you return to the Windows 95 desktop the serial web utility shortcut Serial Web Management created by the installation program is visible The utility also has its own program group called Serial Web under the default program group specified during the install which contains m Serial Web Management Launches the serial web utility m Serial Web Setup Displays the Advanced Configuration Parameters dialog box which allows you to view and change some of the settings the serial web utility uses when it is run m License agreement Using the Serial Web Utility DUA1640 5AAA02 Every time you want to access the web interface through a serial link make your management connection refer to Web Interface on page 5 12 and use the serial web utility to set up your connection Either m Double click on the Serial Web Management shortcut m Select the Serial
103. gment switch which can interconnect the segments in the stack so that the workgroups on the segments can communicate m The PS Hub 50 has a transceiver module slot which can be fitted with a 10Mbps or 100Mbps 3Com transceiver module providing you with the option of having a 100Mbps network connection for example 100BASE TX or 100BASE FX This allows you to connect to 100Mbps networks or network equipment for example a server For information on the differences between the PS Hub 40 and the PS Hub 50 refer to Chapter 2 Stack of PS Hubs with a PS Hub 50 Stack of PS Hubs with a PS Hub 50 100Mbps 100Mbps NetBuilder II Bridge Router Lag Server 1 Figure 1 5 Migrating to a Higher Performance Network DUA1640 5AAA02 Workgroups 1 7 Workgroups What Are Workgroups DUA1640 5AAA02 An important feature of the PS Hub is that you can create workgroups A good way to organize your network is to neatly group your users in a logical way called workgroups For example if your office consists of four departments you can mirror this by having four workgroups as shown in Figure 1 6 Development Accounts Workgroup 1 Workgroup 2 Marketing Test Workgroup 3 Workgroup 4 Figure 1 6 Workgroups You can keep these workgroups separate from each other so that the communication is contained within each workgroup or you can use the switching functionality of a PS Hub 50 to enable communication
104. gments m Name the segments Segment Configuration Please select which segments should be attached to the cascade Use the text box to change the name of the segment Iv Development connected to Cascade Iv JAccounts connected to Cascade Iv Marketing connected to Cascade Iv Test connected to Cascade Apply Figure 7 10 Segment Configuration To view which ports belong to a segment click on the segment button on the Unit View The graphic changes and ports that are members of that segment are highlighted with a dark blue surround To move a port to a different segment use the Port Setup page for that port refer to Port Setup on page 7 13 7 16 CHAPTER 7 MANAGEMENT USING THE WEB INTERFACE Switch Configuration gt Permanent Address Management This page is used to select which cascaded segments the active segment switch is attached to Click on the checkboxes to connect or isolate the switch as necessary This functionality is only available for the PS Hub 50 For information on the segment switch refer to How Does the Segment Switch Work on page 2 3 To add or edit the permanent address entries in the active segment switch s database click Permanent Address Management The Permanent Address Management page is displayed This page is used to add or edit permanent addresses in the active segment switch s database as shown in Figure 7 11 Permanent Address Management Segment M
105. grading m Success The upgrade was successful m Failure with a message One or more of the units failed to upgrade successfully m Status unknown There has not been a recent upgrade Software Upgrade x Unit Descriptions Unit Description Software 03 PS Hub 50 24 Port 4 Segment Cancel 02 PS Hub 40 24 Port 4 Segment 01 PS Hub 40 24 Port 4 Segment Refresh Server Information IP Address 0 0 0 0 Browse File Name State of previous update Figure B 14 Software Upgrade Dialog Box DUA1640 5AAA02 Solving Problems With Quick Config Manager B 29 2 Specify the IP address of the TFTP server that has the upgrade file on it 3 Specify the file name Do not enter a path The upgrade file must be in the appropriate directory on the TFTP server that the server has been configured to look in The file name format is m PS Hub 40 software upgrade pshxx_yy bin m PS Hub 50 software upgrade ps xx_yy bin Where xx_yy is the version of agent software You can specify multiple file names separated by spaces to upgrade PS Hub 40 and PS Hub 50 units in the stack at the same time for example psh02_00 bin psf02_00 bin Click OK Solving Problems With Quick Config Manager DUA1640 5AAA02 You cannot access the hub over a serial connection for the first time There may be a number of reasons for this m For a successful local management connection you need to use a sta
106. guring B 17 icon B 13 segmentation benefits 1 10 how it works 1 8 segments 1 8 configuring B 14 connecting B 14 fixing and unfixing B 23 graphs 7 25 identifying ports B 13 identifying which ports are part of it 7 10 isolating B 14 LEDs 3 2 load balancing 4 1 naming B 14 selecting management access method B 5 self test 3 17 8 1 self adhesive rubber feet 3 6 self selecting switch mode 2 3 separate networks 1 8 serial access C 1 serial number of the hub 3 7 serial web utility C 1 server B 29 setting up IP information 6 8 online help system and documentation 7 9 2 settings console port 5 8 displaying 6 9 management station A 6 shared Ethernet workgroups 1 10 sheet of labels 3 7 siting your hub 3 6 SLIP address 5 7 6 8 driver C 1 subnet mask 6 8 small network building 1 4 SNMP 5 5 network management application problems 8 5 Socket power 3 2 Redundant Power System 3 1 3 2 software 1 8 upgrade for stack B 28 upgrading 7 24 Software Upgrade dialog box B 28 Software Upgrade page 7 24 software version 7 11 solving problems 8 1 specifications A 1 speed console port 7 14 spot checks 3 17 stack 5 1 accessing B 8 connecting 3 5 3 16 information displaying 6 10 management 5 1 name 7 19 resilience 3 13 upgrading B 28 Stack Attn LED 3 2 standards A 2 standby link 7 21 7 22 starting Quick Config Manager B 4 status LEDs 3 2 sticky labels 3 7 stop bit 5 8 straight through 10BASE T cable 3 4 3 5 A 3 subnet m
107. hapter 4 Ways you can manage the hub and how to start your Chapter 5 management session Information on using the Command Line Interface to set up Chapter 6 the hub for management Information on using the web interface to manage the hub or Chapter 7 stack of hubs Information on solving any problems Chapter 8 The hub s dimensions the standards it conforms to and the Appendix A cabling you can use with it Information on using Quick Config Manager to manage the hub Appendix B or stack of hubs Information on installing and using the serial web utility Appendix C Information on using the agent upgrade utility Appendix D Technical support Appendix E Conventions Table 1 and Table 2 list conventions that are used throughout this guide Table 1 Notice Icons Icon Notice Type Alerts you to gt Information note T Caution Warning Important features or instructions Risk of system damage loss of data or to personal safety Risk of severe personal injury Table 2 Text Conventions Convention Description Syntax The word syntax means you must evaluate the syntax provided and supply the appropriate values Placeholders for values you must supply appear in angle brackets Example Change the password by using the following syntax password lt string gt In this example you must supply a password string for lt string gt Commands The word command means you must enter the gt command exactly as shown
108. have to use the Getting Started pages to configure this information as it can all be configured using other pages in the web interface If you have already configured some of this information for the stack it appears in the appropriate fields on the pages When you have entered the information in a page click Apply to display the next page You can use the back button of your web browser to return to a previous page When you display the last page click Finish to accept the changes you have made and to exit from the Getting Started pages If you have changed any of the IP information you may need to re access the web interface using the new IP address DUA1640 5AAA02 Password Setting This page changes the password for the user level that you are using as shown in Figure 7 13 The passwords that you type do not appear on the screen rd Setting Enter your new password below The name can consist of up to 10 characters and is case sensitive New Password Clear Confirm Password Apply Figure 7 13 Password Setting Page The fields are New Password Type the new password you want to use Confirm Password Retype the password for confirmation System Name This page allows you to enter a name for the stack Use a descriptive name for example First floor stack The name that you specify for the stack appears on some of the CLI and web interface pages DUA1640 5AAA02 7 20 CHAPTER 7 MANAGEMENT
109. he segments port switching The ability to configure the segments allows you to create flexible workgroups as shown in Figure 1 9 which can change and grow with your needs 1 10 CHAPTER 1 ABOUT THE PS HUB Cascaded Segments 4 Isolated Segment Endstations Figure 1 9 Workgroups Benefits of Segments and Port Switching The key to port switching is that you are not restricted by physical connections and can create location and technology independent networks This has many benefits m You can move users between segments easily You simply switch the ports between the segments as necessary using management m The segments are carried throughout the stack You can add hubs when necessary to extend the existing cascaded segments m Each segment is more efficient Local network traffic is contained within each cascaded segment so they avoid congestion from the other segments You can increase the efficiency by using load balancing to configure the segments so that traffic is distributed evenly across them You can use the web interface or Quick Config Manager to configure load balancing For information on how load balancing works refer to Chapter 4 m Total bandwidth is higher Each segment runs at 10Mbps so four separate segments per hub provides a total of 40Mbps per hub m Configuration of the segments can be performed remotely As users are moved between the segments by port switching no physic
110. he stack for example a computer If the stack is connected and configured as recommended the bottom hub in the stack is unit number 1 the next hub up is unit number 2 and so on All PS Hubs must be running agent software version 2 00 or later for them to have the functionality mentioned in this user guide for example the web interface CLI and load balancing However PS Hubs that are running earlier agent software are compatible with newer PS Hubs but do not have the newer functionality You can use Quick Configuration Manager to see what versions of management software are on the units in the stack and to upgrade the stack refer to Upgrading a Stack on page B 28 5 2 CHAPTER 5 MANAGING THE PS HUB Why Manage Your Stack With management you can change and view the way the stack or network operates in the following way m Display a graphical representation for the stack to quickly view the status of each hub and its ports m Display general information for the stack or hubs m Graphically display network information for the stack s cascaded segments m Enable and disable ports and switch them between segments m Perform load balancing so that the traffic is distributed evenly across the segments in the stack resulting in more efficient segments m Configure security for the ports including specifying what equipment is allowed to communicate through the ports on the hub m Setup resilience specify a
