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HP 100BaseT Reference Guide

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1. Hub 1 Stacking j Cable Hub 2 LLLI EE Management Hub 3 fil u E Channel Hub 4 SHH Data LLLI Citi LDLLIJLI L Channel Hub 5 CELL Standalone Hub Figure 3 4 Linking Stacked Hubs to Standalone Hubs via Stacking Cable and Cascaded Connections with Straight through Category 5 Twisted pair Cable 3 8 Setting Up Network Connections HP 100Base T Hubs Installation and Reference Guide Linking the Stack to a Management Station In a stacked system connect the management station to either a Hub 12TXM or to a hub that is not isolated from the stack Note that to manage the main collision domain the management station cannot be connected to a hub that is isolated from the stack collision domain because it must communicate with the management agent on the Hub 12TXM Therefore in this example the management station cannot be connected to hub 5 and access the Hub 12TXM because hub 5 is isolated Fus Stacking XY Cable Hub 2 Management Hub 3 Channel Hub 4 Data Channel Isolated Hub 5
2. MDI Cascade Port Transmit Data Transmit Data Receive Data Receive Data Not Used Assignment for MDI X Station Ports 1 12 24 Receive Data Receive Data Transmit Data Transmit Data Not Used Table B 1 RJ 45 Pin Assignments Schematics for both straight and crossover twisted pair cable are shown below Straight Through Crossover Hub Adapter Hub Hub 1 1 1 1 2 2 3 3 6 6 DAWN 2 3 6 Pin Assignments B 1 HP 100Base T Hubs Installation and Reference Guide DB9 Serial Port Pin Description The DB9 serial port on the front panel is used to connect the hub to a management device The VT 100 console interface can be accessed from a terminal a PC running a terminal emulation program or from a remote location via a modem connection Network management software which provides a graphical interface can also be used to discover and map the Figure B 2 hub from a remote location via a modem connection running DB Serial Port SLIP over TCP IP You can use the serial port to configure on the Hub Side port settings e g enabled or disabled or to update device firmware The pin assignments used to connect various device types to the hub s Console Port are provided in the following UR tables EIA CCITT ee Hub s PC DB9 Modem Signal Circuit Signal Description DB9 DTE DTE DB25DCE Direction EE ers Pin Pini DTE DCE C 109 DCD D
3. Hub 5 Figure 3 7 Connecting Remote Stacks using Switch Port Modules Setting Up Network Connections 3 11 HP 100Base T Hubs Installation and Reference Guide Connecting to the Extended Network The stack can be connected to the extended network by attaching the HP 100Base T Hub to a device such as an HP AdvanceStack switch The following figure shows a direct connection from a stacked hub s MDI port to a 100Base TX switch that is serving as a collapsed network backbone Hub 1 _ Stacking C gt Cable Hub 2 Management Hub 3 p Channel Hub 4 Data _ Channel Hub 5 100Base TX Switch Figure 3 8 Connecting to the Extended Network 3 12 Setting Up Network Connections Chapter 4 Configuring the System Making the Connections Required for System Configuration The HP 100Base T Hubs provide a menu driven VT 100 console interface This can be accessed by making a connection to the Console Port on the front of the hub using a terminal or a computer running a terminal emulation program Moreover when configuring the Hub 12TXM you can Telnet into the hub from any computer attached to the
4. Power O Exp Slot Managed Master Backup Management 1 5 15 30 65 pe Partition Disable O Q ome Mode metan O O O O O G O OG 0 C o0 OQ QU X d oS 05 A 5 Console Isolated P 1 Ed 2 B 7 5 7 a jd 1 12 mo O O O O CQ C O Collision O QOO OC O 000 Q 1 3 5 349 15t L k Nl Figure 5 3 Indicators 5 2 Hardware Reference HP 100Base T Hubs Installation and Reference Guide Power Exp Slot Color Green Function Indicator for power supply ON OFF Table 5 1 Power Indicator Unit is receiving power Power is disconnected or power supply has failed Color Green Function Displays status of the Switch Port Module State Indication ON Unit is installed and functioning properly OFF No module is installed in the Expansion Slot BLINKING Module has failed Table 5 2 Switch Port Module Indicator There are two optional Switch Port Modules as described under Connecting to a Switch Port Module in Chapter 2 The indicators provided with each module are described below D AdvanceStack 10 100TX Switch Port Module Ta Y 100 O Link O Fox O xO cal O Rx O MDI X or MDI HP J3247A es ie Figure 5 4 HP J3247A for 100Base TX 7 AdvanceStack 100FX Switch Port Module Link O Tx Rx ie Fox O tk O O O n Col O Rx HP J3248A dai 2 Figure 5 5
5. Complete Standards e Adapts to universal wide range voltage power Conformance i e 100 240 VAC 50 60 Hz e Conforms to IEEE 802 3u Class I repeater specification and 100Base TX standard i e 100 Mbit s Fast Ethernet e Optional Switch Port Modules conform to relevant IEEE specifications and standards for respective media types e Supports MIB II Ethernet Repeater MIB Ethernet MIB and private MIB e Conforms to Simple Network Management Protocol SNMP 1 8 Product Overview HP 100Base T Hubs Installation and Reference Guide Features of HP AdvanceStack Switch Port Modules Networking Flexibility via Switch Port Modules Features of the HP AdvanceStack 10 100TX and 100FX Switch Port Modules are One Expansion Slot supports optional slide in Switch Port Modules for connection to 10Base T 100Base TX or 100Base FX on a separate collision domain Transparent bridging between stack and external device via optional Switch Port Modules Uses adaptive cut through switching which dynamically changes among standard cut through fragment free cut through and store and forward depending on the CRC error rate Two transmission modes full duplex or half duplex Auto detects transmission speed at 100 Mbit s or 10 Mbit s 10 100TX Switch Port Module only Auto negotiates transmission mode for full duplex and half duplex if same feature is supported by attached device otherwise can be manually configured 10 100
6. Expansion Slot Console Ls 100Base TX lt Cascade Port Port Ports Figure 5 1 Front Panel of the Hub 12TXM Hardware Reference 5 1 HP 100Base T Hubs Installation and Reference Guide Figure 5 2 shows the Hub 24TX front panel which includes a comprehensive array of indicators and 24 RJ 45 station ports Note that there is no Expansion Slot on this hub so it does not accept the Switch Port Modules It has the same indicators as the Hub 12TX except that there is no Exp Slot LED and the Console and Isolated LEDs are positioned differently p Device Status r Network Status rs O ostenta enc Er aA rne CIT AdvanceStack Hub 24TX 00ooooo o C 00000000 BERETA vie n xo Wow 0x e g x Tm Sy des do oe one on dmn ccn i f Im fi Lunak Consoe Lo J 100Base TX LC Cd Cascade Port Ports Port Figure 5 2 Front Panel of the Hub 24TX Indicator Panel The front panel includes comprehensive indicators for monitoring the hub It displays the status of the network connections for each port the hub s connection to the stack and the status of each on board SNMP agent A quick glance can provide critical information such as if a problem exists on the network The following sections describe the function of each indicator
7. Standalone Hub I Figure 3 5 Linking Stacked Hubs to a Network Management Station es Setting Up Network Connections 3 9 HP 100Base T Hubs Installation and Reference Guide Interconnecting Isolated Collision Domains Isolated collision domains within a stacked system can be combined into an interconnected network using the Switch Port Modules For example you can connect all of the different collision domains in the stack using several Switch Port Modules as shown below Each Switch Port Module serves as a bridge between isolated collision domains in the stack Using this approach you provide a higher bandwidth by using three separate collision domains but still permit stations to communicate with nodes in other isolated collision domains as required The following figure shows how bandwidth has been raised from 100Mbit s to 300Mbit s ned _ Stacking Y Cable Isolated Hub 2 Management Hub 3 Channel Hub 4 Data Channel Isolated Hub 5 ee a le Go err Figure 3 6 Linking Isolated Collision Domains in a Stacked System 3 10 Setting Up Network Connections HP 100Base T Hubs Installation and Reference Gu
8. Configuring the System HP 100Base T Hubs Installation and Reference Guide Connectivity Test Use the Connectivity Test menu to perform checks on the connection between the Hub 12TXM and another designated device on the network There is an IP and IPX Ping Test plus a Link Test For the Link Test the designated device is identified by its MAC address and for the Ping test it is identified by its network IP or IPX address Packets are sent from the Hub 12TXM to the designated device which then returns a reply If a reply is received by the management station the test passes The number of successful and failed tests are logged and can be compared to the specified number of test repetitions The Connectivity Test menu is shown below HP J3233B AdvanceStack 100Base TX Hub 12TXM Connectivity Test Back to Previous Menu IP Ping Test IPX Test Link Test Back to previous menu Enter to confirm lt Ctrl Z gt to back to Main Menu Figure 4 32 Connectivity Test Menu Configuring the System 4 41 HP 100Base T Hubs Installation and Reference Guide HP J3233B AdvanceStack 100Base TX Hub 12TXM IP Ping Test Back to Previous Menu Destination Station Address 0 0 0 0 Number of Repetitions 1 65535 0 Timeout in Seconds 1 100 0 Successes 0 Failures 0 Start Test Stop Test Back to previous menu Enter to confirm lt Ctrl Z gt to back to Main Menu
9. Connecting Hubs to the Stack All hubs in a stacked system are by definition connected with the Stacking Cable In this example a stacked system using the Stacking Cable through the Stacking Ports connects five hubs together in a single collision domain Note that connecting all hubs in the same stack groups all nodes attached to the stack in a single collision domain All Ethernet frames transmitted by any node are seen by every other node in the stack For a heavily loaded network you can significantly improve performance by isolating a hub from the stack For more information on isolating a hub see the next procedure Hub 1 i Stacking y Cable Hub 2 Management Hub 3 Channel Hub 4 Data Channel Hub 5 epum PRU Figure 3 1 Attaching All Hubs to the Stack Collision Domain Setting Up Network Connections 3 5 HP 100Base T Hubs Installation and Reference Guide Isolating Specific Hub Connections You can connect or isolate the hubs in a stack In a stacked system some hubs may be connected to the stack collision domain while others are isolated In this example hubs 1 2 3 and 4 are in the stack while hub 5 is isolated from the stack To isolate hubs from the stack use the Hub Conf
10. Hayes Smartmodem Optima 28 8 V 34 At the hub end Issue the following AT command AT amp FQ2 amp C2 amp D3S0 1 amp W0 At the user end Issue the following AT command AT amp FW1 amp C1 amp W Hayes Acura 288 V 34 FAX At the hub end Issue the following AT command AT amp FQ2 amp C2 amp D3S0 1 amp W0 At the user end Issue the following AT command AT amp FW1 amp C1 amp W US Robotics Courier V FC V 34 At the hub end Issue the following AT command AT amp F amp COSO 1 amp WO At the user end Issue the following AT command AT amp F amp W Megahertz XJ2288 PCMCIA card modem At the user end Issue the following AT command AT amp F NO amp W Modem Configuration C 1 HP 100Base T Hubs Installation and Reference Guide Practical Peripherals PM288MT II V 34 Issue the following AT command At the hub end AT amp F0 amp C2S0 102 amp D3 amp W0 Issue the following AT command At the user end AT amp FO amp WO C 2 Modem Configuration Appendix C Modem Configuration Before installing the modems one attached to the hub s console port and one attached at the user end to a terminal or PC configure them by connecting one at a time to a PC or terminal and issuing the appropriate AT command Then install the modems in the appropriate locations one connected to the Hub 12TXM and one connected to a PC or terminal The modems listed in this appendix have been teste
11. to set hub values back to factory defaults Save changed value s Press s to write all configuration changes to nonvolatile memory You must save your changes or they will be lost the next time you restart the system Exit Press q to quit the configuration menu and return to the command prompt Table 4 1 Configuration Options in Main Menu Hub 24TX only System Configuration for the Hub 12TX With the VT 100 console interface you can carry out basic configuration on the attached hub such as setting the hub ID isolating the hub from the stack or configuring the Switch Port Module Set up a direct connection to the hub press the Enter key three times and enter the password or just press the Enter 4 8 Configuring the System HP 100Base T Hubs Installation and Reference Guide key if you have not yet configured the password The following menu will be displayed after logging on KKK KKK KK ck ck ck ck ck ck ck ck KKK KKK ck ck k KKK ck ckck ck ck ck ck ckck ck ck KKK ck ck ck KK KKK T HP J3234B AdvanceStack 100Base TX Hub 12TX KKK KKK KK ck ck ck ck ck ck ck ck ck ck ck ck kck kckck ck k ckckckck ck ck ck ck KK ck ck ckck ck k KK KK KKK Hub Status Hub ID E ak Isolated NO ia Command Menu RCM UE TENERA UE COEM Er EE a E ETE c Change password i Change isolation status S h Set Hub ID e Set Expansion slot port status nd d Set values to factory default b S Save chan
12. Back to previous menu Enter to confirm lt Ctrl Z gt to back to Main Menu Figure 4 12 Hub Configuration Hub Selection Menu 4 20 Configuring the System HP 100Base T Hubs Installation and Reference Guide Hub Configuration To configure a hub select it from the list shown above The following Hub Configuration menu will appear allowing you set parameters for the base hub unit and the SNMP agent for a Hub 12TXM HP J3233B AdvanceStack 100Base TX Hub 12TXM Hub Configuration Back to Previous Menu Hub ID a7 Al Position 1 Name H W Ver i0 Type J3233B 002 F W Ver 1 00 Isolated NO SNMP Agent Status PRIMARY H W Ver 7 4 F W Ver 1 00 MAC Address 0000E8 B30056 Bootup Option NORMAL Back to previous menu Enter to confirm lt Ctrl Z gt to back to Main Menu Figure 4 13 Hub Configuration Menu Menu items are briefly described in the following table Description Hub Unit Hub ID Hub identifier within the stack Up to 5 hubs may be connected via the Stacking Cable s management channel Position The physical position in the stack Name Any user defined name for the selected hub Type Indicates hub type as HP J3233B HP J3234B or HP J3272A H W Ver Indicates the current hardware version number of the hub board F W Ver Indicates the current firmware version number of the hub board Isolated Enables you to remove a hub from the collision do
13. Figure 4 33 IP Ping Test Menu Menu items are briefly described in the following table Pee iS eee Poe NUR UN PIPSEIDUODUR ae rns ene eee Destination Station The IP address of the designated device with which you wish to perform connectivity tests Address Number of Repetitions The number of times a test will be repeated Timeout in Seconds The maximum time allowed for a test packet to be sent and returned Successes The number of logged successful tests Failures The number of logged failed tests Start Test Start connectivity tests Stop Test Stop connectivity tests Table 4 26 IP Ping Test Menu 4 42 Configuring the System HP 100Base T Hubs Installation and Reference Guide The ZPX Ping Test menu is shown below HP J3233B AdvanceStack 100Base TX Hub 12TXM IPX Ping Test Back to Previous Menu Destination Station Address 00000000 000000 000000 Number of Repetitions 1 65535 0 Timeout in Seconds 1 100 0 Successes 0 Failures 0 Start Test Stop Test Back to previous menu Enter to confirm lt Ctrl Z gt to back to Main Menu Figure 4 34 IPX Ping Test Menu Menu items are briefly described in the following table IEEE CC ENTEDDUESREIESEEGIUNESSSESWC LIS NSEDERSEERREES Destination Station The IPX address of the designated device with which you wish to perform connectivity tests Address Number of Repetitions The number of times a test
14. Management port 5 12 MDI 5 11 MDI X 5 11 Stacking 5 14 Powering on the hub 2 12 Pre installation requirements 2 1 Product features 1 6 Product specifications D 1 Hub board D 1 Hub stack D 2 Switching criteria D 2 Switching port D 2 Product Support Services F 1 Index Q Quick installation iii R Rear panel 5 13 Regulatory information E 10 Remote configuration methods Remote in band e 4 4 Remote out of band e 4 4 Restarting the agent 4 45 S Safety information E 3 Safety precautions E 1 Sample network configurations 3 5 Security features intrusion protection 3 4 Setting up network connections 3 1 SNMP agent 4 16 SNMP backup agent 3 3 SNMP communities 4 17 Stacking Cable management channel 3 2 Stacking Ports In 5 14 Out 5 14 Station ports 5 11 Statistics Hub 4 29 4 30 4 31 Hub ports 4 33 Switch Port Module 4 35 Switch Port Module Configuring Hub 12TX 4 10 Features 1 9 Parameters 4 24 Switch Port Modules 1 4 1 10 Switching functions 2 11 Switching methods 1 11 Switching technology 1 10 System configuration 4 13 HP 100Base T Hubs Installation and Reference Guide Making the connections for 4 1 System configuration options Direct connection 4 2 Local network connection 4 3 Local network Telnet connection 4 2 Network connection 4 2 Remote connection 4 3 System information 4 12 Syste
15. Troubleshooting HP 100Base T Hubs Installation and Reference Guide and plugging it back in again or by resetting the power the port will try to reestablish communications with the attached device via auto negotiation If auto negotiation fails then communications are set to half duplex by default Based on this type of industry standard connection policy if you are using a full duplex device that does not support auto negotiation communications can be easily lost i e reset to the wrong mode whenever the attached device is reset or experiences a power fluctuation The best way to resolve this problem is to upgrade these devices to versions which support auto negotiation Cabling 1 Verify that the cabling type is correct Be sure all cable connectors are securely seated in the required ports Use 1000 Category 5 cable for all twisted pair connections to 100Base TX ports Straight through cable should be used for all standard twisted pair connections 2 When cascading two devices using RJ 45 station ports at both ends of the cable i e not an MDI port make sure a crossover cable is used Crossover cable should only be used when a cascade port is not available 3 Make sure all devices are connected to the network Equipment may have been unintentionally disconnected from the network LAN Adapters Make sure the LAN adapters installed in workstations are compatible and are in good working condition Troublesh
16. Tx port on the module to the Tx Rx port on the target device i e two separate cables Also when cascading Switch Port Modules make similar connections between the current module and the next device in the stack i e using two separate cables When inserting a cable be sure the tab on the plug clicks into position to ensure that it is properly seated Note that as a general rule the length of fiber optic cable for a single switched link should not exceed 2 kilometers However timing constraints and power budgeting must also be considered when calculating the maximum cable length for your specific environment Collision Domain Timing Constraints Where fiber optic cable and twisted pair links exist in a single collision domain with other repeater devices the fiber length has to be limited to satisfy Fast Ethernet timing constraints The following table should be used as a guide for the maximum fiber length as applied in four basic topology models IEEE802 3u Basic Topology Model Max Fiber Length Single Switched Link full duplex 2000 m half duplex 412m With Class I Repeater TX FX links only 160 m if any T4 links present 131m 208 m With 1 Class II Repeater TX FX links only With 2 Class II Repeaters TX FX links only 111m Table 2 1 Maximum Fiber Lengths for Basic Topology Models 2 8 Installing the System HP 100Base T Hubs Installation and Reference Guide Distance Limit and Power Loss i
17. after attaching the foot pads or install them in a standard EIA 19 inch rack Note that these hubs do not support wall mounting See Chapter 2 for more details 4 Connect any devices that use a standard 100Base TX RJ 45 connector to the RJ 45 MDI X station ports for example a Workstation or server Use 1000 Category 5 unshielded twisted pair UTP or 1000 shielded twisted pair STP cable Also be sure that the length of any twisted pair connection does not exceed 100 meters Refer to Chapter 2 for a more detailed description of calculating the maximum cable length permitted between two end nodes 5 If you are stacking multiple hubs connect the Stacking Cable between the Stacking Ports Out and In found on the rear panel of the hub on adjacent hubs Run a simple chain starting at the Out port on the first managed hub Hub Quick Installation iii HP 100Base T Hubs Installation and Reference Guide 12TXM and ending at the In port on the last hub No more than five hubs can be connected via the Stacking Cable Note When connecting hubs with the Stacking Cable they are all part of the same collision domain by default Also if a Hub 12TXM is present all of the hubs are managed by it 6 Isolate any hubs you want to remove from the stack s collision domain For the Hub 12TXM use the Hub Configuration screen in the VT 100 console interface Select the System Configuration option from the main menu and press Ente
18. only 4 10 Configuring the System HP 100Base T Hubs Installation and Reference Guide System Configuration for the Hub 12TXM and Stack With this interface you can define system parameters manage and control stacked hubs and associated ports and monitor network conditions Set up a VT 100 console connection to the hub press the Enter key three times and enter a user name and password There are two fixed user types Admin read write access and Guest read only access The default user names and passwords are blank The following menu will be displayed after logging on HP J3233B AdvanceStack 100Base TX Hub 12TXM System Configuration Statistics Download Console Security Connectivity Test Restart the Agent Exit System Information lt Enter gt to confirm Figure 4 4 Main Configuration Menu Notes Input options for the selected item are displayed at the bottom of the interface screen For items which require you to choose an option follow your input by pressing the Enter key Use lt Ctrl N gt to scroll through an options list lt Ctrl Z gt to move to an upper level menu or lt Ctrl E gt to close the configuration program To select a configuration item use the arrow keys to position the cursor i e the highlighted box and then press the Enter key Configuration items followed by dots open up another menu screen Menu selections are briefly described in the followi
19. this chapter Hardware Reference 5 7 HP 100Base T Hubs Installation and Reference Guide Link Traffic Color Green Function Indicates port link and activity State diction CE ON Indicates a valid link has been established on this port loc No valid link has been established on this port Indicates that the port is receiving packets blinking is proportional to the ungue traffic passing through the port Table 5 10 Link Traffic Link The Link Traffic LED should light up when a device e g computer establishes a valid connection via the RJ 45 port Troubleshooting If the Link Traffic LED does not light up when a device is connected to a port check that both the hub and connected device are powered on For devices connected to the hub using twisted pair cable check that the cable length does not exceed 100 meters You should use standard straight through cables and not crossover or other specialized cables Traffic Refers to the movement of packets received by the port A port s Link Traffic LED will blink in proportion to the amount of traffic passing through the port The network manager can easily determine the activity on a port by viewing this LED Partition Disable Color Yellow Function Indicates port has been partitioned due to network error or intentionally disabled Indication Indicates port has been partitioned due to an abnormal network condition OFF Port is in g
20. 100Base T Hubs Installation and Reference Guide Console Port The unit has one 9 pin RS 232 male connector labeled Console It can be used to perform basic configuration or to establish a network management connection with the hub By using a direct or remote connection in conjunction with a terminal emulation program you can access the HP 100Base T Hubs VT 100 console interface This console interface can be used to configure the attached hub or stack and to upgrade system firmware Complete details on how to set up a connection to the serial port and how to use the VT 100 console interface are included in Chapter 4 Note Configuration options provided for the Hub 12TX and Hub 24TX are limited because these models do not include an agent Moreover configuration via the Console Port on these models is limited to the attached hub only i e it cannot manage other hubs in the stack Hardware Reference HP 100Base T Hubs Installation and Reference Guide Rear Panel Components The rear panel is similar for all models The figure below shows the rear panel which includes a power socket and two Stacking Ports used for stacking up to five hubs For easier management and control of the hub familiarize yourself with the ports and power socket provided on the rear panel of the hub Power Socket Stacking Ports j Line 50 60Hz j N N 100 127VAC 1 5A 200 240VAC 1 0A Figure 5 6 Rear Panel Power So
