HP 10Base-T Reference Guide
Contents
1. Safety and Regulatory Statements Regulatory Statements Regulatory Statements FCC Class A Statement for U S A Only when using unshielded cables This equipment has been tested and found to comply with the limits for a Class A digital device pursuant to Part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmfulinterference 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 case the user will be required to correct the interference at his own expense FCC Class2. VCCI Class 2 For Japan Only when using shielded cables CORE AURRE ERR BEANS VCCI DEE European Community This equipment complies with ISO IEC Guide 22 and EN 55022 Class A with unshielded cables and EN55022 Note With unshielded cables this is a Class A product In adomestic environment 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 requirements when using unshielded cables and Class B EMC requirements when using shielded cables C 10 Safety and Regulatory Statements Declaration of Conformity Declaration of Conformity The following Declaration of Conformity forthe HP AdvanceStack 10BT Switching Hubs complies with ISO IEC Guide 22 and EN 4501
3. WARNING WARNING CAUTION CAUTION WARNING CAUTION I LAN e D LEO LAN e LAN
4. A 1 Twisted Pair Cable Connector PIN QUE S 2 2 ses ae A 2 Twisted Pair Cable for Hub to Computer Network ORDERING A 2 Twisted Pair Cable Pin Assignments A 3 Twisted Pair Straight Through Cable A 3 Specifications Safety and Regulatory Statements Mounting Precautions C 1 Power Precautions iiiiiir eee eee eae seeds ened C 2 Safety Information cis cece eis etnies eee aa C 3 Index Switching Hub Features Introduction With the Switching Hubs you can connect computers servers and printers together in an Ethernet network for sharing files These hubs can coexist with any IEEE 802 3 Type 10Base T standard hub including HP AdvanceStack and HP EtherTwist products The three Switching Hub models are HP J 3200A Switching Hub 12R ele o ei EP i 3 Ana vv 3 la Management Slot HP J 3202A Switching Hub 24R El Es IH WoL Je Each hub has four segments or collision domains By default all users are put on segm
5. This chapter describes the following topics m automatically segmenting your network using an internal or external switch m features of the internal Switch Module m features of the Management Module 2 1 Optinizing Your Network Optimizing Your Netw ork Automatically Segmenting Your Network 2 2 Automatically Segmenting Your Network If you have multiple servers connected to your hubs you can improve access time to the servers by adding a switch You can add an internal switch module or external switch Reasons for Using an Internal vs External Switch Some of the main differences between an internal and external switch are listed in below Reasons to use an Reasons to Use an Internal Switch Module External Switch Need an inexpensive performance Need higher performance boost fat pipe switched boost within a 10Base T framework 10Base T to desktop Need just basic management plus Require full management auto configuration and load balancing spanning tree features dropped packet detection No pre configured bridging or switch Pre configured bridging or switching on network ing Half duplex to servers is adequate Need full duplex speed to servers For information on HP external switches contact your HP authorized dealer or reseller For more information on an external switch contact the manufac turer of the switch Optimizing Your Netw ork Automatically Segmenting Your Network HP Internal
6. 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 assurez vous que les prises de terre de s curit soient convenablement interconnectees m Lesc blesder seaux locaux peuvent occasionnellement tre soumis des surtensions transitoires dangereuses telles que la foudre ou des perturbations dans le r seau d alimentation public Manipulez les composants m talliques du r seau avec pr cautions Aucune pi ce contenue l int rieur de ce produit ne peut tre r par e par l utilisateur Tout d pannage r glage entretien ou r paration devra tre confi exclusivement un personnel qualifi Cet appareil ne comporte pas de commutateur principal la mise sous 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 markiert ist schlagen Sie bitte in der Produktdokumentation A N nach um mehr Informationen ber das Produkt zu erhalten WARNING Symbol f r Dokumentationsverweis Wenn das Produkt mit diesem Symbolmarkiertist schlagen Sie bitte in der Produktdokumentation nach um mehr Informationen ber das Produktzu erhalten CAUTION
7. 1 9 Su mii qH bug mms Switching Hub Features Switching Hub Features How the Hub Works Link Beat Type 10Base T devices use a signal called link beat also called link test pulse This signal informs the hub of the presence of a device connected to it over twisted pair cable and of the integrity of the twisted pair link between them The hub will not transmit packets out of twisted pair ports that do not sense the link beat signal Link beat is reflected in the port LEDs the LED will be on Link beat status shown in Port LEDs Cer CAY LAMAS L di BP 9 TYP YY El 1 10 Optimizing Your Network Note If your Col ision and or Act ivity LEDs are mostly on rather than flickering you can optimize your network by adding these optional modules m Management Module and Switch Module to automati cally dis tribute users onto the different segments m Management Module only to manually distribute users over your network onto the different segments Because the Switch Module needs a Management Module in thestack you can configure troubleshoot and monitor your network with either setup You can also add additional LAN adapters to your server or an external switch to communicate with the Switching Hubs See those products documentation for more information
