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HP J3188A User's Manual

1. You can connect up to 30 hubs together on a common ThinLAN segment The ThinLAN segment can include a computer attached to a hub at one end of the segment that can communicate with a computer attached to another hub at the other end of the segment By using the BNC port on the module the maximum repeater hop count increment through the entire segment is only two The following illustration shows you how to connect three hubs together from one ThinLAN port to another 50 ohm Hub 16M EY Y 3 Y 3 03 0 3 1 11 ey terminator LL LL LL LL IR LL LL LL L OG ThinLAN coax connecting the hubs together Hub 16U nc ene pente HP AdvanceStack MILCH mm 10Base T Hub 24 50 ohm terminator Note Each ThinLAN cable segment must be terminated using a 50 ohm terminator at each end In the illustration above a 50 ohm terminator is placed at each end of the cable segment 1 10 Installing the Hub Interpreting LED Status Connecting the Hub 16M to a Fiber Optic Backbone With an HP Fiber Optic external transceiver for 10Base FL networks you can connect your hub to a fiber optic backbone The following illustration shows a hub with an HP Fiber Optic external transceiver connected to a fiber optic backbone Fiber optic cab
2. Pins 1and 2 must be a twisted pair Pins 3 and 6 must be a twisted pair Pins 4 5 7 and 8are not used in this application although they may be wired in the cable A 3 SAID pure sore Cables and Connectors Cables and Connectors RS 232 Connector and Cable Pin Outs Note A 4 RS 232 Connector and Cable Pin Outs The Management Module s RS 232 port connector is wired as depicted in the following table Use the RS 232 port to connect a PC to be used as the console To make this connection you must use a null modem cable or you can use the minimum cable pin out described below This appendix lists cables that have been tested and verified for use with the HP Hub 16M It also includes minimum pin out information so if you wish to use an unlisted cable you can verify that the cables used in your installation are correctly wired Note that each pin out does not necessarily match the pin out for the corresponding HP cable but cables manufactured to follow the minimum pin out will function correctly Incorrectly wired cabling is the most common cause of problems for LAN communications HP recommends that you work with a qualified LAN cable installer for assistance with your cabling requirements Cables and Connectors RS 232 Connector and Cable Pin Outs Minimum Cable Pinout for ASCII Console Connection PC end Hub end 9 pin male 9 pin male 2 d 2 Rx 3 3 Tx 3 5 GND RS 232 Modem Cable Modem end Hub en
3. Security Information Understanding Network Security F 1 How Intruder Prevention Works F 2 How Eavesdrop Prevention Works F 2 Authorized MAC address F 2 Setting Inbound Security with Intruder Prevention F 4 Alto PoFtCDISaDIG 2 4 092208 ir RE lp vg actes F 5 SON GA IN er o due de a PRR AW RI CE il c F 5 Setting Outbound Security with Eavesdrop Prevention F 6 Safety and Regulatory Statements Mounting Precautions G 1 Power Precautions G 2 Safety Information rennen G 3 Informations concernant la s curit G 4 Hinweise zur Sicherheit G 5 Considerazioni sulla sicurezza G 6 Consideraciones sobre seguridad G 7 Safety Information J apanese G 8 Regulatory Statements G 9 VII Installing the Hub This chapter describes how to install the hub Topics in this chapter include m installing and configuring the hub m connecting devices to the hub m connecting hubs together m interpreting hub LEDs Installing the Hub Installing the Hub Installing and Configuring Your Hub 1 2 Installi
4. You can assign an authorized MAC address by entering it manually at the hub console interface or atthe network management station Assigning a specific address provides the maximum control of the port s authorized MAC address The Intruder Prevention and Eavesdrop Prevention security that you have configured for that port is implemented as soon as the address is assigned Learning the Authorized MAC address You can set the hub to learn a port s authorized MAC address automatically by using either a first heard or a learn continuous method The method used to learn the authorized MAC address should be chosen based on the level of data security required on a port In each case the security configuration for that port is implemented when the port receives a packet from the attached device It learns the device s address from the source address field in the packet First Heard Method The first heard method automatically assigns the firstaddress detected on the port asthe authorized MAC address This method is useful to quickly identify and authorize end users whose ports may require both Eavesdrop Prevention and Intruder Prevention Under this method the port will be disabled automatically if an intruder is detected on the port Learn Continuous Method The learn continuous method allowsthehub to continuously update the authorized MAC address configured for a port Each new device connected to the port becomes the new authorized devi
5. 1 12 G giant packets definition 3 6 H HElp command 3 4 3 6 3 11 Help command 3 4 HP AdvanceStack SNMP Module LED pattern during self test 2 3 HP Management Module cables for A 1 2 Index hub at a glance iii connecting to fiber optic backbone 1 11 description iii features iv mounting 1 5 reference 1 12 ThinLAN connections 1 9 troubleshooting 2 1 hub operation verifying 1 2 hub to hub network connections with the MDI switch 1 8 IEEE 802 3 Type 10Base T standard iii included parts 1 2 installing the hub mounting procedures 1 5 network connections 1 7 verifying hub operation 1 2 intruder F 4 F 5 intruder prevention F 2 iontelligent partition recovery 3 13 IP address D 2 IP parameters 3 8 IPconfig command 3 7 IPX address D 2 L late collision monitoring 3 13 LED pattern 1 4 LEDs Activity 1 12 AUI Xcvr 1 13 Collision 1 12 diagnosing the hub status 2 2 during self test 1 4 patterns showing error conditions 2 3 Power 1 12 twisted pair ports 1 13 verifying hub operation 1 4 list included parts 1 2 M MAC address use in IPX address 3 8 D 2 MAnagers command 3 9 MDI switch using 1 8 MDI X switch using 1 8 MEssageinterval command 3 11 modem 3 3 configuration C 1 modem cable pin out A 5 monitoring late collis
6. Simbolo di riferimento alla documentazione Se il prodotto contras segnato da questo simbolo fare riferimento alla documentazione sul i prodotto per ulteriori informazioni su di esso WARNING La dicitura WARNINGdenota un pericolo che pu causare lesioni o morte CAUTION La dicituraCAUTION denota un pericolo che pu danneggiare le attrezzature Non procedere oltre un avviso di WARNING o di CAUTION prima di aver compreso le condizioni di rischio e aver provveduto alle misure del caso Questo prodotto omologato nella classe di sicurezza ed ha un terminale protettivo di collegamento 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 m sela vostra LAN copre un area servita da piu di un sistema di distribuzione elettrica accertatevi chei collegamenti aterra di sicurezzasiano ben collegati fra loro m icaviLAN possono occasionalmente andare soggetti a pericolose tensioni transitorie ad esempio provocate da lampi o disturbi nella griglia d alimen tazione della societ elettrica siate cauti nel toccare parti esposte in metallo dell
7. Connect the hub to your network 1 7 Connecting Devices to theHub 1 8 Connecting Hubs Together 1 8 Interpreting LED Status 4 44 444 oes 1 11 Interpreting Hub Status LEDs 1 12 Interpreting Port Status LEDs 1 13 Troubleshooting Troubleshooting Approaches 2 1 Using a Checklist to Diagnose the Hub 2 2 LED Operation iii ES Idee ices Hi sea 2 3 Hub Maintenance Tasks 2 5 Testing the Hub ONIY ss cus EC a 2 5 Clearing a Password for the ASCII Console 2 5 Running Connectivity Tests 2 6 Obtaining Firmware Enhancements 2 6 Managing the Hub Setting up the ASCII Console 3 1 Staruna tie CONSOLE siete pri verda rd llas 3 3 Console Command Reference 3 4 VI Cables and Connectors Recommended Cables nnn nn A 1 Twisted Pair Cable Connector Pin Outs A 3 Twisted Pair Cable for Hub to Computer Network Connection A 3 RS 232 Connector and Cable Pin Outs A 4 Minimum Cable Pinout for ASCII Console Connection A 5 RS 232 Modem Cable cid vi red A 5 Twisted
8. assurez vous que les prises de terre de s curit soient convenablement interconnect es m Les c bles de r seaux locaux peuvent occasionnellement tre soumis des surtensions transitoires dangereuses telles que la foudre ou des perturba tions 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 tension est effectu e par branchement du cordon d alimentation Safety and Regulatory Statements Hinweise zur Sicherheit Hinweise zur Sicherheit Symbol f r Dokumentationsverweis Wenn das Produkt mit diesem Symbol markiertist schlagen Sie bitte in der Produktdokumentation nach um mehr Informationen ber das Produkt zu erhalten WARNING Symbol f r Dokumentationsverweis Wenn das Produkt mit diesem Symbol markiertist schlagen Sie bitte in der Produktdokumentation nach um mehr Informationen ber das Produkt zu erhalten CAUTION Symbol f r Dokumentationsverweis Wenn das Produkt mit diesem Symbol markiertist 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 Gefahrenz
9. primary power source refer to the Cisco RPS User Guide for specific instructions Note If your RPS is the primary power source for the hub disconnect the AC power cord connected directly to the hub for proper operation RS 232 Optional Connect Redundant Power Supply connector If not connecting a Redundant Power Supply cord clip here connect included power cord here and to an alternating current power source Note The hub does not have a power switch it is powered on when the power cord is plugged in HP recommends that you only use one power source at a given time MH SUR Gui Installing the Hub Installing the Hub Installing and Configuring Your Hub 1 4 2 Check the LEDs on the hub s front panel When the hub is powered on it performs a power on self test See the table below for the LED pattern that occurs during the self test Onfor20seconds On for five then enters seconds then Onfor20seconds normal operating enters normal then enters state operating normal operating state state Port LEDS ON for approximately 20 seconds then enters normal operating Fault Security state AUI Activity ON for approximately five seconds then enters normal operating Collision RPS state System Stays ON Note that once you have connected cables to the hub a Port LED stays on if link beat has been detected at the port A Port LED turns off if link beat is not detected The AUI port stays on if i
10. 1 in accordance with EN60825 1 1994 Tested with Hewlett Packard Co products only Roseville May 30 1997 Mille A Mike Avery Regulatory Engineering Manager European Contact Your local Hewlett Packard Sales and Service Office or Hewlett Packard GmbH Department TRE Herrenberger Strasse 130 D 71034 B blingen FAX 449 7031 14 3143 Index Numerics 50 ohm terminator for a ThinLAN cable segment 1 10 A Activity LED 1 4 1 12 2 5 address selection method 3 14 ASCII console 3 1 AUI Xcvr LED 1 13 Authorized MAC address assigning an address 3 15 methods for selecting 3 14 authorized MAC address F 2 assigning F 3 learning F 3 Auto port disable security feature 3 14 3 18 auto port disable security feature F 5 BAckup command 3 5 Backup command 3 5 backup link configuration process E 5 description E 3 identification E 6 indications of activation E 6 limitations E 2 E 4 operational notes E 2 E 4 reactivating the primary link E 7 Backup port 3 5 BOOTP 3 8 D 4 example BOOTP table entry D 5 broadcast packets definition 3 6 C cabinet mounting instructions for 1 5 cables network connections A 2 RS 232 console port A 1 twisted pair connector pin outs A 3 CDpstatus command 3 6 clearing a password 2 5 Collision LED 1 4 1 12 2 3 collision monitoring 3 13 collisions definition
11. 3 6 command 3 9 commands BAckup 3 5 COunters 3 6 Disconnect 3 7 HEIp 3 4 3 6 3 11 IPconfig 3 7 Ping 3 12 POrt 3 13 REset 3 13 RObustness 3 13 SEcure 3 14 SPeed 3 19 STatus 3 19 TEstlink 3 21 configuring a backup link E 5 Connecting a console using a terminal connected directly 3 2 connections hub to hub networking 1 8 network 1 7 connector specifications B 2 Console commands 3 4 connecting a terminal directly 3 2 starting a session 3 1 syntax conventions for commands 3 4 console cables for connecting to RS 232 port A 1 console commands 3 4 console using 3 3 counter definitions 3 6 COunters command 3 6 countries power cords for 1 2 CRC Errors definition 3 6 Index 1 D diagnosing with the LEDs 2 2 diagnostic tests testing the hub only 2 5 DIsconnect command 3 7 E avesdrop prevention configuration 3 15 eavesdrop prevention 3 14 F 2 electrical specifications B 1 electromagnetic specifications B 2 environmental specifications B 1 Ethernet address MAC address 3 8 Ethernet networks iii examples backup links E 3 BOOTP table entry D 5 external power supply 1 2 F Fault LED 1 4 1 12 2 3 features hub iV fiber optic backbone 1 11 firmware enhancements 2 6 first heard method F 3 front of the hub status LEDs
12. B 2 Connectors The RJ 45 twisted pair ports are compatible with the IEEE 802 3 Type 10Base T standard Electromagnetic Emissions Immunity Safety FCC part 15 Class EN 55022 Class A CISPR 22 Class A VCCI Level Complies with Canadian EM C Class A requirements C Complies with Australia New Zealand EM C Class A requirements Seethe Declaration of Conformity for details atthe end of Appendix G Safety and Regulatory Statements in this guide IEC950 EN 60950 CSA950 NOM 019 SCFI 1993 UL1950 Modem Configuration Before installing the modems one attached to the hub and one attached to the terminal PC configure them by either issuing the appropriate AT command or by setting the modem s switches as described in the tables in the rest of this appendix Hayes Smartmodem Optima 28 8 V 34 Hayes ACCURA 288 V 34 FAX Hayes V Series ULTRA Smartmodem 14400 Atthe hub end Issue the following AT command A0101 AT amp FQ2 amp C2 amp D3S0 1 amp W0 if amp C2 gives error use amp CO NextRev AT amp FQ2 amp C1 amp D350 1 amp W0 Atthe user end Issue the following AT command AT amp FW1 amp C1 amp W US Robotics Courier V F C V 34 Atthe hub end Issue the following AT command A0101 AT amp F amp C0S0 1 amp W 0 Next Rev AT amp F amp C1S0 1 amp W 0 At the user end Issue the following AT command AT amp F amp W Megahertz XJ 2288 PCMCIA card modem At the user end Issue the following