21. 45 HAT ener EGER ATERREHES HET SR 1 MERA RA EAR IU SUE AX KAPRRR PLR 89220V v j amp 2 3 f E ERAS Lib FM HFRS A ape RS REI 3 REHM IB GU GERSUD DREGAGE wAHAMA SEALAOUO AD fi CRAUB JE BARBAALA AEST ED REN BRA TAS REC nn SEE BT Bab A ce FA RRA Ta SUR USA SURE RAS EDR RA RR d RERRAKR IF to RAS HVA LG RE He 23h A T A AAT RE PH eRe Gd ATA AG RAR Je SEAT ACE 1 54 i34 YALA 2 8 3 HR pr JK WIR E do TUT PRAHARA ane 48 4 100086 i 010 62625666 4 6101 Je AT A 1 Rede RAI Psd RM wis 010 62625666 5600 45610 242 5 zum A 010 65055280 Safety and Regulatory Statements E 9 HP 100Base T Hubs Installation and Reference Guide Regulatory Statements FCC Class A Statement for U S A Only 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 instruction manual may cause interference to radio communications Operation of this equipment in a residential area may cause interference in which case the user will be required to correct the interference at his own expense TOREJ PHUBRBSERESAEMHRBS VCCI OB CHO lt B MERRMEE CT CORE tAE CH
22. ID Name Admin State Oper State Link State Partition ls ENABLED ENABLED DOWN NO 2 ENABLED ENABLED DOWN NO 3a ENABLED ENABLED DOWN NO 4 ENABLED ENABLED DOWN NO S ENABLED ENABLED DOWN NO 6 ENABLED ENABLED DOWN NO Ta ENABLED ENABLED DOWN NO 8 ENABLED ENABLED DOWN NO 95 ENABLED ENABLED DOWN NO 10 ENABLED ENABLED DOWN NO TT ENABLED ENABLED DOWN NO 12 ENABLED ENABLED DOWN NO Enter to confirm lt Ctrl Z gt to back to Main Menu Figure 4 16 Port Configuration Menu Menu items are briefly described in the following table Field Port 13 24 1 12 Description For a model Hub 24TX this field can be used to toggle between displays for Ports 1 12 and Ports 13 24 This same toggle will also happen immediately by scrolling to the bottom of the Ports 1 12 Sceen or to the top of the Ports 13 24 screen Note this field is not displayed for 12 port hubs Hub identifier within the stack The physical position in the stack as determined by position from the hub with no connection on its In port Numeric identifier of station port on the hub User defined name for selected port User configured state for the port The current operating state of the port Any port may be automatically ENABLED or DISABLED if configured as one of a Backup Link pair Link State Indicates if the port has a valid connection to an external device Partition Indicates if the port is partitioned Refer to Partition Disable Ind
23. ID or isolating the hub from the stack Set up a direct connection to the hub press the Enter key several times and enter the password or just press the Enter key if you have not yet configured the password The following menu will be displayed after logging on Configuring the System 4 7 HP 100Base T Hubs Installation and Reference Guide KKK KK KKK KKK KK KKK KKK KKK KKK KKK ck ckck ck ck KKK ck ck ck KKK ck ck KKK KEK HP J3272A AdvanceStack 100Base TX Hub 24TX KKK KKK KKK KKK KKK KKK KKK KKK ck ck ck KKK ck ckck ck ck ckck ck ck KKK ck ckckckckckokck Hub Status Hub ID ub Isolated NO Command Menu D Pr P P Change password Change isolation status Set Hub ID Set values to factory default Save changed value s Exit menu Enter command Figure 4 1 Main Configuration Menu Hub 24TX only Note Input options for the selected item are displayed at the bottom of the interface screen Menu selections are briefly described in following table Command Description Press c to change the password Passwords can be up to 5 characters long and are case sensitive Change isolation status Press i to isolate the hub from the stack s collision domain hub ID Press h to set the hub identifier to any value from 1 5 When stacked with a management agent note that all hub identifiers are automatically configured Set values to factory default Press d
24. Main Configuration Menu Hub 12TX only Figure 4 3 Configuration Menu for Switch Port Module Hub 12TX only Figure 4 4 Main Configuration Menu Figure 4 5 System Information Menu Figure 4 6 System Configuration Menu Figure 4 7 Network Configuration Menu Figure 4 8 SNMP Configuration Menu Figure 4 9 SNMP Communities Menu Figure 4 10 IP Trap Receivers Menu Figure 4 11 IPX Trap Receivers Menu Figure 4 12 Hub Configuration Hub Selection Menu Figure 4 13 Hub Configuration Menu Figure 4 14 Hub ID Configuration Menu Figure 4 15 Port Configuration Port Selection Menu Figure 4 16 Port Configuration Menu Figure 4 17 Exp Slot Port Configuration Menu 2 2 2 3 3 5 3 6 3 7 3 8 3 9 3 11 3 12 4 9 4 10 4 11 4 12 4 13 4 14 4 16 4 17 4 18 4 19 4 20 4 21 4 22 4 23 4 24 4 25 xvi Contents HP 100Base T Hubs Installation and Reference Guide Figure 4 18 Port Intrusion Control Hub Selection Menu 4 26 Figure 4 19 Port Intrusion Control Menu 4 26 Figure 4 20 Backup Links Menu 4 28 Figure 4 21 Statistics Menu 4 29 Figure 4 22 Stack Statistics Menu 4 30 Figure 4 23 Hub Statistics Hub Selection Menu 4 31 Figure 4 24 Hub Statistics Window 4 32 Figure 4 25 Port Statistics Port Selection Menu 4 33 Figure 4 26 Port Statistics Menu 4 34 Figure 4 27 Exp Slot Port Statistics Menu 4 35 Figure 4 28 Download Menu 4 36 Figure 4 29 TFTP Download Menu 4 37 Figure 4 30 Xmodem Download Menu 4 39 Figure 4 31 Console
25. Pin COM Port Table B 5 Full Pin Connection from Hub s 9 Pin Serial Port to PC s 25 Pin DTE Port Table B 6 Three Pin Connection from Hub s 9 Pin Serial Port to PC s 25 Pin DTE Port Table B 7 Hub s 9 Pin Serial Port to Modem s 25 Pin DCE Port Pin Assignments B 4 B 5 Contents xix Chapter 1 Product Overview Introduction to Fast Ethernet Standard 10 Mbit s Ethernet has served well for past generations of 286 and 386 machines performing simple file transfers However with the inevitable growth in corporate network size and the introduction of fully functional 32 bit PC architectures and operating systems running complex applications 10 Mbit s Ethernet has become a serious bottleneck Among the recent flood of choices for upgrading media bandwidth 100 Mbit s Fast Ethernet has the benefits of low cost compatibility with existing Ethernet applications and the fact that it can run on top of an installed base of twisted pair cabling Moreover by using a dual speed switch 10 or 100 Mbit s Fast Ethernet can be easily integrated into an existing 10 Mbit s Ethernet environment with no need for protocol translation or changes to network software It also includes specifications for a media independent interface MII which permits a switched connection to any of the 100Base T sublayers i e 100Base TX 10Base T or 100Base T4 Brief Description of the HP 100Base T Hubs The HP 100Base T Hubs provide a powerful
26. Security Menu 4 40 Figure 4 32 Connectivity Test Menu 4 41 Figure 4 33 IP Ping Test Menu 4 42 Figure 4 34 IPX Ping Test Menu 4 43 Figure 4 35 Link Test Menu 4 44 Figure 4 36 Screen Messages for Rebooting the Hub 4 45 Figure 5 1 Front Panel of the Hub 12TXM 5 1 Figure 5 2 Front Panel of the Hub 24TX 5 2 Figure 5 3 Indicators 5 2 Figure 5 4 HP J3247A for 100Base TX 5 3 Figure 5 5 HP J3248A for 100Base FX 5 3 Figure 5 6 Rear Panel 5 13 Figure B 1 RJ 45 Connector on the Hub Side B 1 Figure B 2 DB9 Serial Port on the Hub Side B 2 List of Tables Table 2 1 Maximum Fiber Lengths for Basic Topology Models 2 8 Table 2 2 Calculating the Power Budget for Fiber Optic Devices 2 9 Table 2 3 Power Budget for Common Fiber Optic Devices 2 9 Table 2 4 Checking Key LED Indicators 2 14 Table 2 5 Maximum Cable Length 2 15 Table 4 1 Configuration Options in Main Menu Hub 24TX only 4 8 Contents xvii HP 100Base T Hubs Installation and Reference Guide Table 4 2 Configuration Options in Main Menu Hub 12TX only Table 4 3 Configuration Options for Switch Port Module Hub 12TX only Table 4 4 Main Configuration Menu Table 4 5 System Information Menu Table 4 6 System Configuration Menu Table 4 7 Network Configuration Menu Table 4 8 SNMP Configuration Menu Table 4 9 SNMP Communities Menu Table 4 10 IP Trap Receivers Menu Table 4 11 IPX Trap Receivers Menu Table 4 12 Hub Configuration Menu Table 4 13 Port Configuration Menu Table 4
27. Used for connecting hubs together into a stack via the Stacking Ports Provides both data and management channels M One serial cable Used for VT 100 console interface configuration and for out of band and SLIP management M Installation manual M Warranty booklet Please inform your reseller immediately should there be any wrong missing or damaged parts If possible retain the carton including the original packing materials Use them again to repack the unit in case there is a need to return it for repair Quick Installation Quick Installation Hewlett Packard s Hub 12TX Hub 12TXM models each contain 12 Fast Ethernet 100Base TX RJ 45 MDI X ports one MDI cascade port and one Expansion Slot for an optional connection using 10 100TX and 100FX Switch Port Module The Hub 24TX contains 24 Fast Ethernet 100Base TX RJ 45 MDI X ports and one MDI cascade port The design built into the front display panel and configuration options provides a friendly interface that simplifies installation and network troubleshooting If you are already familiar with basic network operations you should be able to install this hub as described below 1 Unpack the HP 100Base T unit 2 Find a location close to the network devices you need to connect and within easy reach of an electrical outlet 3 Mount the hub on a desktop or any other flat surface If you are installing multiple hubs you can stack them on top of each other
28. authorized reseller for assistance System Diagnostics Power and Cooling Problems Installation If the Power indicator does not turn on when the power cord is plugged in you may have a problem with the power outlet power cord or internal power supply as explained in the previous section However if the unit powers off after running for a while check for loose power connections power losses or surges at the power outlet and verify that the fans on the back of the unit are unobstructed and running prior to shutdown If you still cannot isolate the problem then the internal power supply may be defective In this case contact your HP authorized reseller for assistance Verify that all system components have been properly installed If one or more components appear to be malfunctioning e g the power cord or network cabling test them in an alternate environment where you are sure that all the other components are functioning properly Transmission Mode If any devices are attached to a 10 100TX Switch Port Module and operate at full duplex but do not support auto negotiation then you must manually set the transmission mode for this port on the hub The transmission mode must always be set manually for the 100EX Switch Port Module The default method of selecting the transmission mode for the 10 100TX Switch Port Module is auto negotiation Therefore if the Link signal is disrupted e g by unplugging the network cable
29. configuration If you want to use a remote PC to configure the Hub 12TXM via a modem connection at the remote site make sure the modem s baud rate is 9600 and that the AT command set is supported Configuring the Hub 12TXM Site Connect the hub s DB9 Console Port to the modem s serial port using a standard serial cable For most modems which use a 25 pin port you will have to provide an RS 232 cable with a 9 pin connector on one end and a 25 pin connection on the other end You do not have to set the modem communication parameters at the hub s site because the hub will automatically configure it to auto answer mode Just set the modem to force Data Set Ready DSR signals Configuring the System 4 3 HP 100Base T Hubs Installation and Reference Guide Before accessing a hub using a SLIP link be sure you have already set the hub s serial IP address via the VT 100 console interface Configuring the Remote Site At the remote site connect the PC s COM port COM 1 4 to the modem s serial port Set terminal emulation type to VT 100 specify the port used by your PC i e COM 1 4 and then set communications to 8 data bits 1 stop bit no parity and 9600 bps Also be sure you set the flow control to none Remote Configuration Methods Remote Out of Band If you establish a remote connection as described in the previous section you can use the on board configuration functions on the Hub 12TXM via the VT 100 co
30. domain Hubs 1 to 5 are not transmitting network traffic to other hubs through the Stacking Cable Isolated Hub 1 Stacking Cable Isolated Hub 2 Management Isolated Hub 3 Channel Isolated Hub4 Data Channel solated Hu Tom cog 5 Figure 3 3 Stacking Isolated Hubs with Straight through Category 5 Twisted pair Cable If Hub 12TX units are isolated they can still be managed via the management channel embedded in the Stacking Cable even though the hubs are not transmitting or receiving network traffic through the Stacking Cable This allows any hub to be isolated from the stack s central collision domain but still enables them to be managed by a Hub 12TXM through the management channel Setting Up Network Connections 3 7 HP 100Base T Hubs Installation and Reference Guide Extending the Network with Alternate Connections You can extend your network by connecting any of the hubs in a stacked system to other compatible hubs via the Switch Port Module In the diagram below a standalone hub is connected to hub 3 in the stacked system using the Switch Port Module However remember that the Hub 12TXM agent can only manage hubs connected to it through the Stacking Cable
31. file to download Download Mode You can download to permanent flash ROM or temporary storage in RAM for test purposes However if you download to temporary memory this firmware will be lost upon power off To update new agent firmware for permanent use it must be downloaded to flash ROM Start Download _ Command to start the download Table 4 23 TFTP Download Menu Configuring the System 4 37 HP 100Base T Hubs Installation and Reference Guide Xmodem Download Enter Xmodem Download under the Download menu to download firmware to the hub The Xmodem protocol is used to transfer binary files over a PC connection i e using terminal emulation or modem access software Specify the download mode and select Start Download Open the file transfer utility in your terminal emulation or modem access program specify the filename and then start file transfer When transferring files from your computer be sure you specify Send or Upload file The file should be an AdvanceStack Hub 12TXM bin file from HP otherwise the agent will not accept it Also be sure that you have already set the required bootup option for the target hub under the Hub Configuration menu File transfer status is indicated by messages at the bottom of the screen Firmware is first loaded into a temporary buffer If you selected download for permanent use it will then be transferred to nonvolatile memory After you finish transferring the
32. firmware the agent will be reset and you will have to log back into the configuration program again The following screen shows an example of the Xmodem Download menu 4 38 Configuring the System HP 100Base T Hubs Installation and Reference Guide HP J3233B AdvanceStack 100Base TX Hub 12TXM Xmodem Download Back to Previous Menu Download Mode TEMPORARY Start Download Back to previous menu Enter to confirm lt Ctrl Z gt to back to Main Menu Figure 4 30 Xmodem Download Menu Menu items are briefly described in the following table Field 4 1 DBDesciplon 1 Download Mode You can upload to permanent flash ROM or temporary storage in RAM for test purposes only Start Download Initiate the file transfer process Table 4 24 Xmodem Download Menu Console Security The Console Security menu enables both the setting of user passwords and the console timeout Changing User Passwords The VT 100 console interface includes two fixed user types Admin and Guest The access privilege is Read Write for administrator and Read Only for guest The default user names and passwords are blank The administrator is the only user with write access for agent parameters You should therefore assign a password to administrator as soon as possible and store it in a safe place Console Timeout This function instructs the configuration program to automatically lock the console if no keyboard i
33. from the system Issue a trap message if anyone attempts to access the configuration program without the proper user name and password Table 4 8 SNMP Configuration Menu Send Authentication Fail Trap 4 16 Configuring the System HP 100Base T Hubs Installation and Reference Guide Configuring SNMP Communities Access to the hub s on board management agent via network management software is controlled with community strings Use the SNMP Communities command to edit community strings and access rights as shown below HP J3233B AdvanceStack 100Base TX Hub 12TXM SNMP Communities Back to Previous Menu Community Name Access Status 1 public READ WRITE ENABLED 2x READ ONLY DISABLED iet READ ONLY DISABLED 4 READ ONLY DISABLED 5 READ ONLY DISABLED Back to previous menu Enter to confirm lt Ctrl Z gt to back to Main Menu Figure 4 9 SNMP Communities Menu Menu items are briefly described in the following table Field Description Community Name A community entry authorized for management access Access Management access is restricted to Read Only or Read Write Status The current entry can be ENABLED or DISABLED Table 4 9 SNMP Communities Menu Configuring the System 4 17 HP 100Base T Hubs Installation and Reference Guide Configuring IP Trap Receivers When the hub experiences an unusual event a message is issued to all listed network managers Networks compliant w
34. is not detected the hub will automatically detect the current type Values 802 3 Ethernet Il SNAP 802 2 This address is composed of Net Number which identifies the IPX network number for the connected slot This can be enabled or disabled This command saves the IP address for the selected segment to nonvolatile memory and makes it effective immediately Table 4 7 Network Configuration Menu Configuring the System 4 15 HP 100Base T Hubs Installation and Reference Guide Configuring the SNMP Agent When using SNMP based network management software you must specify basic parameters that control access to the system Use the SNMP Configuration menu to display the following screen parameters HP J3233B AdvanceStack 100Base TX Hub 12TXM SNMP Configuration SNMP Communities IP Trap Receivers IPX Trap Receivers Send Authentication Fail Trap NO Back to previous menu Enter to confirm lt Ctrl Z gt to back to Main Menu Figure 4 8 SNMP Configuration Menu Menu items are briefly described in the following table Fed une Description eru i esi SNMP Communities The community strings authorized for trap management access All community strings used for IP and IPX Trap Receivers must be listed in this table IP Trap Receivers IP management stations selected to receive trap messages from the system IPX Trap Receivers IPX management stations selected to receive trap messages
35. menu to download firmware updates into the hub You may upgrade firmware from a server attached to the local network or remotely via a serial link using TFTP over SLIP Specify the IP address for the TFTP server the filename and the download mode The download file should be an AdvanceStack Hub 12TXM bin file from HP otherwise the 4 36 Configuring the System HP 100Base T Hubs Installation and Reference Guide agent will not accept it Also be sure that you have already set the required bootup option for the target hub under the Hub Configuration menu Download status is indicated by messages at the bottom of the screen Firmware is first loaded into a temporary buffer If you selected download for permanent use it will then be transferred to nonvolatile memory After you download the firmware the agent will be reset and you will have to log into the VT 100 console interface again The following screen shows an example of the TFTP download menu HP J3233B AdvanceStack 100Base TX Hub 12TXM TFTP Download Download Server IP 203 70 236 52 Download Filename bin Download Mode PERMANENT Start Download Back to previous menu Enter to confirm lt Ctrl Z gt to back to Main Menu Figure 4 29 TFTP Download Menu Menu items are briefly described in the following table Download Server IP IP address of a TFTP server TFTP stands for Trivial File Transfer Protocol Download Filename The bin
36. method dynamically changes the way it handles data based on the current error rate These switching alternatives start at standard cut through for a clean data environment change to fragment free cut through for a moderate error rate and then progress to store and forward for a highly contentious environment By using this method the Switch Port Modules deliver the best networking performance under any environment Moreover in addition to using adaptive switching to optimize throughput these modules also support back pressure to eliminate frame loss after the switch port s buffers that store incoming packets fill by blocking unwanted traffic from being passed onto a segment 1 12 Product Overview Chapter 2 Installing the System This chapter describes how to install the HP AdvanceStack 100Base T Hubs and establish network connections You may install this hub on any level surface e g a table or shelf or in a standard equipment rack However please take note of the following minimum site requirements before you begin Note The HP 100Base T Hubs do not support wall mounting Pre Installation Requirements Before you start actual hardware installation make sure you can provide the right operating environment including power requirements sufficient physical space and proximity to other network devices that are to be connected Verify the following installation requirements e Power requirements 100
37. to 240 VAC 10 at 50 to 60 Hz The hub s power supply automatically adjusts to the input voltage level e The hub should be located in a cool dry place with at least 10 cm of space at the front and back for ventilation e Place the hub out of direct sunlight and away from heat sources or areas with a high amount of electromagnetic interference e If you intend to mount the hub in a rack make sure you have the mounting screws brackets bolts and nuts and the correct tools e Be sure the network cables and connectors needed for installation are available Installing the System 2 1 HP 100Base T Hubs Installation and Reference Guide Hardware Installation This hub is suitable for desktop or rack mount installation A good location is at the center of all the devices you want to link close to the extended network and near a power outlet These hubs can be stacked with other hubs using a mounting rack or directly on top of one another Refer to the sections on Stacking Hubs without a Rack or Mounting Hubs in a Rack for a description of these methods If you don t want to stack the hub with other hubs now or if you plan to use the hub in a standalone configuration skip this step and proceed to Connecting the Hub System Stacking Hubs without a Rack You do not need the rack mount kit if you are not mounting the hub in a rack Keep the mounting brackets and Screws however for possible future use The hub
38. to confirm lt Ctrl Z gt to back to Main Menu HP J3233B AdvanceStack 100Base TX Hub 12TXM Stack Statistics Back to Previous Menu Refresh Statistics Frames D 4928 Bytes H 794031 Collisions 4 5 Alignment Errors CRC Errors Total Errors Symbol Errors Stack statistics can be used to check on the general health of your hardware and network connections If any of the error indications are extremely high for example collisions or CRC errors you should take appropriate measures to resolve the problem Displayed items are briefly described in the following table Figure 4 22 Stack Statistics Menu Field Description Frames Number of frames passing through the stack Bytes Number of bytes passing through the stack Collisions Number of simultaneous node transmissions detected by the stack Alignment Errors Number of mis synchronized data packets detected by the stack CRC Errors Total Errors Symbol Errors Number of Ethernet Cyclic Redundancy Check errors detected by the stack Total number of errors including CRC alignment FramesTooLong ShortEvents LateEvents Jabber and DataRateMismatches detected in the stack Number of symbol errors i e code group errors including collision artifacts or transmission errors Note that these errors are unique to 100Mbit s analog signals Table 4 18 Stack Statistics Menu 4 30 Configuring the System HP 100Base T Hubs Installation and Re
39. with optional Switch Port Modules provides considerable flexibility when setting up network connections Special Architecture Used for the HP 100Base T Hubs Isolation Architecture The HP 100Base T Hubs support stack connections or isolation connections for each hub You can choose to attach a hub to the stack collision domain or leave it isolated except for the management channel This type of architecture makes the system more flexible provides better traffic load sharing and data protection improves network bandwidth utilization and simplifies troubleshooting Carefully plan your network setup to make this architecture work well for your system Form a common domain for devices that need to frequently communicate with each other by attaching them to the stack and isolate hubs containing heavy traffic that do not need to communicate with the stack but need to be managed In this way you can arrange network Setting Up Network Connections 3 1 HP 100Base T Hubs Installation and Reference Guide resources to balance traffic and thereby increase overall network efficiency To combine the separate collision domains into an interconnected network attach each hub to a switch or similar device such as one of HP s AdvanceStack switches or use the optional Switch Port Modules Stacking Cable Management Channel Hub ID Setting To manage other hubs by an SNMP agent i e Hub 12T XM the hubs must all be connected by the S