111. he stack you want to configure segments for Segment Specify the segment in the hub that you want to configure Port Segment Select the ports you want to add to the segment The list shows what segments the ports are currently members of Segment Member Ports Shows the ports that are members of the segment Add Adds the highlighted ports in the Port LAN list to the Segment Member Ports list Undo Moves the highlighted ports in the Segment Member Ports list from the segment back to the Port Segment list if these changes have not been written to the stack Name Segment Opens a dialog box which is used to configure the name for the segment specified in the Segment field The name of the segment appears on the hub s segment name button on the graphical representation zoom view of the stack and is limited to 8 characters Apply Writes changes to the stack without closing the panel Use Apply if you want to configure another segment OK Writes changes to the stack and closes the panel DUA1640 5AAA02 Configuring the All PS Hub 50 units have a segment switch If you have multiple Segment Switch PS Hub 50 units in a stack only one of the units has its segment switch enabled called the active segment switch You can use Quick Config Manager to connect or isolate the stack s active segment switch from the cascaded segments For information on the PS Hub 50 unit s segment switch refer to Segment Switch on page 2 2
112. he upgrade command m PS Hub 40 software upgrade update pshXX yy bin m PS Hub 50 software upgrade update ps fXX_yy bin Where xx_yy is the version of agent software The version of agent software on the CD ROM is the current version that was in the hub originally View the contents of the CD ROM to see the filename for this version of agent software You can also use the following parameter with the upgrade command to specify the serial COM port to use for the PC The default for this is COM 1 c 1 Of c 2 An example of the upgrade command with this parameter is update c 1 pshXX yy bin 5 Power off the hub 6 Press Return 7 Power on the hub immediately within 5 seconds The utility transfers the agent software to the hub 8 Repeat all of the steps for any other hubs that need upgrading DUA1640 5AAA02 Solving Problems With the Agent Upgrade Utility DUA1640 5AAA02 If you have any problems using the upgrade utility use the following actions to solve your problems An error occurred when the utility tried to connect through the PC s serial port The serial port being used is not the same as the serial port specified in the upgrade command Retry the command ensuring that you specify a value of 1 or 2 for the serial port An error occurred when the utility tried to communicate with the hub There could be a number of reasons for this m The hub was not powered on within 5 seconds of pressing Return
113. his system ensures that every IP address used is unique if you do not have a registered IP address you may be using an identical address to someone else and your network will not operate correctly Obtaining a Registered IP Address InterNIC Registration Services is the organization responsible for supplying registered IP addresses The following contact information is Correct at time of publication Network Solutions Attn InterNIC Registration Service 505 Huntmar Park Drive Herndon VA 22070 USA Telephone 1 703 742 4777 World Wide Web site http www internic com 5 8 CHAPTER 5 MANAGING THE PS HUB Command Line Interface CLI Through the Console Port The CLI allows you to configure a limited set of parameters for the hub You can access the CLI m Through the console port m Over the network This section has information on accessing the CLI For more information on using the CLI refer to Chapter 6 Table E 1 shows the settings for the hub s console port Table E 1 Console Port Settings Data bits character size 8 Stop bit 1 Parity None You can access the console port through a direct local connection or you can set up a remote connection using a modem The terminal or management station with the terminal emulator connected to the console port must use the same settings By default the hub has auto configuration enabled which will change the hub console port settings to match those
114. ick viewing of hub and port status m Hot swappable technology which allows hubs to be added and removed from a stack without affecting stack performance m Mounting brackets for easy installation into a standard 19 inch rack or onto a table or wall m 5 Lifetime Limited Warranty Please refer to the 3Com Corporation Limited Warranty at the back of this guide for more information DUA1640 5AAA02 DUA1640 5AAA02 Management Features Introduction 1 3 Complete SmartAgent management which is built into each hub no additional management cards are needed When PS Hubs are stacked the management is distributed between all hubs in the stack Easy to use built in management interfaces for configuration of your hub or stack locally or over the network A Command Line Interface for quick configuration of IP information for the hub A web interface for comprehensive management of the hub using any suitable web browser Additional management software supplied on the CD ROM including 3Com s Transcend Quick Configuration Manager for Windows An implementation of SNMP for management over the network using the IP protocol Support for traps messages which can alert an SNMP network management station of any problems Built in security and resilience which protects your network Port switching Allows you to build up workgroups by switching ports easily between the four internal segments When stack
115. inventory The CLI displays information similar to this example Position Description Name State 1 PS Hub 50 Marketing Unit Operational 2 PS Hub 40 Accounts Unit Operational 3 PS Hub 40 Development Unit Operational Where m Position The position of the unit in the stack if the stack is correctly connected and configured as recommended the bottom unit in the stack is unit number 1 the next unit is unit number 2 and so on m Description The type of unit m Name The name that you have assigned to the unit m State The current operating status of the unit Unit Operational Indicates that the unit is operating normally Unit Loading Indicates that there is a process taking place for example a software upgrade Resetting the stack simulates powering off and powering on the stack You may want to do this if you want to reset the stack s statistics counters CAUTION Performing a reset may cause some of the data being transmitted over the network to be lost It also clears the non permanent addresses in the PS Hub 50 unit s switch database To reset the stack At the top level menu enter system reset The CLI asks you to confirm the reset Enter y if you wish to proceed or n if you want to stop the reset DUA1640 5AAA02 Initializing the Stack gt Configuring Another Unit in the Stack DUA1640 5AAA02 Commands 6 11 Initializing the stack causes it to return to its factory defau
116. ion which can be used with the web interface Documentation DUA1640 5AAA02 m The online help system is in web format HTML so when it is launched it appears in a secondary window in your web browser m The online documentation is an online version of this user guide in two formats web format HTML and portable document file format PDF The version that gets launched from the web interface is the web format To use the online help system and user guide Decide how you want the web interface to access the files m Copy the files onto your management station s local drive or place the CD ROM in a your management station s CD ROM drive m Copy the files onto a network drive or place the CD ROM in a network CD ROM server m Copy the files onto a web server Copy all of the files into a chosen directory if required On the CD ROM the files are in these directories m Help system Agent version Help m Documentation Agent version Docs In the Documentation page in the Management Settings category specify the location of the online files For information on how to do this refer to Documentation on page 7 17 The web interface always tries to point to the address you give it If you have the online files on your management station s local drive when other users try to access the files the web interface will try to point to your files on their management stations which may or may not exist For this reason it
117. is a good idea to use a network drive or network CD ROM server that is accessible to everyone who is going to use the web interface so that the files are always in the same drive and directory for all users 7 10 CHAPTER 7 MANAGEMENT USING THE WEB INTERFACE Unit Pages Unit View This section describes the fields that appear on the pages in the Unit category The first page displayed is the Unit Status page The Unit View is a graphical version of the unit as shown in Figure 7 7 Jr cw 7 R JE Bal Fr E Segment Configuration Cascade Switch Figure 7 7 Unit View To refresh the Unit View to show any new changes click REFRESH If the Unit View fails to show the latest port changes after a refresh you must make a small configuration change to your web browser refer to Configuring Your Browser on page 5 12 Port Status The 10BASE T and transceiver module ports if transceiver modules are fitted are color coded and show these conditions m Black The port is enabled m Green The port is enabled and has a connection m Gray The port has been disabled by management m Red The port has partitioned disabled itself to prevent a network loop Identifying Which Ports Belong to a Segment To view which ports belong to a segment click on the segment button on the Unit View The graphic changes and ports that are members of that segment are highlighted with a dark blue surround To move
118. isplayed This is used to display and configure information about the stack Configuring Segments You can use Quick Config Manager to set up the segments within the stack to create workgroups For information on the segments and how they work refer to Segments and Port Switching on page 1 8 If you want to use load balancing to configure your segments refer to Load Balancing on page B 18 Quick Config Manager handles segments at two levels the segments within each hub and the cascade segments that run through the stack Refer to Connecting or Isolating Segments from Their Cascade Segments on page B 14 for information on connecting and isolating segments from their associated cascade segments By default all ports are assigned to segment 1 Using the Segment Configuration panel you can m Move the ports between the segments m Name the segments DUA1640 5AAA02 DUA1640 5AAA02 gt For management communication to work over the network the port through which your communication reaches the stack must be connected to segment 1 of the hub with the IP address configured You can configure the segments for any of the hubs in the stack regardless of the hub through which your management reaches the stack To configure the segments Do one of the following a Double click on the graphical representation of the stack but not on a port From the Configure menu select General Info In the General Info dialo