13. II Installing the Hub Installing the Hub Installing and Configuring Your Hub Connecting Devices to the Hub To connect a device to the hub push the RJ 45 plug into the RJ 45 jack until the tab on the plug clicks into place HEWLETT i PACKARD MT Eee N i J3188A Ego dog g dg EG o P d 1X X 3x 4X 5X 6X x 8x 9x 10X TX 12X 13X YX 15X 16X MITI mal L RJ 45 Connector unshielded twisted pair cable Category 3 4 or 5 Cat 3 4 maximum distance 100 meters Connecting Hubs Together Twisted P air Cascade Connections To expand your network the hub can be connected to other hubs with straight through cable by using the Media Dependent Interface MDI switch M DI M DI X switch E E I E E I IL 1x 2X 3x 4X Sx 8x x 8x 3x 10x mK 12K 13X 14X 15X 18 x The MDI MDI X switch controls how the signals are sent through the twisted pair cable connected to Port 16 The hub is shipped with the switch in the MDI X position The switch has two positions m Inthe MDI position use Port 16 to connect your hub to another hub In this position the hub reverses the Tx and Rx port pairs for you This allows you to use straight through cable rather than cross over cable to connect two hubs together The cable can be up to 100 meters in length gm IntheMDI X posit
14. Prevention parameters are set to YES when a different device is later attached to the port the new address is registered as an intruder address a security violation has occurred In that case the port is automatically disabled and the Security and affected port LEDs flash An alarm is also sent to the authorized network management station s if the Send Alarm parameter is set to YES m Port Security Off di sables port security This is a convenient way to remove the port security It automatically sets the Send Alarm and E aves drop Prevention parameters to OFF and therefore the Disable Port parameter will also be OFF Send Alarm when intruder detected Configures the hub to send an alarm SNMP trap to a network management station whenever an unauthorized address an intruder is detected on the port Notethat for the alarm to actually besent you must havefi rst used theManagers command to confi gure one or more network managers to rece ve alarms See the Managers command description earlier in this chapter Eavesdrop prevention Configures the hub to prevent the port from hearing data that is intended for another port Only the data packets that have a destination address that matches the port s authorized address are sent to the port If Eavesdrop Prevention is not enabled on all ports the hub functions like a repeater and every packet seen by the hub is forwarded to the non E avesdrop Prevention ports See Appendix F Securi
15. end nodes or other devices A Media Dependent Interface M DI switch for Port 16 which allows you to connect either an end node M DI X position or to cascade a hub M DI position to the port usinga straight through twisted pair cable in both cases Ports 1through 15always are M DI X Port 16has a factory default of M DI X butcan be toggled to an M DI state with the adjacent push button An AUI portin the front of the hub for several types of external transceivers including ThinLAN twisted pair and fiber optic The twisted pair transceiver adds another RJ 45 port for a total of 17 twisted pair ports on the hub The fiber optic transceiver allows you to connect your hub to a fiber optic backbone Hub Status LEDs showing power activity collisions RPS status fault security and port status provide quick easy to read hub status information and troubleshooting help Metal brackets included with the hub that can be easily attached to the hub for mounting the hub in a standard 19 inch telco rack IEEE 802 3 Type 10Base T standard compatibility to support both 802 3 and Ethernet netw orks Advanced embedded SNMP agent code enabling the hub to be managed remotely from a network management station that supports Simple Network Management Protocol SNMP over IP using the configured IP address or Novell NetW are IPX The agentcode also provides HP EASE Embedded Advanced Sampling Environment which samples network data for enhanc
16. hub detects a CRC error for the packet and does not consider it as a security violation Send Alarm Any port may beconfigured to send an alarm trap notification to the network management station when an unauthorized MAC address or a new MAC address is detected on a secure port To usethe send alarm feature you must authorize at least one network management station to receive the trap notifications by enteringthelP or IP X address of the network management station in the authorized managers list Use the Managers command from the hub s console to configure these addresses See chapter 3 Managing the Hub for more information on this command F 5 uona uou UINDOS Security Infomation Security Information setting Outbound Security with Eavesdrop Prevention F 6 Setting Outbound Security with Eavesdrop Prevention E avesdrop Prevention allows a port to receive a packet transmitted on the network as valid data only if the port s MAC address matches the packet s destination address If the port s MAC address does not match the packet destination address the port will receive a packet containing a meaningless data field of alternating 1 s and O s Multicast and broadcast packets are transmitted to all ports unmodified Note that sending a packet containing alternating 1 s and 0 s will continue to allow the port to detect the traffic on the network so that the CSMA CD network requirements are met However the port will
17. method by pressing once In either case you are then prompted for the settings for the Send Alarm and Eavesdrop Prevention parameters as described on the next page 3 17 qnH eun 6u Heren Managing the Hub Managing the Hub Console Command Reference 3 18 m Send Alarm when intruder detected and Eavesdrop prevention These parameters are defined earlier in the chapter under Security Configuration Parameter Definitions The values you select for these parameters will be applied to all the twisted pair ports for which you have selected or retained the address selection method Showing the Security Configuration Enterthecommand SESH to display the security configuration for all ofthe hubs ports A table like the following is presented ADDRESS SELECTION AUTHORIZED EAVESDROP SEND DISABLE Port METHOD ADDRESS PREVENTION ALARM PORT 1 CONTINUOUS 123456 890123 YES NO 2 CONTINUOUS NONE NO NO 3 FIRST HEARD 123456 789012 YES YES YES The vertical bar between Send Alarm and Disable Port indicates that the value for the Disable Port parameter is not directly configurable This parameter is automatically set by the Address Selection Method If the method is either First Heard or Assigned and if at least one of the other security parameters is set to YES the Disable Port parameter will be YES If the method is Continuous the Disable Port parameter is always automatically set to NO Clearing Security Violation Indicator
18. modem and the hub s modem according to the modem instructions 5 Press several times for the gt or Password prompt The baud rate for communication between the hub and the modem is set automatically when you press Enter Starting the Console The console session starts with a display similar to the following the actual version numbers may be different HP J 3188A Hub 16M ROM A 01 00 EEPROM A 01 00 HW A 01 00 Use console commands for hub configuration Enter password If a password has not been assi gned wi th the PAssword command then you are not prompted for your password here If a console sessi on is currently acti ve then you are prompted to break the current acti ve console sessi on A console session is currently active Do you want to break in Y N Y Connecting Enter a console command or HE or for help gt 3 3 qnH eun Eu Heren Managing the Hub Managing the Hub Console Command Reference Console Command Reference Enter at least the first two letters of a command to execute it such as HE for the Help command The Help command displays a screen like the following listing all commands US Hape Tsi Dia Edi mr Cal Tune Help gam opt Al parameter i m gw Poise parane ber los a separater between amp ccceptahle altersaties opties MElp feed ar 7 Irma display this list sf hab comasi er detai lad help fer a specific zzmmamd Hs bup raf iyara a heckep link
19. port LEDs indicating the port is partitioned SEC On A security violation has occurred Security Off Hub security has not been violated Orange Flash Flashes simultaneously with port LEDs indicating the port had a security violation RPS The RPS is providing power RPS The RPS is not providing power green COL Flickering This LED is on while a collision is detected If it appears on Collision continuously with no flicker itis a possible indicatorofa network orange fault or an improperly terminated cable Installing the Hub Interpreting LED Status Interpreting Port Status LEDs The following table provides LED port information State Meaning of LED Twisted pair On Link beat is detected from the attached node ff Port green 0 The portis not receiving the link beat signal from the attached node Slow The port has been auto partitioned This port has been auto Flash partitioned disabled due to excessive collisions This port will reenable when the connected device no longer causes collisions AUI On The AUI port is enabled Port green Off The AUI portis disabled Slow The port has been auto partitioned Flash The slow flash is approximately once every 1 5 seconds 1 13 qnH ap Su II Troubleshooting This chapter describes ways to troubleshoot the hub Topics covered are troubleshooting approaches m using a checklist to diagnose the hub m interpreting the LED pattern du
20. the hub takes place using the network layer protocols IPX for Novell networks or IP for TCP IP networks Which protocol you use depends on the protocol being used by the network management station Additionally if the network management station is on the other side of a router from your hub the protocol you run on both the hub and the network management station depends on which protocol the router can handle Thenetwork layer communications require that the hub have a network layer address This appendix provides some background information on IPX and IP addressing Network Acicdressing Network Addressing IPX Addressing for Novell NetW are D 2 IPX Addressing for Novell NetWare The Novell NetWare network operating system uses a proprietary protocol called Internetwork Packet Exchange IPX The IPX protocol firmware is always available on an HP Hub 16M it becomes active when the hub gets an IPX address The IPX address consists of a network number and a device identification The address is automatically assigned to the hub asfollows no IPX configuration of the hub is necessary m The network number is automatically assigned by a router or file server on the network that is running the IPX protocol m Thedevice identification is the hub s MAC address also known as the Ethernet address or physical address This address is a unique 12 digit hexadecimal number assigned to the hub at the factory IPX Addressing Notes
21. the Hub Managing the Hub Console Command Reference Note 3 10 network management also called SNMP event alarms Thestartofthetable is shown below Up to ten network management stations can be entered into the table Entry 0 zero is used for the all managers allowed entry ID Manager Address IP or IPX Receive Alarms 0 All managers allowed NA The hub is initially shipped with all network management stations allow ed to manage the hub but the all managers entry does not identify where alarms are to be sent Specific addresses must be entered into the table to identify where the alarms should be sent If you want to restrict which management stations are allowed to manage the hub delete entry 0 Then add the allowed management stations with the A command At the interface prompt enter MA the current authorized managers list is displayed and you are prompted to add or delete an entry in the list orto enter E to end your editing To add an entry enter A at the prompt Enter the IP or IPX address of the network management station or enter A to allow all managers to manage the hub then indicate atthe next prompt whether this management station should receive alarms generated by the hub A new entry is added to the list M Essageinterval NEighbor Managing the Hub Console Command Reference Example To add the network management station with IP address 190 40 101 10 to the list and to send alarms to t
22. true the hub s IP parameters must be configured either on a BOOTP server or on the hub through the console interface m Thehub will be managed remotely with a network management product such as CiscoWorks over an IP network a network that uses IP commu nications for example TCP IP m The network cable segments attached to the hub will be tested using the IP Ping test m Telnet access to the hub is desired 3 7 qnH eun 6u Heren Managing the Hub Managing the Hub 3 8 Console Command Reference Configuring for Network Management If the hub is to be managed from a network management station it must use the same networking protocol as the network management station You have these choices m Novell NetWare IPX m IP Using Novell NetWare IPX The HP Hub 16M is designed to automatically use Novell NetWare s IPX protocol If you are using the hub on a Novell NetWare network no configu ration of the hub is required for itto communicate with a network management station that is also using the IPX protocol The hub determines its IP X address automatically from information received from a router or file server that is running IPX on the network and from its own MAC address physical address or Ethernet address See your Novell documentation for more information on IPX communications and addressing Using IP You can use IP by using one of the following methods m using BOOTP by addingan entry for the hub in th