40. you can access after logging into the system are described in the following section Configuring the System HP 100Base T Hubs Installation and Reference Guide Using the VT 100 Console Interface The Hub 12TX Hub 12TXM and Hub 24TX all provide a menu driven VT 100 console interface The VT 100 console interface differs for the Hub 24TX Hub 12TX and the Hub 12TXM The connection types allowed and options provided are summarized below e The Hub 24TX is designed as a manageable hub without an on board SNMP agent Therefore when an SNMP agent i e the Hub 12TXM is connected to this hub via the Stacking Cable its Console Port will be disabled and configuration must be carried out using the Hub 12TXM However if this hub is not connected to an agent you can configure it by making a direct connection to the Console Port e The Hub 12TX is also designed as a manageable hub without an on board SNMP agent Like the Hub 24TX it can be configured by being connected to a Hub 12TXM in a stack or if there is no agent by a direct connection to the Console Port e When configuring a Hub 12TXM and connected stack you can use a direct connection to the Console Port use a Telnet connection from a networked computer or use a standard modem connection from a remote computer System Configuration for the Hub 24TX With the VT 100 console interface you can carry out basic configuration on the attached hub such as setting the hub
41. your working platform There are three valid connection types to the hub Out of band connection The workstation normally within the vicinity of the hub is directly connected to the Console Port on the HP 100Base T Hub e Telnet connection The workstation is connected to a remote Hub 12TXM via a networked Telnet connection e Modem connection The workstation is connected to a remote Hub 12TXM hub via modems The physical setup and connections required for on board configuration are described in detail under Direct Connection Network Connection and Remote Connection in this chapter To open the HP 100Base T Hubs VT 100 console interface do the following 1 Activate an HP 100Base T Hub VT 100 console interface from a local console via Telnet or via modem connection as described below From a local console When connecting a PC to the hub use a VT 100 terminal emulation package to connect to the specific Com port that is attached to the hub Configure the connection for 9600 baud 8 data bits no parity bits 1 stop bit and no flow control Then press Enter Configuring the System 4 5 HP 100Base T Hubs Installation and Reference Guide From a Telnet connection Telnet into the target hub using its assigned IP address From a remote modem connection Use a VT 100 terminal emulation package to connect to the Com port that is attached to the modem Configure the connection for 9600 baud 8 data bits no pa
42. 000 000000 000000 public DISABLED 3 00000000 000000 000000 public DISABLED 4 00000000 000000 000000 public DISABLED 5 00000000 000000 000000 public DISABLED 6 00000000 000000 000000 public DISABLED 7 00000000 000000 000000 public DISABLED 8 00000000 000000 000000 public DISABLED 9 00000000 000000 000000 public DISABLED 10 00000000 000000 000000 public DISABLED Back to previous menu Enter to confirm lt Ctrl Z gt to back to Main Menu Figure 4 11 IPX Trap Receivers Menu Menu items are briefly described in the following table Field Description IPX Address IPX address of the trap receiver Provide network number and MAC address components Community Name The community string required for trap management access Status The status of the current entry can be set to ENABLED or DISABLED Table 4 11 IPX Trap Receivers Menu Configuring the System 4 19 HP 100Base T Hubs Installation and Reference Guide Configuring Hub Parameters Select Hub Configuration under the System Configuration menu to configure any hub in the stack This menu is used to configure the hub and SNMP agent Use the following menu to select the required hub or to change the numeric identifier for any hub in stack HP J3233B AdvanceStack 100Base TX Hub 12TXM Hub Configuration Hub 1 Configuration Hub 2 Configuration Hub 3 Configuration Hub 4 Configuration Hub 5 Configuration Hub ID Configuration
43. 14 Exp Slot Port Configuration Menu Table 4 15 Port Intrusion Control Menu Table 4 16 Backup Links Menu Table 4 17 Statistics Menu Table 4 18 Stack Statistics Menu Table 4 19 Hub Statistics Window Table 4 20 Port Statistics Menu Table 4 21 Exp Slot Port Statistics Menu Table 4 22 Download Menu Table 4 23 TFTP Download Menu Table 4 24 Xmodem Download Menu Table 4 25 Console Security Menu Table 4 26 IP Ping Test Menu Table 4 27 IPX Ping Test Menu Table 4 28 Link Test Menu Table 5 1 Power Indicator Table 5 2 Switch Port Module Indicator Table 5 3 Switch Port Module Indicators Table 5 4 Managed Indicator Table 5 5 Management Mode Indicators Table 5 6 Console Indicator Table 5 7 Isolated Indicator Table 5 8 Utilization Indicators Table 5 9 Collision Indicators Table 5 10 Link Traffic Indicators 4 9 4 10 4 12 4 13 4 14 4 15 4 16 4 17 4 18 4 19 4 22 4 24 4 25 4 27 4 28 4 29 4 30 4 32 4 34 4 35 4 36 4 37 4 39 4 40 4 42 4 43 4 44 5 3 5 4 5 4 5 4 5 5 5 6 5 6 5 8 xviii Contents HP 100Base T Hubs Installation and Reference Guide Table 5 11 Partition Disable Indicators Table 5 12 Diagnostic Results Table 5 13 Diagnostic Indicators Table B 1 RJ 45 Pin Assignments Table B 2 DB9 Port Pin Assignments Table B 3 RS 232 C Null Modem Cable Connection from Hub s 9 Pin Serial Port to PC s 9 Pin COM Port Table B 4 Minimum Cable Connection from Hub s 9 Pin Serial Port to PC s 9
44. 3 sec System Name R amp D Stack Contact Chris Location 2nd floor Back to previous panel Enter to confirm lt Ctrl Z gt to back to Main Menu Figure 4 5 System Information Menu 4 12 Configuring the System HP 100Base T Hubs Installation and Reference Guide Menu items are briefly described in the following table Field Description System Description Model name of the hub unit System Object ID Object identifier as defined in MIB Il System Up Time Length of time the Hub 12TXM management agent has been running System Name Name assigned to the hub system Contact Contact person for the system Location Specifies area or location where the system resides Table 4 5 System Information Menu System Configuration Choose System Configuration from the Main menu to display and modify all the network SNMP agent hub and port parameters in the Hub 12TXM stack The configuration options available are displayed in the following example HP J3233B AdvanceStack 100Base TX Hub 12TXM System Configuration Network Configuration SNMP Configuration Hub Configuration Port Configuration Port Intrusion Control Backup Links Set management values to factory defaults Back to previous menu lt Enter gt to confirm lt Ctrl Z gt to back to Main Menu Figure 4 6 System Configuration Menu Configuring the System 4 13 HP 100Base T Hubs Installation
45. 70 236 54 IPX Frame Type IPX 802 2 FRAME Subnet Mask 255 255 255 0 Internal IPX Network AC B3 00 31 Gateway IP 203 70 236 254 IPX Protocol DISABLED Serial IP 373203 1 o OAS T AE d IP Protocol ENABLED Update EEPROM Back to previous menu Enter to confirm lt Ctrl Z gt to back to Main Menu Figure 4 7 Network Configuration Menu 4 14 Configuring the System HP 100Base T Hubs Installation and Reference Guide Menu items are briefly described in the following table EENIUHEEESEESVEGCTESGEREE Description o TENERE TY IP Configuration The hub system may be run on SNMP protocol over UDP IP transport protocol In this environment all systems on the Internet such as network interconnection devices and management stations are assigned an IP address IP Address IP address of this device Subnet Mask Subnet mask of this IP network This mask identifies the host address bits used for routing to specific subnets Gateway IP Gateway used in passing trap messages from the hub agent to the management station Serial IP IP address used to access hub configuration via an out of band SLIP connection to the Console Port IP Protocol This can be enabled or disabled IPX Configuration IPX Frame Type The selected format used on the LAN i e this type is that used by the IPX network where the Internal IPX Network IPX Protocol Update EEPROM hub is installed If the specified frame type
46. 8 Managed 5 4 Management Mode 5 4 Master 5 4 Partition Disable 5 8 2 Index Port status 5 7 Power 5 3 Rx 5 4 Tx 5 4 Utilization 5 6 Installation Mounting hubs in a rack 2 3 Stacking hubs without a rack 2 2 Installing a Switch Port Module 2 7 Installing an SNMP backup agent 2 13 Installing the system 2 1 IP Trap Managers 4 18 IPX Trap Managers 4 19 Isolation architecture 3 1 L LED indicators 5 2 Link 5 8 Link indicator 2 14 Management agents 3 3 Maximum Segment Length 2 10 Modem configuration C 1 N Network configuration 4 14 Network connection MDI cascade port 2 6 MDI X station port 2 4 Verifying 2 14 Network connections 5 11 Network managment software 1 4 O On board configuration program Configuring the remote site 4 4 HP 100Base T Hubs Installation and Reference Guide Remote configuration methods 4 4 Setting communication parameters 4 3 P Package contents i Partition 4 24 Partition 5 9 Pin assignments Crossover cable B 1 Hub s 9 pin serial port to modem s 25 pin DCE port B 5 Hub s 9 pin serial port to PC s 25 pin DTE port B 4 Hub s 9 pin serial port to PC s 9 pin COM port B 3 RJ 45 port B 1 RS232 port B 2 Port attachment 10 100BASE TX 2 7 100BASE FX e 2 7 Port intrusion control 4 26 Port parameters 4 23 Port statistics 4 33 Port status Verifying 2 14 Ports Console Port 5 12
47. AD SLSR Bese TFCEMHBVES OBI HASRSU ZEE S KDBRENSCEMBVET E 10 Safety and Regulatory Statements HP 100Base T Hubs Installation and Reference Guide European Community Canada Australia This equipment complies with ISO IEC Guide 22 and EN55022 Class A with unshielded cables and EN55022 Class B with shielded cables Note With unshielded cables this is a Class A product In a domestic environment this product may cause radio interference in which case the user may be required to take adequate measures This product complies with Class A Canadian EMC requirements This product complies with Australia New Zealand EMC Class A requirements Safety and Regulatory Statements E 11 HP 100Base T Hubs Installation and Reference Guide Declaration of Conformity The following Declaration of Conformity for the HP J3233B J3234B J3272A AdvanceStack Hub 12TX Hub 12TXM Hub 24TX and Switch Port Modules complies with ISO IEC Guide 22 and EN 45014 The declaration identifies the product the manufacturer s name and address and the specifications that are recognized in the European community DECLARATION OF CONFORMITY according to ISO IEC Guide 22 and EN45014 Manufacturer s Name Hewlett Packard Company Manufacturer s Address 8000 Foothills Blvd Roseville CA 95747 5502 U S A declares that the product Product Name HP AdvanceStack 100Base T Hub 12 TXM HP AdvanceStack 100Base T Hub 12 TX HP AdvanceSt
48. Base T Hubs Installation and Reference Guide Rebooting the Hub Use the Restart the Agent command under the Main Menu to reset the agent and all devices managed by the agent The hardware configuration for the agent and system tests are displayed on the VT 100 console similar to the messages shown in the following example SYSTEM CONFIGURATION EPROM size 128KB configured Flash ROM size 512KB EEPROM size 8KB DRAM size 4MB Input FIFO 1024 bytes Output FIFO 1024 bytes SYSTEM TESTS Console I O test SS amp 0123456789 lt gt GABCDEFGHIJKLMNOPORSTUVWXYZ _ abcdefghijklmnopqrstuvwxyz Flash ROM test Checksum test passed EEPROM header test Checksum test passed DRAM test Address ripple test passed Walking 0 test passed Walking 1 test passed Refresh test passed Output FIFO testing OK SIZE 1024 bytes Input FIFO testing OK SIZE 1024 bytes SYSTEM TESTS COMPLETED Figure 4 36 Screen Messages for Rebooting the Hub Exiting the VT 100 Console Interface Use the Exit command under the Main Menu to close the VT 100 console interface Note that this command and lt Ctrl E gt have the same effect Configuring the System 4 45 Chapter 5 Hardware Reference Before connecting any network device to this hub please review Chapter 2 for information on system installation Chapter 3 for a brief look at common network architectures and Chapter 4 for inform
49. DCD 2 RXD 3 TXD 4DTR HERB 6DSR 7RTS 8CTS ORI uL Table B 5 Full Pin Connection from PC s 25 Pin DTE Port 4 RTS 3 TXD 2 RXD 6 DSR 7 SGND 20 DTR 5 CTS 8 DCD 22 RI Hub s 9 Pin Serial Port to PC s 25 Pin DTE Port Hub s 9 Pin Serial Port 1DCD 2 RXD 3TXD 4 DTR 5 SGND 6 DSR 7 RTS 8CTS 9RI Cable Wiring 4 RTS ER NN 2 RXD LR NN 7 SGND 20 DTR 5 CTS soo 22 RI Table B 6 Three Pin Connection from Hub s 9 Pin Serial Port to PC s 25 Pin DTE Port Pin Assignments HP 100Base T Hubs Installation and Reference Guide Hub s 9 Pin Serial Port to Modem s 25 Pin DCE Port ENENRTUTDINEEMMMNMMNMMMEESJSSOQ D dem 25 Pin SerialPort CEPrt Table B 7 Hub s 9 Pin Serial Port to Modem s 25 Pin DCE Port Pin Assignments Pin Assignments B 5 Appendix C Modem Configuration Before installing the modems one attached to the hub s console port and one attached at the user end to a terminal or PC configure them by connecting one at a time to a PC or terminal and issuing the appropriate AT command Then install the modems in the appropriate locations one connected to the Hub 12TXM and one connected to a PC or terminal The modems listed in this appendix have been tested and found to work properly with the Hub 12TXM using the initialization strings shown in the following tables
50. HP J3248A for 100Base FX Hardware Reference 5 3 HP 100Base T Hubs Installation and Reference Guide LED Color State Indication 100 Green ON Port is set at 100Mbit s OFF Port is set at 10Mbit s FDX Green ON Port is set for full duplex operation OFF Port is set for half duplex operation Yellow BLINKING Packet collisions blinking is proportional to the collision ratio Link Green Port has a valid network connection Tx Green UNS Port is transmitting packets blinking is proportional to traffic passing through the port Port is receiving packets blinking is proportional to traffic passing through the port 1 Only present on the 10 100TX Switch Port Module Table 5 3 Switch Port Module Indicators Rx Green BLINKING Managed Color Green Function Indicates a valid connection between hub and ML Pee eee 7 has a valid connection with an Hubagentisactive agent is active agent through the Stacking Port OFF Hub is in a standalone N A configuration or does not have a valid connection to an agent BLINKING Hub agent has failed Table 5 4 Managed Indicator Management Mode Indicators Color Green Labels Master Backup Function Displays status of the on board management agent LED Condition Indication Master _ Backup ON OFF SNMP agent is functioning as the primary agent OFF ON SNMP agent is functioning as a backup agen
51. Hubs The HP 100Base T Hubs provide the following key features Stack isolation architecture allowing the network to be split into multiple collision domains Supports fault tolerant configuration by allowing port backup links and agent backup Supports management functions via SNMP Supports VT 100 console management Discovery and mapping features using HP AdvanceStack Assistant The VT 100 console agent supports nearly any network environment by providing management options via SNMP IP and SNMP IPX Provides security features including port intrusion protection as well as password protection for out of band access or Telnet network access Hot swap function allows you to add remove hubs in the stack without disrupting communications SNMP backup agents 1 6 Product Overview HP 100Base T Hubs Installation and Reference Guide Features of the HP 100Base T Hubs Features of the HP AdvanceStack 100Base T Hubs are General Features Basic Hub Functions Outstanding Performance e Transmits all incoming frames to the other hubs in the stack collision domain using the Stacking Cable Automatically partitions and reconnects devices which experience excessive collisions Jabber lockup protection provided by disabling any port that receives 64 Kbytes of continuous data and re enabling the port after the condition improves Total bandwidth of up to 500 Mbit s The Stacking Cable contains a high speed management cha
52. If the Link status indicator is not functioning properly or you experience any other difficulties in setting up the switch refer to Appendix A Verifying System Operation Verify that all attached devices have a valid connection The hub monitors link status for each port If any device is properly connected to the hub and transmitting a link beat signal the Link indicator lights for the corresponding port If the Link indicator fails to light when you connect a device to the hub check the following items Besure the media cable is properly attached to the connected device and the hub Verify that the cable connector snaps into place when attached e See if the media cable is functioning properly by using it for another port and attached device that displays valid indications when connected to the network Installing the System HP 100Base T Hubs Installation and Reference Guide e Verify that you have not exceeded the specified limits for any attached media type as summarized in the following table Media Type Maximum Length meters Twisted Pair 100 Fiber Optic 412 single switched link at half duplex 2000 single switched link at full duplex 160 with Class I repeater TX FX links only 131 with Class I repeater if any T4 links present 208 with 1 Class II repeater TX FX links only 111 with 2 Class II repeaters TX FX links only Table 2 5 Maximum Cable Length e Ifa computer
53. Module Provides one SC type connector for 100Base FX connection Transmission speed is always 100 Mbit s and transmission mode is manually set to half or full duplex using the VT 100 console interface Network Management Software HP AdvanceStack Assistant This Windows and Unix based network management software discovers the HP 100Base T hubs and displays device symbols in a Topology View a network map that shows the placement of the hub in relation to other devices on the same stack segment or subnetwork 1 4 Product Overview HP 100Base T Hubs Installation and Reference Guide HP AdvanceStack Assistant should be installed on the network management station designated to manage the HP 100Base T stack Note that you need a Hub 12TXM in your collision domain to use HP AdvanceStack Assistant via the console port The workstation may communicate with the stack via a network connection or from a remote site using SLIP over TCP IP If isolated architecture is used the network management station should be connected to the same segment as the SNMP management agent 1 e Hub 12TXM The minimal configuration for a PC network management station includes a 66MHz Intel 486 PC platform with 24 Mbytes of RAM and 30 Mbytes available space on the hard drive a VGA display and Windows 95 or Windows NT 3 51 Product Overview 1 5 HP 100Base T Hubs Installation and Reference Guide Distinguishing Features of the HP 100Base T
54. Server 4 36 Xmodem Download 4 38 Console Security 4 39 Connectivity Test 4 41 Rebooting the Hub 4 45 Exiting the VT 100 Console Interface 4 45 Chapter 5 Hardware Reference 5 1 Indicator Panel 5 2 Power 5 3 Exp Slot 5 3 Managed 5 4 Management Mode Indicators 5 4 Hub ID 5 5 Console 5 5 Contents xiii HP 100Base T Hubs Installation and Reference Guide Isolated Utilization Collision 96 Port Status Indicators Link Traffic Partition Disable Diagnostic Test Indicators Network Connections Station Ports Cascade Port Console Port Rear Panel Components Power Socket Stacking Ports In Out Appendix A Troubleshooting Diagnosing Hub Indicators System Diagnostics Power and Cooling Problems Installation Transmission Mode Cabling LAN Adapters Physical Configuration System Integrity Appendix B Pin Assignments RJ 45 Port DB9 Serial Port Pin Description Hub s 9 Pin Serial Port to PC s 9 Pin COM Port Hub s 9 Pin Serial Port to PC s 25 Pin DTE Port Hub s 9 Pin Serial Port to Modem s 25 Pin DCE Port 5 10 5 11 5 11 5 11 5 12 5 13 5 13 5 14 5 14 5 14 A 1 A 1 A 2 A 2 A 2 A 3 A 3 A 4 B 1 B 1 B 2 B 3 B 4 B 5 xiv Contents HP 100Base T Hubs Installation and Reference Guide Appendix C Modem Configuration C 1 Appendix D Product Specifications D 1 Product Specifications D 1 Appendix E Regulatory Statements E 1 Mounting Precautions E 1 Power Precautions E 2 S
55. TX Switch Port Module only Automatically learns MAC addresses to build a routing information database Automatically filters local traffic Transparent to all higher level protocols Product Overview 1 9 HP 100Base T Hubs Installation and Reference Guide Data Switching with the Switch Port Modules Switching Technology The Switch Port Modules that plug into the Expansion Slot on the front panel of the AdvanceStack Hub 12TX Hub 12TXM use advanced switching techniques to provide a high speed network backbone Each Switch Port Module acts as a two port Ethernet switch that segments the stack from the extended network The module scans the destination address from the packet header searches the routing table provided for the incoming port and forwards the packet only if required often before fully received A learning function stores the address and corre sponding segment identifier of each incoming and outgoing packet in a routing table This information is subsequently used to filter packets whose destination address is on the same segment as the source address This confines network traffic to its respective domain reducing the overall load on the network Configuration Options for the Switch Port Modules The 10 100Base TX and 100Base FX media both support full duplex operation The Switch Port Modules can be connected to a subnetwork or directly to a server or key workstation or to an isolated hub in the stack In
56. U HEWLETT PACKARD Installation and Reference Guide HP J3233B HP J3234B HP J3272A HP J3247A HP J3248A HP AdvanceStack 100Base T Hubs and Switch Modules Copyright 1998 Hewlett Packard Company All Rights Reserved Reproduction adaptation or translation without prior written permission is prohibited except as allowed under the copyright laws Publication Number 5967 2285 Edition 1 April 1998 Applicable Product HP J3233B AdvanceStack 100Base T Hub 12TXM HP J3234B AdvanceStack 100Base T Hub 12TX HP J3272A AdvanceStack 100Base T Hub 24TX HP J3247A AdvanceStack 10 100TX Switch Port Module HP J3248A AdvanceStack 100FX Switch Port Module Disclaimer The information contained in this document is subject to change without notice HEWLETT PACKARD COMPANY MAKES NO WARRANTY OF ANY KIND WITH REGARD TO THIS MATERIAL INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE Hewlett Packard shall not be liable for errors contained herein or for incidental or consequential damages in connection with the furnishing performance or use of this material Hewlett Packard assumes no responsibility for the use or reliability of its software on equipment that is not furnished by Hewlett Packard Warranty See the warranty booklet included with the product A copy of the specific warranty terms applicable to your Hewlett Packard product and replacement parts can be obtained fro
57. XM Port Statistics 1 2 3 4 Se 0 CT 78 59 10 di 12 Exp Slot Back to previous menu Enter to confirm lt Ctrl Z gt to back to Main Menu Figure 4 25 Port Statistics Port Selection Menu Statistics for Hub Ports Statistics for hub ports cover a wide range of Ethernet variables If any of the error indications are extremely high there may be a problem with the port the attached device or the network cabling The System Diagnostics section in Appendix A provides help on troubleshooting The Port Statistics window is shown below Configuring the System 4 33 HP 100Base T Hubs Installation and Reference Guide Screen statistics are not j HP J3233B AdvanceStack 100Base TX Hub 12TXM automatically refreshed from the agent Select Refresh Statistics Port Statistics to update the displayed values The values displayed have been accumulated since the last ub Pr Refresh Statistics Position 1 system reboot Port ID 1 Readable Frames 0 Late Events 0 Readable Octets 0 Data Rate Mismatches 0 CRC Errors 0 Auto Partitions 0 Alignment Errors 0 Total Errors 1 0 Frames Too Long 0 Last Source Address LSA 000000 000000 Short Events 0 LSA Changes 0 Runts 0 Symbol Errors 0 Collisions 0 Back to previous menu Enter to confirm lt Ctrl Z gt to back to Main Menu Figure 4 26 Port Statistics Menu Displayed items are briefly described in the following table Field Description H