8. Extender Cable remain operating because they have separate power cords power receptacle on the back of the hub Redundant Power Supply RPS Connector The RPS connector allows you to connect this hub to the HP J 2962A Redun dant Power Supply A single RPS shares the load with up to 4 hubs The RPS has several power supplies to keep the hub up and running Expansion Slot The Expansion Slotis used to add connectivity functionality through modules such as the HP J 3212A AdvanceStack 10BT Switch Module to the stack Other modules may be available Contact your HP authorized dealer or reseller for more information X Expansion Slot Expansion slot modules have a color on them that match a color bar on the hub Before inserting a module verify that the color matches The Switch Module features are described in chapter 2 Optimizing Your Network 1 7 Samne NH Burn ms Switching Hub Features Switching Hub Features How the Hub Works 1 8 How the Hub Works The HP AdvanceStack Switching Hubs are multiport repeaters that conform to the IEEE 802 3 repeater specification Data signals coming into the hub from any of its ports are automatically regenerated and transmitted to all the other network ports on the samesegment in the hub stack The hub regener ates the data without
9. Switching Hub to any Ethernet hub usea crossover cable See that hub s manual for crossover cable pin outs You can contact your HP authorized dealer or call HP at 1 800 538 8787 to order these parts A 1 Cables and Connectors Cables and Connectors Twisted Pair Cable Connector Pin Outs Note Twisted Pair Cable Connector Pin Outs Twisted Pair Cable for Hub to Computer Network Connection To connect PCs or other network devices to the hub use a straight through Category 3 4 or 5 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 later in this chapter for a listing of the signals used on each pin Straight through cable 12345678 12345678 A tA white orange 1 TN RE E E E E E I white green l green white Pins 1 and 2 must be a twisted pair Pins 3 and 6 must be a twisted pair Pins 4 5 7 and 8 are not used in this application although they may be wired in the cable A 2 Cables and Connectors Twisted Pair Cable Connector Pin Outs Twisted Pair Cable Pin Assignments Twisted Pair Straight Through Cable Hub End Computer or Computer or TransceiverEnd TransceiverEnd Signal Pins Pins Signal receive 1 A 1 transmit receive 2 i 2 transmit transmit 3 3 receive transmit 6 gt 6 rece
10. The Management Module has a Segment Display button By pressing the Segment Display button one time for each segment all Port LEDs in the entire stack will reflect which segment each port is on After 60 seconds the Port LEDs revert to displaying their connection status information rather than segment information m Security Multiple levels of security and network management autho rization for every portinthestack The console can also be configured to have a password before the user logs in m Redundant backup link to another device to enhance network fault tolerance for every port in the stack m Redundant Management Modules If you insert two Management Modules into a stack the second module will take over if the first one fails to give you uninterrupted management 2 4 Troubleshooting This chapter describes how to troubleshoot your stack of hubs Note that if you have a Management Module you can troubleshoot your hubs using software See the Management Module manual for more information This chapter describes how to troubleshoot your hub using m solutions to common problems m LEDs m diagnostic tests Solutions to Common Problems Most problems are caused by the following situations m Incorrect Hub to Hub connections In addition to Extender Cable hub to hub connections you used crossover cable thin coax or fiber cable to make hub to hub connections Remove Switching Hub to Switching Hub connections other than the
11. interpreting the contents so it can be used in either IEEE 802 3 or Ethernet networks and with any upper level protocol The following illustration shows communication when there is no Manage ment Module in the stack Example J ohn is connected to port 11 and transmits data out of his PC Data is repeated out of all ports in this stack because they are all on segment 1 Data comes in Port 11 EP vai E aaa i Hub A ER Tor af P a 7 DP Jeep a CT u COCO OCT gt Hub B If users are distributed on the different segments via a Management Module then data received on a segment is only transferred out the same segment Collision Detection The hub performs collision detection A collision occurs when two nodes try to transmit at the same time When the hub detects this it stops repeating the colliding transmissions and starts transmitting ajamming signal The jamming signal tells the transmitting nodes that a collision has occurred The colliding nodes then stop transmitting for a random amount of time before attempting to retransmit the data Once the collision condition is removed the hub stops transmitting the jamming signal and normal operation is resumed Switching Hub Features How the Hub Works IftheColLEDis on mostof the time because of high traffic levels you can o
12. 4 The declara tion identifies the product the manufacturer s name and address and the applicable specifications that are recognized in the European community DECLARATION OF CONFORMITY according to ISO IEC Guide 22 and EN45014 Manufacturer s Name Hewlett Packard Company Manufacturer s Address 8000 Foothills Blvd Roseville CA 95747 5502 USA declares that the product Product Name HP AdvanceStack 10BT Switching Hub 12R HP AdvanceStack 10BT Switching Hub 24R HP AdvanceStack 10BT Switching Hub 24T Model Number HP J3200A HP J3202A HP J3204A Accessories covered HP J2606A HP J2607A HP J2608A HP J2609A HP J3210A HP J3212A conforms to the following Product Specifications Safety TEC 950 1991 A1 A2 EN60950 1992 A1 A2 EMC EN 55022 1994 CISPR 22 1993 class A EN 55022 1994 CISPR 22 1993 class B 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 LED s in this product s are Class 1 in accordance with EN60825 1 1994 The J3200A J3202A and J3204A have been tested to and pass Class B when shielded network cables are used Tested with Hewlett Packard Co pr