119. istics for the stack s segments only available if there is a PS Hub 50 in the stack Stack icon Selecting a unit displays information about the unit including the Unit View and unit information as shown in Figure 7 3 Table 7 2 shows the external links that appear on the banner You can also click on the 3Com logo to display the 3Com web site Table 7 2 General Icons Help Documentation 3Com Library 3Com Contracts 3Com Support Displays the online help system for the web interface Displays the online version of this user guide Displays the 3Com online library from the 3Com web site Displays the 3Com contact page from the 3Com web site Displays the 3Com customer support page from the 3Com web site NOTE Before you can use the online help system and online version of this user guide you may need to copy the files from the CD ROM onto your management station refer to Online Help System and Documentation on page 7 9 If you do not have a connection to the Internet your web browser is unable to display 3Com pages from the external links 3Com Library 3Com Contacts 3Com Support 7 6 CHAPTER 7 MANAGEMENT USING THE WEB INTERFACE Page Components Web Interface Map When you click on the management categories or stack icon the page area changes to show various kinds of information A page can consist of these components m Fields Display current values and allow you to enter new values if
120. ites have a unique URL so that they can be located INDEX Numerics 100Mbps transceiver module 2 6 10BASE T cable 3 4 3 5 A 3 ports 3 2 using cables 3 11 3Com Bulletin Board Service 3ComBBS E 1 3Com sales offices E 4 3Com URL E 1 3ComFacts E 2 3ComForum E 3 802 1 bridge mode 2 4 A about the hub 1 1 access levels default 6 3 method B 5 accessing CLI 6 2 hub or stack B 8 web interface 7 1 active segment switch 2 4 Add Resilient Link page 7 23 adding hubs to the stack 1 10 3 13 address IP 5 7 adhesive labels 3 7 ageing 2 3 agent software upgrading 7 24 version 7 11 agent upgrade utility D 1 approvals A 2 associated cascade segments 1 8 Attn LED 7 11 auto configuration 5 8 automatic load balancing B 26 avoiding congestion 1 10 B BABT approvals A 1 balancing the segments 4 1 baud rate 5 8 7 14 before you start 3 4 benefits of switching 1 10 bitmap B 12 blanking plate 3 1 BOOTP 7 12 server B 10 box contents 3 4 brackets 3 9 bridge mode 2 4 browser 5 12 building up network 1 4 workgroups 1 8 built in management 1 4 resilience 3 13 Bulletin Board Service E 1 C cables 3 4 3 17 10BASE T A 3 resilience 3 5 specifications A 3 capacity of the switch database 2 3 cascade cables 1 8 3 5 3 13 A 6 ports 3 2 segments 1 8 B 14 units 3 13 cascaded segment switch 2 2 case vents 3 17 CD ROM B 3 changing COM port of the management station B 4 console port B 27 password 6 7 7 19 speed B
121. labels in a more accessible place on the top or on the front of the hub for example All four labels have the name product number serial number and MAC Ethernet address of the hub printed on them CAUTION Do not stick the labels over any of the vents on the sides of the hub 3 8 CHAPTER 3 USING THE PS HUB Rack and Wall Mounting Rack Mounting Two mounting brackets and four screws are supplied with the hub These are used for rack mounting and wall mounting the hub CAUTION Disconnect all cables from the hub s before continuing Remove the self adhesive rubber feet from the underside of the hub if already fitted The hub is 1U high and fits a standard 19in rack To rack mount the hub Place the hub the right way up on a hard flat surface with the front facing towards you Locate a mounting bracket over the mounting holes on one side of the hub as shown in Figure 3 2 Figure 3 2 Locating the Brackets for Rack Mounting Insert the two screws and fully tighten with a suitable screwdriver 4 Repeat the two previous steps for the other side of the hub 5 Insert the hub into the 19in rack and secure with suitable screws not provided DUA1640 5AAA02 Wall Mounting DUA1640 5AAA02 Rack and Wall Mounting 3 9 You can wall mount up to two hubs To fit the brackets to one hub for wall mounting Place the hub the right way up on a hard flat surface with the front facing toward
122. laying 6 9 IP Setup dialog box B 10 IP IPX based network management 5 5 application problems 8 5 isolating problems 8 1 segment switch 7 16 segments 7 15 B 14 items that come with the hub 3 4 L labels 3 7 learnt addresses 2 3 LEDs 3 1 lights 3 1 line speed 5 8 7 14 link external 7 5 main and standby 7 22 state 7 13 load balancing 1 10 4 1 7 20 how it works 4 2 Load Balancing Tool B 18 installing B 2 Local Office Interconnect mode 2 3 logging off from the CLI 6 3 logging on to the CLI 6 2 logical repeaters 3 16 login prompt 6 2 LOI mode 2 3 lost connection 5 11 M MAC addresses 2 3 3 7 7 11 7 16 main link 7 21 7 22 management 5 1 access method B 5 built in 1 4 categories 7 5 connections 5 5 distributed 1 5 features 1 3 methods 5 5 settings A 6 software 1 8 software upgrading 7 24 tasks 5 2 Management Address page 7 12 Management Settings pages 7 17 management station 5 1 COM port B 4 managing requirements 5 6 the hub 5 2 web interface 7 1 with Quick Config Manager B 1 map Quick Config Manager B 5 web interface 7 6 DI MDIX switch 1 4 1 6 3 2 3 5 3 11 3 16 7 23 enu structure for CLI 6 4 essages 7 22 ethods of management 5 5 igrating to higher performance 1 6 2 7 odem 7 14 cables A 5 ounting 3 8 brackets 3 9 oving users 1 10 ultiple PS Hub 50 units 2 4 segment switches 2 4 stacks configuring B 4 33333z 3 33 N naming segments 7 15 B 14 stack 7
123. le transfer and other services for communication among a wide range of computer equipment Telnet TFTP Transcend UDP URL VT100 web World Wide Web A TCP IP application protocol that provides a virtual terminal service letting the user log in to another computer system and access a host as if the user were connected directly to the host Trivial File Transfer Protocol Allows you to transfer files for example software upgrades from a remote device 3Com s management system used to manage all of 3Com s networking solutions User Datagram Protocol An internet standard protocol that allows an application program on one device to send a datagram to an application program on another device Uniform Resource Locator A URL is a unique address of a Web page Using just the URL your Web browser can find Web pages on the World Wide Web A type of terminal which uses ASCII characters VT100 screens have a text based appearance See World Wide Web The World Wide Web often known as the Web is a global network which is part of the Internet It is made up of thousands of different Web pages and Web sites collections of Web pages which are inter linked These Web pages are electronic pages of text and graphics which can be viewed using a Web browser Many businesses non profit organizations and individuals have created Web pages and sites which cover a wide range of information All Web pages and s
124. ling This section shows the pin outs for the various cables that are used with the PS Hub These cables are available from your supplier 10BASE T Cable Zn T L 12345678 87654321 Figure A 1 Pin Numbering for 10BASE T Straight through TxD A TxD TxD 2 2 TxD RxD 3 3 RxD RxD 6 e 6 RxD Pins 4 5 7 and 8 are not used Figure A 2 Straight through 10BASE T Cabling Crossover TxD 1 e 1 TxD TxD 2 je 2 TxD RxD 5 le 3 RxD RxD 6 6 RxD Pins 4 5 7 and 8 are not used Figure A 3 Crossover 10BASE T Cabling DUA1640 5AAA02 A 4 APPENDIX A DIMENSIONS STANDARDS AND CABLING Console Cable 54321 9876 Figure A 4 Pin Numbering for Console Examples of Null Modem Cables You Can Use PS Hub Console Port 9 pin male Screen Shell TxD 3 RxD Ground RTS CTS DSR DCD DTR 4 O ON Ur N Management station Serial Port 9 pin male female Shell Screen RxD TxD Ground RTS DTR CTS DSR DCD O PN NT WN Figure A 5 Example of Null Modem Cabling for 9 pin Management Station DUA1640 5AAA02 PS Hub Management station piena ipn meme Screen Shell
125. lt settings You may want to do this if the stack has been previously used in a different part of your network and its settings are incorrect for its new environment CAUTION Initializing the stack removes all configuration information including security resilient links and passwords However IP SLIP and default router information is retained to ensure you can continue management communication with the stack over the network To initialize the stack At the top level menu enter system initialize The CLI asks you to confirm the initialize Enter y if you wish to proceed or n if you want to stop the initialize The stack s passwords return to the default passwords The unit command allows you log on to another unit in the stack without disconnecting from the current unit To configure another unit At the top level menu enter system unit You are prompted for the unit s number note that the command displays the number of the unit that you are currently configuring Select unit 1 Enter the unit s number When you have finished configuring the unit simply log out to return to the previous unit 6 12 CHAPTER 6 USING THE COMMAND LINE INTERFACE Enabling and You can enable or disable RMON Filter capture By default this is Disabling RMON enabled You may wish to disable this if you have no requirement to Filter Capture perform RMON packet monitoring and wish to increase the security of your network To configure RMON
126. m Access Information updated m Switch Configuration new m Software Upgrade updated m Launch Load Balancing Tool new Installing Quick Config Manager and the Load Balancing Tool Installation Requirements This section has information on what you need to install Quick Config Manager and how to install it The Load Balancing Tool is installed by the Quick Config Manager installation program Quick Config Manager and the Load Balancing Tool require an IBM compatible PC with at least a 486 33 processor Your system must also include m Microsoft Windows 3 1 or later or Windows 95 or Windows NT The Load Balancing Tool only installs and runs on a Windows 95 or Windows NT system m MS DOS 5 0 or later not needed for Windows 95 a Minimum of 13MB available hard disk space a Minimum of 8MB RAM for Windows 3 1 or later 16MB RAM for Windows 95 or Windows NT All RAM above the first megabyte must be configured as extended memory m CD ROM drive m VGA color monitor or higher m Mouse m Console port capable of 9600 baud no parity 8 data bits character size 1 stop bit DUA1640 5AAA02 Installation DUA1640 5AAA02 Procedure A Installing Quick Config Manager and the Load Balancing Too B 3 Quick Config Manager can be installed on its own or onto a workstation that already has other Transcend management applications installed CAUTION Do not install Quick Config Manager in the same di
127. m Die Anordnung der Ger tsteckvorrichtung d h die Steckverbindung am Ger t selbst im Gegensatz zum Wandstecker mu in den EN60320 IEC320 Zuf hrungsstecker am Ger t passen m Es ist wichtig da der Netzstecker sich in unmittelbarer N he zum Ger t befindet und leicht erreichbar ist Das Ger t kann nur durch Herausziehen des Verbindungssteckers aus der Steckdose vom Stromnetz getrennt werden m Das Ger t wird mit Sicherheits Kleinspannung nach IEC 950 SEIV Safety Extra Low Voltage betrieben Angeschlo en werden k nnen nur Ger te die ebenfalls nach SELV betrieben werden m Gedrehte paarfache RJA5 Anschl sse Hierbei handelt es sich um abgeschirmte RJA5 Datenbuchsen die nicht als Telefonbuchsen verwendbar sind Nur RJ45 Datensteckverbinder an diese Buchsen anschlieBen Diese Datenstecker k nnen entweder mit abgeschirmten oder unabgeschirmten Datenkabeln mit abgeschirmten oder unabgeschirmten Klinkensteckern verbunden werden Steckdose F r Redundant Power System Nur ein 3Com Redundant Power System an diese Steckdose anschlie en F r weitere Angaben die genauen Einbauanweisungen im Handbuch zum Redundant Power System befolgen Die Einheit ist unter keinen Umst nden an einen Wechselstrom Netzstecker A C anzuschlie en wenn dieser keine Erdung hat ABOUT THIS GUIDE Introduction Audience Description This guide describes how to set up and manage these SuperStack II PS Hubs m 3C16405 PS Hub 40 12