58. ack 100Base T Hub 24TX Model Number HP J3233B HP J3234B HP J3272A Accessories HP J3247A HP J3248A conforms to the following Product Specifications Safety EN60950 1992 A1 A2 TEC 950 1991 A1 A2 EMC EN 55022 1994 CISPR 22 1993 class A EN50082 1 1992 TEC 1000 4 2 1995 4 kV CD 8 kV AD TEC 1000 4 3 1995 3 V m IEC 1000 4 4 1995 1 kV power line 0 5 kV signal line ENV 50141 1993 3Vrms Supplementary Information The product herewith complies with the requirements of the Low Voltage Directive 73 23 EEC and the EMC Directive 89 336 EEC and carries the CE marking accordingly LEDs in this product s are Class 1 in accordance with EN60825 1 1994 The J3247A and J3248A are accessories for the J3233B and J3234B Tested with Hewlett Packard Co products only Roseville March 30 1998 ak Quality Manager European Contact Your local Hewlett Packard Sales and Service Office or Hewlett Packard GmbH Department TRE Herrenberger Strasse 130 D 71034 Boblingen FAX 49 7031 14 3143 E 12 Safety and Regulatory Statements Appendix F Product Support Services World Wide Web Hewlett Packard offers support through the use of automated electronic services including e World Wide Web e HP Network Phone In Support NPS e HP FIRST FAX Retrieval Service http www hp com go network_city From this web site you can view information about HP s complete networking product line If
59. addition to partitioning an overloaded network they provide a connection between legacy 10Base T networks and the newer generation 100Base TX and can be configured to operate in either full duplex or half duplex data transfer mode to support the interconnection requirements of other high speed devices These modules perform cut through switching which can direct a packet according to the destination address scanned from the packet header This technique results in packet transmission at near zero latency Product Overview HP 100Base T Hubs Installation and Reference Guide Switching Methods As a device functioning on the media access control MAC layer the Switch Port Modules are protocol independent and therefore compatible with TCP IP NetWare DECnet and XNS protocols They can provide a connection between conventional 10Base T and high speed 100Base TX networks or can serve as a bridge in a 100Base TX or 100Base FX environment Moreover where traditional 100Base TX networks restrict the maximum distance between end nodes to 205 meters these modules break down this barrier By breaking your network into smaller and more manageable segments each linked to the larger network with a Switch Port Module the maximum distance for communications between end nodes is unlimited depending on the specific timing requirements of your network applications Traditional bridges and routers use a switching method called store and fo
60. afety Information E 3 Grounding E 3 Servicing E 3 Informations concernant la s curit E 4 Hinweise zur Sicherheit E 5 Considerazioni sulla sicurezza E 6 Consideraciones sobre seguridad E 7 Safety Information Japanese E 8 Safety Information Chinese E 9 Regulatory Statements E 10 FCC Class A Statement for U S A Only E 10 European Community E 11 Canada E 11 Australia E 11 Declaration of Conformity E 12 Appendix F Product Support Services F 1 World Wide Web F 1 HP FIRST Fax Retrieval Service F 1 Additional HP Support Services F 2 Glossary Index Contents xv HP 100Base T Hubs Installation and Reference Guide List of Figures Figure 2 1 Stacking Hubs without a Rack Figure 2 2 Mounting Hubs Using a Mounting Rack Figure 3 1 Attaching All Hubs to the Stack Collision Domain Figure 3 2 Linking Part of the Stack to the Stack Collision Domain with Straight through Category 5 Twisted pair Cable Figure 3 3 Stacking Isolated Hubs with Straight through Category 5 Twisted pair Cable Figure 3 4 Linking Stacked Hubs to Standalone Hubs via Stacking Cable and Cascaded Connections with Straight through Category 5 Twisted pair Cable Figure 3 5 Linking Stacked Hubs to a Network Management Station Figure 3 6 Linking Isolated Collision Domains in a Stacked System Figure 3 7 Connecting Remote Stacks using Switch Port Modules Figure 3 8 Connecting to the Extended Network Figure 4 1 Main Configuration Menu Hub 24TX only Figure 4 2
61. and Reference Guide Network Configuration SNMP Configuration Menu items are briefly described in the following table EE ON Configures IP IPX and SNMP parameters Configures communities as well as IP and IPX trap managers Hub Configuration Isolates attaches a hub to the stack sets bootup option and also sets protocol status for SNMP IP and SNMP IPX Port Configuration Disables enables a port shows link and partition state as well as allowing you to set the communication mode to full or half duplex for the Switch Module Port Intrusion Control Backup Links Sets up to 10 pairs of backup link ports Each pair contains a master and backup port The backup port is normally disabled When the master port fails the system disables the master port and enables the backup port to maintain the link Set management values to factory defaults Table 4 6 System Configuration Menu Changing the Network Configuration To access the Hub 12TXM system with network tools such as SNMP Telnet or TFTP you must configure the hub to use IP or IPX protocols Use the Network Configuration menu to display the following screen Sets the authorized entry address and defines response for detected intrusion Sets hub values back to factory defaults HP J3233B AdvanceStack 100Base TX Hub 12TXM Network Configuration Back to Previous Menu IP Configuration IPX Configuration IP Address 203
62. and innovative LAN network enhancement and management product series All hubs support a Fast Ethernet isolation architecture that enhances traffic management and network bandwidth utilization This system offers the network manager a wide range of flexible configuration options allowing you to increase your network s bandwidth tenfold or more In Product Overview 1 1 HP 100Base T Hubs Installation and Reference Guide addition the entire installation can be monitored via SNMP protocol through any network management station Moreover the HP 100Base T Hubs provide advanced network security features including Intrusion Protection which ensures that only designated workstations are able to transmit packets onto the network Management access via the out of band serial port or in band via Telnet is also password protected The basic components of this network system include Full Connectivity e Provides 12 or 24 RJ 45 MDI X 100Base TX Fast Ethernet shielded hub ports for connecting devices to the network using straight through shielded or unshielded twisted pair cable 1009 Cat 5 UTP or STP 1 RJ 45 MDD cascade port for connection to a switch eliminating the need for crossover cables Expansion Slot for optional Switch Port Modules which provide a connection to 10 100Base TX or 100Base FX via the Switch Port An architecture that supports stack isolation to enhance network traffic management and bandwidth utilizati
63. asingly improbable The Collision LEDs assist the network manager in monitoring the percentage of packet collisions occurring relative to the total packets received by the stack or hub if isolated Similar to Utilization LEDs the Collision LEDs have five numbers representing collision percentage When collisions reach a level marked on the LED display the corresponding LED lights up For example if packet collisions reach 1 the LED labeled 1 will light up However if collisions go beyond 1 e g 15 the LED labeled 15 and all the other LEDs before it i e 1 3 5 and 10 will also light up in rapid succession When more than 64 consecutive collisions occur on the cable segment connected to a port that port is automatically partitioned by the hub The hub automatically reconnects this port when a data packet longer than 512 bits normal is transmitted or received by the partitioned port without collision This applies to all STP station ports and the cascade port Port Status Indicators There are 12 or 24 pairs of port status indicators Each pair consists of a Link Traffic LED in the bottom row and Partition Disable LED in the top row The last pair displays status for both the 12MDI X 24MDI X and 12MDI 24MDI port either of which is currently in use Also note that port status for the Switch Port Module is displayed directly on the module as described in the section on Switch Port Module Indicator earlier in
64. ast Ethernet hub but also provides an SNMP based network management agent for monitoring and controlling various network components It can monitor up to five hubs connected to the same stack including itself through the Stacking Port connection This hub provides SNMP management for the connected stack via various Management Information Bases MIBs including MIB II several hub MIBs and a private MIB Product Overview 1 3 HP 100Base T Hubs Installation and Reference Guide Hub 24TX Switch Port Modules Fast Ethernet Stackable Hub with 24 100Base TX Ports The Hub 24TX conforms to the IEEE 802 3u hub specification It functions in the same way as the Hub 12TX except that it does not have a slot to accept the Switch Port Modules This hub can be used in a standalone configuration to form a simple LAN networking two to 24 computers using the RJ 45 hub ports It can also be stacked with other hubs through the Stacking Ports and connected to an SNMP management device e g the Hub 12TXM Similarly it can be monitored and controlled through in band or out of band channels 100Base TX HP J3247A AdvanceStack 10 100TX Switch Port Module Provides one RJ 45 MDI X port and one RJ 45 MDI port of which only one can be used at a time Transmission speed is automatically set to 10 or 100 Mbit s via auto sensing and the mode is set to half or full duplex via auto negotiation 100Base FX HP J3248A AdvanceStack 100FX Switch Port
65. ata Carrier Detected 104 RxD Received Data BA 103 TxD Transmitted Data 108 2 DTR Data Terminal Ready 102 SG Signal Ground Co nro N NO ony amp cpp gt NJN ce 107 DSR Data Set Ready 6 6 105 RTS Request to Send n 4 106 CTS Clear to Send 8 8 5 125 RI Ring Indicator 9 9 22 Table B 2 DB9 Port Pin Assignments B 2 Pin Assignments HP 100Base T Hubs Installation and Reference Guide Hub s 9 Pin Serial Port to PC s 9 Pin COM Port Hub s 9 Pin Cable Wiring Serial Port 1DCD ES SR 3 TXD 4 DTR cole 5 SGND 6DSR 7RTS Mum e red 8CTS 9RI T o m m PC s 9 Pin COM Port 1 DCD 2RXD sno 4DTR Hsmo 6 DSR 7RTS 8 CTS 9RI Table B 3 RS 232 C Null Modem Cable Connection from Hub s 9 Pin Serial Port to PC s 9 Pin Hub s 9 Pin Cable Wiring Serial Port 1 DCD 2 RXD See 3TXD 4 DTR 5 SGND eo Z RTS 8 CTS 9RI COM Port PC s 9 Pin COM Port 1DCD 2 RXD 3 TXD 4 DTR 5 SGND 6 DSR 7 RTS 8 CTS 9 RI iii Table B 4 Minimum Cable Connection from Hub s 9 Pin Serial Port to PC s 9 Pin Pin Assignments COM Port HP 100Base T Hubs Installation and Reference Guide Hub s 9 Pin Serial Port to PC s 25 Pin DTE Port Hub s 9 Pin Serial Port Cable Wiring 1
66. ation and Reference Guide When the 100Base FX link is set for the full duplex communications i e a dedicated connection cable length should not exceed 2 kilometers However when the link is set for half duplex communications i e a shared collision domain cable length should not exceed 412 meters IEEE 802 3u Also cable length could be limited further by timing constraints depending on what devices exist in the same shared collision domain See preceding section Maximum Segment Length In contrast to cascading devices through hub ports cascading through the Switch Port Module breaks up the collision domain The number of devices that can be cascaded is therefore theoretically unlimited However in practice the length of a cascade even one passing through Switch Ports as implemented in the modules may be limited by the time out requirements of the particular applications running over the network Setting the Communication Mode The 10 100TX and 100FX Switch Port Modules both support half and full duplex communications The 10 100Base TX module uses auto negotiation to determine the transmission mode for any new connection made Note that the module attempts to detect if the connecting device is using full duplex If it is not then the next test is for half duplex communication However if a connected device does not also support auto negotiation and a link cannot be established using half duplex i e the last state
67. ation on system configuration via the menu driven VT 100 console interface This chapter describes the hardware features of the HP 100Base T Hubs If you are not sure how to make network connections or do not understand the hub s indicators you should refer to this chapter The HP 100Base T Hubs provide a manageable 100 Mbit s Fast Ethernet stack It also supports optional network Switch Port Modules that can be used to connect the hub or stack to the extended network with 10 100Base TX or 100Base FX media types Moreover these Switch Port Modules serve to break up the local collision domain allowing you to overcome the limited network diameter normally associated with Fast Ethernet This hub provides a simple interface for configuring or monitoring network connections Figure 5 1 shows the Hub 12TXM front panel which includes a comprehensive array of indicators 12 RJ 45 station ports and an Expansion Slot for plugging in an optional Switch Port Module Each Hub 12TX Hub 12TXM model has similar indicators and other front panel components However note that the Management Mode LEDs Master and Backup are only present on the Hub 12TXM Lr Device Status r Network Status HEWLETT O BER AdvancoStack Hub 12TXM 100Base T Expansion Slot m 1 3 5 7 s i d ax sk Li x x x 1K nx aM E OAN
68. b 12TXM includes a network Expansion Slot on the front panel that supports connection to 10 100Base TX or 100Base FX The 10 100TX Switch Port Module acts as a two port switch that can forward and filter data frames at media speed One port is connected to the hub s internal repeater bus while the other port on the hub s front panel can be used to connect the hub to any compatible network device The optional Switch Port Modules include 2 6 Installing the System HP 100Base T Hubs Installation and Reference Guide Retain the face plate for possible future use Avoid running your cables near equipment that may generate electromagnetic interference 10 100Base TX HP J3247A AdvanceStack 10 100TX Switch Port Module 100Base FX HPJ3248A AdvanceStack 100FX Switch Port Module Note The 10 100TX Switch Port Module automatically adjusts to 10 or 100 Mbit s using auto sensing The Switch Port Modules are not hot swappable Be sure you power off the hub before installing or removing these modules Installing a Switch Port Module If you need to install a Switch Port Module take the following steps 1 Disconnect power to the hub 2 Remove the face plate on the Expansion Slot or a previously installed Switch Port Module by removing the two screws with a Phillips 1 e cross head screwdriver 3 Before opening the package that contains the module touch the bag to the hub casing to discharge any potential static elect
69. ble LEDs are off then all the tested components have successfully passed diagnostics 5 10 Hardware Reference HP 100Base T Hubs Installation and Reference Guide Network Connections Station Ports Cascade Port The front panel on the HP 100Base T Hubs provide the following network options e Connections to end node devices using RJ 45 station ports e Cascaded connection to a compatible switch or router using the cascade port e Extended network connection using the Switch Port Modules for 10 100Base TX or 100Base FX The hub has 12 or 24 RJ 45 station ports that can be used to connect end node devices e g file servers workstations or printers Be sure you have a Fast Ethernet LAN adapter installed in the device to be connected to the hub Then connect it to any available RJ 45 station port on the hub e 1X 12MDI X using straight through shielded or unshielded 100Q STP or UTP twisted pair cable A compatible switch or other network interconnection device can be attached to the 12MDI 24MDI cascade port Use straight through shielded or unshielded 100Q STP or UTP twisted pair cable to connect to an MDI X station port on the target device Refer to the section on Making a Connection via the MDI Cascade Port in Chapter 2 for a detailed description on cascading Note This device is a Class repeater and cannot be cascaded to another hub within the same collision domain Hardware Reference 5 11 HP
70. can be stacked anywhere there is a sufficiently large flat space such as on a table or desktop 1 Stick the self adhesive rubber foot pads that come with this package on each of the 4 hollow spaces located on the bottom of the first hub 2 Place the first hub on a firm and flat surface in the area where you want the stack to be installed 3 Attach the rubber feet on each hub before stacking them They cushion the hub against shock vibrations and provide space between each hub for ventilation Hub 12TX Hub 12TXM Hub 24TX Stack up to 5 hubs Figure 2 1 Stacking Hubs without a Rack 2 2 Installing the System HP 100Base T Hubs Installation and Reference Guide Mounting Hubs in a Rack Please comply with the following instructions to ensure that your hub is securely mounted in the rack Use a standard EIA 19 inch rack 2 Use a Phillips i e cross head screwdriver to attach the brackets to the sides of the hub 3 Position the hub in the rack by lining up the holes in the brackets with the appropriate holes on the rack and then use the supplied screws to mount the hub in the rack Hub 12TX Hub 12TXM Hub 24TX Stack up to 5 hubs Figure 2 2 Mounting Hubs Using a Mounting Rack Installing the System 2 3 HP 100Base T Hubs Installation and Reference Guide Connecting the Hub System Remember to label all your connections at bot
71. cket The power socket accepts AC power from 100 to 240V at 50 to 60 Hz The hub is equipped with a universal full range power source Hardware Reference 5 13 HP 100Base T Hubs Installation and Reference Guide Stacking Ports The unit has two Stacking Ports labeled In and Out for combining the hub with other compatible hubs to form a single hub stack up to a maximum of five hubs The Stacking Cable that comes with this package is used specifically for these ports Only hubs connected through the In and Out Stacking Ports can be managed by a network management agent Hub 12T XM In Using a Stacking Cable connect this port to the Out port of any HP 100Base T Hub Out Using a Stacking Cable connect this port to the In port of any HP 100Base T Hub The unit also supports hot swap for the Stacking Cable This allows you to unplug the Stacking Cable while the unit is powered on However if the Stacking Cable is disconnected at any point in the Stack or is not properly terminated all Ethernet and management traffic passing through the cable will be disrupted 5 14 Hardware Reference Appendix A Troubleshooting Diagnosing Hub Indicators The HP 100Base T Hub can be easily monitored through its comprehensive panel indicators These indicators assist the network manager in identifying problems the hub may encounter This section describes common problems you may encounter and possible solutions Sympt
72. d and found to work properly with the Hub 12TXM using the initialization strings shown in the following tables Hayes Smartmodem Optima 28 8 V 34 At the hub end Issue the following AT command AT amp FQ2 amp C2 amp D3S0 1 amp W0 At the user end Issue the following AT command AT amp FW1 amp C1 amp W Hayes Acura 288 V 34 FAX At the hub end Issue the following AT command AT amp FQ2 amp C2 amp D3S0 1 amp W0 At the user end Issue the following AT command AT amp FW1 amp C1 amp W US Robotics Courier V FC V 34 At the hub end Issue the following AT command AT amp F amp COSO 1 amp WO At the user end Issue the following AT command AT amp F amp W Megahertz XJ2288 PCMCIA card modem At the user end Issue the following AT command AT amp F NO amp W Modem Configuration C 1 HP 100Base T Hubs Installation and Reference Guide Practical Peripherals PM288MT II V 34 Issue the following AT command At the hub end AT amp F0 amp C2S0 102 amp D3 amp W0 Issue the following AT command At the user end AT amp FO amp WO C 2 Modem Configuration Appendix D Product Specifications Product Specifications Hub Board Access Method Standards Conformance Communication Rate Communication Mode Media Supported Number of Ports Configuration Indicator Panel Microprocessor Fault Tolerance Dimensions Power Requirements Temperature Humidity Certificatio
73. ddition to the features listed above the Switch Port Modules also use back pressure to eliminate frame loss when its port buffers fill by slowing the traffic received from end stations connected directly to this port This prevents packets being dropped due to full buffers Interconnecting Stack Segments Any hub can be completely isolated from others in the stack an isolated collision domain Only when the hub is attached to the stack s collision domain can it communicate with all hubs in the stack Refer to the discussion on Configuring Hub Parameters in Chapter 4 The best way to interconnect isolated hubs in a stack is to connect a 10 100TX Switch Port Module on one hub to a port on an isolated hub using an MDI to MDI X connection Switch Port Modules can be used in this way to interconnect all isolated hubs in a stack Refer to Chapter 3 for various interconnection examples Installing the System 2 11 HP 100Base T Hubs Installation and Reference Guide Powering on the Hub 1 Plug one end of the power cord into a power outlet and the other end into the power socket at the rear of the hub in that order for reasons of safety 2 Check the LED indicator marked Power on the front panel to see if it is on 3 The hub performs a self diagnostic test upon power on Note that this test takes about 50 seconds to complete For details about the system self diagnostic test refer to the following section The unit su
74. e The following menu will be displayed KR KKK KK KKK KKK KKK KKK KKK KKK KKK ck ckck ck ck ckck ck ck ck ckck ck ck ckck ck KK W HP J3234B AdvanceStack 100Base TX Hub 12TX m KKK KKK KKK KK KK KKK KKK KKK KKK ck ck ck ck ckck ck ck ck ck ck ck ck ckck ck ck ckck ck ck ckokck Exp Slot Port Status Duplex 100 Full Duplex Forward adaptive cut through Back Pressure enable Command Menu x d Set duplex mode ud E m Set forward mode b Set back pressure ty r Return to Main Menu i Enter command Figure 4 3 Configuration Menu for Switch Port Module Hub 12TX only Note Input options for the selected item are displayed at the bottom of the interface screen The current settings for the Switch Port Module are displayed in the status field Menu selections are briefly described in the following table EN CMM MM Set duplex mode Press d to set the transmission mode to 10 Half Duplex 10 Full Duplex 100 Half Duplex 100 Full Duplex or Auto Detect The duplex mode setting is automatically saved to the hub s EEPROM therefore there is no need to reconfigure if the power to the hub is lost Set forward mode Press m to set the frame forwarding mode to adaptive cut through or store amp forward Set back pressure Press b to enable or disable back pressure Return to Main Menu Press r to return to the Main Menu Table 4 3 Configuration Options for Switch Port Module Hub 12TX
75. e When a primary link fails the backup e secondary link automatically takes over To configure Backup Links go to the Backup Links menu in the VT 100 console interface for the Hub 12 TXM 1 To prevent traffic from looping the primary port is enabled and the backup link port disabled If the system is functioning normally the Link indicator for the primary port and the Partition indicator for the backup link port will be on 2 It is common practice to attach these links to the same physical device e g two separate adapter cards on a critical server However to provide more flexibility this is not enforced by the VT 100 console interface Intrusion Protection Any port on the hub can be configured with an authorized source address If an unauthorized intruder is detected the network management station can be notified or a trap can be sent and the port disabled 3 4 Setting Up Network Connections HP 100Base T Hubs Installation and Reference Guide Sample Network Configurations The HP 100Base T Hubs are designed to provide flexibility in configuring network connections This hub can be used as a simple standalone hub or connected to other network interconnection devices in various configurations This section includes sample applications most of which take advantage of the hub s isolation technique using the Switch Port Modules Pay attention to the examples that illustrate how to isolate a hub from the stack
76. e briefly described in the following table Field Port 13 24 1 12 Description For a model Hub 24TX this field can be used to toggle between displays for Ports 1 12 and Ports 13 24 This same toggle will also happen immediately by scrolling to the bottom of the Ports 1 12 Sceen or to the top of the Ports 13 24 screen Note this field is not displayed for 12 port hubs Hub identifier within the stack Hub ID Position Port ID Selects any station port on the hub Authorized MAC Defines the MAC address that is authorized to attach to this port its position from the top of the Stacking Cable Address Intrusion Action Response to a detected intrusion can be set to INACTIVE no action taken WARNING trap message is issued to the management station or WARNING amp DISABLE trap message is issued and port is disabled Note If a port is disabled by an unauthorized intrusion attempt it must be manually re enabled using the Admin State field in the Port Configuration menu Table 4 15 Port Intrusion Control Menu Defining Backup Ports Select Backup Links under the System Configuration menu to define up to 10 Primary Backup port pairs If the connection to the primary port fails the backup port will automatically take over For greater reliability primary and backup ports should be located on different hubs Use the following menu to specify and activate backup link pairs Configuri