23. A Registration http www apnic net Asia Pacific Network Information Center c o Internet Initiative J apan Inc Sanbancho Annex Bldg 1 4 Sanban cho Chiyoda ku Tokyo 102 J apan For more information refer to Internetworki ng with TCP I P Princi ples Protocols and Architectureby Douglas E Comer Prentice Hall Inc publisher Device IP Configuration List all the manageable devices on your network and their IP configuration Make surethat every device has auniquelP address Make surethatall devices on the network have the same subnet mask The IP configuration parameters are as follows IP Address ThelP address of the hub is written in the format X X X X where each X is a decimal number between 1 and 254 Every IP address on a network must be unique The default value 0 0 0 0 disables IP communications Subnet Mask The bit mask defines which portion of the IP address is the subnet address and is written in the format X X X X The default value is automatically generated and depends on the class of IP address that you entered See your network administrator for the subnet mask address All devices on your IP network must use the same subnet mask address DefaultRouter TheroutinglP address of thenearest router in your network The default is 0 0 0 0 If no routers are in your network enter the IP address of this device D 3 Network Adidressing Network Addressing Using BOOTP D 4 Time To Live The number of IP
24. AT command AT amp F NO amp W ModemConfiguration Modem Configuration Practical Peripherals PM288MT II V 34 Atthe hub end Issue the following AT command A0101 AT amp F0 amp C2S0 1Q2 amp D3 amp W 0 NextRev AT amp F0 amp C1S0 1Q2 amp D3 amp W 0 At the user end Issue the following AT command AT amp FO amp W 0 Intel 14 4EX Atthe hub end Set the A B switch to A Issue the following AT command AT amp FOSRI amp WO Atthe user end Setthe A B switch to A Issue the following AT command AT amp FO amp W 0 Supra FAX 288 Atthe hub end Issue the following AT command A0101 AT amp FO amp C0S0 102 amp D3 amp K3 amp W 0 NextRev AT amp F0 amp C1S0 1Q2 amp D3 amp K3 amp W 0 Atthe user end Issue the following AT command AT amp FO amp W 0 Network Addressing This appendix describes how network address information is obtained and used Topics covered are m Communications Between Hub and Network Management Station IPX Addressing for Novell NetWare IP Addresses for IP and non IP Networks Using BOOTP Communication Between the Hub and Network Management Station The HP Hub 16M can be managed over the network by CiscoWorks network management software Thesehubs can also be managed by any other network management products that comply with the Simple Network Management Protocol SNMP standard and have standard SNMP MIB browser function ality Thecommunication between the SNMP network management station and
25. Because the IP X address is assigned automatically no IPX configuration is necessary therefore no IP X configuration is provided on the hub console interface By default the hub is ready to be managed by an SNMP network management station that is configured for IPX communications IP Addresses for IP and Non IP Networks If you have chosen to manage your hub with an SNMP IP network manager your hub must be configured with an IP address If your network will be connected with other networks that use IP addresses you must use assi gned IP addresses Otherwise you can build your own IP addressing scheme Globally Assigned IP Network Addresses If you intend to connect your network to other networks that use globally administered IP addresses Hewlett Packard strongly recommends that you use IP addresses that have a network address assigned to you There is a formal process for assigning unique IP addresses to networks worldwide Contact one of the following companies Network Addressing IP Addresses for IP and Non IP Networks Country Phone Number E Mail URL Company Name Address United 1 703 742 4777 Network Solutions Inc States Coun questionsQinternic net Attn InterNIC Registration Service i http rs internic net 505 Huntmar Park Drive Asia Pacific Herndon VA 22070 Europe 31 20 592 5065 RIPE NCC Kruislaan ncc ripe net 409N L 1098 SJ http www ripe net Amsterdam The Netherlands Asia Pacific domreg apnic net Attention IN ADDR ARP
26. G HEWLETT PACKARD Installation and Reference Guide HP J 3188A HP 10Base T Hub 16M HP 10Base T Hub 16M J 3188A Installation and Reference Guide Copyright 1997 Hewlett Packard Company AIT Rights Reserved This document contains information which is protected by copyright Reproduction adaptation or translation without prior permission is prohibited except as allowed under the copyright laws Publication Number 3188 90001 Edition 1 July 1997 Applicable Product HP 10Base T Hub 16M J 3188A Trademark Credits MS DOS and Microsoft are U S registered trademarks of Microsoft Corporation Ethernetis a registered trademark of Xerox Corporation CiscoView is a trademark of Cisco Systems Inc 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 FORA 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 Seethe warranty booklet and the registration form included with the product A copy of the spe
27. IKIENZEI COL MIRA RILTUIHAIZIA ANDOSY AF ADORA AMD EE AI HC BENTVAILZHERLTSK e LAN7 7 MARE L L TERBEN OPI AE ACR O FE MORE C D 42 TER 0x3 SR UA ARROBA KIITFRERRIDBOTZELN Am OA BRIT IL 2 NME CE ADD TA PALA BR FRE TEIH E A aliii ze Se Ur T SEP 2 C48 x Zu S KEV AS CHECA 1 FE D ETA BI bee leche BRA L O KT Safety and Regulatory Statements Regulatory Statements Regulatory Statements FCC Class A Statement for U S A Only This equipment has been tested and found to comply with thelimits 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 harmful interference to radio communications Operation of this equipment in a residential area may cause harmful interference in which casethe user will be required to correct the interference at his own expense VCCI Class 1 For Japan Only COREL AUESE SES ETIAM VCCI DEF CE CRAERRRRAREO ORBTAENECERHTOCRR Bea SRCTCCMHYET COBRLRRREN TRNR ER 4 KIERTNACENDUET European Community This equipment complies with ISO IEC Guide 22 and EN55022 Class A with unshielded cables and EN55022 Note With unshielded cables this is a Class A product In a domestic environmen
28. Pair Cable Pin Assignments A 6 Specifications Pi SIG All uctus amni doo aeu dd rU bar La ener uer detis en B 1 RICHE SR SR CET RR RTT B 1 ENVIFONMENtali uon ia Sn SR un dee qoe e ridus B 1 CODPSCLOEFS oo cae escrito ion B 2 EIECKFOMAGRELE uec eoe aaa i Se doa B 2 Modem Configuration Network Addressing Communication Between the Hub and Network Management Station D 1 IPX Addressing for Novell NetWare D 2 IPX Addressing NOTES asirios caca ideas D 2 IP Addresses for IP and Non IP Networks D 2 Globally Assigned IP Network Addresses D 2 Device IPConflgutdtlofi einer tea o o eed ed D 3 Using BOOTP na EA EC der AC d Vc eaae A D 4 TRHeBOOTP Process osa a o epe ES CR XC e RESA D 4 BOOTP Table le EIS caries D 5 Backup Links How Backup Links Work E 1 ICAL OWNS 4 999 0330 90 36 ie bae d ode be dta ed E 2 Additional Notes cari ii AA n E 2 Examples of Backup Links E 3 How the Backup Function Works E 3 Configuring a Backup Link E 5 Configuration Installation Sequence E 5 Identifying the Backup Link E 6 Indications of Backup Link Activation E 6 Reactivating the Primary Link E 7
29. a rete Nessun componente di questo prodotto pu essere riparato dall utente Qualsiasi lavoro di riparazione messa a punto manutenzione o assistenza va effettuato esclusi vamente da personale specializzato Questo apparato non possiede un commutatore principale si mette scotto tensione all inserirsi il cavo d alimentazione Safety and Regulatory Statements Consideraciones sobre seguridad Consideraciones sobre seguridad S mbolo de referencia a la documentaci n Si el producto va mar cado con este s mbolo consultar la documentaci n del producto a 1 fin de obtener mayor informaci n sobre el producto WARNING Una WARNING en la documentaci n se ala un riesgo que podr a resultar en lesiones o la muerte CAUTION Una CAUTION en la documentaci n se ala un riesgo que podria resultar en averias al equipo No proseguir despu s de un simbolo 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 de seguridad y se encuentra protegido por una borna de puesta a tierra Es preciso que exista una puesta a tierra continua desde latoma de alimentaci n el ctrica hasta las bornas delos 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 subsanad
30. and 255 separated by a decimal point This address will be used unless the BOOTP protocol is enabled The default value 0 0 0 0 disables IP communications on the hub when BOOTP is also disabled Subnet mask M ustbe supplied and The bit mask defining which portion of the IP address is the subnet depends on the class of IP address written in the format X X X X All the devices on your network address that has been should use the same subnet mask See your network administrator for entered the correct value Default router 0 0 0 0 The IP address of the nearest IP router in your network If no IP routers are in your network enter the device s own IP address Time to live The number of IP routers a packet is allowed to cross before the packet is discarded Increase this value if the hub will be sending IP packets to a destination that is more than 64 routers away The maximum is 255 M Anagers SHow To configure the list of network management stations that are autho rized to access and manage this hub and to specify which of those stations should receive alarms Use the SHow option to display the current listof authorized management stations without being prompted to editthe list The list consists of the IP or IPX address of the network management station and an indication of whether each management station should receive alarms indications of specific network events that are configured for the hub from qnH eun 6u Heren Managing
31. at initial setup or when you want to change the configuration for all the ports You are prompted whether to continue this process or not If you choose to continue you are then prompted for m Address selection method If you select Firstheard for all ports F learn continuously for all ports C or security Off for all ports O the setting you select will be applied to all the twisted pair ports If you enter F the authorized address for each of the twisted pair ports will be the source address in the first packet received from the attached device If you enter C each of thetwisted pair ports will continuously update the authorized address when the attached devices change If you enter O the security will be turned off for all the twisted M anaging the Hub Console Command Reference pair ports thatis the security parameters will all be setto NO configured address selection methods and learned or assigned addresses are not changed If you select assign Each port E a table like the following is displayed ADDRESS SELECTION AUTHORIZED F C or Port M ETHOD ADDRESS aMAC address 1 CONTINUOUS NONE 2 CONTINUOUS NONE 3 CONTINUOUS NONE For each port enter an address selection method F or C or a specific MAC address or press to retain the current value Continue this process until all of the ports are displayed If you do not want to configure all twisted pair ports note that you can terminate the address selection
32. ble file etc bootptab for an HP Hub 16M would be similar to the following hphub16M ht ether ha 080009123456 ip 190 40 101 22 sm 255 255 255 0 gw 190 40 101 1 vm rfc1048 Definitions of the table entry fields hphub16M ht ha sm gw vm is a user defined symbolic name to help you find the correct section of the bootptab file If you have multiple hubs that will be using BOOTP to get their IP configuration you should use a unique symbolic name for each hub is the hardware type tag For the HP 10Base T hubs set this to ether for Ethernet This tag must precede the ha tag is the hardware address tag Use the hub s 12 digit M AC address is the IP address to be assigned to the hub Enter the address in the dotted decimal format as shown in the example on the previous page is the subnet mask of the subnet in which the hub is installed is the IP address of the default router or gateway that allows the hub to communicate with systems thatare noton the local network segment If there is no default router do no include this tag is a required entry thatspecifies the BOOTP reportformat Forthe HP 10Base T hubs you must set this parameter to rfc1048 Notes for the bootptab file Blank lines and lines beginning with the pound sign are ignored Make sure you include a colon and a backslash V as a continuation indication at the end of each line except the last one Each reco
33. ce This security method is useful for dynamic workgroups that experience frequent changes to end user configuration and but require minimal data security protection In the learn continuous mode the port may be config ured to provide the Eavesdrop Prevention data security and the send alarm security violation notification Underthis method the port will not bedisabled if an intruder is detected F 3 uona uou ALUNOS Security Infomation Security Information Setting Inbound Security with Intruder Prevention F 4 Setting Inbound Security with Intruder Prevention The picture below illustrates the use of inbound security using Intruder Prevention This type of data security allows only one authorized user per port to access the network Theauthorized user is identified by the authorized MAC address of the end node attached to the port Intruder prevention includes an auto port disable data security feature and a send alarm security violation notification feature These features are described on the next page PC 101 PC 202 Intruder In the above illustration the authorized end user is represented by PC 101 and the intruder is represented by PC 202 Intruder For illustration purposes the numbers 101 and 202 are used to represent 12 digit hexadecimal MAC addresses TheHP hub compares the authorized MAC address 101 to the source address of the packet received from the Intruder 202 The hub detec