128. ment connection m f you are using Quick Config Manager over the console port it is best to have the Speed set to Auto Config m While changing the speed Quick Config Manager s line speed may become out of sync with that of the hub To resolve this problem change the SerialAttrib entry to SerialAttrib coM1 line speed n 8 1 under the slip section of the QUICKMGR INI file Restart Quick Config Manager B 28 APPENDIX B MANAGEMENT USING QUICK CONFIG MANAGER Upgrading a Stack gt In the future an upgrade may be issued which enhances the functionality of the PS Hub Any such upgrade will be available on the 3Com Bulletin Board Service refer to 3Com Bulletin Board Service on page E 1 Quick Config Manager allows you to upgrade a whole stack at a time with any such upgrade When a hub is upgraded any configurations that have been made to it are maintained Upgrading a stack of hubs may take up to 5 minutes for each hub To upgrade the stack From the Configure menu select Upgrade Quick Config Manager displays the Software Upgrade dialog box as shown in Figure B 14 This dialog box shows the units in the stack and the version of agent software that they are running At the bottom of the dialog box the state of the previous software upgrade is displayed the text is grayed out if there is a unit in the stack that is running old agent software m Loading One or more of the units in the stack are still up
129. mulator 5 9 transceiver modules 3 12 web interface 7 1 utilization history B 21 V ventilation holes 3 10 3 17 version of agent software 7 11 View menu Update Zoom B 12 Zoom In B 12 viewing current utilization B 20 operation of the hub 3 1 utilization history B 21 visual checks 3 17 W wake up procedure 6 2 wall mounting 3 8 ways you can manage 5 5 web address 7 2 browser 5 5 5 12 help system 7 9 7 17 web interface 5 3 5 12 map 7 6 problems 8 4 using 7 1 what the hub comes with 3 4 why manage the hub 5 2 window Load Balancing Tool B 18 map B 5 Windows 5 1 5 14 workgroups 1 4 1 7 building up 1 8 example 1 11 workstation connections 3 4 World Wide Web WWW E 1 Z Zoom View B 8 B 12 B 16 3Com Corporation LIMITED WARRANTY For first five years After first five years 5 Lifetime Limited Warranty The SuperStack II PS Hub 40 3C16405 and 3C 16450 and PS Hub 50 3C 16450 benefit from 3Com s enhanced 5 Lifetime Limited Warranty This provides a full 5 years of advanced hardware exchange from your date of purchase in accordance with 3Com s standard terms and conditions To qualify you must submit your warranty registration card to 3Com After the initial 5 year period the warranty reverts to 3Com s standard lifetime limited warranty The 5 Lifetime Limited Warranty is not offered or is void where restricted or prohibited by law Limited Lifetime Warranty The duration of the 3Com stand
130. n m The utility must be run from MS DOS It cannot be used from an MS DOS Window within Microsoft Window DUA1640 5AAA02 TECHNICAL SUPPORT 3Com provides easy access to technical support information through a variety of services This appendix describes these services Information contained in this appendix is correct at time of publication For the very latest we recommend that you access 3Com Corporation s World Wide Web site Online Technical Services World Wide Web Site 3Com Bulletin Board Service 3Com offers worldwide product support 24 hours a day 7 days a week through the following online systems m World Wide Web site m 3Com Bulletin Board Service 3ComBBS m 3ComFacts automated fax service m 3ComForum on CompuServe online service Access the latest networking information on 3Com Corporation s World Wide Web site by entering our URL into your Internet browser http www 3Com com This service features the latest information about 3Com solutions and technologies customer service and support news about the company technical publications NetAge9 Magazine and more 3ComBBS contains patches software and drivers for all 3Com products as well as technical articles This service is available through analog modem or digital modem ISDN 24 hours a day 7 days a week E 2 APPENDIX E TECHNICAL SUPPORT 3ComFacts Automated Fax Service Access by Analog Modem To reach the service by
131. n while managing the stack If you have changed the community string of the access level that you are using you must enter the new community string in the Community Polling dialog box Reset the connection by selecting Reset View from the File menu If this does not work it may be that Quick Config Manager s line speed has become unsynchronized with that of the hub To resolve this problem make Quick Config Manager use a different speed by changing the SerialAttrib entry to SerialAttrib CoMl1 line speed n 8 1 under the siip section of the QUICKMGR INI file and restart Quick Config Manager You forget your community string Contact your supplier You cannot access the stack using the web interface or CLI after changing the community string When you changed the community string using the Edit Access Levels dialog box the Device Password and Password Confirmation fields were probably left blank which has blanked the password Log on to the web interface or CLI using the same user level but without a password and change the password You cannot access the Load Balancing Tool The Load Balancing Tool only installs and runs on a Windows 95 or Windows NT system and only works when used over the network in band DUA1640 5AAA02 C SERIAL WEB UTILITY Introduction If you are using a management station running Microsoft Windows 95 and want to access the web interface through the PS Hub s console port you must us
132. nd Enterprise Manager for Windows that give you total control over your entire 3Com network from a single management station Using intelligent 3Com software distributed throughout the network 3Com s Transcend management applications support all of today s platforms and manage a wide variety of 3Com products For further information about which Transcend management application can benefit your growing network call your local sales office refer to Appendix E DUA1640 5AAA02 Methods of Management 5 5 Methods of There are many ways you can connect your management station to the Management stack as shown in Figure 5 1 You can manage the stack m Through the console port known as out of band management Using a web browser Using a terminal emulator Using a terminal Using Quick Config Manager m Over the network known as in band management Using an SNMP network management application Using a web browser Using a terminal emulator over Telnet Using Quick Config Manager Windows 95 and Windows NT p If you are going to manage the stack over the network the quickest way to set it up with the necessary network information is to connect to one of the PS Hubs locally and use the CLI Through the Console Port Over the Network Windows 95 and Windows NT Figure 5 1 Different Management Connections to the Stack DUA1640 5AAA02 5 6 CHAPTER 5 MANAGING THE PS HUB Requirements for Managin
133. nd select the reload frame option in your web browser The Unit View does not display the latest port states Every time you want to change the port states or want to update the Unit View simply click REFRESH underneath the Unit View If the Unit View fails to show the latest port changes after a refresh you must make a small configuration change to your web browser refer to Configuring Your Browser on page 5 12 DUA1640 5AAA02 Solving Problems With an SNMP Network Management Application 8 5 Solving Problems With an SNMP Network Management Application DUA1640 5AAA02 The SNMP network management application cannot access the stack Check that m The stack s IP address subnet mask and default router are correctly configured refer to Giving the Stack an IP Address on page B 9 m The stack has been reset m The stack s IP address is correctly recorded by the management application For information on how to do this refer to the documentation accompanying the application m SNMP Access has not been disabled for the access level you are using to manage the stack Use the Access Information panel of the General Info dialog box in Quick Config Manager refer to Appendix B m For management communication to work over the network the port through which your communication reaches the stack must be connected to segment 1 either directly or indirectly of the hub with the IP address configured For information refer t
134. nd type of transceiver module slots 2 x 10Mbps 1 x 10Mbps or 100Mbps Apart from the differences shown in Table 2 1 the PS Hubs have the same features 2 2 CHAPTER 2 HOW THE PS HUBS DIFFER PS Hub 40 The PS Hub 40 has two 10Mbps transceiver module slots When fitted with transceiver modules these ports can be port switched to any of the hub four internal segments For information on what transceiver modules you can use refer to Using Transceiver Modules on page 3 12 PS Hub 50 Segment Switch The main feature of the PS Hub 50 over the PS Hub 40 is that it has an internal segment switch The segment switch is an additional part of the PS Hub 50 which links the stack s four cascaded segments It provides switching between the four cascaded segments in the stack so that the workstations on those cascaded segments can communicate across the segment switch Using management you can connect or isolate the segment switch from the cascaded segments as shown in Figure 2 1 Cascaded Segments 4 Connected Isolated Figure 2 1 The PS Hub 50 Unit s Segment Switch DUA1640 5AAA02 DUA1640 5AAA02 PS Hub 50 2 3 How Does the Segment Switch Work Information is passed around the network in small units called packets These packets contain various Ethernet addresses called MAC addresses which are unique addresses that are permanently stored within each piece of network equipment m Source address the
135. ndard null modem cable and have the hub s console port set to 9600 baud or auto configuration enabled These are the default settings For information on the console port settings refer to Changing the Console Port Settings on page B 27 m t may be that you have made your management connection to a serial port on your management station which is not the port Quick Config Manager is using Quick Config Manager uses COM1 as the default serial port For information on changing this refer to Running Quick Config Manager on page B 4 m When using Quick Config Manager with Windows 95 and managing through the console port you must first disable FIFO buffers in the Advanced Port Settings window in Windows 95 For information on doing this refer to Through the Console Port on page 5 13 m There may be another application running on your management station that is using the management station s serial COM port for example HyperTerminal B 30 X APPENDIX B MANAGEMENT USING QUICK CONFIG MANAGER You cannot access the hub over the network for the first time Check that m Your management station is correctly configured for IP m The port through which your communication reaches the stack must be connected to segment 1 either directly or indirectly of the hub with the IP address configured For more information refer to Requirements for Managing Over the Network on page 5 6 You lose your management connectio