77. ed documentation to the transferee The transferee must accept these Terms as a condition to the transfer Termination HP may terminate your license upon notice for failure to comply with any of these Terms Upon termination you must immediately destroy the Software together will all copies adaptations and merged portions in any form Export Requirements You may not export or re export the Software or any copy or adaptation in violation of any applicable laws or regulations U S Government Restricted Rights The Software and documentation have been developed entirely at private expense and are provided a Commercial Computer Software or restricted computer software Use duplication or disclosure by the U S Government or a U S Government subcontractor is subject to the restrictions set forth in subparagraph c 1 ii of the Rights in Technical Data and Computer Software clauses in DFARS 252 227 7013 or as set forth in subparagraph c 1 and 2 of the Commercial Computer Software Restricted Rights clauses at FAR 52 227 19 as applicable The Contractor is Hewlett Packard Company 3000 Hanover Street Palo Alto California 94304 HP J3233B HP J3234B HP J3272A HP J3247A HP J3248A E0498 R01 150870 101
78. ehr als einem Strom verteilungssystem beliefert wird m ssen Sie sich verge wissern da die Sicherheitserdungen fest untereinander verbunden sind E LAN Kabel k nnen gelegentlich gef hrlichen bergangsspan nungen ausgesetzt werden beispielsweise durch Blitz oder St rungen in dem Starkstromnetz des Elektrizititswerks Bei der Handhabung exponierter Metallbestandteile des Netzwerkes Vorsicht walten lassen Dieses Ger t enth lt innen keine durch den Benutzer zu wartenden Teile Wartungs Anpassungs Instandhaltungs oder Reparaturar beiten d rfen nur von geschultem Bedienungspersonal durchgef hrt werden Dieses Ger t hat keinen Netzschalter es wird beim Anschlie en des Netzkabels eingeschaltet Safety and Regulatory Statements E 5 HP 100Base T Hubs Installation and Reference Guide Considerazioni sulla sicurezza AN WARNING CAUTION Simbolo di riferimento alla documentazione Se il prodotto contrassegnato da questo simbolo fare riferimento alla documentazione sul prodotto per ulteriori informazioni su di esso La dicitura WARNINGdenota un pericolo che pu causare lesioni o morte La dicituraCAUTION denota un pericolo che pu danneggiare le attrezzature Non procedere oltre un avviso di WARNING o di CAUTIONprima di aver compreso le condizioni di rischio e aver provveduto alle misure del caso Questo prodotto omologato nella classe di sicurezza I ed ha un terminale protettivo di collegament
79. ended network Quick Installation vii About this Guide This guide is designed for the experienced network installer It describes how to install and operate the HP AdvanceStack 100Base T system After reading this manual you should be able to use the front display panel and configure options to manage all your network connections This manual covers the following topics Chapter 1 Product Overview Brief description of Fast Ethernet followed by a description of this hub and a summary of its important features and specifications Chapter2 Installing the System Installing a HP 100Base T hub and making basic network connections Also includes details on performing tasks using significant components on the hub including ports and indicators Chapter3 Setting up Network Connections Shows sample network configurations for a local area network Chapter 4 Configuring the System Describes how to manage the system via the VT 100 console interface Chapter5 Hardware Reference Detailed description of indicator panel and ports Appendices Troubleshooting pin assignments and product specifications About this Guide ix Contents Chapter 1 Product Overview 1 1 Introduction to Fast Ethernet 1 1 Brief Description of the HP 100Base T Hubs 1 1 Hub 12TX 1 3 Hub 12TXM 1 3 Hub 24TX 1 4 Switch Port Modules 1 4 Network Management Software 1 4 Distinguishing Features of the HP 100Base T Hubs 1 6 Feature
80. ension est effectu e par branchement du cordon d alimentation E 4 Safety and Regulatory Statements HP 100Base T Hubs Installation and Reference Guide Hinweise zur Sicherheit WARNING CAUTION Symbol f r Dokumentationsverweis Wenn das Produkt mit diesem Symbol markiert ist schlagen Sie bitte in der Produktdokumentation nach um mehr Informationen ber das Produkt zu erhalten Symbol f r Dokumentationsverweis Wenn das Produkt mit diesem Symbol markiert ist schlagen Sie bitte in der Produktdokumentation nach um mehr Informationen ber das Produkt zu erhalten Symbol f r Dokumentationsverweis Wenn das Produkt mit diesem Symbol markiert ist schlagen Sie bitte in der Produktdokumentation nach um mehr Informationen ber das Produkt zu erhalten Fahren Sie nach dem Hinweis WARNING oder CAUTION erst fort nachdem Sie den Gefahrenzustand verstanden und die entsprechenden MaBnahmen ergriffen haben Dies ist ein Ger t der Sicherheitsklasse I und verf gt ber einen sch tzenden Erdungsterminal Der Betrieb des Ger ts erfordert eine ununterbrochene Sicherheitserdung von der Hauptstromquelle zu den Ger teingabeterminals den Netzkabeln oder dem mit Strom belieferten Netzkabelsatz voraus Sobald Grund zur Annahme besteht da der Schutz beeintr chtigt worden ist das Netzkabel aus der Wandsteckdose herausziehen bis die Erdung wiederhergestellt ist F r LAN Kabelerdung E Wenn Ihr LAN ein Gebiet umfa t das von m
81. entifier verify the change with Update Above Settings command Note that Position 1 means that the hub has no Stacking Cable on its In port HP J3233B AdvanceStack 100Base TX Hub 12TXM Hub ID Configuration Back to Previous Menu Position Hub ID 1 NOT PRESENT NOT PRESENT NOT PRESENT NOT PRESENT Oc goNDP Update Above Settings Back to previous menu Enter to confirm lt Ctrl Z gt to back to Main Menu Figure 4 14 Hub ID Configuration Menu 4 22 Configuring the System HP 100Base T Hubs Installation and Reference Guide Configuring Port Parameters Select Port Configuration under the System Configuration menu to configure the ports for any hub in the stack Select the port type for the required hub from the following menu HP J3233B AdvanceStack 100Base TX Hub 12TXM Port Configuration 12 Exp Slot Back to previous menu Enter to confirm lt Ctrl Z gt to back to Main Menu Figure 4 15 Port Configuration Port Selection Menu Configuring Hub Ports If you select the hub port type i e 1 through 12 the Port Configuration Menu will open This menu displays the ID and stack position of the selected hub and also allows you to enable disable any hub port in the selected hub Configuring the System 4 23 HP 100Base T Hubs Installation and Reference Guide HP J3233B AdvanceStack 100Base TX Hub 12TXM Port Configuration Port 13 24 Hub ID 1 Position 1 Port
82. ference Guide Screen statistics are not automatically refreshed from the agent Select Refresh Statistics to update the displayed values The values displayed have been accumulated since the last system reboot Hub Statistics From the Statistics menu select Hub Statistics to access this information Hub statistics can be displayed for any hub in the stack Select the required hub from the menu HP J3233B AdvanceStack 100Base TX Hub 12TXM Hub Statistics Hub 1 Statistics Hub 2 Statistics Hub 3 Statistics Hub 4 Statistics Hub 5 Statistics Back to previous menu Enter to confirm lt Ctrl Z gt to back to Main Menu Figure 4 23 Hub Statistics Hub Selection Menu Hub statistics can be used to check on the general health of your hardware and network connections If any of the error indications are extremely high for example collisions or CRC errors you should take appropriate measures to resolve the problem Configuring the System 4 31 HP 100Base T Hubs Installation and Reference Guide Screen statistics are not j HP J3233B AdvanceStack 100Base TX Hub 12TXM automatically refreshed from the agent Select Refresh Statistics Hub Statistics Back to Previous Menu Refresh Statistics to update the displayed values The values displayed have been accumulated since the last system reboot Hub ID 1 Position 1 Frames 3497 Bytes 3 482272 Collisions 7 Align
83. ged value s q Exit menu d Enter command Figure 4 2 Main Configuration Menu Hub 12TX only Note Input options for the selected item are displayed at the bottom of the interface screen Menu selections are briefly described in following table Command Description Change password Press c to change the password Passwords can be up to 5 characters long and are case sensitive Change isolation status Press i to isolate the hub from the stack s collision domain Set hub ID Press h to set the hub identifier to any value from 1 5 When stacked with a management agent note that all hub identifiers are automatically configured Set Expansion Slot status Press e to display the menu for the Switch Port Module Refer to the following table for a description of the configuration options for this module Set values to factory default Press d to set hub values back to factory defaults Save changed value s Press s to write all configuration changes to nonvolatile memory You must save your changes or they will be lost the next time you restart the system Exit Press q to quit the configuration menu and return to the command prompt Table 4 2 Configuration Options in Main Menu Hub 12TX only Configuring the System 4 9 HP 100Base T Hubs Installation and Reference Guide Configuring the Switch Port Module To configure the Switch Port Module press
84. guring the System Making the Connections Required for System Configuration Direct Connection Network Connection Local Network Telnet Connection Local Network Connection Remote Connection Configuring the Hub 12TXM Site Configuring the Remote Site Remote Configuration Methods Configuring Your System Using the VT 100 Console Interface System Configuration for the Hub 24TX System Configuration for the Hub 12TX Configuring the Switch Port Module 3 1 3 1 3 1 3 2 3 3 3 3 3 4 3 4 3 4 3 5 3 5 3 6 3 7 3 9 3 10 3 11 3 12 4 1 4 1 4 2 4 2 4 3 4 3 4 3 4 4 4 4 4 5 4 7 4 7 4 8 4 10 xii Contents HP 100Base T Hubs Installation and Reference Guide System Configuration for the Hub 12TXM and Stack 4 11 Displaying System Information 4 12 System Configuration 4 13 Changing the Network Configuration 4 14 Configuring the SNMP Agent 4 16 Configuring SNMP Communities 4 17 Configuring IP Trap Receivers 4 18 Configuring IPX Trap Receivers 4 19 Configuring Hub Parameters 4 20 Hub Configuration 4 21 Hub ID Configuration 4 22 Configuring Port Parameters 4 23 Configuring Hub Ports 4 23 Configuring the Switch Port Module 4 24 Port Intrusion Control 4 26 Defining Backup Ports 4 27 System Statistics 4 29 Stack Statistics 4 30 Hub Statistics 4 31 Port Statistics 4 33 Statistics for Hub Ports 4 33 Statistics for Switch Port Module 4 35 Downloading System Software 4 36 Downloading System Software via a TFTP
85. h ends of the cable to facilitate troubleshooting or future changes to network configuration The HP 100Base T Hubs have 12 or 24 RJ 45 shielded ports i e 100Base TX that support connections to 100 Mbit s Fast Ethernet Ports 1 12 24 MDI X allow you to connect to devices such as a workstation or server While Port 12 Port 24 MDD lets you easily cascade to a compatible switch or router i e connecting from MDI to MDI X ports on either device The Hub 12TX Hub 12TXM also provides an Expansion Slot for plugging in optional Switch Port Modules These modules support a single connection to 100Base TX or 10Base T or 100Base FX They provide a convenient way to attach to devices which use an alternate media type e g linking fiber optic cable to a remote device The transmission speed for 100Base TX ports on the optional Switch Port Modules is automatically set at 10 or 100 Mbit s to match the operating speed of the attached device Moreover the transmission mode of the 100Base TX and 100Base FX ports on the optional modules is set at full or half duplex to match the optimum capability of the attached device Note Auto negotiation sets the transmission mode automatically on the 10 100TX Switch Port Module but not on the 100Base FX module You need to manually set the transmission mode in the 100Base FX module using the VT 100 console interface Making a Connection via an MDI X Hub Port You can connect an RJ 45 station port
86. h these models CE Network Connection Before accessing a hub using a Telnet connection be sure you have already set the agent s IP address via the VT 100 console interface or boot protocol Attach a VT 100 compatible terminal or a PC running a terminal emulation program to the DB9 Console Port on the front of any HP 100Base T Hub model Use the included null modem cable that complies with the wiring assignments provided in Appendix B When attaching to a PC set terminal emulation type to VT 100 specify the port used by your PC i e COM 1 4 and then set communications to 8 data bits 1 stop bit no parity and 9600 bps Set flow control to none The Hub 12TX and Hub 24TX can only be managed via a direct connection or via a Hub 12TXM unit located in the same stack The on board configuration menu on the Hub 12TXM can also be accessed by connecting a PC to any available port on the stacked system If proper network interconnections are available you can access the management agent from anywhere in the attached network However if the stack has hubs that are isolated you must connect to the collision domain containing the SNMP management agent Local Network Telnet Connection Prior to accessing the hub via a Telnet connection you must first configure it with a valid IP address subnet mask and default gateway using an out of band connection or boot protocol Refer to Using the VT 100 Console Interface later in t
87. he Expansion Slot first disconnect power to the concerned hub Configuring a Manageable Stack The VT 100 console interface only provides access to the private MIB To manage the stack with the VT 100 console interface the stack must include a Hub 12TXM i e a unit with an SNMP agent You should also consider adding a backup SNMP agent to provide greater management reliability for critical applications The procedures required to install these system components are described below Installing an SNMP Backup Agent Just add the Hub 12TXM s to the stack and let the system automatically choose the Master agent and the backup agent based on position in the Stacking Cable chain The Master indicator on the device chosen as the primary agent will turn ON The Backup indicator will turn ON for all other Hub 12TXMs Installing the System 2 13 HP 100Base T Hubs Installation and Reference Guide Verifying Port Status Check each connection by viewing the port status indicators listed below For a more detailed description on these indicators refer to Chapter 5 A Port has established a valid network connection The RJ 45 plug has been properly seated in the RJ 45 port Blinking Traffic is traversing the port Blinking Traffic is traversing the port 100 Mbit s mode 1 The indicator appears on the front of the 10 100TX Switch Port Module Table 2 4 Checking Key LED Indicators
88. his chapter After configuring the hub s IP parameters you can Telnet into its menu driven VT 100 console interface from anywhere within the attached network 4 2 Configuring the System HP 100Base T Hubs Installation and Reference Guide Before accessing a hub using AdvanceStack Assistant be sure you have already set the agent s IP address via the VT 100 console interface or boot protocol er Remote Connection Connect your modem and PC at the remote site Remotely configure the hub using the VT 100 console interface Local Network Connection If you want to use HP AdvanceStack Assistant to discover the HP 100Base T Hubs system then first set up your Network Management Station NMS The NMS is the personal computer used to run your network management software HP provides Windows and Unix based network management through software called HP AdvanceStack Assistant This Windows software comes with the hubs as part of the product offering If proper network connections are available you can access HP AdvanceStack Assistant from anywhere in the attached network However prior to accessing the Hub 12TXM using HP AdvanceStack Assistant you must first configure the hub with a valid IP address subnet mask and default gateway using the VT 100 console interface After completing hardware installation configure the hub using the out of band VT 100 console interface Refer to the following sections for details on
89. ia a network connection Jabber Refers to an abnormal Ethernet frame transmission The frames causing jabber are normally much too long It may come from a malfunctioning Ethernet LAN adapter and may cause data loss for all network users LED Light emitting diode on the front panel of the HP 100Base T Hub used for monitoring a hub or network condition MAC Media Access Control A portion of the networking protocol that governs access to the transmission medium facilitating the exchange of data between network nodes 2 Glossary HP 100Base T Hubs Installation and Reference Guide MDI Port Medium Dependent Interface MDI is the IEEE standard for the twisted pair interface to 10Base T or 100Base TX This RJ 45 port can be used with straight through cable to connect the hub to a network interconnection device such a switch Pin out assignments are shown in Appendix B MDI X Port Medium Dependent Interface Crossed This RJ 45 port which crosses the receive and transmit signals internally can be used with straight through cable to connect the switch or hub to any device that has a standard network interface e g workstation server or router Pin out assignments are shown in Appendix B MIB Management Information Base An acronym for Management Information Base It is a set of database objects that contains information about the device MII Media Independent Interface IEEE Ss specifications for a multi med
90. ia interface that supports 100Base TX 100Base T4 100Base FX or 10Base T Network Management Station The computer used to run SNMP management software e g HP AdvanceStack Assistant It is used by the network manager to monitor the network and devices on the network Out of Band A way of communicating with a network device from outside the standard network channels via the serial port RJ 45 Connector Most common terminator for twisted pair wiring SLIP Serial Line Internet Protocol Internet protocol used to transfer IP datagrams over serial lines Glossary 3 HP 100Base T Hubs Installation and Reference Guide SNMP Simple Network Management Protocol The application protocol offering network management services in the Internet suite of protocols Stacking Ports SCSI ports found at the back of the HP 100Base T Hub labeled In and Out These ports are used for linking the hub to other compatible hubs using HP s Stacking Cable Star Topology Physical connections for RJ 45 ports are limited to a star configuration i e similar to a hub and spoke arrangement This topology also requires that only one path exists between any two nodes and that data transmitted by any node is concurrently available to all other nodes within the same local network i e immediate collision domain Station Port MDI X MDI X ports which are used for connecting the hub to any workstation or server that has a properly installed
91. icators in Chapter 5 for a more detailed description of the reasons a port may be partitioned Table 4 13 Port Configuration Menu Configuring the Switch Port Module If you select Exp Slot 1 e Switch Port Module on the Port Configuration Port Selection menu the Exp Slot Port Configuration Menu will open This menu allows you to configure various communication parameters for this module 4 N AB Configuring the System HP 100Base T Hubs Installation and Reference Guide HP J3233B AdvanceStack 100Base TX Hub 12TXM Exp Slot Port Configuration Back to Previous Menu Hub ID 1 Position 1 Name B Type 100BASE TX Link State DOWN Speed 10M Admin Status ENABLED Oper Status ENABLED Duplex Mode AUTO NEGOTIATION Duplex In Use NEGOTIATED HALF DUPLEX Back Pressure DISABLED Forwarding Mode STORE AND FORWARD Forwarding In Use STORE AND FORWARD Back to previous menu Enter to confirm lt Ctrl Z gt to back to Main Menu Figure 4 17 Exp Slot Port Configuration Menu Menu items are briefly described in the following table Field Description Hub ID Hub identifier within the stack The physical position in the stack as determined by its position from the top of the Stacking Cable Name User defined name for selected port Types for the Switch Port Modules include 10 100Base TX 100Base FX Link State Indicates if the port has a valid connec
92. id power source Quick Installation V HP 100Base T Hubs Installation and Reference Guide Special Considerations to Note The following are special considerations to note When connecting an end node to the Switch Port on the Switch Port Module the maximum cable length is 100 meters for twisted pair cable and two kilometers for fiber Refer to Chapter 2 for a more detailed description of the maximum cable length permitted For integrating legacy networks the 10 100TX Switch Port Module provides for connection via either 100Base TX or 10Base T A 10 100TX Switch Port Module uses auto sensing to set the transmission speed at 10 or 100 Mbit s even if the target device does not support auto negotiation for transmission mode full duplex or half duplex The Switch Port Modules support both half duplex and full duplex communications However for this hub to correctly set the transmission mode the attached device must also support auto negotiation If auto negotiation fails the transmission mode defaults to half duplex If this setting is not suitable then the transmission mode must be manually configured using the Exp Slot Configuration screen in the VT 100 console interface see Chapter 4 To reactivate auto negotiation on the 10 100TX Switch Port Module just unplug a connection from the Switch Port on the hub and plug it in again Remember that full duplex mode can only be used for switched not shared connections on i
93. ide Connecting Remote Stacks Fiber optic cable provides an advantage for inter stack connections because it can be connected over greater distances This enables multiple stacks in remote locations to be connected The HP 100Base T Hubs stacks can be connected by using the fiber port on the 100FX Switch Port Module For example you can connect two stacks by running a fiber cable from the FX port on the Switch Port Module in a hub in one stack to the fiber port on the Switch Port Module of any hub in a remote stack This Switch Port to Switch Port connection provides a full duplex connection enabling you to connect two stacks that are as far apart from each other as two kilometers You can also connect two stacks by running a Category 5 twisted pair cable from the 10 100TX Switch Port Module of any hub to any station port of a hub in the remote stack However when you connect directly to a hub using twisted pair cable the maximum separation between stacks is 100 meters Hub 1 Stacking Cable Hub 2 Management Channel solated Hub3 Data Channel Hub 4 Standalone Hub
94. iguration screen in the VT 100 console interface see the Hub Configuration screen in the VT 100 console interface in Chapter 4 Note that the collision domain of the isolated hub hub 5 is separated from the collision domain of the hubs in the stack hubs 1 2 3 and 4 This technique is very useful in instances when one hub is receiving unusually high traffic and may be slowing the traffic on all of the hubs in the stack Hub 5 is providing improved performance because traffic associated with it is removed from the stack With careful planning you can restrict access for specific user groups to required connections only Hub 1 Stacking Cable Hub 2 Management Hub 3 Channel Hub 4 Data Channel Isolated Hub 5 s IL Figure 3 2 Linking Part of the Stack to the Stack Collision Domain with Straight through Category 5 Twisted pair Cable Note A hub isolated from the stack collision domain can still be managed via the management channel even though the hub is not receiving or transmitting network traffic through the Stacking Cable Setting Up Network Connections HP 100Base T Hubs Installation and Reference Guide Isolating Multiple Hubs In this example each isolated hub has its own collision
95. in the future when you upgrade attached devices to Fast Ethernet 3 You may also connect a device to the Switch Port located on the hub s front panel if required However be sure you use a Switch Port Module that meets your communication requirements Refer to Data Switching with the Switch Port Modules in Chapter 1 for more details 4 To facilitate troubleshooting label all network cables to indicate the attached device and location Connecting the Stacking Cable Plug one end of the Stacking Cable provided with the base package in the Out port of the top hub and the other end to the In port of the next hub Repeat this step for each hub in the stack Form a simple chain starting at the Out port on the first hub and ending at the In port on the last hub Refer to the Stacking Ports section in Chapter 5 for related information Hubs in a stack can only be managed by the network management agent through the Stacking Cable In a managed stack you should there fore use the Stacking Ports to make Out to In connections with a management agent i e a Hub 12TXM included in the chain Installing the System 2 5 HP 100Base T Hubs Installation and Reference Guide The HP 100Base T Hub is a Class I repeater Class I repeaters cannot be cascaded to another hub in the same collision domain The cascade port can only be connected to another device which breaks up the collision domain e g an Ethernet switch Notes Maki