34. cific warranty terms applicable to this product and replacement parts can be obatined from your Cisco Sales and Service Office or authorized dealer HP 10Base T Hub 16M 3188A HP 10Base T Hub 16M 3188A The HP 10Base T Hub 16M J 3188A is a multiport repeater with 16 twisted pair ports and one AUI port With this hub you can connect computers printers and servers together for file sharing This hub is compliant with the IEEE 802 3 Type 10Base T standard and supports both 802 3 and Ethernet networks The HP Hub 16M follows these two standards by providing these features m lighting the hub s port LED when it detects the connected device is powered on and cable is good m retransmitting data that did not successfully arrive at the destination device collision detection m temporarily disabling a port if a device connected to the port persistently causes problems for the network auto partioning Front of the Hub M DI M DI X switch for System RPS Status Twisted Pair port port 16 status LEDs N HEWLETT PACKARg FT SEC COL ACT MDI X I Hub status LEDs Fault E CM Twisted pair AUI Connectorfor Collision Activity ports nn ransceiver Back of the Hub RPS connector Serial Port Password Reset Button HP 10Base T Hub 16M J 3188A Features Network Connections Easy to Use Design Standards Based Compatibility Other Features Sixteen RJ 45 tw isted pair ports to connect to
35. condition persists call your HP authorized LAN dealer or HP representative for assistance x i The internal power supply is operating properly and the RPS is notbeing used The internal power supply has failed or has been unplugged and the RPS has been activated as the current operating power supply Troubleshooting This LED is not important for the diagnosis Troubleshooting Hub Maintenance Tasks Hub Maintenance Tasks There are several hub maintenance tasks you can perform They include m testing the hub only m clearing a password from the ASCII console m running connectivity tests Each of these tasks is described in the following sections Testing the Hub Only If you believethat the hub is not operating correctly remove and reinsert the power cord for that hub This procedure will cause the hub to complete its power on self test If any error conditions exist in the hub the LEDs should display the condition Clearing a Password for the ASCII Console You can usethe Password Reset button to clear a forgotten console password that was previously configured on the hub The password is configured from the ASCII console Password Reset To clear the password follow these steps 1 Verify the hub has powered up passed power on test and that the System LED is lit 2 Pressthe Password Reset button on the back of the hub for 10 seconds 2 5 Sunooys gt Nos Troubleshooting Trouble
36. correctly record the invalid data packet received as a CRC error An end user attached to an HP hub implementing E avesdrop Prevention data security will normally record a high number of CRC errors on the computer card statistics The illustration on the next page shows the use of outbound data security using Eavesdrop Prevention This type of data security should be enabled on any port that is to receive data on a need to know basis The port must have an authorized MAC address configured and must be connected to only one end user Eavesdrop Prevention may not beused on cascaded ports or ports connected to a network with multi ple end users In the illustration below Server 104 is transmitting a packet destined for PC 101 For illustration purposes the numbers 101 102 103 and 104 are used to represent 12 digit hexadecimal MAC addresses The ports for PC 101 and PC 102 have Eavesdrop Prevention enabled or configured ON Because PC 101 s MAC address matches the packet destination address it receives the packet unaltered However PC 102 s MAC address does not match the packet desti nation address and therefore it receives a useless packet the packet data field contains a meaningless pattern of alternating 1 s and 0 s The port for PC 103 does not have Eavesdrop Prevention enabled and therefore PC 103 receives the packet unaltered from Server 104 Security Information Setting Outbound Security with Eavesdrop Prevention Serve
37. curity violations will not occur If the port was disabled because of a security violation Disable Port YES to re enable the port you must enter the port ON command for that port The Security Clear command does not remove the cause of the security violation for example the wrong device being attached to a port Until the cause is removed the violation can reoccur immediately after issuing the SECL command It may appear as if the violation indication was never cleared SPeed lt new speed gt STatus Change the console port baud rate Normally the baud rate is automatically sensed Use this command if you want to set the baud rate explicitly to 1200 2400 4800 9600 19200 or 38400 You will be prompted to set the terminal s baud rate to the same speed and to press Enter for the prompt Example SP 9600 Sets the baud rate to 9600 To display status information for the hub The status information includes m the time elapsed since the last reset see the Reset command m thehub s MAC address m if anetwork management security violation has occurred the MAC address of the violating network management station 3 19 qnH eun 6u Heren Managing the Hub Managing the Hub Console Command Reference m Redundant Power Supply status e NOT CONNECTED means the RPS is not attached to the device e CONNECTED FAULT means the RPS is attached but is reporting an error e CONNECTED GOOD means the RPS is attached with no e
38. d 25 pin male 9 pin male Signal 2 3 Tx 3 2 Rx 4 e 7 RTS 8 CTS 6 gt 6 DSR I 5 GND 8 I CD OR DCD 20 4 DTR 2 9 RI 23 0 DRS typically on V 24 European modems not connected A 5 SJO29uuo pue sore Cables and Connectors Cables and Connectors RS 232 Connector and Cable Pin Outs Twisted P air Cable Pin Assignments Twisted P air Straight Through Cable Hub End MDI X Computer or Transceiver End MDI Signal Pins Pins Signal receive 1 transmit receive 2 7 2 transmit transmit 3m 3 receive transmit 6 6 receive A 6 Specifications Physical Width 42 5 cm 16 8 in Depth 23 8 cm 9 4 in Height 4 36 cm 1 7 in Weight 8 lbs and 7 oz 8 7 lbs Electrical The hub automatically adjusts to any voltage between 100 127 and 200 240 volts and either 50 or 60 Hz ac voltage 100 127 volts 200 240 volts Maximum current 0 3A max 0 24 max Frequency range 50 60 Hz 50 60 Hz The maximum current ratings represent the current that could be drawn with an external transceiver attached to the hub Environmental Operating Non Operating Temperature 5 C to 45 C 23 F to 113 F 40 C to 70 C 40 F to 158 F Relative humidity 10 to 95 at 40 C 104 F 10 to 90 at 65 C 149 F non condensing Maximum altitude 3 000 m 9 843 ft 3 000 m 9 843 ft Specifications Specifications
39. d For the Good Packets and Broadcast packets display counters twice over a period of one section to see if the value falls in the valid range Disconnect IPconfig Note Managing the Hub Console Command Reference To terminate the console session and reset the console port baud rate to be automatically sensed The command also disconnects the phone link If you accessed the console using modems To set IP Internet Protocol configuration parameters on the hub By default the hub is configured to use BOOTP Internet Boot Protocol to automatically retrieve the IP parameters from a BOOTP server and to enable Telnet access to the hub s console interface Use this command if you want to manually configure the IP address or disable Telnet Thel P confi gurati on must becarefully controlled If each devi ces 1 P address is not uni que on the network severe network performance problems will occur A network administrator should maintain responsibility for the IP settings See Appendix D Network Addressing for information on setting the IP configuration At the end of the process of changing the IP configuration the hub will be reset This terminates the console session and disconnects the phone line if using a modem and resets the console port baud rate to be automatically sensed To restart a console session when the reset process completes press several times for the prompt When to Use IPconfig If any of the following is
40. e BOOTP table on your BOOTP server and enabling BOOTP through the hub s console interface this is the default setting m using the console interface to configure the IP parameters BOOTP is covered in Appendix D Network Addressing To use the console interface to configure the IP parameters enter IP and the following text appears gt P Active IP parameters BOOTP protocol enabled YES Telnet access enabled YES IP address 0 0 0 0 Subnet mask 0 0 0 0 Default router 0 0 0 0 Time to live 64 Change IP configuration Y N The following table explains the IP parameters M anaging the Hub Console Command Reference Parameter Default Value Definition BOOTP protocol YES Keep or set this value to YES if you are using a BOOTP server to provide enabled the IP configuration to the hub By default the hub is configured to automatically seek an IP address from a BOOTP server on the network This is done when the hub is powered on If an IP address is not found the HP Hub 16M will seek an IP address every ten minutes until it finds an IP address Set this value to NO to disable this BOOTP process If you are not using BOOTP to provide the hub s IP configuration you should set this parameter to NO Telnet access YES Determine whether users are allowed to use Telnetto access the hub s enabled console interface IP address The IP address of the hub written in the format X X X X Each X is a decimal number between 0
41. ed diagnostics from a network management Station Extended hub management capabilities providing a full set of management commands thatcan be executed from an ASCII console session These are described later in this document in chapter 3 M anaging the Hub An RS 232 serial port that provides out of band management access including An ASCII console to configure monitor and troubleshoot the hub Variable baud rates on the hub s out of band management RS 232 port and automatic sensing of the selected baud rate when connecting to a terminal device FullV 22bis modem line control for remote out of band management access to the hub Updatable firmware that enables enhancements to be downloaded either froma computer attached to the out of band management port or over the network A Redundant Power Supply RPS connector that enables an RPS to be connected to the hub providing an alternative redundant power source Advanced integrated design including an Intel i960RISC processor 1 megabyte RAM and 512 kilobytes of flash EEPROM for configuration and future upgrade capabilities Contents Installing the Hub Installing and Configuring Your Hub 1 2 1 Verify included parts 1 2 2 Connect the external transceiver 1 2 3 Verify the hub operates correctly 1 2 4 MOUNTING nu cx a E ACER dr RR esie 1 5 5
42. etwork management station or both See SettingInbound Security with Intruder Prevention later in this appendix How Eavesdrop Prevention Works Eavesdrop Prevention stops a computer or other device from seeing network traffic that is not intended for that port When Eavesdrop Prevention is configured on a port the hub compares the port s authorized MAC address with the destination address of any outbound packet If the addresses match the hub concludes that the packet is destined for the computer attached to the port and it sends the packet out through the port unaltered However if the addresses do not match the hub prevents the computer from seeing the packet s contents by substituting a meaningless string of 1 s and 0 s Notethat broadcast and multi cast packets are repeated to all the ports even when Eavesdrop Prevention is acti vated See Setting Outbound Security with Eavesdrop Prevention later in this appendix Authorized MAC address To provide data security on a hub port asingle unique MAC address must be configured as the authorized MAC address for each port You can configure the authorized MAC address either by assigning it or by designating the port to learn it automatically This configuration is performed with the Secure command fromthe hub s console Seethe Secure command description in the chapter on Managing the Hub Security Information How Eavesdrop Prevention Works Assigning the Authorized MAC address
43. fail it is automatically disabled until it can be repaired and re enabled E 3 SUN des Backup Links Backup Links Examples of Backup Links Note Suggestion E 4 When the primary link is repaired you must re enable the primary port It is not re enabled automatically When the primary port is enabled the backup portis automatically disabled and returned to backup mode See Reactivating the Primary Link later in this appendix m Anycombination of media types can be used as a backup link by attaching an external transceiver to the AUI port This port accepts fiber thin coax twisted pair external transceivers For example a thin coax link from the ThinLAN port can act as a backup link to a twisted pair link The hub can monitor only one link The remote device should have no more than 2 backup links connected to it from a monitoring hub If the remote device has more than 2 backup links functioning it may not be able to respond to the test packets fast enough when there is a high level of data traffic on the network segments m This ability to respond may be improved by increasing the time between test packet transmissions on the monitoring hubs For all the backup links in which the remote device is involved the time configured on the monitoring hubs for those links should be increased by one second for each additional backup link beyond two links Add one to this count if the remote device is also functioning as a prima