136. need to use a null modem cable for connecting your management station directly to the console port This should be available from your supplier There are a variety of null modem cables that you can use For an example of one of these refer to Console Cable on page A 4 Connect one end of the null modem cable to the console port on the hub and the other to the serial RS232 port on your management station with Quick Config Manager installed 5 14 CHAPTER 5 MANAGING THE PS HUB gt When using Quick Config Manager with Windows 95 and managing through the console port you must first disable FIFO buffers in the Advanced Port Settings window in Windows 95 To do this In the Windows 95 environment select My Computer Select in turn Control Panel System Device Manager Ports COM1 or whatever COM port you are using instead Port Settings and Advanced The Advanced Port Settings window appears 3 Uncheck the Use FIFO Buffers checkbox 4 Click OK for the Advanced Port Settings window and all of the Over the Network gt windows that were opened in order to access the window When you have made your connection and installed Quick Config Manager you are ready to manage the stack Quick Config Manager uses COM 1 as the default serial port on your management station If you want to change this refer to Running Quick Config Manager on page B 4 You must have an IP stack on your management station so tha
137. nstallation Requirements B 2 Installation Procedure B 3 Running Quick Config Manager B 4 Configuring Multiple Stacks B 4 Selecting Your Management Access Method Windows 95 and Windows NT only B 5 Quick Config Manager Window Map B 5 Accessing the Stack B 8 Giving the Stack an IP Address B 9 Viewing the Stack B 12 Configuring Segments B 14 Configuring the Segment Switch B 17 Load Balancing B 18 Menus B 19 Changing the Community Name B 19 Viewing Current Utilization B 20 Viewing Utilization History B 21 Fixing and Unfixing Segments and Ports B 23 Performing Load Balancing B 25 Changing the Console Port Settings B 27 Upgrading a Stack B 28 Solving Problems With Quick Config Manager B 29 vii viii C SERIAL WEB UTILITY D E Introduction C 1 Installing the Serial Web Utility C 1 Using the Serial Web Utility C 3 Solving Problems With the Serial Web Utility C 4 AGENT UPGRADE UTILITY Using the Upgrade Utility D 1 Solving Problems With the Agent Upgrade Utility D 3 TECHNICAL SUPPORT Online Technical Services E 1 World Wide Web Site E 1 3Com Bulletin Board Service E 1 3ComFacts Automated Fax Service E 2 3ComForum on CompuServe Online Service E 3 Support from Your Network Supplier E 3 Support from 3Com E 4 Returning Products for Repair E 5 GLOSSARY INDEX 3CoM CORPORATION LIMITED WARRANTY EMC STATEMENTS IMPORTANT SAFETY INFORMATION WARNING Warnings contain dire
138. nt Port State Enabled Partition State Not Partitioned Attached to Segment 3 Apply Figure 7 9 Port Setup Page The fields are Connector Type Shows the type of cable connected to the port Link State Shows the state of the link for a twisted pair 1OBASE T port If the port is a transceiver module port this field may be blank Port State Enabled Disabled Specifies whether the port can repeat information to and from the network If the port is part of a resilient link you cannot enable or disable the port You must first delete the resilient link For more information on resilient links refer to What are Resilient Links on page 7 22 Partition State Shows whether the port is on and repeating traffic or has automatically partitioned isolated itself If the port has partitioned check the cabling at both the port and any devices connected to the port and check for network loops Attached to Shows the segment of which the port is a member To make the port a member of a different segment simply select the segment A port only communicates with its segment if it is enabled The Partition State and Attached To fields are not displayed for a 100Mbps transceiver module port in a PS Hub 50 7 14 CHAPTER 7 MANAGEMENT USING THE WEB INTERFACE Console Port Configuration gt This page configures the console port The PS Hub s console port is already correctly configured by default for direct c
139. o Requirements for Managing Over the Network on page 5 6 Traps are not received by the SNMP network management application Check that the address of the management station is entered in the stack You can do this using Quick Config Manager refer to Giving the Stack an IP Address on page B 9 The SNMP network management application can no longer access the stack Check that the port through which you are trying to access the stack has not been disabled If it is enabled check the connections and network cabling at the port Try accessing the stack through a different port If you can now access the stack a problem with the original port is indicated or it has been switched from segment 1 to another segment Re examine the connections and cabling Possibly there is a network problem preventing you from accessing the stack over the network Try accessing the stack through the console port of one of the hubs and reset the stack If you still cannot access the hub use the Access Information panel of the General Info dialog box in Quick Config Manager to check if SNMP access is enabled refer to Appendix B 8 6 CHAPTER 8 PROBLEM SOLVING DUA1640 5AAA02 A DIMENSIONS STANDARDS AND CABLING Dimensions and Operating Environment Table A 1 and Table A 2 show the specifications for the PS Hub Table A 1 Dimensions Power and Operating Environment For All PS Hubs Height 43 6mm 1 7in Width 440mm 17 4in
140. of the connected equipment and automatically detect the baud rate line speed The hub can auto detect a maximum baud rate of 19200 You need to use a null modem cable for connecting your terminal or management station directly to the console port This should be available from your supplier There are a variety of null modem cables that you can use For an example of one of these refer to Console Cable on page A 4 If you are using a modem in your setup you need to use a modem cable For an example of one of these refer to Modem Cable on page A 5 For information on setting up a connecting to the modem refer to the documentation that accompanies the modem DUA1640 5AAA02 gt HyperTerminal DUA1640 5AAA02 Command Line Interface CLI 5 9 To connect your equipment Connect the serial port on your terminal or management station to the console port on the PS Hub using a null modem cable Ensure that the terminal or management station serial port settings match those of the console port on the PS Hub Using a Terminal Emulator You can use the terminal emulator that comes with Microsoft Windows to access the hub s CLI m Windows 95 and Windows NT version 4 or later have a program called HyperTerminal m Other versions of Windows have a program called Terminal For other types of management stations and operating systems refer to the documentation that accompanies your terminal emulator
141. onnection to a management station Only alter these default settings if you are connecting a modem to the console port CAUTION Do not change any of these settings unless you fully understand what you are doing Incorrect settings may lock you out from the hub s console port when you select Apply and you may have to contact your supplier for information on recovering management communication if you cannot access the unit over the network If you want to change the settings but are unsure of the correct settings to use refer to the user documentation that accompanies your terminal or modem The fields are Console connection Terminal Modem Specifies what you are connecting directly to the console port If you are connecting to a modem select Modem otherwise leave as Terminal management station Port Speed 1200 2400 4800 9600 19200 38400 AutoConfig Specifies the baud rate of your management station or modem The stack hub can automatically configure its baud rate to work with your management station or modem Leave this field as Autoconfig if you require auto configuration Flow Control None Xon Xoff Hardware RTS CTS Specifies the flow control option that corresponds to your management station or modem DUA1640 5AAA02 Segment Configuration DUA1640 5AAA02 This page configures the segments in the hub as shown in Figure 7 10 You can m Connect or isolate the segments from their associated cascaded se
142. oring them in a switch database which it can refer to and selectively forward on information The PS Hub 50 units segment switch has two operating modes LOI and bridge The separate networks within a PS Hub to which the ports can be switched The segments can be connected to or isolate from the cascade segments which extend the segments across other PS Hubs Serial Line Internet Protocol A protocol which allows IP to run over a serial line connection Intelligent management agents in devices and logical connectivity systems that reduce the computational load on the network management station and reduce management oriented traffic on the network Simple Network Management Protocol A protocol originally designed to be used in managing TCP IP internets SNMP is presently implemented on a wide range of computers and networking equipment and may be used to manage many aspects of network and end station operation A group of hubs which are connected together in such a way that they function as a single logical repeater The port in a resilient link that takes over data transmission if the main port in the link fails See segment switch The database that the PS Hub 50 unit s segment switch uses to store addresses in so that it can refer to it when forwarding network traffic The switch database can contain learnt addresses and permanent addresses A layered set of communications protocols providing Telnet terminal emulation FTP fi
143. orkstations to Your Hub 3 11 Using Transceiver Modules 3 12 Connecting PS Hubs Together Stacking 3 12 About Cascade Cables 3 13 Using Cascade Cables 3 14 Using Hot Swap Cascade Units 3 15 Connecting Different Hubs and Stacks to Your Hub 3 16 Powering On the Units 3 17 Spot Checks 3 17 LOAD BALANCING Overview 4 1 How Does Load Balancing Work 4 2 Using an External Switch 4 3 Performing Load Balancing 4 3 MANAGING THE PS HUB Introduction 5 1 Why Manage Your Stack 5 2 How You Can Manage Your Stack 5 3 Command Line Interface 5 3 Web Interface 5 3 SNMP Network Management 5 4 Methods of Management 5 5 Requirements for Managing Over the Network 5 6 IP Addresses 5 7 Command Line Interface CLI 5 8 Through the Console Port 5 8 Over the Network 5 11 Web Interface 5 12 Through the Console Port 5 12 Over the Network 5 12 Which Web Browsers are Supported 5 12 Quick Config Manager 5 13 Through the Console Port 5 13 Over the Network 5 14 USING THE COMMAND LINE INTERFACE Accessing the CLI 6 2 Initial Access 6 2 Logging On 6 2 Logging Off 6 3 Using the CLI Menus 6 4 CLI Menu Structure 6 4 Navigating the Menus and Entering Commands 6 5 Quick Guide to the Commands 6 6 Commands 6 7 Changing the Password 6 7 Setting the IP Configuration 6 8 Viewing the Configuration 6 9 Resetting the Stack 6 10 Initializing the Stack 6 11 Configuring Another Unit in the Stack 6 11 Enabling and Disabling RMON Filter Capture 6 12