96. ion 1 5 15 Green Indicates percentage of LAN bandwidth in use by valid 30 65 Yellow data Table 5 8 Utilization Indicators There are five LEDs representing the percentage of network bandwidth in use by the attached stack or isolated hub When active these LEDs look like a stereo s equalizer display The hub updates this display every 0 5 seconds For example if network utilization reaches 1 the LED labeled 1 will light However if network utilization rises above 1 e g 30 the LED labeled 30 and all the other LEDs before it 1 e 1 5 and 15 will light in rapid succession These LEDs monitor the share of valid network frames transmitted by the stack or this hub if isolated within a 100Mbit s bandwidth They provide a quick way to monitor the current traffic load relative to the capacity available to the attached collision domain Color Green and yellow Label Color Function 1 3 5 Green Shows percentage of packet collisions occurring 10 15 Yellow out of the total packets received by the hub Table 5 9 Collision Indicators Collisions occur when two or more devices connected to a hub attempt to transmit data simultaneously on the network When a collision occurs devices pause and then re transmit after a 5 6 Hardware Reference HP 100Base T Hubs Installation and Reference Guide pseudo random wait period Because wait periods differ among devices successive collisions become incre
97. ion Control on the System Configuration menu to restrict access for any port to an authorized source address Select the required hub from the following menu HP J3233B AdvanceStack 100Base TX Hub 12TXM Port Intrusion Control Hub 1 Ports Intrusion Control Hub 2 Ports Intrusion Control Hub 3 Ports Intrusion Control Hub 4 Ports Intrusion Control Hub 5 Ports Intrusion Control Back to previous menu Enter to confirm lt Ctrl Z gt to back to Main Menu Figure 4 18 Port Intrusion Control Hub Selection Menu Use the Port Intrusion Control Menu to define the MAC address for the device authorized to access a port and set the response type as shown in the following example HP J3233B AdvanceStack 100Base TX Hub 12TXM Port Intrusion Control Back to Previous Menu Port 13 24 Hub ID 1 Position 1 Port ID Authorized MAC Address Intrusion Action Ex 000000 000000 INACTIVE 2 000000 000000 INACTIVE 3 000000 000000 INACTIVE 4 000000 000000 INACTIVE E 000000 000000 INACTIVE 6 000000 000000 INACTIVE 7 000000 000000 INACTIVE 8 000000 000000 INACTIVE 9 000000 000000 INACTIVE 10 000000 000000 INACTIVE 11 000000 000000 INACTIVE 12 000000 000000 INACTIVE Back to previous menu lt Enter gt to confirm lt Ctrl Z gt to back to Main Menu Figure 4 19 Port Intrusion Control Menu 4 26 Configuring the System HP 100Base T Hubs Installation and Reference Guide Menu items ar
98. is attached to the hub verify that its LAN adapter is functioning properly by trying it in another computer that has been successfully connected to the network e When using a 10 100TX or 100FX Switch Port Module both sides of each connection must use the same transmission mode i e full or half duplex If the device connected to the hub operates at full duplex but does not support auto negotiation then you must manually set the transmission mode via the VT 100 console interface Refer to section on Setting the Communication Mode earlier in this chapter e Verify that your cable is Category 5 If you still can t resolve the problem please refer to Troubleshooting in Appendix A Installing the System 2 15 Chapter 3 Setting up Network Connections This chapter outlines several sample configurations for a local area network utilizing specific features of an HP 100Base T Hubs stack As described in Chapter 2 up to five HP 100Base T Hubs can be connected together using the Stacking Cable which attaches to the Stacking Ports on the rear panel to create a complete hub stack Hubs connected in this way form a single collision domain that extends across all hubs in the stack To exclude a hub in the stack from this collision domain it is possible to isolate it through configuration options in the VT 100 console interface refer to Chapter 4 for details Using the HP 100Base T Hubs stack isolation architecture together
99. ision A condition in which two packets transmitted over a medium interfere with each other Their interference makes both signals unintelligible The transmitting devices have to halt transmission for a random period of time before trying to send data again Note that collisions do not occur on full duplex connections Configuration The way to set up a computer server or local area network Connection A logical binding between two or more users of an interconnection service Glossary 1 HP 100Base T Hubs Installation and Reference Guide Ethernet A network communication system developed and standardized by DEC Intel and Xerox using baseband transmission CSMA CD access logical bus topology and coaxial cable The successor IEEE 802 3 standard provides for integration into the OSI model and extends the physical layer and media with repeaters and implementations that operate on fiber optics baseband and twisted pair Fast Ethernet 100 Mbit s network communication system based on Ethernet and the CSMA CD access method File Transfer Protocol FTP An application protocol used for transferring files to network devices IEEE 802 3 Standard Standard for the physical and electrical connections in local area networks developed by the IEEE Institute of Electrical and Electronics Engineers The IEEE 802 3u standard covers these same issues for 100 Mbit s networks In Band A way of communicating with a network device v
100. ith Internet Protocol IP can pass trap messages to IP Trap Receivers as shown below HP J3233B AdvanceStack 100Base TX Hub 12TXM IP Trap Receivers Back to Previous Menu IP Address Community Name Status Ls 0 0 0 0 public DISABLED 24 0 0 0 0 public DISABLED 3 0 0 0 0 public DISABLED 4 0 0 0 0 public DISABLED 5 0 0 0 0 public DISABLED 6 0 0 0 0 public DISABLED T4 0 0 0 0 public DISABLED 8 0 0 0 0 public DISABLED 9 0 0 0 0 public DISABLED 10 0 0 0 0 public DISABLED Back to previous menu Enter to confirm lt Ctrl Z gt to back to Main Menu Figure 4 10 IP Trap Receivers Menu Menu items are briefly described in the following table Field Description IP Address IP address of the trap receiver Use dotted decimal notation Community Name The community string required for trap access Status The current entry can be ENABLED or DISABLED Table 4 10 IP Trap Receivers Menu 4 18 Configuring the System HP 100Base T Hubs Installation and Reference Guide Configuring IPX Trap Receivers When the hub experiences an unusual event a message is issued to all listed network managers Networks compliant with Internetwork Packet Exchange NetWare IPX protocol can pass trap messages to PX Trap Receivers as shown below HP J3233B AdvanceStack 100Base TX Hub 12TXM IPX Trap Receivers Back to Previous Menu IPX Address Community Name Status 1 00000000 000000 000000 public DISABLED 2 00000
101. m operation Verifying 2 14 System statistics Allignment Errors 4 30 4 32 4 34 Auto Partitions 4 34 Collisions 4 30 4 32 4 34 CRC Errors 4 30 4 32 Data Rate Mismatch 4 34 FCS Errors 4 34 Frames 4 30 4 32 Frames Too Long 4 34 Late Events 4 34 Runts 4 34 Short Events 4 34 Symbol Errors 4 30 4 32 Total Errors 4 30 4 32 4 34 T Total bandwidth 1 7 Traffic 5 8 Transmission mode Selection 2 10 Troubleshooting A 1 Cabling A 3 Configuration A 4 Hub indicators A 1 Installation A 2 Power and cooling A 2 Twisted pair cable Category 3 4 5 2 5 A 3 4 Index U Utilization 5 6 V VT 100 Console Interface System configuration Hub 12TX 4 8 System configuration Hub 24TX e 4 7 Using 4 7 HP Software Product License Agreement Attention Use of the software is subject to the HP software license terms documented below Using the software indicates your acceptance of these terms If you do not accept these terms you may return the software and the products with which the software is supplied for a full refund Hewlett Packard Software License Terms The following Terms govern your use of the Software unless you have a separate written agreement with Hewlett Packard HP License Grant HP grants you a license to Use one copy of the version of the Software identified in your documentation on a computer then containing any of the HP Network Products pro
102. m your HP sales and service office or HP authorized reseller Hewlett Packard Company 8000 Foothills Boulevard m s 5551 Roseville California 95747 5551 http www hp com go network city Package Contents Carefully unpack the contents of the package and verify them against the checklist given below This checklist applies to both the HP AdvanceStack 100Base T Hub 12TXM the HP AdvanceStack 100Base T Hub 12TX and the HP AdvanceStack 100Base T Hub 24TX Package Checklist M HP J3233B AdvanceStack 100Base T Hub 12TXM Fast Ethernet Stackable Hub with 12 100Base TX Ports including SNMP Management Support or HP J3234B AdvanceStack 100Base T Hub 12TX Fast Ethernet Stackable Hub with 12 100Base TX Ports or HP J3272A AdvanceStack 100Base T Hub 24TX Fast Ethernet Stackable Hub with 24 100Base TX Ports with optional HP J3247A 10 100TX Switch Port Module Fast Ethernet 10 100Base TX Switch Port Module with 1 MDI X port and 1 MDI cascade port or HP J3248A 100FX Switch Port Module Fast Ethernet 100Base FX Switch Port Module with SC type RX and TX ports M One rack mount kit M Four rubber foot pads Package Contents i HP 100Base T Hubs Installation and Reference Guide Vl Power cord one of the following Australia New Zealand 8120 6810 Denmark 8120 6814 Europe 8120 6811 Japan 8120 6798 Switzerland 8120 6815 United States Canada 8120 6812 United Kingdom 8120 6809 M One 0 2 meter Stacking Cable
103. main of the stack SNMP Agent Status Defines the status of the management agent as Primary or Backup H W Ver _ Indicates the current hardware version number for the management board F W Ver Indicates the current firmware version number for the management board Mac Address MAC address of the management agent Configuring the System 4 21 HP 100Base T Hubs Installation and Reference Guide Description SNMP Agent Bootup Option Specifies bootup method as NORMAL Use on board ROM code and default IP address TFTP DOWNLOAD Get system code from TFTP server and use default IP address This process is repeated each time power to the hub is reset BOOTP GET IP Get IP address from server and use on board ROM code BOOTP DOWNLOAD Get IP address and system code from server Image is stored in temporary memory NO BOOTP TFTP REQUEST Do not issue BOOTP request Wait for download via out of band BOOTP UPGRADE FIRMWARE Get IP address and system code from server Image is stored in nonvolatile memory and BOOTP option reset to NORMAL Note that this is the only network option that places the image in nonvolatile memory Table 4 12 Hub Configuration Menu Hub ID Configuration To change the numeric hub identifier select Hub ID Configuration from the Hub Configuration Hub Selection menu shown above The following Hub ID Configuration menu will appear After changing a hub id
104. ment Errors 0 CRC Errors 0 Total Errors 0 Symbol Errors 0 Back to previous menu Enter to confirm lt Ctrl Z gt to back to Main Menu Figure 4 24 Hub Statistics Window Displayed items are briefly described in the following table Field Description Hub ID Hub identifier within the stack The physical position in the stack as determined by its position from the hub with no connection on the In port Frames Number of frames passing through this device Bytes Number of bytes passing through this device Collisions Number of simultaneous node transmissions detected by this device Alignment Errors Number of mis synchronized data packets detected by this device CRC Errors Number of Ethernet Cyclic Redundancy Check errors detected by this device Total Errors Total number of errors including CRC alignment FramesTooLong ShortEvents LateEvents Jabber and DataRateMismatches detected on this device Symbol Errors Number of symbol errors i e code group errors including collision artifacts or transmission errors Note that these errors are unique to 100Mbit s analog signals Table 4 19 Hub Statistics Window 4 32 Configuring the System HP 100Base T Hubs Installation and Reference Guide Port Statistics Displays statistics for any port in the stack Select the required port from the following menu HP J3233B AdvanceStack 100Base TX Hub 12T
105. n Emissions Immunity Safety CSMA CD 100 Mbit s IEEE 802 3u 100Base TX 100 Mbit s on all Ports Half duplex 100Q Cat 5 twisted pair 2 pair STP and UTP Hub 12TX Hub 12TXM 12 100Base TX RJ 45 shielded station ports Port 12 provides MDI X or MDI connection 1 Expansion Slot for Switch Port Modules Hub 24TX 24 100Base TX RJ 45 shielded station ports Port 24 provides MDI X or MDI connection All Models 2 Stacking Ports for stack interconnection and 1 serial port for system management On board VT 100 console interface configuration via serial port or Telnet Comprehensive array of LEDs for displaying hub ID network utilization collision rate Switch Port Module management agents hub isolation port link traffic and port partition disable 8031 Hub 12TX Hub 24TX i960CA Hub 12TXM Hot swappable backup SNMP agent redundant port links 440mm x 305mm x 65mm 17 3 x 12 0 x 2 6 Full range power input 100 to 240V 50 60 Hz 60 watts max 5 C to 40 C Standard Operating 5 to 85 Noncondensing CE Mark FCC Class A VCCI Class A CISPR 22 Class A EN55022 IEC 801 2 3 4 6 EN50082 1 EN60555 2 Class A EN60555 3 UL 1950 CSA 950 EN60950 Product Specifications HP 100Base T Hubs Installation and Reference Guide Hub Stack Switching Port Expansion Expansion Interface Configuration Isolation Access Method Standards Conformance Communication Rate Communication Mode Media Su
106. n Fiber Optics When using fiber optic cabling the maximum length between two hubs can be up to 2 kilometers However you must consider power loss when calculating the actual length of cable that can be used with your system You can calculate power loss with the following formula _ pdB idB m c dB km Variable m cable length kilometers dB ower budget i dB intervening devices c dB km loss per kilometer of cable e g patch cables and splices Table 2 2 Calculating the Power Budget for Fiber Optic Devices Note To determine the power loss incurred by intervening devices and specific cable type inquire with the manufacturer The power budget depends on the gauge of cable as shown below Gauge of Fiber Cable Power Budget 50 125 um 9 2 dB 62 5 125 um 13 dB Table 2 3 Power Budget for Common Fiber Optic Devices For a sample calculation assume the following values cable gauge 62 5 125 um which means a 13 dB power budget e 2 patch panels along the path each with 1 5 dB power loss e 1 splice with 1 dB power loss and e inherent power loss in the cable is 4 dB km The maximum cable length is therefore m 13dB 4dB 2 25 km 4 dB km Note Even though your calculations for power loss may indicate a longer permissible length based on signal strength as seen in the preceding example we advise remaining within the recommended limits Installing the System 2 9 HP 100Base T Hubs Install
107. n the isolated hub When connecting a hub to the 10 100TX Switch Port Module the maximum cable length is 100 meters Thisisa bridged connection and keeps the collision domain on the isolated hub separate from the main collision domain of the other hubs in the stack If you do not have an available Switch Port Module the isolated hub can be connected to the stack collision domain by the following method Run straight through twisted pair cable from the hub s MDI port to an MDI X port on a switch or router Make sure the switch or router has RJ 45 ports if not attach a standard MAU for the AUI port to achieve the connection 8 Connect the overall stack to the extended network by connecting a hub to an internetwork device Run straight through twisted pair cable from the hub s MDI port to an MDI X port on a switch bridge or router Make sure the router has RJ 45 ports if not attach a standard MAU for the AUI port to achieve the connection Notes 1 When using the 12MDI 24MDI port remember that port 12MDI X 24MDI X cannot be used 2 If you have hubs that are isolated in the stack in order to connect the stack collision domain to the network use the station port of a hub that is NOT isolated 9 Verify network communications you have made all the necessary connections you can access any connected resources the hub s indicators are functioning properly the power cords for all connected devices are connected to a val
108. nd Reference Guide Power Precautions Follow these precautions when unplugging and plugging in power to the hub Caution If your installation requires a different power cord than the one supplied with the hub be sure to use a power cord displaying the mark of the safety agency that defines the regulations for power cords in your country The mark is your assurance that the power cord can be used safely with the hub Note The hub does not have a power switch it is powered on when the power cord is plugged in The hub s power supply automatically adjusts to any AC power source between 100 127 volts and 200 240 volts There are no voltage range settings to configure When installing the hub note that the AC outlet must be installed near the equipment and should be easily accessible E 2 Safety and Regulatory Statements HP 100Base T Hubs Installation and Reference Guide Safety Information Grounding Servicing AN WARNING CAUTION Documentation reference symbol If the product is marked with this symbol refer to the product documentation to get more information about the product A WARNING in the manual denotes a hazard that can cause injury or death A CAUTION in the manual denotes a hazard that can damage equipment Do not proceed beyond a WARNING or CAUTION notice until you have understood the hazardous conditions and have taken appropriate steps These are safety class I products and have pro
109. network or call into the hub from a remote computer using a modem connection Note The HP Hub 12TXM controls the configuration for the entire stack of hubs it is in The Hub 12TXM model also provides an on board management agent based on Simple Network Management Protocol SNMP This agent allows you to discover the hub and connected stack from any PC attached to the network with HP AdvanceStack Assistant This software provides advanced management functions using a straight forward graphical user interface This chapter describes how to perform basic configuration and manage the overall stack via Direct connection making a local connection via the hub s Console Port to the menu driven VT 100 console interface e Network connection Ability to Telnet over the network to the menu driven VT 100 console interface Remote connection making a modem connection via the hub s Console Port to the menu driven VT 100 console interface It also describes how to access the SNMP agent over a network using HP AdvanceStack Assistant Configuring the System 4 1 HP 100Base T Hubs Installation and Reference Guide Direct Connection The Hub 12TX and Hub 24TX do not include a management agent Configuration options for these models are therefore limited to direct connection only Moreover configuration via the Console Port on these models is limited to that hub only i e the attached stack cannot be managed wit
110. network LAN adapter For port 12 24 the selector switch must be set to 12MDI X 24MDI X STP Shielded Twisted Pair 100Q Category 5 twisted pair wire covered with an external aluminum foil or woven copper shield designed to reduce excessive noise pick up or radiation UTP Unshielded Twisted Pair Cable composed of insulated wires twisted together to reduce electrical interference Xmodem A protocol used to transfer files between devices Data is grouped in 128 bytes blocks and error corrected 4 Glossary Index A Applications Connecting remote stacks 3 11 Connecting to the extended network e 3 12 Extending the network with alternate connections 3 8 Interconnecting isolated collision domains 3 10 Isolating multiple hubs 3 7 Isolating specific hub connections 3 6 Linking the stack to a management station 3 9 Backup Links 3 4 Backup port parameters 4 27 Bridging functions 2 10 Bytes 4 30 4 32 C Cascade Port 5 11 Changing user passwords 4 39 Collision 5 6 Collision domain timing constraints 2 8 Communication mode Selection 2 10 Setting 2 10 Configuration parameters Authorized Port Address 4 27 Bootup Option 4 22 Community Name 4 17 Download Filename 4 37 Download Mode 4 37 Download Server IP 4 37 Gateway IP 4 15 Half Full Duplex 4 25 Index Hub ID 4 21 Hub Position 4 21 IPX Frame Type 4 15 Link State 4 24 4 25 Partiti
111. ng a Connection via the MDI Cascade Port Stackable Fast Ethernet hubs are generally restricted to Class I repeater types due to the timing requirements for passing traffic through the Stacking Cable Although Class I repeaters cannot be cascaded to another device in the same collision domain via the cascade port more powerful interconnection options are provided via the hub s Stacking Cable and optional Switch Port Modules The MDI port can only be connected to another device which breaks up the collision domain e g an Ethernet switch Prepare straight through 100Q Category 5 shielded or unshielded twisted pair cables with RJ 45 plugs at both ends Connect one end of the cable to the 12MDI 24MDI port on this hub and the other end to a standard MDI X station port on the other device Remember that when using the cascade port 12MDI 24MDI hub port 12MDI X 24MDI X cannot be used When inserting an RJ 45 plug be sure the tab on the plug clicks into position to ensure that it is properly seated 1 Make sure the length of twisted pair cable does not exceed 100 meters 2 To connect to another device i e anything other than a repeater you may also run straight through twisted pair cabling from an MDI X port on this hub to an MDI port on the other device However if you must connect to another device via station ports at both ends of the cable use crossover cabling Connecting to a Switch Port Module The AdvanceStack Hub 12TX Hu
112. ng table Configuring the System 4 11 HP 100Base T Hubs Installation and Reference Guide Fick Description a System Information ese Configuration Identifies the system 1 1 O Network parameters mmprPe ew PT ECT TS agent hub port and backup links configuration menus Statistics Download Displays for network hub and port performance information Download new firmware by TFTP network or Xmodem Console Port Console Security Connectivity Test Restart the Agent Defines password for administrator and guest Also sets the time the system will wait without receiving any keyboard input before logging you off the VT 100 console interface Performs connection tests between the agent and another designated device on the network Reboots the system Exit Exits the configuration interface and returns to operating system Table 4 4 Main Configuration Menu Displaying System Information Choose System Information from the Main menu to display and modify general information about the Hub 12TXM stack or for quick system identification View a description of the system similar to that displayed in the following example HP J3233B AdvanceStack 100Base TX Hub 12TXM System Information Back to Previous Menu System Description HP J3233B AdvanceStack 100Base TX Hub 12TXM System Object ID ob 9 621 425401 11 2 3 7 55 18 System Up Time 26333 0 day 0 hr 4 min 2
113. ng the System 4 27 HP 100Base T Hubs Installation and Reference Guide HP J3233B AdvanceStack 100Base TX Hub 12TXM Backup Links Back to Previous Menu n t Primary Port Backup Port Port Backup Status e 1 Hub 1 Port 1 Hub 2 Port 1 Enabled Primary 2 Hubs E Port 2 Hub 2 Port 2 Enabled Backup 3 Hub 1 Port 3 Hub 2 Port 3 Disabled 4 Hub Port Hub Port Disabled 5 Hub Port Hub Port Disabled 6 Hub Port Hub Port Disabled 7 Hub Port Hub Port Disabled 8 Hub Port Hub Port Disabled 9 Hub Port Hub Port Disabled 10 Hub Port Hub Port Disabled Back to previous menu Enter to confirm lt Ctrl Z gt to back to Main Menu Figure 4 20 Backup Links Menu Menu items are briefly described in the following table Eie TRUE Uv aee T0 Sn Set Identifier for up to 10 backup port pairs Primary Port Pair member serving as the primary link Hub Hub ID for the master port Port Port identifier for the master port Backup Port Pair member serving as the backup link Hub Hub ID for the backup port Port Port identifier for the backup port Port Backup Each backup pair can be set to Enabled or Disabled Enabled Upon failure of the primary link will be utilized Disabled Upon failure of the primary link the backup link will not be utilized Status PRIMARY is displayed if the primary port is currently linked BACKUP is displayed if the primary port is not currently li