13. B Statement for U S A Only when using shielded cables This equipment has been tested and found to comply with the limits for a Class B digital device pursuant to Part 15 of the FCC Rules These limits are designed to provide reasonable protection againstinterferencein aresidential installation This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instructions may cause interference to radio communications However there is no guarantee that interference will not occur in a particular installation If this equipment does cause interference to radio or television reception which can be deter mined by turning the equipment off and on the user is encouraged to try to correct the interference by one or more of the following measures m Reorient or relocate the receiving antenna m Increase the separation between the equipment and receiver m Connect the equipment into an outlet on a circuit different from that to which the receiver is connected m Consult the dealer or an experienced radio TV technician for help C 9 Auge nbay pue hares Safety and Regulatory Safety and Regulatory Statements Regulatory Statements VCCI Class 1 For J apan Only when using unshielded cables VCC DEE
14. Extender Cable m Loopback Verify the Extender cable is not looped back to the same hub Incorrect Correct m Incorrect cable lengths Maximum cable lengths are in the HP Switchi ng Hubs Installation Gui de Bad cable or cable is not snug Look for loose connections If snug try a different cable Nonstandard cables Miswired cables may cause numerous net work collisions and can seriously impair network performance Use a new correctly wired cable or compare your cable to the cable in appendix A Cables and Connectors for pinouts and correct cable wiring 3 1 Troubleshooting Troubleshooting LED Error Indications LED Error Indications Use the following table to troubleshoot your stack of hubs using the LEDs LED patterns indicating problems Power OFF Collision Fault Security RPS Port Diagnostic Tips Check power cord and power source If OK replace hub ON OFF OFF OFF or flashing intermitt ently Linkbeathas notbeen detected Checkthatthe cabling on the indicated port is connected properly Bad cables are common try a different cable Ifyou have a Management M odule in the stack use HP AdvanceStack Assistant or the ASCII console to determine the state of the port Determine if the port was disabled Re enable if desired ON Appears solidly ON Very frequent collisions could indicat
15. HP AdvanceStack Switching Hubs Reference Guide Copyright 1996 Hewlett Packard Company AII 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 5964 4662 Edition 1 August 1996 Applicable Product HP J 3200A Switching Hub 12R HP J 3202A Switching Hub 24R HP J 3204A Switching Hub 24T HP J 3210A Management Module HP J 3212A Switch Module Hewlett Packard Company 8000 Foothills Boulevard m s 5551 Roseville California 95747 5551 http w ww hp com go netw ork_city Disclaimer The information contained in this document is subject to change without notice HEWLETT PACKARD COMPANY MAKES NO WARANTY OF ANY KIND WITH REGARD TO THIS MATERIAL INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE Hewlett Packard shall not be liable for errors contained herein or for incidental or consequential damages in connection with the furnishing performance or use of this material Hewlett Packard assumes no responsibility for the use or reliability of its software on equipment that is not furnished by Hewlett Packard Warranty A copy of the specific warranty terms applicable to your Hewlett Packard products and replacement parts can be obtained from your HP Sales and Service Office or authorized dea
16. Switch Module Features The plug and play HP J 3212A AdvanceStack 10BT Switch Module inserts into the Expansion Slot of your Switch Hub Link Status Server Connections r r Xcvr amp Fault e 1 2 3 Requires HP J3210A Management Module 1018 NX INY HP J3212A AdvanceStack 10BT Switch Module The features of the Switch Module are m Automatic Port Switching If you have not changed the port con figuration inthe ASCII consoleor HP AdvanceStack Assistant setting up security disabling ports the Management Module will move the ports onto the four different segments for you automatically on power up m Load Balancing In both the ASCII console and HP AdvanceStack Assistant you can select Load Balancing and the software will exam ine your network traffic and redistribute the ports to balance the network load m Connect the Segments Together Users on one segment can com municate with the users on another segment through the Switch Module backplane The Switch Module has four external ports The Xcvr Transceiver port supports twisted pair thin coax and fiber media for external connections to servers at 10 Mbit s Internally the Switch Module connects to the four segments in the hub stack Because the Switch Module requires a Management Module in a managed stack you get all of the features of the Man