144. ort that is typically connected to the rest of the network All packets with an unknown destination address are forwarded to the downlink port only and addresses are not learnt on this port CHAPTER 2 How THE PS HUBS DIFFER a Ifa 10Mbps transceiver module is fitted or no transceiver module is fitted the segment switch is in 802 1d Bridge mode All packets with an unknown destination address are forwarded to all ports Default Settings The PS Hub 50 comes ready to use with all of the cascaded segments connected to its segment switch the default configuration To isolate and connect segments and to control the way the hub s segment switch works you must manage the hub For information on management refer to Chapter 5 Multiple PS Hub 50 Units in a Stack The PS Hub 50 has been designed so that you can have multiple PS Hub 50 units in the same stack You may want to do this so that the cascaded segments are always switched when m The stack is split m One of the PS Hub 50 units is removed or fails You could have two PS Hub 50 units in a stack of PS Hubs one at the top and one at the bottom PS Hub 50 units automatically detect each other in the stack and configure themselves so that one of the hubs becomes the active switch and the segment switches in all the other hubs are disabled This is to reduce the possibility of loops in the stack If a PS Hub 50 is removed from the stack or fails the other hubs reconfigure
145. out the stack Banner Unit View ERO m PS Hub 50 Ez SUP STACK External links nm uno ee fied Bk ve Settings all es EEE FEFEFE ni EB Segment Configuration Cascade Switch Colour Key REFRESH Management Configuration categories Unit Status Health Unit Name Location Contact Unit Description PS Hub 50 Hardware Rev 03 01 00 MAC Address 08 00 4e 2b Be f4 Software Version 2 00 Boot PROM Version B005 Side bar d Unit Uptime 52 Hrs 44 Mins 14 Secs Page p gt Unit Attention Light a IP Setup Figure 7 3 Components of the Web Interface General Components If you click on the m Management categories on the side bar The page area changes to show different management information about the stack for example network addresses and graphs m External links on the banner The web browser displays general information which is external to the web interface for example help and contact information DUA1640 5AAA02 DUA1640 5AAA02 About the Web Interface 7 5 Management Categories Table 7 1 shows the management categories that are on the side bar Table 7 1 Management Categories Management Settings External Links Management Settings Displays information about the stack s management settings Configuration Displays information about the configuration of some of the stack s features Health Displays stat
146. ox 6 Click Cancel to close the dialog box gt Setting both the Frequency and Balance At fields to 0 disables automatic load balancing but the load balancing feature still collects data so that you can do a manual load balance at any time DUA1640 5AAA02 Changing the Console Port Settings DUA1640 5AAA02 A gt The PS Hub s console port is already correctly configured by default for direct connection to a management station terminal Only alter these default settings if you are connecting a modem to the console port CAUTION Do not change any of these settings unless you fully understand what you are doing Incorrect settings may lock you out from the hub s console port when you select OK and you will have to contact your supplier for information on recovering management communication Please note that m If you want to change the settings but are unsure of the correct settings to use refer to the user documentation that accompanies your terminal or modem If you change the settings by accident click Cancel to exit from the panel without changing anything m f you are managing a stack of hubs this panel shows and affects the settings of the hub which is unit number 7 in the stack the bottom hub if the stack is correctly configured To make a different hub unit number 1 disconnect the stack in such a way that the required hub becomes the bottom hub However be very careful not to break the manage
147. pages Click on the management category on the side bar that you require The page area changes to show a row of page links and the first page in that category as shown in Figure 7 5 You can make changes to the information on the current page and click Apply when finished HS PS Hub 50 Documentation 3Com Libra 3Com Contacts 3Com u m Eum Management Settings System Name Password Setting Getting Started Documentation Documentation Pr If you have access to on line documentation please select and enter the path name eu below Health Help Apply Figure 7 5 Management Category Page To display another page in that management category click on the link in the row of links The page area changes to show the new page Make changes to the information on the page as necessary click Apply when finished and choose another when ready When you have finished simply choose another management category from the side bar 7 8 CHAPTER 7 MANAGEMENT USING THE WEB INTERFACE Unit View and Unit Pages 1 To display the Unit View and the Unit pages Click on the unit in the stack icon The page area changes to show the Unit View and the Unit Status page You can make changes to the information on the current page and click Apply when finished To display another page click on part of the Unit View or the links underneath it as shown in Figure 7 6 Segment switch
148. r the port has partitioned due to a fault on that port Off nothing is connected to the port PS Hub 40 transceiver module ports LEDs are the same as the 10BASE T LEDs except that they light yellow when the port has partitioned instead of flashing green PS Hub 50 transceiver module port 100Mbps traffic LED lights green when 100Mbps packets are transmitted to and from the port Status LED is the same as the 10BASE T LEDs gt Segment LEDs Indicate the status of the hub s internal segments Green there is network activity on the segment Yellow there is a collision on the segment Collisions are part of normal network operation Off there is no network activity on the segment LEDs and Ports 3 3 gt Power Self Test LED Green the hub is powered on and is operational Green flashing the hub is performing its self test or a software download is in progress Yellow the hub failed its self test refer to Chapter 8 Off the hub is powered off gt Attn LED By default this LED is off You can light this LED to help identify the unit if it is part of a stack To do this use the Unit Status page in the web interface refer to Unit Status on page 7 11 m Status Segment SUPER green enabled link OK off no traffic STACK flashing green disabled yellow green traffic off no link partition yellow collision l 123456789 10 11 12 Tevr
149. raph of the utilization history for m The total traffic that is being produced across all the segments in the stack The utilization is the percentage of the total available bandwidth used to transmit valid and errored packets It does not include bandwidth wasted due to collisions m All the cascaded and isolated segments The graph displays the values as percentages When the PS Hub is powered on it starts recording the values for each segment When you view the Utilization History page information that has already been recorded is displayed If the PS Hub has only just been powered on the graph will not display much information The graph is updated on each poll if new information is available The PS Hub uses default RMON sessions to record the utilization history of the segments If you delete any of these sessions using an SNMP Network Management Application the PS Hub will be unable to record information for those segments and it will not be displayed by the Load Balancing Tool Utilization History page B 22 APPENDIX B MANAGEMENT USING QUICK CONFIG MANAGER How the Utilization History Graph Can Be Used The Utilization History graph is very useful for showing you the positive changes in utilization of load balancing You can view the utilization before and after load balancing was performed as shown in Figure B 12 The total traffic utilization will go down but segment utilization may gt not be distributed evenly
150. rational or not When operational either the main port or the standby port can repeat traffic 7 22 CHAPTER 7 MANAGEMENT USING THE WEB INTERFACE What are Resilient Links You can make the network more robust by adding resilience to it When a link fails all communication between equipment on each side of the link is lost To ensure important communication is not lost the network needs to be reinstated immediately which could be very inconvenient for the network manager If a spare link was configured to automatically pick up when the broken link failed the network would appear to function normally to the user At worst a few packets would be corrupted or lost This is the concept of resilience One link is on standby called the standby link waiting to take over if another link called the main link fails This pair is called a resilient link pair The resilient link ports can be on different hubs in the stack and any network devices can be at the other ends of the links When the network is in use the stack that has been used to set up the resilient link pair monitors the state of both the main link and the standby link If the main link fails the standby link becomes active You can use the Resilient Links page to view the status of the links If you have an SNMP network management application you can configure the hub to send traps messages to the SNMP network management application if the states of the links change
151. rectory as any previously installed Transcend management applications Quick Config Manager and the Load Balancing Tool are installed in subdirectories QCM and LOADBAL under the default directory of CATRANSCND You can change the default directory during installation if required If you have an earlier version of Quick Config Manager on your system you can simply install this version over it The installation program is a standard Windows based installation To install Quick Config Manager Start Microsoft Windows If you already have an existing Transcend management application running ensure that it is closed down 2 Insert the CD ROM into your CD ROM drive Depending on your version of Windows m Select Run from the Start menu Windows 95 and Windows NT version 4 or later m Select Run from the File menu other versions of Windows In the Run dialog box type drive TRANSCND QCM SETUP where drive is the letter of your CD ROM drive and click OK The installation program starts and checks your system configuration Choose which installation you want and enter any information that s requested The installation program reports when installation is complete When the Quick Config Manager installation is complete it has its own program group called Transcend If other Transcend management applications are present the existing Transcend program group now includes Quick Config Manager B 4 APPENDIX B MANAGEME
152. rent Hubs and Stacks to Your Hub on page 3 16 If the main link fails the standby link becomes active Adding Deleting and Swapping Links To add a resilient link pair to the list click Add The Add Resilient Link page is displayed To delete a resilient link pair from the list click on the entry in the list and then click Delete The resilient link pair is deleted and the current active link remains enabled and the standby link is cancelled To swap the main and standby ports for a resilient link pair in the list click on the entry in the list and then click Swap This page is used for adding resilient links to the stack Choose on the main link and click Next and then choose the standby link and click Next The resilient link pair appear in the list on the Resilient Links page 7 24 CHAPTER 7 MANAGEMENT USING THE WEB INTERFACE Software Upgrade gt This page is used to upgrade the management software on the hubs in the stack with a new agent software upgrade as shown in Figure 7 15 You must copy the new software upgrade into the appropriate directory on the TFTP server that the server has been configured to look in For information on how to use your TFTP server refer to the documentation that accompanies it When a hub is upgraded any configurations that have been made to it are maintained Upgrading a stack of hubs may take up to 5 minutes for each hub Software Upgrade Filename Server Address