44. hat allows you to manage the hub using one of the following utilities m an ASCII console m CiscoWorks m any SNMP compliant network management product except HP AdvanceStack Assistant Setting up the ASCII Console You can begin a console session in the hub in the following ways m directly using a serial cable and a terminal or a PC using a terminal emulator remotely using Telnet remotely using a modem and a terminal The HP Hub 16M supports a single console session only If a console session is already running a second console session can override the current console session Managing the Hub Managing the Hub Setting up the ASCII Console Directly Using A Serial Cable and a Terminal To directly connect a terminal to a hub follow these steps 1 Connect an ASCII terminal or a PC emulating an ASCII terminal to the RS 232 port using an RS 232 C null modem cable For pin outs and recommended cables see Appendix A Cables and Connectors 2 Switchontheterminal s power or switch onthe PC s power and startthe terminal emulation program Configure the terminal for 8 bits per char acter 1 stop bit no parity Xon Xoff handshaking and a baud rate of 38400 19200 9600 4800 2400 or 1200 3 Press several times for the gt or Password prompt The baud rate for communication between the hub and the terminal is set automatically when you press Enter Remotely Using Telnet The HP Hub 16M supp
45. hat station the process would appear as follows Add entry A Delete entry D or End changes E A Enter Manager Address or A to allow all managers access 190 40 101 10 Should this manager receive alarms Y N Y Add entry A Delete entry D or End changes E E Current authorized manager list ID Manager Address IP or IPX Receive Alarms 0 All managers allowed NA 1 190 40 101 10 YES To delete an entry specify the ID number in the list corresponding to the network management station to be deleted Example To delete the entry made in the example above the steps would be Add entry A Delete entry D or End changes E D Enter ID of entry to delete 1 Add entry A Delete entry D or End changes E E The table entry with ID 1 would now be a blank line To enter a new value that will indicate how much time in seconds should lapse between transmissions of CDP messages Displays the current interval if no timeis specified Acceptable values are decimal numbers from 5 to 900 seconds The default value is 60 seconds Displays the other devices that are using CDP protocol 3 11 qnH eun 6u Heren Managing the Hub Managing the Hub Console Command Reference PAssw ord Note Ping 3 12 To set or change the password on the hub The Password is used to prevent unauthorized access to the hub from network management stations and through the console interface The hub is initially ship
46. he Hub Managing the Hub Console Command Reference The Late Collision Monitoring option monitors ports for excessive late collisions If monitored ports experience excessive late collisions these ports are disabled See the section on Auto Partitioning in the chapter that provides the Product Description SEcure port SHow CLear gt 3 14 To control or display the hub s security configuration and to clear security violation indicators The lt port gt parameter can be m atwisted pair port number only m XCVR or XC for the AUI port m ALLOrAL for all ports Security Configuration Parameter Definitions The following security parameters are configurable on each of the hub s network ports These parameters are defined on the next two pages m Address selection method or authorized MAC address m Send alarm when intruder detected m Eavesdrop prevention An additional parameter Disable port when intruder detected is set automatically by your selection of the address selection method See Auto Port Disable in Appendix F Security Information on this parameter Address selection method or authorized MAC address This is the method by which the hub automatically learns the address of the device that is authorized to usethe port or you can enter a specific address Thefollowing methods are configurable m Learn Continuously provi des mi ni mum port securi ty default secu rity state The hub learns the address
47. he fifth failure The hub monitors the primary link by sending IEEE 802 2 Test packets at the specified frequency to the specified remote hub If n consecutive Response packets are not returned from the remote hub the primary port is disabled and the backup port is enabled When the primary link is repaired you must re enable the primary port by usingthe Port command Itis not automatically re enabled When the primary port is re enabled the backup port is disabled automatically and returned to backup mode See the appendix on Backup Links This appendix also covers more information on backup links including requirements limitations and sample topologies 3 5 qnH ap Eu Heren Managing the Hub Console Command Reference CDpstatus To enable or disablethe Cisco Discovery Protocol CDP Thecommand takes either an ON or an OFF argument The initial setting is ON ON enables the protocol OFF disables it If no option is chosen the current status is shown COunters To display network activity counters for each network port the hub s Managing the Hub Counter Name Good Packets Collisions Late Collisions CRC Alignment Errors Giant Packets Broadcast Packets SNMP agent and the global count for all ports The port counters are from the IEEE 802 3 Repeater Management Specification They are described below Definition Number of error free packets received Number of times the port was involved in a c
48. in the chapter 3 Managing the Hub wanttoseeifeachcableisconnected Run TEstlink See the command description in correctly chapter 3 M anaging the Hub A user can t send data to another user Use the Connectivity tests in the ASCII console or in CiscoView to testthe cabling The tests are described in this chapter The Fault LED is on Remove the plug on the power cord from the power source and reconnectit If problem persists the device has an internal failure Contact your HP authorized dealer or reseller The Security LED is flashing How dol Usethe ASCII console or CiscoView to view the get it to stop intruder log and clear the security violations Most problems with the hub can be diagnosed using the LEDs on its front panel The following section describes the normal LED pattern during self test and LED patterns that indicate error conditions on the hub Troubleshooting LED Operation LE D Operation The tables on the following pages list the hub s LEDs their possible states and diagnostic tips to resolve any error conditions LED patterns indicating problems Diagnostic Tips Power Ca onu see ra Verify that the power cord is plugged into an active power source and to the hub M ake sure these connections are snug Try power cycling the hub by unplugging and plugging the hub back in Ifthe Power LED is still noton verify the AC source works by plugging another device into the o
49. include a specific command the syntax and description of that specific console command For the cmd parameter use the first two letters of the command you wish to see Example HE ST This displays help for the Status command BAckup M anaging the Hub Console Command Reference To configure one of the hub s ports for dedicated use in a backup redundant link to another hub An HP Hub 16M allows you to use any two of its network ports for a redundant link to another hub in your network The backup link normally carries no traffic but it is automatically activated if the primary link fails Notethat any of the ports can bethe backup port to any other port When you enter the Backup command you are prompted for these values Default Description Backup Port Disabled The port used for the backup link Enter the port ID Or enter DI for disable if you wish to remove an existing backup link configuration Primary Port None The port used for the primary link Enter the port ID Remote M AC 000000 000000 The 12 digit hexadecimal M AC address of the hub at address the remote end of the critical link Seconds Between 1second How often you want the hub to send an IEEE 802 2 Test Packets Test packet to the remote hub over the primary link Consecutive 2 failures The number of consecutive Test packet response Failures failures that will trigger activation of the backup link For example enter 5 to activate the backup link on t
50. ings from the name plates of all your hubs and other equipment installed on the same circuits and comparethetotal with the ratinglimits for the supply circuits m Makesurethat the power source circuits are properly grounded then use the supplied power cord to connect the HP Hub 16M to the circuit See the Safety Statements in thi s chapter m Do not block airflow around the side and the back of the unit Safety and Regulatory Statements Power Precautions Note Note Safety and Regulatory G 2 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 m Do not install the hub in an environment where the operating ambient temperature might exceed 45 C 113 F m Make sure the air flow around the sides of the hub is not restricted Power Precautions Follow these precautions when unplugging and plugging in power to the hub as well as adding or removing modules The hub does not have a power switch itis 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 equi
51. ion 3 13 mounting the hub 1 5 in a rack or cabinet 1 5 NEighbor command 3 11 network addressing IP address D 2 IPX address D 2 network connections 1 7 hub to hub connections 1 8 port connections 1 8 Network management security violations 3 19 network management communication with the hub D 1 network management configuration 3 8 Novell NetWare D 2 O outbound F 6 out of band management RS 232 port pin out A 4 P partition recovery 3 13 parts list 1 2 Password clearing 2 5 Physical address MAC address 3 8 physical specifications of hubs B 1 Ping command 3 12 pin outs minimum cable A 5 POrt command 3 13 Port LED 1 13 Port LEDs 1 4 2 3 port LEDs twisted pair 1 13 ports connection procedures 1 8 power cord plugging into the hub 1 2 plugging into the wall 1 3 Power LED 1 4 1 12 2 3 power on 1 4 procedures configuring a backup link E 5 network connections to the hub 1 7 network port connections 1 8 R rack mounting 1 5 instructions for 1 5 recommended cables description A 1 recovery intelligent partition 3 13 Redundant Power Supply 1 3 remote connections 3 2 REset command 3 13 resetting the hub troubleshooting procedure 2 5 RJ 45 jack 1 8 RObustness command 3 13 RPS LED 1 12 2 3 S SEcure command 3 14 Securit
52. ion usePort 16to connect your hub to a PC or similar device using straight through cable 1 8 Installing the Hub Installing and Configuring Your Hub In the following illustration the first hub is connected to two end nodes and to a second hub Notethe second hub shows Port 16 connectingto a PC using a straight through cable with the port in the MDI X position ZZ ZZ DI B E E a H 2 BH B I a a HB a i 1x X ax aX Gi sx x 8x 9X m nx 1X IE 14 15 E PI mia aia aia ada ngu ae IL EE Mu EEE Straight Through Cable from E Hub to PCs Hub attached to Port 16 switch in M DI position and straight through cable is used Up to 100 meters po0 10BaseT BH E E HB E H E H 1x X x tri x 1 x 8x f DI I Wa H 2 2 ax 3x mx 1 IE 1X 15 16x gn E Es E MDI 1 Im E A O MDIX PC attached to Port 16 switch in M DI X position and straight through cable is used ThinLAN Connections With an HP ThinLAN External Transceiver for 10Base2 networks you can connect your hub or a stack of hubs to athin LAN network The following illustration shows a hub with an HP ThinLAN External Transceiver 1 9 MH SUR Gui Installing the Hub Installing the Hub Installing and Configuring Your Hub r 1 331988 E E E a E E D a E HB BH 1x 2x 3x ax 5x 5x 7x BX E 10x nx ax E 14x 15 16x
53. le to a fiber optic backbone Na 10BaseT EL SB m en J3188A BOr og go P tb Gg P g ot M COL ACT PPP Pee eS PREPA jo Ln For more information about cabling configuration see the documentation accompanying the optional transceiver modules Interpreting LED Status Two types of LEDs exist on the hub They are m Hub Status LEDs These LEDs reflect certain conditions that exist on the hub at large and are not explicitly referring to a given port m PortStatus LEDs These LEDs reflect basic conditions for example Link Beat being enabled that exist on a specific port Status information for both are described in the following tables 1 11 MH SUR Su resul Installing the Hub Installing the Hub Interpreting LED Status 1 12 Interpreting Hub Status LEDs The hub status LEDs indicate whether the hub is functioning properly For further details on error conditions indicated by the Status LEDs see chapter 2 Troubleshooting Meaning of LED SYSTEM On The hub is receiving power Pow er green Off The hub is not receiving power ACT Flickering ON while a packetis being transmitted Normally the LED appears Activity to flicker In heavy traffic it may appear on all the time green FLT On An error has been detected on the hub Fault Off No error has been detected on the hub Orange Flash Flashes simultaneously with
54. m or cross 3 meters over cable 25 pinfemale RS 232C 9 pin female to 25 25442H pin female null modem or 3 meter crossover cable Connecting a 25 pin female RS 232C 9 pin female to 25 pin HP 24542M modem to the hub s male standard modem or RS 232 port straight through cable Cables and Connectors Cables and Connectors Recommended Cables The following table shows network connections to the hub Cable Function Cable Type HP Product Number Network connections to the hub Hub to end node Twisted pair 92268A 4 pair 4 meters connectionorhubto straight through 92268B 4 pair 8 meters hub connection cable 92268C 4 pair 16 meters using the M DI M DI 92268D 4 pair 32 meters X switch 92268N 4 pair 300 meters The maximum total length of any twisted pair segment is 100 meters You can contact your HP authorized dealer or call HP at 1 800 538 8787 to order these parts Note Cables and Connectors Twisted Pair Cable Connector Pin Outs Twisted P air Cable Connector Pin Outs Twisted P air Cable for Hub to Computer Network Connection To connect PCs or other network devices to the hub use a straight through 10B ase T cable The twisted pair wires must be twisted through the entire length of the cable The wiring sequence must conform to AT amp T 258A not USOC See Twisted Pair Cable Pin Assignments at the end of this chapter for a listing of the signals used on each pin 12345678 1