17. Symbol fur Dokumentationsverweis Wenn das Produkt mit diesem Symbol markiert ist schlagen Sie bitte in der Produktdokumentation nach um mehr Informationen ber das Produktzu erhalten Fahren Sie nach dem Hinweis WARNING oder CAUTION erst fort nachdem Sie den Gefahrenzustand verstanden und die entsprech enden Ma nahmen ergriffen haben Dies ist ein Ger t der Sicherheitsklasse und verf gt ber einen sch tzenden Erdungsterminal Der Betrieb des Ger ts erfordert eine ununterbrochene Sicherheitserdung von der Hauptstromquelle zu den Ger teingabeterminals den Netzkabeln oder dem mit Strom belieferten Netzkabelsatz voraus Sobald Grund zur Annahme besteht da der Schutz beeintr chtigt worden ist das Netzkabel aus der Wandsteckdose herausziehen bis die Erdung wiederherg estellt ist F r LAN Kabelerdung m WennihrLAN ein Gebiet umfa t das von mehr als einem Stromvertei lungssystem beliefert wird m ssen Sie sich vergewissern da die Sicherheitserdungen fest untereinander verbunden sind m LAN Kabel k nnen gelegentlich gef hrlichen bergangsspannungen ausgesetzt werden beispielsweise durch Blitzoder St rungen in dem Starkstromnetz des Elektrizit tswerks Bei der Handhabung exponi erter 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 Bedienu
18. a di sicurezza siano ben collegati fra loro m icaviLAN possono occasionalmente andare soggetti a pericolose tensioni transitorie ad esempio provocate da lampi o disturbi nella griglia d alimentazione della societ elettrica siate cauti nel toccare parti esposte in metallo della rete Nessun componente di questo prodotto pu essere riparato dall utente Qual siasi lavoro di riparazione messa a punto manutenzione o assistenza va effettuato esclusivamente da personale specializzato Questo apparato non possiede un commutatore principale si mette scotto tensione all inserirsi il cavo d alimentazione 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 simbolo consultar la documentaci n del producto a fin de obtener mayor informaci n sobre el producto WARNING Una WARNING en la documentaci n sefiala un riesgo que podria resultar en lesiones o la muerte CAUTION Una CAUTION en la documentaci n sefiala un riesgo que podria resultar en averias al equipo No proseguir despu s de un s mbolo de WARNING o CAUTION hasta no haber entendido las condiciones peligrosas y haber tomado las medidas apropiadas Este aparato se enmarca dentro de la clase de seguridad y se encuentra protegido por una borna de puesta a tierra Es preciso que exista una puesta a tierra continua desde la toma de alimentaci n
19. agement Module described on the next page for your hub stack 2 3 HON APN NOA BU EZ LU RO Optinizing Your Network Optimizing Your Netw ork Managing Your Network with the Management M odule Managing Your Network with the Management Module By adding the optional HP J 3210A Management Pack to any hub in your stack you can configure diagnose and troubleshoot your stack of hubs RS 232 ANA Voy 1 2 RR Active O Segment OO Fault O O x O 00 Base MAC Address The features of this module are m Port Switching The ability to distribute any stack ports onto 4 available segments By distributing ports onto different collision domains the number of collisions are reduced and bandwidth in creases for each user m Network Management through Two Included Software Inter faces Segment diagnose configure and manage your stack of hubs through either the ASCII console through a serial cable or by using Telnet orthrough the graphical software package HP AdvanceStack Assistant Using either interface from a network management station that supports Management over IP using the configured IP address or Novell NetWare IPX you can remotely manage the stack of hubs The Management Module has SNMP RMON and HP EASE Embed ded Advanced Sampling Environment m Segment Display
20. coustic Noise Geraeuschemission LwA 53 dB am fiktiven Arbeitsplatz nach DIN 45635 T 19 Safety and Regulatory Statements This chapter covers the following topics mounting precautions power precautions safety and regulatory statements Declaration of Conformity Mounting Precautions When you put a hub into a rack follow these mounting precautions The rack or cabinet should be adequately secured to prevent it from becomingunstable and or fallingover The firsthub orsingle hub should be mounted in a position toward the bottom of the rack for stability and to make it easier to stack the other hubs on top Before mounting a hub plan its location and orientation relative to other devices and equipment Also consider the cabling thatwill 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 linch in the front of the hub In the back of the hub allow at least 3 8 cm 11 2 inches of space for the power cord Ensure that the HP Switching Hub s do not overload the power circuits wiring and over current protection To determine the possibility of over loading the supply circuits add together the amperage ratings from the nameplates of all your hubs and other equipment installed on the same circuits and compare the total with the rating limits for the supply circuits Make sure that the power source circuits are proper
21. e a network fault or improperly terminated cable A transceiver attached to the AUI port may not have the SQE test disabled ON Slow Flash OFF Slow Flash The porthas automatically been partitioned because oftoo many collisions Check cable terminations connections SQE setting on any external transceivers and status of attached network devices for causes of the excess collisions ON Slow Flash Slow Flash The Redundant Power Supply RPS may no longer be providing redundant power See the documentation provided with the RPS for troubleshooting OFF OFF The hub is not receiving power from the Redundant Power Supply RPS or the cable connection is loose If you have an RPS connected check the cable connections and the RPS LED ON Rapid Flash Rapid Flash An unauthorized user has tried to access the hub The port is now disabled Use the ASCII console or HP AdvanceStack Assistant to clear the violation ON Rapid Flash Not Flashing An unauthorized network management station has attempted to access a hub Use the ASCII console or HP AdvanceStack Assistant to clear the violation Troubleshooting Diagnostic Tests LED patterns indicating problems Diagnostic Tips Power ON Collision Fault ON Security RPS Port ON 7 Variable A hub hardware failure was detected during self test Self all may test does not co