153. rnt by the PS Hub 50 or external switch so a small amount of packet loss may occur while these addresses are relearnt Invoking Load Balancing Manually To invoke the load balancing feature manually Select Balance Now from the Configure menu The feature immediately starts to load balance the units in the stack This feature is not available if load balancing has been disabled Select Refresh from the View menu to update the information that is displayed in the Load Balancing Tool The stack may take some time to complete the load balancing operation so you may not see changes straight away B 26 APPENDIX B MANAGEMENT USING QUICK CONFIG MANAGER Enabling or Disabling the Automatic Load Balancing Feature To enable or disable the automatic load balancing feature 1 From the Configure menu select Load Balancing Quick Config Manager displays the Load Balancing dialog box 2 Use the Enable Load Balancing check box to enable or disable the automatic load balancing feature If the check box is unchecked the feature is disabled and the Frequency and Balance At fields are disabled 3 Use the Frequency field to enter how many hours you want between each automatic load balance 4 Use the Balance At field to enter a the utilization level at which you want the load balancing feature to automatically start should any segment exceed this level 5 Click Apply to send the changes to the units in the stack before closing the dialog b
154. rom the date of purchase from 3Com or its Authorized Reseller 3Com warrants the media containing software against failure during the warranty period No updates are provided 3Com s sole obligation with respect to this express warranty shall be at 3Com s discretion to refund the purchase price paid by Customer for any defective software products or to replace any defective media with software which substantially conforms to 3Com s applicable published specifications Customer assumes responsibility for the selection of the appropriate applications program and associated reference materials 3Com makes no warranty or representation that its software products will work in combination with any hardware or applications software products provided by third parties that the operation of the software products will be uninterrupted or error free or that all defects in the software products will be corrected For any third party products listed in the 3Com software product documentation or specifications as being compatible 3Com will make reasonable efforts to provide compatibility except where the non compatibility is caused by a bug or defect in the third party s product STANDARD WARRANTY SERVICE Standard warranty service for hardware products may be obtained by delivering the defective product accompanied by a copy of the dated proof of purchase to 3Com s Corporate Service Center or to an Authorized 3Com Service Center during the applic
155. rough the stack and then at regular intervals it moves the ports between the segments if it detects that some benefit will be gained For information on the benefits of load balancing refer to Chapter 4 To configure load balancing you use the Load Balancing Tool which is supplied with and is launched from Quick Config Manager The Load Balancing Tool is installed on your management station by the Quick Config Manager installation program if it is running Windows 95 or Windows NT The Load Balancing Tool only works when used over the network in band from a Windows 95 or Windows NT management station The load balancing feature automatically detects any ports that are connected to switches and ensures that they are not moved You can prevent other ports from being moved by fixing them Note that their traffic levels are still taken into consideration when calculating the segment traffic so they will still affect other ports being moved To display the load balancing window select Load Balance from the Configure menu Quick Config Manager launches the Load Balancing Tool as shown in Figure B 8 You can use the Load Balancing window to m View the current utilization for each of the segments in the stack a View a utilization history for the segments m Fix and unfix segments and ports m Enable or disable the automatic load balancing feature change how often it occurs and specify a threshold at which it occurs m Chang
156. s chapter that describes how to use the command s Table 6 2 Commands Description can Command What does it do be found on define Sets IP and SLIP parameters page 6 8 ip display Displays IP and SLIP parameters page 6 9 capture Enables disables RMON Filter capture page 6 12 system display Displays administration information for page 6 9 the hub initialize Configures the stack back to default page 6 11 settings inventory Lists the units in the stack page 6 10 password Changes the password of the current page 6 7 user reset Simulates powering off and powering page 6 10 on the stack unit Accesses another unit in the stack page 6 11 DUA1640 5AAA02 Commands 6 7 Commands Changing the DUA1640 5AAA02 Password gt The remaining sections in this chapter detail the management functions that can be carried out from the CLI We recommend that setting a password is the first task you carry out on the hub Setting a password prevents unauthorized management access to the hub or stack If you forget your password while logged out of the hub refer to Solving Problems With the Command Line Interface on page 8 3 To set a new password or change an existing password At the top level menu enter system password You are prompted for your old password Old password If this is the first time you are setting a password press Return without entering any text If you already have a password set
157. s you Locate a mounting bracket over the mounting holes on one side of the hub as shown in Figure 3 3 Figure 3 3 Locating the Brackets for Wall Mounting One Hub 3 Insert the two screws and fully tighten with a suitable screwdriver Repeat the two previous steps for the other side of the hub To fit the brackets to two hubs for wall mounting Stack the hubs the right way up on a hard flat surface with the front facing towards you Locate two mounting brackets over the mounting holes on one side of the hubs as shown in Figure 3 4 3 10 CHAPTER 3 USING THE PS HUB Figure 3 4 Locating the Brackets for Wall Mounting Two Hubs Insert the three screws and fully tighten with a suitable screwdriver 4 Repeat the two previous steps for the other side of the hubs To wall mount the hub s Ensure that the wall you are going to use is smooth flat dry and sturdy If necessary attach a piece of plywood securely to your wall Ensure that the plywood is large enough to mount the hub s on Position the hub s against the wall or plywood ensuring that the ventilation holes face sideways Mark on the wall the position of the screw holes for both wall brackets Drill the four holes Using suitable fixings and screws not provided attach the hub s securely to the wall or plywood DUA1640 5AAA02 Connecting Workstations to Your Hub DUA1640 5AAA02 gt This section describes how to
158. scade Units 3C 16430 with the cascade cables These units can be fitted to any PS Hub and provide total hot swap functionality The stack is held together even if units fail or are removed added or powered off For more information on how the Hot Swap Cascade Units work refer to the documentation that accompanies them Hot Swap Cascade Units are available from your supplier refer to Cascade Connections on page A 6 3 14 CHAPTER 3 USING THE PS HUB Using Cascade Cables To connect PS Hubs together using Cascade cables 1 Position the units as required rack mounting or wall mounting them as necessary 2 Starting with the bottom unit using a cascade cable m Connect the cable s connector marked UP to the UP port on the unit m Connect the cable s connector marked DOWN to the DOWN port on the unit directly above it Secure the cable in place by tightening its captive screws as tight as possible by hand 3 Continue up the stack repeating step 2 for each unit as shown in Figure 3 5 Figure 3 5 Connecting PS Hubs Together DUA1640 5AAA02 Connecting PS Hubs Together Stacking 3 15 Using Hot Swap To connect PS Hubs together using Hot Swap Cascade Units Cascade Units 1 Position the units as required rack mounting or wall mounting them as necessary 2 Connect the Hot Swap Cascade Units with cascade cables m Connect the cables connectors marked UP to the UP ports on the Hot Swap Cascade Units
159. st connect the switch to the PS Hub s 10BASE T or transceiver module ports and then port switch those ports to the relevant segments For information on using your switch refer to the documentation that accompanies it Performing Load Balancing DUA1640 5AAA02 You can configure the load balancing feature through management it is disabled by default For information on initiating the load balancing feature using the web interface refer to Load Balancing on page 7 20 For information on setting it up using the Load Balancing Tool which is launched from within Quick Config Manager refer to Load Balancing on page B 18 4 4 CHAPTER 4 LOAD BALANCING DUA1640 5AAA02 MANAGING THE PS HUB This chapter contains the following topics m The management tasks you can perform m What you can use to manage your stack m How you can make a management connection to your stack Introduction gt gt Network management is not required to make the PS Hub work but allows you to change the way it works and to monitor what is happening to the segments and the rest of the network There are many features that can improve the operation of the hub or stack A stack of PS Hubs is treated as a single manageable entity and the management is distributed This guide uses the word stack to refer to a stack of one or more PS Hubs and management station to refer to the piece of equipment you are using to manage t
160. t be connected to segment 1 either directly or indirectly of the hub with the IP address configured If you are going to use load balancing to configure your segments it is a good idea to fix this port to segment 1 m You can manage a mixed stack of PS Hub 40 and PS Hub 50 units If you have multiple PS Hub 50 units only one of the hubs segment switch will be active refer to Multiple PS Hub 50 Units in a Stack on page 2 4 DUA1640 5AAA02 IP Addresses DUA1640 5AAA02 Methods of Management 5 7 If you are uncertain about what IP addresses to assign your equipment contact your network administrator To operate correctly each device on your network for example a hub or management station must have a unique IP address if one is configured IP addresses have the format n n n n where n is a decimal number between 0 and 255 An example IP address is 191 1 1 8 The IP address can be split into two parts m The first part 191 1 in the example identifies the network on which the device resides m The second part 1 8 in the example identifies the device within the network If your network is internal to your organization only you may use any arbitrary IP address We suggest you use addresses in the series 191 1 1 X where X is a number between 1 and 254 Use the default SLIP address of 192 168 101 1 If your network has a connection to the external IP network you must apply for a registered IP address T