114. nked Table 4 16 Backup Links Menu 4 28 Configuring the System HP 100Base T Hubs Installation and Reference Guide System Statistics From the Main menu select Statistics to access all information on system performance Statistics can be displayed for any hub or port in the stack or for the stack as a whole An example menu is shown below HP J3233B AdvanceStack 100Base TX Hub 12TXM Statistics Back to Previous Menu Stack Statistics Hub Statistics Port Statistics Back to previous menu Enter to confirm Ctrl Z to back to Main Menu Figure 4 21 Statistics Menu Menu items are described in the following table Field o iescription UON Stack Statistics Displays network performance for the whole stack Displays network performance for the whole stack Hub Statistics Displays network performance for each hub Port Statistics Displays network performance for each port Table 4 17 Statistics Menu Configuring the System 4 29 HP 100Base T Hubs Installation and Reference Guide Screen statistics are not automatically refreshed from the agent Select Refresh Statistics to update the displayed values The values displayed have been accumulated since the last system reboot Stack Statistics From the Statistics menu select Stack Statistics to access this information An example menu is shown below Back to previous menu Enter
115. nnel Manages up to five hubs using the Stacking Cable The Hub 12TXM can manage up to four other hubs via the management channel in the Stacking Cable Management Features Extensive Management Capabilities An extensive indicator panel for reporting network activity unit configuration and facilitating problem diagnosis Menu driven system configuration can be accessed via a local or remote terminal connection to the hub s serial port using either a standard VT 100 terminal or a PC running a VT 100 console interface The Hub 12TXM with SNMP support for discovery and mapping using the HP AdvanceStack Assistant network management program Provides one serial 9 pin RS 232 port for local and remote out of band network management Product Overview 1 7 HP 100Base T Hubs Installation and Reference Guide e BOOTP support for dynamic address assignment Flash ROM on board the Hub 12TXM for easily updating the SNMP agent using either standard firmware updating software or HP s Download Manager program an agent downloading Windows program Firmware update supported for the Hub 12TXM via out of band Xmodem file transfer through the serial port or TFTP file transfer over the network Installation Features Easy Installation e Flexible installation for desktop or rack standard 19 size e Plug and play design e Self diagnostics e Automatic ID assignment for auto configuration Standards and Architecture Compatibility
116. nput is detected for the defined delay time Configuring the System 4 39 HP 100Base T Hubs Installation and Reference Guide The Console Security menu is shown below HP J3233B AdvanceStack 100Base TX Hub 12TXM Console Security Back to Previous Menu User Passwords User Type User Name Password Admin Guest Console Timeout Status ON Delay Time 10 Minutes Back to previous menu Enter to confirm lt Ctrl Z gt to back to Main Menu Figure 4 31 Console Security Menu Menu items are briefly described in the following table User Passwords Console Timeout User Type There are only two fixed user types Admin and Guest The respective access rights are Read Write and Read Only User Name Password Status Delay Time The login name required for access to the management agent not case sensitive The hubs come with no default user names You must set them To enter the VT 100 Console Interface menu system at the User Name prompt press Enter The password that must be provided with the user name to access the system not case sensitive The hubs come with no default passwords You must set them To enter the VT 100 Console Interface menu system at the Password prompt ress Enter The console lockup feature can be turned on or off The delay time for console timeout can be set for any value in the range of 0 99 minutes Table 4 25 Console Security Menu 4 40
117. nsole interface See the section on Using the VT 100 Console Interface later in this chapter for more information However note that the Hub 12TXM on board configuration functions only provide access to the hub s private MIB Remote In Band You can also make a remote network connection to the Hub 12TXM via the Console Port using the SLIP protocol over TCP IP This connection can only be made with the VT 100 console interface and not HP AdvanceStack Assistant Note that the system functions as a router when you use IP protocol over a SLIP link to the Console Port providing direct access to all attached network resources To establish a SLIP link to the Console Port be sure you first set the hub s serial IP via the VT 100 console interface Note that the hub s serial IP address and it s IP address must be different but both should be on the same subnet When accessing the hub the PC at the remote site must also be configured with the same serial IP address as the hub Note The winsocket used by both Windows 95 and Windows NT supports the SLIP protocol To configure start the Windows Accessories Dial Up Networking and select SLIP as the server type 4 4 Configuring the System HP 100Base T Hubs Installation and Reference Guide Configuring Your System You can configure the HP 100Base T Hubs using the VT 100 console interface On board configuration requires a terminal or a computer running a terminal emulation program as
118. o a terra Dev essere installato un collegamento a terra di sicurezza non interrompibile che vada dalla fonte d alimentazione principale ai terminali d entrata al cavo d alimentazione oppure al set cavo d alimentazione fornito con il prodotto Ogniqualvolta vi sia probabilit di danneggiamento della protezione disinserite il cavo d alimentazione fino a quando il collegaento a terra non sia stato ripristinato Per la messa a terra dei cavi LAN Wi se la vostra LAN copre un area servita da pi di un sistema di distribuzione elettrica accertatevi che i collegamenti a terra di Sicurezza siano ben collegati fra loro WB icavi LAN possono occasionalmente andare soggetti a pericolose tensioni transitorie ad esempio provocate da lampi o disturbi nella griglia d alimentazione della societ elettrica siate cauti nel toccare parti esposte in metallo della rete Nessun componente di questo prodotto pu essere riparato dall utente Qualsiasi lavoro di riparazione messa a punto manutenzione o assistenza va effettuato esclusivamente da personale specializzato Questo apparato non possiede un commutatore principale si mette scotto tensione all inserirsi il cavo d alimentazione E 6 Safety and Regulatory Statements HP 100Base T Hubs Installation and Reference Guide Consideraciones sobre seguridad AN WARNING CAUTION S mbolo de referencia a la documentaci n Si el producto va marcado con este s mbolo consultar la doc
119. om Link indicator does not light up green after making a connection Cause Network interface e g a LAN adapter on the attached device network cable or hub port is defective Solution Check the power cord of both the hub and the attached device and power source connections If connections are secure then try a different outlet or try a different power cord to see if the power cord is the problem Be sure the network cable is plugged into both the hub and corresponding device Verify that the proper cable type is used and its length does not exceed specified limits Chapter 2 Check the LAN adapter on the attached device and cable connections for possible defects Replace the defective LAN adapter or cable if necessary If the problem persists contact your HP authorized reseller Symptom Power indicator does not light up green after power on Cause Defective power outlet power cord or internal power supply Solution Check the power outlet by plugging in another device that is functioning properly Check the power cord with another device If these measures fail to resolve the problem have the unit s power supply replaced by your authorized reseller Use the diagnostic procedures described in Chapter 2 and Chapter 5 to verify that all other system components are Troubleshooting A 1 HP 100Base T Hubs Installation and Reference Guide functioning properly If any component fails the diagnostic test contact your HP
120. omponents The diagnostic tests display results for the HP 100Base T repeater board via the Partition Disable LEDs on the front panel Test results for the Hub 12TXM management agent can only be seen via the VT 100 console interface The following table shows how test results for the repeater board are indicated by the Partition Disable LEDs Partition Disabled Test Function Component __LED Indicator _ of Hub Repeater Board 1 Boot ROM Hub Configuration EEPROM RAM for Repeater Board CPU Repeater Information Base SRAM Repeater Interface Controller Routing Table for Internal Exp Port CO N or Co h5 Input Queue for Internal Exp Port 9 Output Queue for Internal Exp Port 10 Routing Table for External Exp Port _ Input Queue for External Exp Port 11 Output Queue for External Exp Port 12 Table 5 12 Diagnostic Results The system tests each component one at a time The corres ponding indicator will light up ON after test completion to show which component failed the test No light means all the hub components passed the diagnostics State Indication Corresponding hardware component failed the diagnostic test OFF _ Corresponding hardware component successfully passed the diagnostic test Table 5 13 Diagnostic Indicators The HP 100Base T Hubs will complete the test cycle even if a problem is detected on any of the components If all Partition Disa
121. on 4 24 Serial IP 4 15 Speed 4 25 Subnet Mask 4 15 Upload Mode 4 39 User Type 4 40 Configuration program For Hub 12TXM and stack 4 11 Stack 4 11 Configuring the system 4 1 Configuring your system 4 5 Connecting fiber optic cabling 2 8 Connecting hubs to the stack 3 5 Connecting the hub system 2 4 Connecting to a Switch Port Module 2 6 Connecting to MDI Cascade Port 2 6 Connecting to MDI X hub port 2 4 Connecting twisted pair cabling 2 7 Connectivity test 4 41 Console Port 5 5 5 12 Console security 4 39 Console timeout 4 39 Cut through switching 1 10 D Diagnostic tests 2 12 Disable 5 9 Distance limit and power loss in fiber optics 2 9 Downloading system software TFTP server 4 36 Xmodem protocol 4 38 HP 100Base T Hubs Installation and Reference Guide F Filtering packets 1 10 Fash ROM 4 37 Forwarding packets 1 10 H Hardware installation 2 1 Hardware reference 5 1 Hot swap function 2 13 HP 100Base T Hubs 1 1 HP AdvanceStack Assistant 1 4 Hub configuration 4 20 Hub ID configuration 4 22 Hub ID setting 3 2 Hub IDs 5 5 Hub security 4 26 Hub statistics 4 29 4 30 4 31 Hub 12TX 1 3 Hub 12TXM 1 3 Hub 24TX 1 4 Indicator panel 5 2 Indicators 100 5 4 Col 5 4 Collision 5 6 Console 5 5 Diagnostic test 5 10 FDX 5 4 Hub ID 5 5 Isolated 5 5 Link 5 4 Link Traffic 5
122. on Stacking Ports for connecting to multiple hubs in a Hub 12TX Hub 24TX stack via a Stacking Cable On board management via the RS 232 Console Port connected directly to a terminal or to a local or remote computer that provides a standard RS 232 port running a VT 100 console 1 2 Product Overview HP 100Base T Hubs Installation and Reference Guide Hub 12TX Hub 12TXM Fast Ethernet Stackable Hub with 12 100Base TX Ports The Hub 12TX conforms to the IEEE 802 3u hub specification It also collects port statistics and records events for system administration Basic configuration is provided by the VT 100 console interface This hub can be used in a standalone configuration to form a simple LAN networking two to 12 computers using the RJ 45 hub ports Moreover when stacked with other hubs through the Stacking Ports and connected to an SNMP management device e g the Hub 12TXM it can be monitored and controlled through in band or out of band channels Two to five hubs can be stacked and connected together with the Stacking Cable each additional hub correspondingly increasing the stack s collision domain Just one Hub 12TXM placed in a stack is sufficient to manage all other hubs Fast Ethernet Stackable Hub with 12 100Base TX Ports including SNMP Management Support This model conforms to both the IEEE 802 3u hub specification and the Simple Network Management Protocol SNMP It not only functions as a 12 port F
123. on the hub to any device that uses a standard 100Base TX 802 3u RJ 45 compliant network interface such as a workstation or server or also to a router depending on the port type implemented 1 Prepare the network devices you wish to network Make sure you have installed suitable 100Base TX LAN adapters in the end nodes before making a connection to any of the hub s ports You also need to prepare straight through 2 4 Installing the System HP 100Base T Hubs Installation and Reference Guide G Notes 1000 Category 5 shielded or unshielded twisted pair cables with RJ 45 plugs at both ends 2 Connect one end of the cable to the RJ 45 port of the network device and the other end to any available MDI X port on the hub Just remember that if you use Port 12MDI X or Port 24MDI X the cascade port 12MDI 24MDI cannot be used When inserting an RJ 45 plug be sure the tab on the plug clicks into position to ensure that it is properly seated Using the hub in either a stack or a standalone configuration you can network up to 12 or 24 nodes Note that a stack can have up to 120 nodes Do not plug a phone jack connector into the RJ 45 port This may damage the hub Instead use only twisted pair cables with RJ 45 connectors that conform with FCC standards 1 Make sure each twisted pair cable does not exceed 100 meters 2 We advise using Category 5 cable for all network connections to avoid any confusion or inconvenience
124. ood condition B BLINKING visable Indicates the port has been disabled via Console Interface Table 5 11 Partition Disable Indicators Condition Partitioned ON Hardware Reference HP 100Base T Hubs Installation and Reference Guide Partition A port is temporarily partitioned when a line error or too many collisions are detected on the attached collision domain While automatically partitioned the port continues to receive data from the segment However data is not transmitted onto the segment When the problem is corrected or a valid data packet is received through the port it is automatically reconnected When partitioning occurs the port s Partition Disable LED will be continually lit Otherwise this LED should be OFF Disable Disabling a port is the same as manually partitioning it except that you must also manually reconnect it For example to prevent a certain device from accessing the network or to reduce network traffic you may opt to disable the port No incoming packet transmission can occur on a disabled port Ports can be disabled enabled using the VT 100 console interface The Partition Disable LEDs are also used as diagnostic LEDs Please refer to Diagnostic Test Indicators for more information Hardware Reference 5 9 HP 100Base T Hubs Installation and Reference Guide Diagnostic Test Indicators After power on the hub automatically performs a diagnostic test of hardware c
125. ooting A 3 HP 100Base T Hubs Installation and Reference Guide Physical Configuration System Integrity If problems occur after altering the network configuration restore the original connections and try to track the problem down by implementing the new changes one step at a time Ensure that cable distances and other physical aspects of the installation do not exceed 100Base TX specifications refer to Chapter 2 As a last resort verify the hub s integrity with a power on reset Turn the power to the hub off and then on several times If the problem still persists and you have completed all the preceding diagnoses then contact your HP authorized reseller for further assistance Refer to Appendix F Troubleshooting Appendix B Pin Assignments RJ 45 Port RJ 45 station ports MDI X can be attached to any devices that lt gt usea standard network interface e g a workstation or server RJ 45 cascade ports MDI can be cascaded to a station port on similar networking devices e g another switch or router Use unshielded twisted pair UTP or shielded twisted pair STP cable for RJ 45 connections 100Q Category 3 4 or 5 cable for 8 7 1 Hub Cable f 10 Mbit s connections or 100Q Category 5 cable for 100 Figure B 1 Mbit s connections Also be sure that the length of any twisted RJ 45 Connector pair connection does not exceed 100 meters on the Hub Side
126. pieza alguna susceptible de reparaci n por parte del usuario Todas las reparaciones ajustes o servicio de mantenimiento debe realizarlos solamente el t cnico Este producto no tiene interruptor de potencia se activa cuando se enchufa el cable de alimentaci n Safety and Regulatory Statements E 7 HP 100Base T Hubs Installation and Reference Guide Safety Information Japanese REEDE JE Res vza BN RuiclouumowvcoeSfie o v A LBRL PERRIS S OCRE EO WARNING zay pho WARNING UAE REEOIRIN 72 51 828 L3 CAUTION cay vio TCAUTION I2 ETH OOJRCA ERD fal ze BLES WARNING CAUTION OHIRI S ZR CS BRAKES WY FERRE BR OsdEXH4 mS TEL FICE Fe ECU OqIBUOEATSSI SU Ld F A IOR m CRR bii TRA COE EER OBO AJ fom Ea R RCE ORA R ey h ETOR WNHORVEA Butiifete SOL MAMECT 6 UL IOBGERURDWRIRIUCI LAHEND LE n HABE S 1S KR CA FAA UTRW TC KEY LAN 7r 7Z v o flic B LC LEHO LAN 2318 E OW TAE AICEY SHES CO OS UE A R UW SBI XXVbOUDATGGO AB DSESE Gc TEC CS RENTOJ L EMRLTILEEO LAN ZIF L UCR EE MARES NBR MOE Aj coms CE DENDZ LDV ET RH LIERE ORRO CAHIER DoT EEN EO ACIE 3 AMERECE SMSO EEA POE AL E REFERE CE E RIRE SEO Te ERIC R EAMES TES ARNT AT v FIR ORCA BI PERL ES BRA LVEF Safety and Regulatory Statements HP 100Base T Hubs Installation and Reference Guide Safety Information Chinese HP 28 de Fe FE
127. pported Number of Ports Indicator Panel Switching Criteria Network Bridging Function Switching Method Maximum Filtering Rate Maximum Forwarding Rate Network Latency Address Table Queue Buffer Up to 5 modules 120 ports Stacking Cable Automatic hub ID and bus termination Supports hub isolation from the stack CSMA CD 100 Mbit s IEEE 802 3u 100Base TX FX 10 100Base TX 10 or 100 Mbit s via auto sensing 100Base FX 100 Mbit s only Full or half duplex for 10 100Base TX via auto negotiation 100Base FX via manual configuration 100Base TX 1000 twisted pair 2 pair Cat 5 for 100 Mbit s or Cat 3 4 5 for 10 Mbit s 100Base FX 50 125 um or 62 5 125 um multimode fiber wavelength equals 1300 nanometers 2 100Base TX RJ 45 ports 1 MDI 1 MDI X or 1 100Base FX SC type port Comprehensive array of LEDs for displaying port link collision traffic transmission speed transmission mode filtering forwarding and learning adaptive cut through cut through fragment free cut through and store and forward line speed line speed less than 20 microseconds 4K entries port 160K bytes Product Specifications Appendix E Safety and Regulatory Statements This chapter covers the following topics H mounting precautions WB power precautions Wi safety and regulatory statements Mounting Precautions When you put a hub into a rack follow these mounting precautions The rack or cabinet should be ade
128. pports a hot swap feature which permits you to connect disconnect Stacking Cables without powering off the hub and without disrupting the operation of the hubs in the stack However when changing Switch Port Modules first disconnect power to the concerned hub Diagnostic Tests Upon power on the system performs an internal self diagnostic test of major hub components If any component fails during the test the hub will try to complete the diagnostic procedure Otherwise the system will halt For related information refer to Diagnostic Test Indicators in Chapter 5 Note You can run system diagnostics at any time via the VT 100 console interface by selecting Restart the Agent option However when testing begins the system leaves normal operation If no problem is encountered by diagnostics the system automatically returns to normal operation 2 12 Installing the System HP 100Base T Hubs Installation and Reference Guide Hot Swap v The HP 100Base T Hubs support a hot swap capability that allows you to connect disconnect hubs or media connectors from the system with minimal disruption to the network You can remove any network cabling without affecting traffic passing across the internal repeater bus However if the Stacking Cable is disconnected at any point in the stack or is not properly terminated all Ethernet and management traffic passing through the cable will be disrupted When changing modules in t
129. quately secured to prevent it from becoming unstable and or falling over The first hub or single hub should be mounted in a position toward the bottom of the rack for stability and to make it easier to stack the other hubs on top Before mounting a hub plan its location and orientation relative to other devices and equipment Also consider the cabling that will be attached to the hub and the ports that will be used Verify that there is room for the grouped cables to trail out from the side of the hub Allow at least 2 54 cm 1 inch in the front of the hub At the back of the hub allow at least 3 8 cm 1 1 2 inches of space for the power cord Ensure that HP 100Base T Hubs do not overload the power circuits wiring and over current protection To determine the possibility of overloading the supply circuits add together the amperage ratings from the nameplates of all your hubs and other equipment installed on the same circuits and compare the total with the rating limits for the supply circuits Make sure that the power source circuits are properly grounded then use the supplied power cord to connect the HP 100Base T Hub to the circuit See the Safety Statements in this chapter Do not install the hub in an environment where the operating ambient temperatures might exceed 55 C 131 F Make sure the air flow around the sides of the hub is not restricted Safety and Regulatory Statements E 1 HP 100Base T Hubs Installation a
130. r Select the Hub Configuration option from the System Configuration menu and press Enter Then select a hub from the Hub Selection menu and press Enter The system displays the Hub Configuration screen In the Isolate field press Enter and then use lt Ctrl N gt to change the setting to Yes Then press Enter to save the new value See Chapter 4 for more details on using the VT 100 console interface For the Hub 12TX Hub 24TX enter the command i in the Status section of the Main Configuration menu then press y to confirm the change of isolation status Press Enter to save the new value 7 Connect isolated hubs to the stack s main collision domain You may do this in one of two ways If you have an optional 10 100TX Switch Port Module you can connect an isolated hub to other hubs in the stack while still segmenting the collision domains using one of the following two methods Install the Switch Port Module in the isolated hub in the stack Run a connection from the 100Base TX port on the optional 10 100TX Switch Port Module on this hub to any station port on a non isolated hub in the stack Make sure you connect to an MDI port on the hub if you are running off the MDI X port on the module or vice versa Quick Installation HP 100Base T Hubs Installation and Reference Guide Install the Switch Port Module on a non isolated hub in the stack and run a connection from the Switch Port Module to a station port o
131. resolution for medium to large interconnected local and wide area networks Contact your HP Authorized Reseller or the nearest HP Sales and Support Office for more information e HP SupportPack LAN Support provides assistance with NOS usage fault isolation and problem resolution for small to medium LANs available in 5 and 10 incident packages Contact your HP Authorized Reseller or the nearest HP Sales and Support Office for more information F 2 Product Support Services Glossary 100Base TX IEEE s specifications for 100Mbit s Ethernet using 2 pairs of Category 5 twisted pair cable The HP 100Base T Hub models require 1000 STP or UTP cable 100Base FX IEEE Ss specifications for 100Mbit s Ethernet using multimode fiber optic cable The 100FX Switch Port Module must be used to support fiber optic cable with SC type connectors BOOTP Boostrap protocol used to load the operating system for devices connected to the network Cascade Port An MDI RJ 45 port used to connect compatible devices in a daisy chain configuration using straight through twisted pair cable To cascade two devices either run a connection from the cascade port on one device to a station port on the other device or cascade the two devices by running crossover cable between MDI X station ports on both devices Remember that the HP 100Base T Hub is a Class I Fast Ethernet Repeater and cannot be cascaded to another device in the same collision domain Coll
132. ricity 4 Remove the module from the anti static shielded bag 5 Holding the module level gently insert the module ensuring that it engages the guides Then insert it all the way 6 If you are sure the module is properly mated with the connector replace the retainer screws to secure the module in the Expansion Slot 7 Run the corresponding media type between the Switch Port Module and the target device Connecting Twisted pair Cabling For the 10 100Base TX module prepare Category 5 straight through twisted pair cables with RJ 45 plugs at both ends When connecting the module directly to an end node device e g a workstation or file server a bridge or router run cable from the MDI X port on the Switch Port Module to the target device However when connecting the module to a hub or switch connect one end of the cable to the MDI port on the module and the other end to an MDI X port Installing the System 2 7 HP 100Base T Hubs Installation and Reference Guide on the target device or vice versa When inserting an RJ 45 plug be sure the tab on the plug clicks into position to ensure that it is properly seated Note that the length of twisted pair cable should not exceed 100 meters Connecting Fiber Optic Cabling For the 100Base FX module prepare fiber optic cable with SC type connectors at both ends When connecting the module directly to an end node device e g workstation or file server run cable from the Rx