22. el ctrica hasta las bornas de los cables de entrada del aparato el cable de alimentaci n o el juego de cable de alimentaci n suministrado Si existe la probabilidad de que la protecci n a tierra haya sufrido desperfectos desenchufar el cable de alimentaci n hasta haberse subsanado el problema Puesta a tierra del cable de la red local LAN 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 de la LAN se vean sometidos de vez en cuando a voltajes moment neos que entra en peligro rayos o al teraciones 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 solamente el t cnico Este producto no tiene interruptor de potencia se activa cuando se enchufa el cable de alimentaci n C 7 Ame Gey pue hares Safety and Regulatory Safety and Regulatory Statements Safety Information apanese C 8 Safety Information J apanese
23. ems etc Select Networking Products Download the file Contents Switching Hub Features Introduction ia AAA ane AU died 1 1 Front of the HUB ot AAA 1 2 LED OPIA ani ee ea 1 2 Hub IS entrati de dorica die die ins ans 1 4 Coexistence of Switching Hubs with Other Ethernet Hubs 1 4 Pert EC HODE 14 1 dete eerie a 1 4 ciel anice eee eee ee ta Ne eee ee ee ee ee eae ee ee ee 1 5 MOE DEI sia hth aan ARANA 1 6 Back of the Hubs or 0 tenes AAA doen 1 7 PAS EINER ann naeh 1 7 Redundant Power Supply RPS Connector 5 1 7 med ote Lite Mol PRE IE SET 1 7 BON the HUB OO Se 1 8 LONG DARAN th Suk RR 1 8 Au OO D ta is ee ae roe aii 1 9 LIEBE sd ete eee ved ie 1 10 Optimizing Your Network Automatically Segmenting Your Network 2 2 Reasons for Using an Internal vs External Switch 2 2 HP Internal Switch Module Features 05 2 3 Managing Your Network with the Management Module 2 4 Troubleshooting Solutions to Common Problems 3 1 LED Error Indications i iii a ee a eas 3 2 Diagnostic TESTS EE 3 3 Testing the Hub ar Stack of Hubs 3 3 Testing Twitted Par CADDO sinn 3 4 HP Customer Support Services 3 4 Cables and Connectors Recommended Cables
24. ent 1 If you add a Management Module you can distribute the ports over the four segments This chapter describes the features of the Switching Hubs 1 1 Switching Hub Features Switching Hub Features Front of the Hub Front of the Hub LED Operation LED State Meaning Power green Off The hub is not receiving power On The hub is receiving power Fault On The hub has failed its self test after being powered on or reset Flashing A porthas partitionedora connected RPS has a failure Slowly The corresponding LED will also flash Off The normal state Indicates that there are no fault conditions on the hub Security only Flashing A security violation has occurred on a port The available if a Rapidly corresponding portis flashing atthe same time for the M anagement port violation Otherwise an SNMP intrusion has M odule is installed occurred on the Management M odule This intrusion in the stack may have occurred before the last hub reset To view security violations orturn offflashing LEDs use the ASCII console or HP AdvanceStack Assistant as described in the HP Management M odule Installation and Reference Guide Off No security violation detected the normal state RPS Off This hub is not receiving power from the HP J 2962A Redundant Power Supply RPS On This hub is receiving power from the connected RPS Flashing Anerrorhasoccurredonthe RPS connectedtothe hub Slowly See the documentation provided with t
25. he RPS for troubleshooting Expansion Slot M odule label The LED behavior depends on the module inserted into the Expansion Slot See the module manual for a description of these LEDs Switching Hub Features Front of the Hub LED State Meaning LAN Segment 1 4 Act green Col orange Flickering Flickering Shows the activity and collision status for each segment Segment 2 4 LEDs flicker if you have moved ports to these segments using an optional Management M odule and or Switch M odule Collision LED If collisions are infrequent which is normal the light may be imperceptible In a network with heavy traffic the Col LED will glow and flicker dimly indicating collisions are occurring If it appears on continuously with no flicker itis a possible indicator of a network fault Activity LED ON while a packet is being transmitted Normally the LED appears to flicker In heavy traffic it may be on all the time Xcvr Off On Flashing Slowly Flashing Rapidly There is no transceiver installed or the port has been disabled through the ASCII console or HP AdvanceStack Assistant A Management M odule is in this stack of hubs The Transceiver module is enabled and not partitioned The port has been partitioned The Fault LED will also be flashing at the same rate See Partitioning later in this chapter The port has experienced a security violation The Securi