55. ne up with the bracket holes 3 Then attach the hub to the rack with the 10 32 x 5 8 black screws and black nylon washers included in the accessory kit with a Phillips cross head screwdriver Some cabinets require number 12 24 screws instead Make sure you have screws that fit your cabinet or rack before mounting the hub 1 5 MH SUR Guia Installing the Hub Installing the Hub Installing and Configuring Your Hub Table Mounting To place the hub on a table or other horizontal surface no special tools are necessary Apply the four feet included in the accessory kit onto the bottom of the hub Be certain to pick a sturdy table in an uncluttered area You may want to secure the hub s cables to the leg of the table to prevent people from tripping over them 1 6 Installing the Hub Installing and Configuring Your Hub 5 Connect the hub to your network Reconnect the hub to either an AC power source or the RPS depending on which source you are using With the hub mounted you are now ready to connect the hub to your network Typical hub connections are m hub to device connections Connecting to network devices such as computers and printers m hub to hub connections Connecting to another HP 10Base T hub or other Ethernet hub m hub to network backbones Connecting to a network backbone This section describes the different ways you can connect your hub to your network 1 7 MH ap Su
56. ng and Configuring Your Hub To Install and configure your hub you must complete five basic tasks They are locating and verifying the necessary parts connecting an external transceiver if necessary connecting the hub to a power source mounting the hub connecting the hub to your network 1 Verify included parts Each Hub 16M has the following components shipped with it m HP 10BaseT Hub 16M J 31884 Installation and Reference Gui de this manual J 3188 90001 A U S Canada M exico 8120 1378 power cord Accessory kit 5064 2053 e bumper feet 4 e hub to rack screws 10 32 4 e bracket to hub screws 10 32 4 e nylon finishing washer 4 e bracket to hub screws 2 e AUI retainer assembly 2 Connect the external transceiver Because of the way the external transceiver protrudes out from hub onceitis connected you may want to install the external transceiver before installing the hub Inspect your installation site and identify whether enough room will be available for the external transceiver to be connected Then see your external transceiver guide for installation instructions 3 Verify the hub operates correctly Before mounting the hub connect itto a power source and verify the hub will operate correctly Installing the Hub Installing and Configuring Your Hub 1 Plugthe power cord into the hub s power cord receptacle and into an AC alternating current power source If you are using an RPS as your
57. o el problema Puesta a tierra del cable de la red local LAN m 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 m Es posible que los cables dela LAN se vean sometidos de vez en cuando a voltajes moment neos que entra en 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 pieza alguna susceptible de reparaci n por parte del usuario Todas las reparaciones ajustes o servicio de mantenimiento debe realizarlos sola mente el t cnico Este producto no tiene interruptor de potencia se activa cuando se enchufa el cable de alimentaci n oye psy pue AALS Safety and Regulatory Safety and Regulatory Statements Safety Information J apanese Safety Information apanese BAH Vaa7 NBs Sucloit523owcw23egd aYa A A BEL TREIA DER CTE SW WARNING W 27V40 WARNING ZAR ERORA ER SERA UL 3x3 CAUTION gza VEO CAUTION EERORW 72 2 REX LES WARNING CAUTION DHARE AN TAT BASE RET ZURRA Z E lt RAL FLOPIE oR LE TROFE EA TS EIN CAVE E ARTE D ALOR a CARE Beim FEM Zo Co x3 EE ROAD Rum EIA ELABORE Fe ey RECO WIHonsvez PET SZERETI HUI ORME BAAR OR EZ ARENA ER Hk RH SNS E CRRA FEALTRBWTC EW LAN 7 7 IL 03h ic BR UT e b LEEDO LAN BEROMETATFA
58. of the first device attached to the port and makes itthe authorized MAC address If a different device is later attached to the port the new address is learned and becomes the autho rized address Each new device attached becomes the authorized device You can be informed of any such changes by setting the Send Alarm parameter to YES In that case when a new address is detected the M anaging the Hub Console Command Reference Security and port LEDs flash the intruder s MAC address is displayed on the console Status command screen and an alarm is sent to the authorized network management station s m UsetheFirst Address Heard provi des medi um port security The hub learns the address of the first device attached to the port and makes itthe authorized MAC address If you have any security configured for the port Send Alarm and or E avesdrop Prevention parameters are set to YES when adifferent deviceis later attached to the port the new address is registered as an intruder address a security violation has occurred In that case the port is automatically disabled and the Security and affected port LEDs flash An alarm is also sentto the authorized network management station s if the Send Alarm parameter is set to YES m Assign an Address provi des the highest security You enter the address of the device that is authorized to be attached to the port If you have any security configured for the port Send Alarm and or Eavesdrop
59. ollision A single collision will be counted by all ports involved so the total collision counters may be less than the sum of the port counts Number of collisions which went undetected by the sending end node Number of packets transmitted incorrectly and number of incorrectly aligned packets Number of packets larger than 1518 bytes Number of packets addressed to everyone inthe network These packets consume CPU resources from each node on the network Valid Range Less than 4000 packets per second Less than 2 times the number of good packets Less than 1 of good packets Less than 1 of good packets Less than 1 of good packets Less than 200 packets per second Corrective Action if over Valid Range Decrease the traffic level by using a switch to segment the network Decrease the traffic level by using a switch to segment the network Replace bad cables and or transceivers if problems persist Rarely you may have a defective LAN adapter Too many repeaters between end nodes or cables which are too long or bad cable This counter indicates faulty cabling Update the LAN adapter drivers on all nodes connected to the port Decrease the number of nodes in an IP subnet or IPX network by using more routers Consult Novell Netware documentation on how to reduce broadcasts in an IPX network The port counters in the ASCII console show totals not number of packets per secon
60. ollow these steps 1 Attach a PC running an ASCII terminal emulator to the hub and start the ASCII terminal emulator 2 Usethe Backup function to configure the backup link 3 Completethenetwork cableconnections between the monitoring hub and the remote device For cabling instructions see Appendix A Cables and Connectors in this manual 4 Ontheremote device make sure that the ports connected to both the primary and backup links are enabled On the monitoring hub the status of the primary and backup ports is controlled by the hub s firmware you do not need to explicitly enable the monitoring hub s ports E 5 SUN des Backup Links Backup Links Identifying the Backup Link E 6 5 Enablethe primary port in software This step is necessary because until you have completed step 3 connecting the cables the test packets cannot be successfully sent through the primary port The primary port will therefore be disabled and the backup port will be activated Once you enable the primary port it assumes the active role Identifying the Backup Link The ports designated as the primary and backup ports are identified in m theCiscoView Backup function window m ASCII console interface by using the Backup command The primary port is identified by pri the backup port by bkup Indications of Backup Link Activation When the primary link fails n consecutive test packet responses were not received on the primary port f
61. orts a Telnet console session Your Telnet syntax depends on your TCP IP software or your terminal server By default Telnet is enabled You can disable Telnet by using the IPconfig console command described on page 3 7 To establish a Telnet session follow these steps 1 Verify that the hub has been configured with an IP address and that it is accessible via IP from your PC or workstation 2 Enterthe command telnet followed by the IP address or system name of the hub for example telnet 192 1 1 10 or telnet your hub Your Telnet syntax depends on your TCP IP software or your terminal server You can use a system name if you have name resolution such as DNS To end the Telnet session type DI the DIsconnect command to terminate the console session Or use your Telnet application s command to close or quit the Telnet session 3 2 M anaging the Hub Setting up the ASCII Console Remotely Using a Modem and a Terminal 1 Use a full duplex asynchronous character mode modem only 2 Connect the modem to the hub s RS 232 port using an RS 232 C modem cable For pin outs and recommended cables see Appendix Cables and Connectors 3 Configure the modem as described in the Appendix C Modem Configuration 4 Atthe remote site connect the terminal or PC emulating a terminal to the remote modem Make sure the terminal and modems are functioning properly then establish the link between the terminal s
62. p link which had not been carrying any traffic is enabled automatically If the primary link does fail it is automatically disabled until it can be repaired and re enabled When the primary link is repaired you must re enable the primary port It is not re enabled automatically When the primary port is enabled the backup portis automatically disabled and returned to backup mode See Reactivating the Primary Link later in this appendix Backup Links Backup Links How Backup Links Work E 2 Limitations Each hub can monitor a single backup link only one backup link can be configured on each hub But the hub may be at the remote end of one backup link and at the monitoring end of a backup link to a different hub A given hub should be connected to the remote end of no more than two backup links If it is functioning as the remote hub in more than two backup links it may not be able to respond to the test packets fast enough when there is a high level of data traffic on the network This ability to respond may be improved by increasing the time between test packet transmissions on the monitoring hubs For all the backup links in which the remote hub is involved the time configured on the moni toring hubs for those links should be increased by one second for each additional backup link beyond two links Add one to this count if the remote hub is also functioning as a primary monitoring hub in adifferent link Additional Note
63. ped without a password Follow the prompts to enter a new password or to change the existing password If you assign a password it is also used as the SNMP community name If you decideto delete the password enter the Password command then press without entering any characters at the password prompt Press and hold the Password Reset button for approximately 10 seconds to clear a password After the password has been cleared access to the hub from the ASCII console and from SNMP management stations will no longer be password protected A new password can be assigned from the ASCII console or CiscoWorks To test the path between the hub and another device that responds to IP packets Thehub sends Internet Control Message Protocol ICMP Echo Request Ping packets to another node with the specified IP address and Waits for Echo Response packets in return When you run the Ping command you will be prompted for m thelP address of the destination device in the format X X X X m the number of packets to send m thetimeout value the number of seconds to wait for a response If any errors are reported during this test there may be a fault in the path used duringthetestorinthe destination device For moreinformation abouttesting network links see chapter 2 Troubleshooting M anaging the Hub Console Command Reference POrt lt port gt lt ON OFF gt REset RObustness To enable set to ON or disable set to OFF a hub por
64. pment and should be easily accessible Safety and Regulatory Statements Safety Information Safety Information Documentation reference symbol Ifthe productis marked with this symbol referto the productdocumentation to get more information 1 about the product WARNING A WARNING in the manual denotes a hazard that can cause injury or death CAUTION 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 appro priate steps Grounding Theseare safety class products and have protective earthingterminals 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 m If your LAN covers an area served by more than one power distribu tion system be sure their safety grounds are securely interconnected m LAN cables may occasionally be subject to hazardous transient volt ages such as lightning or disturbances in the electrical utilities power grid Handleexposed metal components of the network with caution Servicing There are no user serviceable parts inside these products Any servicing adjustment maintenance or repair mustbe performed only by service
65. pproaches 2 1 diagnosing with the LEDs 2 2 LED patterns showing errors 2 3 testing the hub 2 5 twisted pair cable hub to computer connection A 3 pin assignments A 6 pin outs A 3 twisted pair ports LED description 1 13 V verifying hub operation 1 2 HEWLETT LA PACKARD Technical information in this document is subject to change without notice Copyright 1997 Hewlett Packard Company Printed in Singapore 6 97 Manual Part Number J 3188 90001
66. r 104 2 Data 104 101 Data 104 101 Data 104 101 Useless li packet Y A PC 101 N A PC 103 Eavesdrop am Eavesdrop Prevention PC 1 Br enun is Eavesdrop Prevention ON F 7 UO RELLUONLI A UNISS Safety and Regulatory Statements This chapter covers the following topics m mounting precautions m power precautions m Safety and regulatory statements m Declaration of Conformity Mounting Precautions When you put a hub into a rack follow these mounting precautions m Therack or cabinet should be adequately secured to prevent it from becoming unstable and or falling over The 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 m 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 In the back of the hub allow at least 3 8 cm 11 2inches of spaceforthe power cord If you areusingaRedundant Power Supply allow the appropriate amount of space for the RPS connector m Ensurethatthe HP Hub 16M does not overload the power circuits wiring and over current protection To determine the possibility of overloading the supply circuits add together the amperage rat