161. t of data within computers to the serial form used on data transmission links This port is most often used for dedicated local management Ethernet HTTP Internet Intranet IP address IPX LAN learnt address line speed load balancing A LAN specification developed jointly by Xerox Intel and Digital Equipment Corporation DEC Ethernet networks operate at 10Mbps using CSMA CD to run over cabling HyperText Transfer Protocol The client server protocol used to connect servers on the World Wide Web The name given to a public network which spans the world and consists of thousands of pieces of network equipment If you connect to the Internet you can communicate with equipment and users across the world The Internet uses a set of protocols called TCP IP The World Wide Web is part of the Internet The name given to a large private network Many businesses have Intranets so their employees can exchange information between offices in many countries Employees are often given access to the Internet but the Intranet is protected from external access by firewalls security restrictions imposed on incoming traffic Internet protocol address A unique identifier for a device attached to a network using TCP IP The address is written as four octets separated with full stops periods and is made up of a network section an optional subnet section and a host section Internetwork Packet Exchange A protocol allowing
162. t you can manage over a TCP IP network You can manage the hub or stack over the network through any of the ports However for the communication to work over the network the port through which your communication reaches the stack must be connected to segment 1 either directly or indirectly of the hub with the IP address configured For information on installing and using Quick Config Manager refer to Appendix B DUA1640 5AAA02 USING THE COMMAND LINE INTERFACE This chapter describes how to use the Command Line Interface CLI The CLI is a quick and simple interface that is built in to the hub which allows you to enter various IP address settings reset it and initialize it The web interface and Quick Config Manager can perform most of the tasks that the CLI can do You would normally use the CLI if you have many hubs that you want to set up quickly with IP address information for eventual management using an SNMP network management application Simple help is provided with each command in the Command Line Interface Ensure that your terminal or management station which has the terminal emulator has been appropriately set up for your particular management method and that any necessary connections have been made refer to Command Line Interface CLI on page 5 8 If you have any problems using the CLI refer to Solving Problems With the Command Line Interface on page 8 3 6 2 CHAPTER 6 USING THE COMMAND LINE INT
163. tack If the stack is physically split the IP information remains with the hub and is used by its half the other half has no IP information You can configure more than one hub in a stack with IP information Doing this provides the stack with backup management should the stack split or a hub fail If you have no previous knowledge of IP refer to IP Addresses on page 5 7 The IP Setup dialog box has a useful Easy Setup option which takes you through the IP configuration process The information that you enter during the Easy Setup process is the same as and is entered into the IP Setup dialog box If you are managing a stack of hubs this dialog box shows and affects the settings of the hub which is unit number 1 in the stack the bottom hub if the stack is correctly configured To make a different hub unit number 1 disconnect the stack in such a way that the required hub becomes the bottom hub However be very careful not to break the management connection B 10 APPENDIX B MANAGEMENT USING QUICK CONFIG MANAGER To display the IP Setup dialog box and view or configure the hub s address settings 1 From the Configure menu select P Setup Quick Config Manager displays either the IP Setup dialog box or the Easy Setup Option as shown in Figure B 4 depending on the IP information currently configured for the hub m If an IP address has been configured for the hub and it is not 0 0 0 0 the IP Setup dialog box is displayed
164. the equipment to which it is connected is also operational under SELV France and Peru only a This unit cannot be powered from IT impedance la terre supplies If your supplies are of the IT type this unit should be powered by 230V 2P T via an isolation transformer ratio 1 1 with the secondary connection point labelled Neutral connected directly to Earth Ground U K only a The PS Hub is covered by Oftel General Approval NS G 12345 J 100003 for indirect connection to a public telecommunications system This can only be achieved using the console port on the unit and an approved modem Twisted Pair RJ45 ports These are shielded RJ45 data sockets They cannot be used as telephone sockets Only connect RJ45 data connectors to these sockets Either shielded or unshielded data cables with shielded or unshielded jacks can be connected to these data sockets Sockets for Redundant Power System RPS Only connect a 3Com Redundant Power System to this socket For details follow the installation instructions in the manuals accompanying the Redundant Power System L INFORMATION DE S CURIT IMPORTANTE AVERTISSEMENT Les avertissements contiennent les directions que vous devez suivre pour votre s curit personnelle Suivez toutes les directives avec soin Veuillez lire fond l information de la s curit suivante avant d installer le PS Hub m L installation et l enl vement de l unit doivent tre faits seul
165. to 1 parity to none and click OK Click in the main Terminal window and press Return several times to start the communication DUA1640 5AAA02 Over the Network DUA1640 5AAA02 gt Telnet You can access the CLI over a TCP IP network using Telnet To run Telnet you need a suitable terminal or management station running a terminal emulator You can have multiple CLI management sessions at the same time If a connection is lost inadvertently the connection is closed by the hub after about 30 minutes of inactivity You can manage the hub or stack over the network through any of the ports However for the communication to work over the network the port through which your communication reaches the stack must be connected to segment 1 either directly or indirectly of the hub with the IP address configured Using a Telnet Terminal Emulator You can use the Telnet terminal emulator that comes with Microsoft Windows 95 called Telnet to access the hub CLI To open the Telnet session you must specify the IP address of the hub you want to manage For other types of management stations and operating systems refer to the documentation that accompanies your Telnet terminal emulator for information on how to do this The Telnet application Telnet exe can usually be found in the Windows directory on your PC To start a Telnet session 1 Run the Telnet exe application The Telnet applic
166. ty C 4 using SNMP network management application 8 5 using the hub 8 2 using the web interface 8 4 product number cables A 6 hub 3 7 PS Hub 40 transceiver module ports 2 2 PS Hub 50 1 6 PS Hub 50 segment switch 2 2 PS Hub 50 transceiver module port 2 6 Q Quick Config Manager 5 3 5 5 5 13 installing B 2 map B 5 problems B 29 running B 4 starting B 4 using B 1 quick configuration of the stack 7 18 quick installation connecting equipment 3 11 management software B 3 R reasons to manage the hub 5 2 recycled information ii Redundant Power System socket 3 1 3 2 refreshing the Unit View 7 10 registered IP addresses 5 7 related standards A 2 reliability A 2 removing a hub from the stack 3 13 requirements managing over the network 5 6 reset 6 10 Reset page 7 20 reset view B 4 resilience 3 13 cascade cables 3 5 Fast Ethernet 2 5 resilient links 7 22 Resilient Links page 7 21 returning products for repair E 5 stack to factory defaults 6 11 RJ45 ports 3 2 RMON B 21 Filter capture 6 12 router default 6 8 7 12 RPS icon B 13 socket 3 1 3 2 rubber feet 3 6 rules Ethernet 3 16 resilient links 7 23 rules for managing over the network 5 6 running Quick Config Manager B 4 S scalable 1 4 Screen map B 5 seeing how the hub is operating 3 1 Segment Configuration page 7 15 Segment Configuration panel B 15 Segment Graph page 7 25 segment switch 2 2 active 2 4 colors 7 10 configuration 7 16 confi
167. u Venezuela 3Com Mediterraneo Italy Spain 3Com Middle East 3Com Nordic AB Denmark Finland Norway Sweden 3Com Russia 3Com Southern Africa 3Com U K Ltd 43 1 513 4323 420 2 21845 800 49 30 34 98790 Berlin 49 89 627320 Munich 36 1 250 83 41 48 22 6451351 41 31 996 14 14 353 1 820 7077 408 326 2093 305 261 3266 Miami Florida 541 312 3266 55 11 546 0869 562 633 9242 571 629 4110 52 5 520 7841 7847 51 1 221 5399 58 2 953 8122 39 2 253011 Milan 39 6 5279941 Rome 34 1 383 17 00 971 4 349049 45 39 27 85 00 358 0 435 420 67 47 22 18 40 03 46 8 632 56 00 007 095 258 09 40 27 11 807 4397 44 131 220 8228 Edinburgh 44 161 873 7717 Manchester 44 162 889 7000 Marlow DUA1640 5AAA02 Returning Products for Repair E 5 Returning Products Before you send a product directly to 3Com for repair you must first for Repair obtain a Return Materials Authorization RMA number Products sent to 3Com without RMA numbers will be returned to the sender unopened at the sender s expense To obtain an RMA number call or fax Country Telephone Number Fax Number U S A and Canada 1 800 876 3266 option 2 408 764 7120 Latin America 1 408 326 2927 408 764 7120 Europe South Africa and 44 1442 438125 44 1442 435822 Middle East Elsewhere 1 408 326 2926 1 408 764 7120 04 22 97 DUA1640 5AAA02 10BASE T active segment switch ageing bandwidth baud rate BOOTP bridge mod
168. ubparagraph c 1 ii for restricted Rights in Technical Data and Computer Software clause at 48 C F R 52 227 7013 3Com Centre Boundary Way Maylands Park South Hemel Hempstead Herts HP2 7YU UK For civilian agencies Restricted Rights Legend Use reproduction or disclosure is subject to restrictions set forth in subparagraph a through d of the Commercial Computer Software Restricted Rights Clause at 48 C F R 52 227 19 and the limitations set forth in 3Com Corporation s standard commercial agreement for the software Unpublished rights reserved under the copyright laws of the United States If there is any software on removable media described in this documentation it is furnished under a license agreement included with the product as a separate document in the hard copy documentation or on the removable media in a directory file named LICENSE TXT If you are unable to locate a copy please contact 3Com and a copy will be provided to you Unless otherwise indicated 3Com registered trademarks are registered in the United States and may or may not be registered in other countries 3Com LANplex LinkBuilder NETBuilder Il SmartAgent SuperStack and Transcend are registered trademarks of 3Com Corporation CoreBuilder and FMS are trademarks of 3Com Corporation 3ComFacts is a service mark of 3Com Corporation CompuServe is a registered trademark of CompuServe Inc Windows and Windows NT are registered trademarks of Microsoft

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