26. ive A 3 SHLD PUE SSKRD Specifications Physical Width 44 2 cm 17 4 in Depth 29 8 cm 11 7 in Height 6 6cm Weight Hub 12R 4 4 kg 9 71 Ib Hub 24R 4 5 kg 9 95 Ib Hub 24T 4 4 kg 9 75 Ib Electrical TheSwitchingHubs 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 M aximum current LIA 0 6 A Frequency range 50 60 Hz 50 60 Hz The maximum current ratings represent the current that could be drawn with a fully loaded expansion slot and external MAU s B 1 Specifications Specifications B 2 Environmental Operating Non Operating Temperature 0 C to 55 C 40 C to 70 C 32 F to 131 F 40 F to 158 F Relative humidity 15 to 95 at 40 C 104 F 15 to 90 non condensing at 65 C 149 F Maximum altitude 4 6 km 15 000 ft 4 6 km 15 000 ft Connectors The 50 pin and RJ 45 twisted pair ports are compatible with the IEEE 802 3 Type 10Base T standard Electromagnetic Emissions with unshielded cables Emissions with shielded cables Verified to Verified to FCC part 15 Class A FCC part 15 Class B CISPR22 EN55022 Class A CISPR22 EN 55022 Class B VCCI Class 1 VCCI Class 2 Immunity EN50082 1 See the Declaration of Conformity for addi ti onal informati on at the end of this chapter Safety Complies with IEC 950 1991 A1 A2 E N 60950 I 1992 A1 A2 UL1950 CSA 950 NOM 019 SCF1 1993 A
27. ler HP Customer Support Services How to get the latest software agent firmware The hub does not have updatable firmware You can update the following modules HP Management Module firmware j3210a exe HP Switch Module firmware j3212a exe from the HP BBS HP FTP Library Service CompuServe and the World Wide Web After you download the file extract the file by typing filename x For example j3210a exe x HP BBS Set your modem to no parity eight bits 1 stop bit set speed up to 14400 bps and with your telecommunication program e g Windows Terminal dial 208 344 1691 to get the latest software for your HP networking product HP FTP Library Service 1 FTP to Internet IP Address ftp ftp hp com Log in as anonymous and press at the password prompt Enter bin to set the transfer type Enter cd pub networking software Enter getfilename to transfer the file to your computer then quit Un sid NN CompuServe 1 Login to CompuServe 2 Go to the hp service 3 Select HP Systems Disks Tapes etc 4 Select Networking Products library 5 Download filename then quit World Wide Web http w ww hp com go netw ork_city Select the Support section From this web site you can also download information on the HP Switching Hubs and HP AdvanceStack Assistant If you have a growing network download the Designing HP AdvanceStack Workgroup Networks Guide or call 1 800 752 0900 to receive a copy th
28. ly grounded then use the supplied power cord to connect the HP Switching Hub to the circuit See the Safety Statenents in this chapter Do not install the hub in an environment where the operating ambient temperature might exceed 55 C 131 F Make sure the air flow around the sides of the hub is not restricted C 1 Safety and Regulatory Safety and Regulatory Statements Power Precautions Warning AN Caution Note C 2 Power Precautions Follow these precautions when unplugging and plugging in power to the hub as well as adding or removing modules Before installing an optional module into the Expansion Slot Management Slot or transceiver slot unplug the hub Electrical shock or other injury can result if you attempt to install the module without unplugging the hub If you do not install an optional module verify that the cover plates are covering the slot A cover plate is required not only for safety but also to ensure proper hub cooling The rack or cabinet should be adequately secured to prevent it from becoming unstable and or falling over 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 The hub does not have a power switch it is powered on when the p
29. mplete so the LEDs will stay on longer than be ON 60 seconds Power cycle the hub If this condition persists the hub may have to be replaced Contact your HP authorized LAN dealer or HP representative for assistance This LED is not important for the diagnosis The slow flash is approximately once every 1 5 seconds the rapid flash is approximately three times per second Diagnostic Tests When a Management Moduleis installed the HP AdvanceStack Assistant and ASCII console software provide tests and indicators that can be used to monitor the hub and its network connections See the Management Module manual for more information Testing the Hub or Stack of Hubs If you believe that the hub is not operating correctly you can reset the hub to test the hub s circuitry by removing the power cable to that hub To reset a stack either m Remove and reinsert the power cord for each hub m Press the Reset button on an optional Management Module m Select Resetin HP AdvanceStack Assistant or the ASCII console software is provided with the HP Management Module 3 3 BunpagspmouL Troubleshooting Troubleshooting HP Customer Support Services 3 4 Testing Twisted Pair Cabling If you think the cable should work but still isn t working it may not be compatible with the IEEE 802 3 Type 10Base T standard The twisted pair cable attached to the HP Switching Hub must be compatible with this stan dard T
30. ngspersonal durchgef hrt werden Dieses Ger t hat keinen Netzschalter es wird beim Anschlie en des Netzka bels eingeschaltet C 5 Auge nbay pue hares Safety and Regulatory Safety and Regulatory Statements Considerazioni sulla sicurezza C 6 Considerazioni sulla sicurezza Simbolo di riferimento alla documentazione Se ilprodotto contras segnato da questo simbolo fare riferimento alla documentazione sul 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 CAUTIONprima 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 selavostraLAN copreun areaservita da pi di un sistema di distribuz ione elettrica accertatevi che i collegamenti a terr
31. o verify that your cable is compatible with this standard you can use the HP J 2263A Cable Test Set The older HP 28687A Wire Test Instrument can also be used If you would rather have HP test the cable HP offers a wire testing service Contact your HP authorized LAN dealer or your local HP sales office for more information HP Customer Support Services If you are still having trouble with your stack of hubs see the perforated card at the beginning of this manual Cables and Connectors Note This appendix lists cables that have been tested and verified for use with the HP Switching Hubs 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 Recommended Cables Connection Cable Type HP Product Number Switching Hub to Switching Extender Cable 5182 9814 71cm 12 5 inch Hub 5182 9869 31 8 cm 28 inch Hub to end node connection Twisted pair 92268A B C D or N 4 pair straight through 92214R S or T 25 pair cable To connect an HP