133. rity bits and 1 stop bit Then dial in to the hub If the screen is blank press the Enter key several times until the login screen appears If diagnostic messages indicate a failure refer to Troubleshooting in Appendix A Once the connection has been properly established the login screen for the on board configuration program should appear 2 The login procedure for the Hub 12TX Hub 24TX VT 100 console interface requires no password or user name although the VT 100 Console Interface does display a password prompt Simply press Enter to enter the VT 100 Console Interface menu system Access privileges are Read Write and the default password is blank 1 e no password has been pre configured You can set a password if you want by using the Change Password option in the Main Menu When logging into the Hub 12TXM there are two fixed user types Admin and Guest The Administrator account has read write access and the Guest has read only access You must provide both a user name and password to log in however for initial configurations both the user name and password is blank Just press the Enter key Administrator is the highest privilege level in the Hub 12TXM VT 100 console interface The administrator should define a password record it and put it in a safe place If you have not already done so select User Passwords under the Console Security menu in the VT 100 console interface and enter a password The configuration parameters
134. rward in which the entire frame must be received before the device can perform a table look up for the destination node and forward the packet to the corresponding port As a result each packet experiences a significant delay It may be necessary to use store and forward when a lot of data errors are occurring over the network or when connecting to very slow devices Compared to this safe mode of operation cut through switching significantly reduces packet transmission delay by picking the destination address out of the header as soon as it is received and directing the frame to the appropriate segment or the backbone long before the full packet has been received The remaining technique employed to improve data reliability is called fragment free cut through It uses a more conservative approach to cut through that waits until the collision window has elapsed i e the first full 64 bytes have been received before processing the packet This prevents runts from being passed along effectively cleaning up the data stream Product Overview 1 11 HP 100Base T Hubs Installation and Reference Guide Although cut though switching is recommended as the fastest method for most applications the other methods mentioned above are also supported by the Switch Port Modules to guarantee flawless performance To ensure that you can manage any kind of network load the modules use adaptive cut through switching based on an algorithm This
135. s i e code group errors including collision artifacts or transmission errors Note that these errors are unique to 100Mbit s analog signals Table 4 20 Port Statistics Menu Symbol Errors 4 34 Configuring the System HP 100Base T Hubs Installation and Reference Guide Statistics for Switch Port Module Statistics for the Switch Port Module include the basic Ethernet variables shown below Screen statistics are not HP J3233B AdvanceStack 100Base TX Hub 12TXM automatically refreshed from the agent Select Refresh Statistics Exp Slot Statistics to update the displayed values 1 The values displayed have been m Refresh Statistics accumulated since the last sE dpud Position r X system reboot In Frames f 1356777 CRC Errors 26 In Octets 327000798 Frames Too Long 0 In Discarded E 160751 Runts 20 Out Frames 7642 Collisions 1228 Out Octets i 763166 Out Discarded E 64 Back to previous menu Enter to confirm lt Ctrl Z gt to back to Main Menu Figure 4 27 Exp Slot Port Statistics Menu Displayed items are briefly described in the following table Field Description Hub ID Hub identifier within the stack Position The physical position in stack as determined by its position from the top of the Stacking Cable In Frames Number of frames received In Octets Number of octets received In Discarded Number of frames received and filtered Out Frames Number of frame
136. s of the HP 100Base T Hubs 1 7 Features of HP AdvanceStack Switch Port Modules 1 9 Data Switching with the Switch Port Modules 1 10 Switching Technology 1 10 Configuration Options for the Switch Port Modules 1 10 Switching Methods 1 11 Chapter 2 Installing the System 2 1 Pre Installation Requirements 2 1 Hardware Installation 2 2 Stacking Hubs without a Rack 2 2 Mounting Hubs in a Rack 2 3 Connecting the Hub System 2 4 Making a Connection via an MDI X Hub Port 2 4 Connecting the Stacking Cable 2 5 Making a Connection via the MDI Cascade Port 2 6 Connecting to a Switch Port Module 2 6 Powering on the Hub 2 12 Diagnostic Tests 2 12 Hot Swap 2 13 Configuring a Manageable Stack 2 13 Installing an SNMP Backup Agent 2 13 Verifying Port Status 2 14 Verifying System Operation 2 14 Contents xi HP 100Base T Hubs Installation and Reference Guide Chapter 3 Setting up Network Connections Special Architecture Used for the HP 100Base T Hubs Isolation Architecture Stacking Cable Management Channel Hub ID Setting Using Management Agents SNMP Backup Agent Backup Links Function Security Features Intrusion Protection Sample Network Configurations Connecting Hubs to the Stack Isolating Specific Hub Connections Isolating Multiple Hubs Extending the Network with Alternate Connections Linking the Stack to a Management Station Interconnecting Isolated Collision Domains Connecting Remote Stacks Connecting to the Extended Network Chapter 4 Confi
137. s transmitted Out Octets Number of octets transmitted Out Discarded Number of frames transmitted and filtered i e hub Exp Slot interface CRC Errors Number of Ethernet Cyclic Redundancy Check errors Frames Too Lon Number of times frame length has exceeded the maximum allowable size i e 1518 bytes Runts Number of fragments Collisions Number of simultaneous node transmissions detected by this module Table 4 21 Exp Slot Port Statistics Menu Configuring the System 4 35 HP 100Base T Hubs Installation and Reference Guide Downloading System Software Select Download from the Main menu to download new firmware updates into the hub You may upgrade firmware from a server attached to the local network via TFTP or remotely via a serial link using Xmodem An example of this menu is shown below HP J3233B AdvanceStack 100Base TX Hub 12TXM Download Back to Previous Menu TFTP Download Xmodem Download Back to previous menu Enter to confirm lt Ctrl Z gt to back to Main Menu Figure 4 28 Download Menu Displayed items are described in the following table pied scription S TFTP Download Downloads new version of firmware to update your system via network Xmodem Download Downloads new version of firmware to update your system via Console Port Table 4 22 Download Menu Downloading System Software via a TFTP Server Use the TFTP Download command under the Download
138. t _OFF OFF SNMP agent is not installed or has failed Table 5 5 Management Mode Indicators 5 4 Hardware Reference HP 100Base T Hubs Installation and Reference Guide Hub ID Console Isolated ON Agent has a valid RS 232 serial port or Telnet connection to a management console and a user is logged in OFF _No user is logged in via a management console connection Color Green Function Indicates Unit ID Setting In a stacked system with a Hub 12TXM present each hub unit has a unique ID The HP 100Base T Hubs are equipped with a function that automatically sets the hub ID freeing the user from this task The unit s Hub ID LED indicators are marked 1 2 3 4 5 In normal operation one LED will display a steady light to indicate each hub s ID while in configuration mode the LEDs will blink Color Green Function Indicates a connection to a management console Indication Table 5 6 Console Indicator Color Green Function Indicates the hub is isolated from the collision domain of the stack LED Activity Indication ON Hub is isolated from the stack OFF Hub is attached to the collision domain of the stack Table 5 7 Isolated Indicator Hardware Reference 5 5 HP 100Base T Hubs Installation and Reference Guide Utilization 96 Collision 96 Color Green and yellow Function Indicates the percentage of network bandwidth currently utilized Label 96 Color Funct
139. tacking Cable which contains a management channel The management link in a chain of cascaded hubs must be connected to discover and place the stack in an HP AdvanceStack Assistant Topology View At most five hubs can be managed and linked together using the Stacking Cable connection In a stacked system each hub should have a unique ID number to identify itself Each hub automatically sets an ID number if attached to an SNMP management agent i e Hub 12TXM through the Stacking Port When a new hub is inserted in the stack the next available hub identifier is assigned to the new hub i e the identifier numbers are not changed for previously configured hubs When the stack includes a management agent you can also set hub IDs using the VT 100 console interface Refer to the section on the VT 100 console interface screen Hub Configuration in Chapter 4 for more information 3 2 Setting Up Network Connections HP 100Base T Hubs Installation and Reference Guide Using Management Agents The Hub 12TXM includes an SNMP management agent To add SNMP functionality to an entire stack a Hub 12TXM must be included in the stack You may include multiple agents in a stack to provide a fail safe backup management agent SNMP Backup Agent The HP 100Base T Hubs system supports a backup function for the management agent This special function allows the stack to have two or more SNMP network management agents wherein one agent is config
140. tective earthing terminals There must be an uninterruptible safety earth ground from the main power source to the product s input wiring terminals power cord or supplied power cord set Whenever it is likely that the protection has been impaired disconnect the power cord until the ground has been restored For LAN cable grounding WB If your LAN covers an area served by more than one power distribution system be sure their safety grounds are securely interconnected Bl LAN cables may occasionally be subject to hazardous transient voltages such as lightning or disturbances in the electrical utilities power grid Handle exposed metal components of the network with caution There are no user serviceable parts inside these products Any servicing adjustment maintenance or repair must be performed only by service trained personnel These products do not have a power switch they are powered on when the power cord is plugged in Safety and Regulatory Statements E 3 HP 100Base T Hubs Installation and Reference Guide Informations concernant la s curit AN WARNING CAUTION Symbole de r f rence la documentation Si le produit est marqu de ce symbole reportez vous la documentation du produit afin d obtenir des informations plus d taill es Dans la documentation un WARNING indique un danger susceptible d entrainer des dommages corporels ou la mort Un texte de mise en garde intitul CAUTION indique
141. tested by auto negotiation then you must manually set the transmission mode for the concerned port to full or half duplex via the VT 100 console interface Chapter 4 The transmission mode for the 100Base FX module must be set manually as the 100Base FX standard does not support auto negotiation Bridging Functions The Switch Port Modules form a separate collision domain from the rest of the ports in the stack They therefore provide fully transparent or learning bridging functions which enable the module to automatically learn node addresses required to filter and forward traffic based on the destination address 1 e traffic 1s filtered 1f the destination 2 10 Installing the System HP 100Base T Hubs Installation and Reference Guide address is in the local collision domain or forwarded if the destination is in a remote collision domain Note Devices connected to the Switch Port Module exist in a separate collision domain and cannot be controlled by a management agent in the stack Switching Functions These modules also provide functions commonly found on an Ethernet switch The scheme used to process data packets is automatically adjusted to optimize system performance Cut through fragment free cut through or store and forward processing may be used depending on the current error rate Refer to Data Switching with the Switch Port Modules in Chapter 1 for a detailed discussion of these processing methods In a
142. tion to an external device Speed The 10 100Base TX module relies on auto sensing to set the speed at 10 or 100 Mbit s while the 100Base FX module is fixed at 100Mbit s Admin Status The Switch Port Module port may be manually configured as ENABLED or DISABLED Oper Status The state of the Switch Port Module port as configured in Admin Status Duplex Mode The available options are 10 Half Duplex 10 Full Duplex 100 Half Duplex 100 Full Duplex and Auto Negotiation The Switch Port Modules for 10 100Base TX and 100Base FX can be manually set to half duplex or full duplex The 10 100TX Switch Port Module can also be set to auto negotiation Duplex In Use The Switch Port Module for 10 100Base TX can auto negotiate to half or full duplex Back Pressure When the internal buffers on this port begin to fill it can be configured to signal the connected device to slow transmission by setting this field to ENABLED The scheme by which frames are processed and forwarded through this module can be set to Forwarding Mode Adaptive Cut through or Store and Forward Adaptive cut through will dynamically change from Cut through to Fragment free Cut through to Store and forward depending on the current error rate Table 4 14 Exp Slot Port Configuration Menu Forwarding In Use Configuring the System 4 25 HP 100Base T Hubs Installation and Reference Guide Port Intrusion Control Select Port Intrus
143. ts own collision domain When connecting to a shared collision domain i e another hub set the transmission mode for half duplex Depending on your network configuration you may attain better performance by making a direct connection from the HP 100Base T Hub to an interconnection device rather than using a Switch Port Module Making a connection from a Switch Port Module may introduce slightly more delay vi Quick Installation HP 100Base T Hubs Installation and Reference Guide e Make sure you connect the stack main collision domain to the extended network If you have hubs in the stack that are isolated be certain to use a station port of a hub that is NOT isolated in order to connect the stack collision domain to the extended network e f you are inserting a Hub 24TX into a stack of Hub 12TX Hub 12TXMs that has been running an existing firmware revision make sure to download the latest version of firmware so that your devices will be compatible and can connect with one another with no problems See the section on the Xmodem Download VT 100 Interface console screen in chapter 4 for more information about firmware downloads e A network management station on the extended network should be able to access a Hub 12TXM in the stack in order to manage all the devices in the stack s collision domain Make sure that the Hub 12TXM is NOT isolated it should be in the stack s main collision domain and connected to the ext
144. ub ID Hub identifier within the stack Position The physical position in the stack as determined by position from the top of the Stacking Cable Port ID Port identifier on the hub Readable Frames Number of good frames received Readable Octets Number of good octets received CRC Errors Number of Ethernet Cyclic Redundancy Check errors Alignment Errors Number of mis synchronized data packets detected by this device Frames Too Long Number of times frame length has exceeded the maximum allowable size i e 1518 bytes Short Events Number of short fragments Runts Number of fragments that were too long to qualify as short events Collisions Number of simultaneous node transmissions detected by this port Late Events Number of frames where a collision occurred late in the transmission Data Rate Mis Number of frames for which the data rate does not match the local frequency Auto Partitions Number of times this port has been automatically partitioned due to jabber Total Errors Total number of errors including CRC alignment FramesTooLong ShortEvents LateEvents Jabber and DataRateMismatches detected on this port Last Source Addr Last source address LSA Most recently recorded address of device that generated the most recent packets seen on the port LSA Changes Number of times the source address has changed Number of symbol error
145. umentaci n del producto a fin de obtener mayor informaci n sobre el producto Una WARNING en la documentaci n sefiala un riesgo que podr a resultar en lesiones o la muerte Una CAUTION en la documentaci n sefiala un riesgo que podr a resultar en aver as al equipo No proseguir despu s de un s mbolo de WARNING o CAUTION hasta no haber entendido las condiciones peligrosas y haber tomado las medidas apropiadas Este aparato se enmarca dentro de la clase I de seguridad y se encuentra protegido por una borna de puesta a tierra Es preciso que exista una puesta a tierra continua desde la toma de alimentaci n el ctrica hasta las bornas de los cables de entrada del aparato el cable de alimentaci n o el juego de cable de alimentaci n suministrado Si existe la probabilidad de que la protecci n a tierra haya sufrido desperfectos desenchufar el cable de alimentaci n hasta haberse subsanado el problema Puesta a tierra del cable de la red local LAN B Sila LAN abarca un rea cuyo suministro el ctrico proviene de m s de una red de distribuci n de electricidad cerciorarse de que las puestas a tierra est n conectadas entre s de modo seguro E Es posible que los cables de la LAN se vean sometidos de vez en cuando a voltajes moment neos que entrafien peligro rayos o alteraciones en la red de energ a el ctrica Manejar con precauci n los componentes de metal de la LAN que est n al descubierto Este aparato no contiene
146. un danger susceptible de causer des dommages l quipement Ne continuez pas au del d une rubrique WARNING ou CAUTION avant d avoir bien compris les conditions pr sentant un danger et pris les mesures appropri es Cet appareil est un produit de classe I et poss de une borne de mise la terre La source d alimentation principale doit tre munie d une prise de terre de s curit install e aux bornes du c blage d entr e sur le cordon d alimentation ou le cordon de raccordement fourni avec le produit Lorsque cette protection semble avoir t endommag e d brancher le cordon d alimentation jusqu ce que la mise la terre ait t r par e Mise la terre du c ble de r seau local Wi si votre r seau local s tend sur une zone desservie par plus d un syst me de distribution de puissance assurez vous que les prises de terre de s curit soient convenablement interconnect es WB Les cables de r seaux locaux peuvent occasionnellement tre soumis des surtensions transitoires dangereuses telles que la foudre ou des perturbations dans le r seau d alimentation public Manipulez les composants m talliques du r seau avec pr cautions Aucune pi ce contenue l int rieur de ce produit ne peut tre r par e par l utilisateur Tout d pannage r glage entretien ou r paration devra tre confi exclusivement un personnel qualifi Cet appareil ne comporte pas de commutateur principal la mise sous t
147. ured as the Master agent and others as Backup agents The agent in backup mode behaves as a Hub 12TX Hub 24TX But if the Master agent fails the Backup agent takes over its functions using the latest data mirrored from the Master including its IP address Note that to manage the stack out of band after the Backup has assumed control you must plug your PC or modem into the serial port of the Backup agent If you are using HP AdvanceStack Assistant just ensure that your network management station can access the new control agent via its current network connection Note Placing redundant agents in a stack will cause the system to set the agent at the top of the Stacking Cable chain as the Master and the others as Backups If more than one backup exists in a stack the backup agent higher up the Stacking Cable chain will be chosen to function as the Master if it fails Moreover if a new agent is added to the top of the Stacking Cable chain the system will set this as the Master and mirror the latest data from the agent with the longest up time Setting Up Network Connections 3 3 HP 100Base T Hubs Installation and Reference Guide Backup Links Function Notes Security Features The HP 100Base T Hubs system supports a backup link function i e a redundant link provided a Hub 12TXM is included in the stack A hub system can have up to 10 pairs of Backup Links These links are configurable using the VT 100 console interfac
148. vided with this Software The Software may only be used with such products Use means storing loading installing executing or displaying the Software You may not modify or disable any licensing or control features of the Software Ownership The Software is owned and copyrighted by HP or its third party suppliers Your license confers no title or ownership in the Software and should not be construed as a sale of any rights in the Software HP s third party suppliers may protect their rights in the event of any violation of these terms Copies and Adaptations You may only make copies or adaptations of the Software for archival purposes or when copying or adaptation is an essential step in the authorized Use of the Software You must reproduce all copyright notices in the original Software on all authorized copies or adaptations You may not copy the Software onto any bulletin board or similar system No Disassembly or Decryption You may not disassemble decompile or decrypt the Software unless HP s prior written consent is obtained In some jurisdictions HP s consent may not be required for disassembly or decompilation Upon request you will provide HP with reasonably detailed information regarding any disassembly or decompilation Transfer Your license will automatically terminate upon any transfer of the Software Upon transfer you must deliver the original and all complete partial or electronically stored copies of the Software and relat
149. will be repeated Timeout in Seconds The maximum time allowed for a test packet to be sent and returned Successes The number of logged successful tests Failures The number of logged failed tests Start Test Start connectivity tests Stop Test Stop connectivity tests Table 4 27 IPX Ping Test Menu Configuring the System 4 43 HP 100Base T Hubs Installation and Reference Guide The Link Test menu 1s shown below HP J3233B AdvanceStack 100Base TX Hub 12TXM Link Test Back to Previous Menu Destination Station Address 000000 000000 Number of Repetitions 1 65535 0 Timeout in Seconds 1 100 0 Successes 0 Failures 0 Start Test Stop Test Back to previous menu Enter to confirm lt Ctrl Z gt to back to Main Menu Figure 4 35 Link Test Menu Menu items are briefly described in the following table luz NOE FP pee seme re ese o i OMBRE Destination Station The MAC address of the designated device with which you wish to perform connectivity tests Address Number of Repetitions The number of times a test will be repeated Timeout in Seconds The maximum time allowed for a test packet to be sent and returned Successes The number of logged successful tests Failures The number of logged failed tests Start Test Start connectivity tests Stop Test Stop connectivity tests Table 4 26 Link Test Menu 4 44 Configuring the System HP 100
150. you have a growing network and need help designing it download the Designing HP AdvanceStack Workgroup Networks Guide or call 1 800 752 0900 to receive a copy through mail HP FIRST Fax Retrieval Service HP FIRST is an automated fax retrieval service that is available 24 hours a day seven days a week HP FIRST provides information on the following topics e Product information e Troubleshooting instructions e Technical reviews and articles e Configuration information Product Support Services F 1 HP 100Base T Hubs Installation and Reference Guide To access HP FIRST dial one of the following phone numbers Location Phone Number U S and Canada Only Dial 1 800 333 1917 with your fax machine or touch tone phone and press 1 Outside the U S and Canada Dial 1 208 344 4809 from your fax machine and press 9 To receive a list of currently available documents enter document number 19941 The information you requested will be sent to you by return fax Additional HP Support Services In addition to the above services you can purchase various HP telephone support services which provide you expert HP technical assistance e Network Phone In Support provides you support at an hourly rate In the USA call 1 800 790 5544 In other countries please contact your local HP Response Center to see if this service is available in your country e HP SupportPack Comprehensive Network Support provides complete problem

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