67. rd is a single line The colon separates fields in the record The backslash 1 indicates the current record continues on the next lineas if there were no carriage return and linefeed characters Spaces are not allowed between the characters on a line Names such as hphub16M must begin with a letter and can only contain letters numbers periods or hyphens D 5 Backup Links This chapter describes how to useBackup Links on thehub Topics described include how backup links work examples of backup links configuring a backup link identifying a backup link indications of backup link activation reactivating the primary link How Backup Links Work In some network configurations a critical link exists for example between two workgroups that regularly share or exchange data over the network To maintain the integrity of such a critical link the HP Hub 16M offer a backup link feature A backup link is a separate cable run between two hubs that is automatically enabled if the connection designated as the primary link fails The hub on which the redundant link is configured hub A in theillustration the Monitoring Hub is responsible for monitoring the link It sends IEEE 802 2 Test packets to the hub at the other end of the link hub B in the illustration the Remote Hub and looks for response packets from that hub If the response packets fail to come back the primary link is considered as having failed and the backu
68. ring self test m hub maintenance tasks Troubleshooting Approaches There are three primary ways to diagnose hub problems m BycheckingtheLEDsonthefront of the hub as described in the section Using a Checklist to Diagnose the Hub later in this chapter m Byusingthe ASCII console s diagnostic functions as described in chapter 3 Managing the Hub m Byusingthe CiscoView network management application as described in the CiscoView online help Troubleshooting Troubleshooting Using a Checklist to Diagnose the Hub Using a Checklist to Diagnose the Hub Use the following table to diagnose the problem with your HP Hub 16M ECOS EN How do resetthe hub Remove the plug on the power cord from the power source and reconnectit None of the LEDs are on Verify that the power cord is plugged into an active power source and to the hub M ake sure these connections are snug Try power cycling the hub by unplugging and plugging the hub back in If the Power LED is still not on verify the AC source works by plugging another device into the outlet Or try plugging the hub into a different outlet or try a different power cord If this condition persists call your HP authorized LAN dealer or HP representative for assistance lost the password Press the password resetbuttonfor 10seconds See page 2 4 for more details IP configuration errors have been Use the ASCII console s IP Configuration reported function as described
69. rom the other device the backup link is automatically enabled The effect of this change is displayed onthe monitoring hub s LEDs and management interface Activation of the backup link does not change the status of any of the ports on the remote device On the monitoring hub s LEDs the primary port LED goes off and the backup port LED goes on Inthe ASCII consoleor CiscoView the status of the primary port changes from active to not active and the backup port changes from not active to active See the ASCII console help or CiscoView online help for more information Backup Links Reactivating the Primary Link Reactivating the Primary Link When the primary link is repaired you can use any of the following methods to re enable the primary port m From the ASCII console select Port Segment Configuration then Disable and enable ports option then enable ports m From CiscoView re enable the primary port See the network manage ment product documentation for details on how to enable a port m Power cycle the hub When the primary portis re enabled the backup portis automatically disabled and returned to backup mode E 7 SUN des Security Information This section describes how to set security for your product It covers the following topics m how intruder prevention works m how eavesdrop prevention works m setting inbound security with intruder prevention m setting outbound security with eavesd
70. rop prevention Understanding Network Security In addition to password protection and network access protection the HP Hub 16M provides two major types of per port security m Intruder Prevention for inbound data from the end user to the hub m Eavesdrop Prevention for outbound data from the hub to the end user Both of these types of security can be configured on each port individually all twisted pair ports and the AUI port through the SEcure command on the ASCII console interface These per port security features are enabled by comparing the source and destination address of each packet received or transmitted by the hub to each port s Authorized MAC address the MAC address of the devicethatis authorized to communicatethrough that hub port These features can be seen through the CiscoView network management application Security Infomation Security Information How Intruder Prevention Works F 2 How Intruder Prevention Works Intruder Prevention stops an unauthorized computer or other device from actively gaining access to the network When a portis configured for Intruder Prevention the hub examines the source address of each packet comingin through that port and compares it with the authorized MAC address If the addresses are not the same the hub concludes that an intruder is attempting to gain access to the network and takes the appropriate action as configured either disabling the port sending an alarm to the n
71. routers a packet is allowed to cross before the packet is discarded The default value is 32 Increase this value if the hub is managed from a network management station that is more than 32 routers away The maximum allowable value is 255 Use the IP Configuration command in the ASCII console or CiscoView to specify IP addresses UsingBOOTP BOOTP Bootstrap Protocol is used to download network configuration data from a server the BOOTP server to the hub The configuration data the hub retrieves from the BOOTP server is m thelP address for the hub m the subnet mask for the subnet on which the hub is installed m the default router If you have configured the hub s IP parameters on a BOOTP server you do not need to use the IP Config command in the ASCII console As shipped from the factory the hub is configured to use BOOTP to retrieve the IP configura tion information The BOOTP Process When the hub is powered on it broadcasts BOOTP requests that contain the hub s MAC address The BOOTP server receives the request and searches its BOOTP tablefilefor an entry that matches the hub s MAC address If a match is found the configuration data in the associated file entry is returned to the hub as a BOOTP reply For most UNIX systems the BOOTP table is contained in the etc bootptab file The example below applies to the BOOTP table for UNIX systems Network Addressing Using BOOTP BOOTP TableFile Entries An entry in the BOOTP ta
72. rrors but has not been enabled e CONNECTED GOOD ACTIVE means the RPS is attached with no errors and is active the primary power supply is not operating and the RPS has been initiated as a backup system m atable with the port information described as follows Status Information W hat It Means The port ID Additionally bkup indicates that the portis configured as the backup link pri indicates thatthe port is the primary link see the Backup command Port Status The status of each port ON means the port is enabled and is not auto segmented OFF means that the port has been disabled by the Port command or because of a security violation PARTITIONED means the port has been auto partitioned See Auto Partitioning in the chapter that provides information on the Product Description ON REVERSED means that reversed wiring polarity on the receive pair has been detected on a twisted pair cable and the hub has compensated Link Beat Informs the hub of the presence of a device connected to it over twisted pair cable M AC address The unique 12 digit link layer address for the hub Also called Ethernet address or physical address INTRUDER The address of a device not authorized to access the hub ADDRESS 3 20 TEstlink Note M anaging the Hub Console Command Reference To run a test of the link between the hub and another IEEE 802 3 device The destination device must be able to send an IEEE 802 2 Test Respon
73. ry monitoring hub for a different link The primary link and the backup link cabling should be run over different paths through different conduits for example to reduce the possibility that damage will occur to both cables simultaneously Backup Links Configuring a Backup Link Configuring a Backup Link Configure the Monitoring Hub Only All configuration of the backup links feature is performed from CiscoView or the ASCII console On the remote device you only need to make sure the ports used for the primary and backup links are both enabled Use the Backup Function To configurethis link you use the Backup func tion in the ASCII console You provide the following information m the device and port to be used for the backup link m the device and port to be used for the primary link m the MAC address of the device at the remote end of the link H how frequently in seconds test packets used to check the status of the primary link should be sent to the remote device m how many consecutive response failures will trigger activation of the backup link Configuration Installation Sequence If ahubisinstalled in anetwork thatincludestwo connectionsto another hub and the backup link has not yet been configured a loop in the network now exists that will causesome network performance degradation For thisreason itis better to configure the backup link on the hub before the hub is installed in the network It is best to f
74. s Any port on the hub can be used for either the primary link or the backup link Any combination of media types can be used as a backup link by using the AUI port This accepts fiber thin coax and twisted pair external transceivers The primary link and the backup link cabling should be run over different paths through different conduits for example to reduce the possibility that damage will occur to both cables simultaneously Backup Links Examples of Backup Links Examples of Backup Links The Backup Link function allows you to specify a backup link between two devices in case the primary link fails An example of a backup link is shown below Hub to a Server Primary Link fiber Backup Link twisted pair Server Hub to a Switch Backup Link Primary Link A backup link is a separate path connected between the hub and a device The port through which the cable is connected between the two devices is auto matically enabled if the connection designated as the primary link fails How the Backup Function Works The hub on which the redundant link is configured is responsible for moni toring the link It sends packets to the station at the other end of the link and looks for response packets from that station If the response packets fail to come back the primary link is considered as having failed and the backup link which had not been carrying any traffic is enabled automatically If the primary link does
75. s Enter the command SECL to clear any security violation indicators and to rearm the indicators to be ready for the next intrusion The indications are slightly different between port security violations and network management security violations as described next For Port Security The security violations are indicated by the Security LED and the LED for the affected port blinking simultaneously and the intruder s MAC address being added to the Status command screen for the affected port Security violations occur when a non authorized address is detected on a portand atleast one of the intruder prevention parameters Send Alarm or Disable Port is set to YES Notes M anaging the Hub Console Command Reference For Network Management Security Thesecurityviolationsareindicated by the Security LED flashing and the violating network management station s address being displayed on the Status command screen A network management security violation occurs when a network manage ment station that is not on the authorized management station list attempts to issue SNMP set commands to the hub or when a network management station uses an invalid password SNMP community name to access the hub See the Managers command description earlier in this chapter for information on the authorized management station list By default all network management stations are allowed to manage the hub Under this configura tion network management se
76. se packet upon receipt of an IEEE 802 2 Test command packet The HP Hub 16M will respond with the correct packet You will be prompted for the 12 digit hexadecimal MAC address of the destination device You will then be prompted for the number of test packets to send If any errors are reported duringthis test there may be a fault onthe link being tested or on the destination device For more information about testing network links see the chapter 2 Troubleshooting qnH eun 6u Heren Cables and Connectors This appendix lists cables that have been tested and verified for use with the HP Hub 16M The following topics are covered recommended Cables m twisted Pair Cable Connector Pinouts m RS 232 Connector and Cable Pinouts It also includes minimum pin out information so if you wish to use an unlisted cable you can verify that the cables used in your installation are correctly wired Note that each pin out does not necessarily match the pin out for the corresponding HP cable but cables manufactured to follow the minimum pin out will function correctly Recommended Cables The following table shows PC connections to the RS 232 port Console PC connection to the RS 232 port Connecting the 9 pin male RS 232 9 pin female to 9 pin F1047 80002 or PC directly to female null modem or cross F1047 60901 or the module s over cable 5182 4794 RS 232 port 25 pin male RS 232C 9 pin female to 25 pin 24542G male null mode