32. oducts only Roseville July 8 1996 Sandra L Sheehan Quality Manager European Contact Your loca Hewlett Packard Sales and Service Office or Hewlett Packard GmbH Department TRE Herrenberger Strasse 130 D 71034 B blingen FAX 49 703 1 14 3143 C 11 oye nba pue hares Index A auto segmentation See partitioning backup Management Modules 2 4 blinking rates definition for 1 3 C cables managing 1 7 twisted pair connector Din outs A 2 category 3 4 5 cables A 2 collision detection 1 8 D diagnostic tests 3 3 testing the hub only 3 3 testing twisted pair cabling 3 4 distance of Extender Cables 1 6 Expansion Slot allowed modules 1 7 LEDs for 1 2 Extender Cables repeater hop info 1 5 stack maximum 1 5 external switch differences 2 2 F FaultLED 1 2 flash rates definitions for 1 3 H HP AdvanceStack Assistant 2 4 HP Interconnect Manager SeeHP AdvanceStack Assistant HP Redundant Power Supply RPS connector 1 7 LED 1 2 hub identification 1 4 operation 1 8 Interconnect Manager See HP AdvanceStack Assistant L LEDs Act 1 3 Col 1 3 Expansion Slot 1 2 Fault 1 2 flashing rate definitions 1 3 LAN Segment 1 4 1 3 Power 1 2 RPS 1 2 Security 1 2 Twisted Pair Ports 1 3 Xcvr 1 3 length of Extender Cables 1 6 link beat 1 10 load balancing 2 3 M MAC add
33. ower cord is plugged in The hub s power supply automatically adjusts to any AC power source between 100 127 volts and 200 240 volts There are no voltage range settings to configure When installing the hub note that the AC outlet must be installed near the equipment and should be easily accessible Safety and Regulatory Statements Safety Informaton Safety Information Documentation reference symbol Ifthe productis marked with this Symbol refer to the productdocumentation to getmore information 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 earthing terminals There must be an uninterruptible safety earth ground from the main power source to the product s input wiring terminals power cord or supplied power cord set Whenever it is likely that the protection has been impaired disconnect the power cord until the ground has been restored For LAN cable grounding 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 di
34. ptimize your network by separating nodes onto different segments Each segment is a collision domain By adding the optional Management Module to your stack of hubs you can use management software to specify which segment each node will be placed on Auto Partitioning The hub will automatically partition temporarily disable a network port for the following reasons m acollision condition exists for an excessive duration between 1024 and 2048 bit times m acollision occurs during each of 32 consecutive attempts to transmit m Installed optional transceiver has SQE test enabled instead of disabled The hub monitors the partitioned port and automatically re enables the port when a minimum length packet can be successfully transmitted or received without a collision occurring Excessive collisions may be caused by faulty wiring If a port s transmit Tx wires have been shorted to the receive Rx wires of any port a collision will be detected when that port attempts to transmit If a port s receive Rx wires are not connected properly collisions will occur because the hub cannot detect the presence of network traffic on that port and may thus transmit at inappropriate times A port may occasionally also become partitioned when network traffic is extremely heavy causing an abnormally high collision rate If collisions are high distribute your users onto two three or four segments using the optional Management Module
35. rder the Long Extender Cable 71 cm 28 inch part number 5182 9869 by calling 1 800 538 8787 1 5 Su mi NH Burn Mms Switching Hub Features Switching Hub Features Front of the Hub Each stack can have a maximum of two 71 cm 28 inch cables Using two 28 inch cables and five 12 5 inch cables the maximum distance is 2 9 meters 9 9 feet The following illustration shows a stack of hubs and Long Extender Cable connections that go over an HP Switch 2000 and to a hub in another stack Out 1 2 Extender cable fm Switch 2000 6 Pai Long Extender cable ia Stack Order The stack order is determined by which hub has only an Extender Cable connected to the OUT port Notice that all illustrations in this manual show the top hub with the cable in the OUT port only By following this topology the ASCII console and HP AdvanceStack will accurately report which hub is at the top of the stack and number the hubs beneath it in increasing order 1 6 Switching Hub Features Back of the Hubs Back of the Hubs Power Connector The hub does not have a power switch it is powered on when the power cord is plugged into the power connector The Switching Hubs automatically adjusts to any voltage between 100 127 and 200 240 volts and either 50 or 60 Hz There are no voltage range settings required If a hub were to fail all of the other hubs connected to the
36. ress for each segment 1 4 management module features 2 3 0 on off switch See resetting the hub OUT port 1 6 Index 1 P X partitioning 1 9 Xcvr Transceiver LED port mobility Seeport switching port switching 2 4 power connector 1 7 Power LED 1 2 power supply additional SeeHP Redundant Power Supply R rapid flash rate definition 1 3 redundant backup link 2 4 repeater hop count 1 5 resetting the hub troubleshooting procedure 3 3 RPS Redundant Power Supply LED 1 2 5 Security feature in Management Module 2 4 LED 1 2 Segment Display button 2 4 segments connecting together 2 3 slow flash rate definition 1 3 stack order 1 6 stack to stack connections 1 6 Switch Module features 2 3 switches internal vs external 2 2 T testing hubs 1 4 twisted pair cabling 3 4 troubleshooting 3 1 diagnostic tests 3 3 testing the hub 3 3 testing the twisted pair cables 3 4 twisted pair cable hub to computer connection A 2 pin outs A 2 testing 3 4 twisted pair ports LEDs 1 3 2 Index 13
37. rough mail HEWLETT PACKARD Obtain the latest console code j3210a exe from HPFTP Library ftp ftp hp com World Wide Web http www hp com go network_city HP BBS 208 344 1691 PRE over y CompuServe Network Phone In 1 800 790 5544 Support hourly HP FIRST Fax Retrieval Service HP FIRST is an automated fax retrieval service that is available 24 hours a day seven days a week HP FIRST provides information on the following topics m Product information m Troubleshooting instructions m Technical reviews and articles m Configuration information To access HP FIRST dial one of the following phone numbers Location Phone Number U S and Canada Only Dial 1 800 333 1917 with your fax machine or touch tone phone and press 1 Outside the U S and Canada Dial 1 208 344 4809 from your fax machine and press 9 To receive a listof currently available documents enter document number 19941 The information you requested will be sentto you by return fax HP Network Phone In Support NPS In addition to the above services the HP Network Phone In Support NPS service provides expert technical assistance for U S A customers through an NPS contractor at an hourly rate 1 800 790 5544 Monday through Friday 5 am to 6 pm Pacific Time You may also contact your HP Authorized Reseller or the nearest HP Sales and Support Office to purchase an NPS contract Go the hp service Select HP syst
38. sturbances in the electrical utilities power grid Handle exposed metal components of the network with caution Servicing There are no user serviceable parts inside these products Any servicing adjustment maintenance or repair must be performed only by service trained personnel These products do not have a power switch they are powered on when the power cord is plugged in C 3 Auge Gey pue hares Safety and Regulatory Safety and Regulatory Statements Informations concernantla s curit C 4 Informations concernant la s curit Symbole de r f rence la documentation Si le produit est marqu de cesymbole reportez vous la documentation du produitafin d obtenir 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 a 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 une borne de mise la terre La source d alimentation principale doit tre munie d une prise de terre de s curit install e aux bornes du c blage d entr e sur le cordon d alimentation ou le cordon deraccordement fourni avec le produit Lorsque cette protection
39. ty LED will also be flashing at the same rate To turn offflashing LEDs select Security from the ASCII console or HP AdvanceStack Assistant Twisted Pair Ports Off On Flashing Slow ly Flashing Rapidly The port is not receiving the link beat signal from the attached node or the port is disabled The portis enabled and link beat is detected from the attached node The port has been partitioned The Fault LED will also be flashing at the same rate See Partitioning later in this chapter The port has experienced a security violation The Security LED will also be flashing at the same rate To turn off flashing LEDs select Security from the ASCII console or HP AdvanceStack Assistant The slow flash rate is approximately once every 1 5 seconds The rapid flash rate is approximately 3 times each second This condition can exist only if a Management Module is installed in the hub 1 3 Su mii qH bug mms Switching Hub Features Switching Hub Features Front of the Hub 1 4 Hub Identification Below the AUI Xcvr Transceiver port is a label with the Hub Identification number and serial number The Hub Identification number is displayed in the ASCII console and HP AdvanceStack Assistant to identify the hub in thestack The format is 123 1234567 The Hub Identification number is not the MAC address The Switching Hub does not have a MAC address because it cannot be managed witho
40. ut a Management Module See the Management Module manual for information on the MAC addresses for a stack Coexistence of Switching Hubs with Other Ethernet Hubs If you have an existing stack of hubs connect a network cable from one stack to the other as shown on the topology card included with the hubs 5182 9815 Resetting the Hubs You can reset the hub by unplugging and plugging back in the power cord each hub does not have a reset button By reinserting the power cord the hub performs the power on self test No configuration is changed Switching Hub Features Front of the Hub Extender Cables The Extender Cableis for communication between users on the same segment across the stack Use the Extender Cable to connect up to 8 hubs together to make one segment Asonesegment the connected stack of hubs are considered to be one repeater hop On initial bootup all users are placed on segment 1 if no Management Module is present 1 Extender Cable gt y 2 I 3 4 One repeater hop I 5 E y 6 J 7 8 Without theE xtender Cable each Switching Hub hasitsown collision domain If you need to manage your stack of hubs or segment your hubs into different collision domains see chapter 2 Optimizing Your Network Stacked hubs can be close together or physically distributed Each Extender Cable included with a hub is 31 8 cm 12 5inches For longer distances o
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