77. shooting Hub Maintenance Tasks 2 6 Running Connectivity Tests Both the hub and cabling can be tested by running an end to end communica tions test a test that sends known data from one network device to another through the hub such that you can verify that the data was correctly transmitted between the devices eT 10BaseT ABBA EHE BH HB HB HJ Go Hd ILE BG 8 wl 1x X 3X 4X EX 6x mx 8X ox m TX 12X 13X x 15X 16X cr ala aia ain ada ada ada diadala O Cp mH MODE MDLX oo 17 PCsendingtest packets PC responding to J j a the test packets A See your LAN adapter s manual for information on running an end to end communication test Obtaining Firmware Enhancements In the future Hewlett Packard may provide improvements to this product through firmware upgrades The upgrade code can be downloaded from a PC attached to the hub s RS 232 port or over the network The update procedures are described in documents that come with the firmware enhancements You can determine the current firmware version on the hub from the ASCII console Look for the SNMP Agent EEPROM version number to determine the revision When you access the console the version number appears Managing the Hub This chapter describes the features available from an ASCII console Topics include m setting up the ASCII Console m console command reference The HP Hub 16M has SNMP t
78. t this product may cause radio interference in which case the user may be required to take adequate measures Canada This product complies with Class A Canadian EMC requirement G 9 oye psy pue AAS Safety and Regulatory Safety and Regulatory Statements Declaration of Conformity Declaration of Conformity Thefollowing Declaration of Conformity forthe HP J 3188A Hub 16M 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 recog nized in the European community G 10 DECLARATION OF CONFORMITY according to ISO TEC 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 10Base T Hub 16M Model Number HP J3188A conforms to the following Product Specifications Safety EN60950 1992 A1 A2 IEC 950 1991 A1 A2 EMC EN 55022 1994 CISPR 22 1993 class A EN50082 1 1992 prEN 55024 2 1992 IEC 801 2 1991 4 kV CD 8 kV AD prEN 55024 3 1991 IEC 801 3 1984 3 V m prEN 55024 4 1992 IEC 801 4 1988 1 kV power line 0 5 kV signal line 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 LEDSs in this product s are Class
79. t The initial setting for all ports is enabled ON You can usethe Status command to check the current status of all the ports The lt port gt parameter can be m twisted pair port number m XCVR or XC for the AUI port m ALLorAL for all ports Example 1 P070FF Disables port 7 Example 2 POAL ON Enables all ports To reset the hub and run a hub self test This command also resets all the network statistic counters and the time since the last reset The current configuration is unchanged The hub is not accessible from network manage ment software while it is being tested but it continues to repeat data If the hub is faulty at the end of the reset process the Fault LED will stay on This command also terminates the console session and disconnects the phone line if you are using a modem to access the console and resets the console port baud rate to be automatically sensed To restart the console session first re establish the phone link if used then press several times for the prompt Allows you to invoke options to improve the hub s ability to tolerate network problems resulting from excessive collisions The configurable options are m Intelligent Partition Recovery m Late Collision Monitoring By default the robustness features are off The Intelligent Partition Recovery option makes it difficult for a problem port to automatically re enable itself to send traffic on the network 3 13 qnH eun 6u Heren Managing t
80. t is enabled When the self test completes successfully the LEDs go into their normal operational states If a hub hardware fault exists the hub will not complete self test This will be indicated by an abnormal LED pattern If the self test time elapses and the Fault LED continues to stay on instead of turning off the hub may have an error condition If repeating the self test does not correct the problem and the Fault LED still stays continu ously on contact your reseller for replacement information After the hub has passed its self test you are ready to mount the hub Warning Installing the Hub Installing and Configuring Your Hub 4 Mount the hub The HP Hub 16M can be mounted in two ways 1 inarack or cabinet 2 onatable The hardware for mounting the hub is included in the accessory kit 5064 2053 packed with the hub Before mounting the hub unplug it See Appendix G Safety and Regulatory Standards for general mounting precautions Rack or Cabinet Mounting The rack or cabinet should be adequately secured to prevent it from becoming unstable and or falling over Please see Appendix G Safety and Regulatory Standards for precautions and warnings associated with rack mounting 1 UsingaPhillips T 10 screwdriver attach the mounting brackets to the hub with 10 32 x 7 16 silver screws included in the accessory kit 2 Position the hub in the rack or cabinet and slide it up or down until the rack holes li
81. te amet here hab Clpatatezs DOM OPP amable zr disabhle Gizcs Diecerery Pretere 1 GGDP i ters display comebers fer all parts ij ot termimate this core la zeca imm LFcanf ig cen iyara laterwet Pretecel parameters F maprrz leu dit ar display the sutherised mamneygrrz list HEr istzreal tine the las at which COP message are trassaitted BEighher dirplay mrzighher GIP der icer Pee owe rd change the he Pk laver TGHE Echo Ra Ee perform ratuerkek La per meurt tart P rt pere CUOMIOPP smable zr izable a pert HEzzt reat hab amd rum ra zalf taszt R bmrtmazz feel dit er display roberto forature SE cara pert lies lGlesrs cesfilgers hab zzczmrity zhzw the zzttimgz zr clear alarmz pere cas be a pert DD sr ALL SPred mew pardo ch the commele ham rata Slate i display states fer all perte IEztlisk perfora data link layer ccommmmicatizsm tert rn Gtrl c dmrimg am command tarminataz that roammamd Lonnescted E D026 ANGI 13200 BH 7 HA Cp Syntax Conventions on Help Screen lt gt Indicates a required parameter Indicates an optional parameter Used as a separator between acceptable variable values For example SE port SHow CLear indicates that either a port ID or the characters SH or CL must be entered after the SE command The commands are described in the rest of the chapter HElp cmd or cmd To see the help screen shown above or if you
82. trained personnel These products do not have a power switch they are powered on when the power cord is plugged in G 3 oye psy pue AALS Safety and Regulatory Safety and Regulatory Statements Informations concernant la s curit Informations concernant la s curit Symbole de r f rence a la documentation Si le produit est marqu de cesymbole reportez vous a la documentation du produit afin d obtenir 1 des informations plus d taill es WARNING Dans la documentation un WARNING indique un danger susceptible d entra ner des dommages corporels ou la mort CAUTION Un texte de mise en garde intitul CAUTION indique un danger suscep tible 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 et poss de unebornedemisealaterre 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 cable de r seau local m si votre r seau local s tend sur une zone desservie par plus d un systeme de distribution de puissance
83. ts the unauthorized MAC address and automatically disables the port and sends an alarm a security violation trap notification to the authorized network management station Note Security Information Setting Inbound Security with Intruder Prevention Auto Port Disable Any port may be configured to be disabled automatically when an intruder s MAC address is detected This featureis automati cally controlled by your selection of the Authorized Address Selection Method for the port If the address used is the first heard or an assigned address the port will be disabled automatically when an intruder is detected If the address is learned continuously the port will not be automatically disabled Auto port disable may not be used on cascaded ports ports connected to a network with multiple end users or ports configured to learn the authorized MAC address continuously The auto port disable feature compares the authorized MAC address of the port to the source address of the packet inbound to the hub at that port If the authorized address and the source address do not match the HP hub will automatically disable the port Once a port is disabled because of a security violation to resume operation the port must be re enabled either by using the hub console interface s Port command or from the network management station A bit error in the source address fi eld of the packet will not cause the port to be disabled In this case the
84. ty Information for a detailed description of this feature 3 15 qnH eun 6u Heren Managing the Hub Managing the Hub Console Command Reference Note 3 16 Configuring Security on a Single Port To set or change the security configuration for a single port on the hub twisted pair or AUI enter SE and the port s ID for example SE 4 The port s current security configuration is displayed followed by a prompt to change the configuration or not If you choose to change the configuration you are then prompted for the following parameters defined on the previous page m Address selection method or authorized MAC address m Youarefirstpromptedif you wantto changethe address selection method or the authorized address Press or enter N to retain the current value Enter Y to change the value and you are prompted to select one of the following methods earn address Continuously enter C use First address heard enter F Assign an address enter A port security Off enter O Send alarm when intruder detected E avesdrop prevention To enable security on a port at least one of the parameters Send Alarm or E avesdrop Prevention must be set to ON Configuring Security on All Twisted Pair Ports To set or change the security configuration for all the twisted pair ports together enter SE ALL This method is most useful when you are using the same security configuration for all thetwisted pair ports either
85. ustand verstanden und die entsprech enden Ma nahmen ergriffen haben Dies ist ein Ger t der Sicherheitsklasse und verf gt ber einen sch tzenden Erdung sterminal 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 herausz iehen bis die Erdung wiederhergestellt ist F r LAN Kabelerdung m Wenn Ihr LAN ein Gebiet umfa t das von mehr als einem Stromverteilungs system beliefert wird m ssen Sie sich vergewissern da die Sicherheitserdungen fest untereinander verbunden sind m LAN Kabel k nnen gelegentlich gef hrlichen bergangsspannungen aus gesetzt werden beispielsweise durch Blitz oder St rungen in dem Starkstromnetz des Elektrizitatswerks 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 Reparaturarbeiten d rfen nur von geschultem Bedienungspersonal durchgef hrt werden Dieses Ger t hat keinen Netzschalter es wird beim Anschlie en des Netzkabels eingeschaltet oye psy pue AAS Safety and Regulatory Safety and Regulatory Statements Considerazioni sulla sicurezza Considerazioni sulla sicurezza
86. utlet Or try plugging the hub into a different outlet or try a different power cord If this condition persists call your HP authorized LAN dealer or HP representative for assistance 3 x Check cabling on the indicated port all the way out to the device attached to that port Faulty wiring or a bad connection could exist somewhere in that connection The end node or hub attached to the portis off The port may be disabled Use the ASCII console or management application to enable the port If Port 16 check the position of the M DI M DI X switch See the figure in chapter 1 that details the M DI M DI X switch si i Very frequent collisions are occurring which could indicate a network faultor improperly terminated cable This LED is not important for the diagnosis fuRoouss Nasi Troubleshooting LED Operation LED patterns indicating problems Diagnostic Tips COCOS OE A security violation has occurred on the port that is flashing See SEcure command for definition and details in Chapter 3 The port has been auto partitioned because of an excessive collision condition Check cable connections and status ofattached networkdevices forcauses ofthe excess collisions The hub will automatically recover after certain IEEE 802 3 criteria are successfully met Network management security violation occurred See SEcure command for details The hub has failed its self test Power cycle the hub If this
87. y auto port disable 3 14 clearing the violation indicators 3 18 configuring a single port 3 16 configuring all twisted pair ports 3 16 eavesdrop prevention 3 15 network management security violations 3 19 send alarm 3 15 showing the current configuration 3 18 Index 3 security authorized F 2 auto F 5 detailed description F 1 eavesdrop F 2 intruder F 2 send alarm F 5 Security LED 1 4 1 12 2 3 security parameters 3 14 Security violation indicators clearing 3 18 network management security violations 3 19 port security violations 3 18 Security configuring on single port 3 16 security configuring on twisted pair ports 3 16 Self Test 2 3 Self test LED pattern during 1 4 send alarm F 5 Send alarm security parameter configuration 3 15 commands MAnagers 3 9 MAnagers 3 9 specifications B 1 connectors B 2 electrical B 1 electromagnetic B 2 environmental B 1 physical B 1 SPeed command 3 19 Starting a console session 3 1 STatus command 3 19 status LEDs description 1 12 Syntax conventions for console commands 3 4 T table mounting 1 6 Telnet session establishing 3 2 terminator for athin LAN segment 1 10 TEstlink command 3 21 ThinLAN Connection 1 9 ThinLAN connections 1 9 4 Index ThinLAN port and 50 ohm terminator 1 10 troubleshooting a

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