HP 100BaseT Reference Guide
Contents
1. LAN LAN LAN2. Safety and Regulatory Statements D 7 HP Hub 8TXE Installation and Reference Guide Regulatory Statements FCC Class A Statement for U S A Only This equipment has been tested and found to comply with the limits for a Class A digital device pursuant to Part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instruction manual may cause interference to radio communications Operation of this equipment in a residential area may cause interference in which case the user will be required to correct the interference at his own expense CVCC D 8 Safety and Regulatory Statements HP Hub 8TXE Installation and Reference Guide European Community This equipment complies with ISO IEC Guide 22 and EN55022 Class A with unshielded cables
3. 77 X0 Figure B 1 RJ 45 Connector on the Hub Side MDI X Assignment MDI Assignment EN Port 1 8 Cascade Port 8 1 Receive Data Transmit Data 2 Receive Data Transmit Data 3 Transmit Data Receive Data 6 Transmit Data Receive Data 457 8 NotUsed Not Used Table B 1 RJ 45 Pin Assignments Schematics for both straight and crossover twisted pair cable are shown below Straight Through Crossover Hub Adapter Hub Hub 1 IRD OTD 1 IRD 1 IRD 2 IRD e OTD 2 IRD 2 IRD 3 OTD 3 IRD 3 OTD 3 OTD 6 OTD 6 IRD 6 OTD 6 OTD Cable and Port Assignments B 1 Appendix C Product Specifications Transmission Technique Topology Access Method Standards Conformance Media Supported Interfaces Hub to Workstation Distance Cascade Distance 2 hubs Dimensions Power System Temperature Humidity Certification Emissions Safety Acoustic Noise Baseband Star or Tree CSMA CD 100Mbit s IEEE 802 3u 100BASE TX Class Il Repeater Unshielded or shielded twisted pair cable 1000 Category 5 STP UTP 8 RJ 45 MDI X ports 1 RJ 45 MDI cascade port 100 meters maximum using category 5 STP or UTP cable 23 meters assuming 100 meters from each node to hub 273 mm x 166 mm x 42 9 mm 10 75 x 6 54 x 1 69 100 127 200 240 VAC 1 Amp max voltage tolerance 10 50 60 Hz full range 0 C to 40 C Standard Operatin
4. If you still can t resolve the problem please refer to Troubleshooting in Appendix A Installing the System 2 5 Chapter 3 Configuring the Network The HP Hub 8TXE allows great flexibility in configuring your network You can use it in a stand alone or multiple hub configuration Some of the common applications for this Fast Ethernet hub are described in this chapter Stand Alone This hub can be used in a simple stand alone configuration as illustrated below In compliance with IEEE 802 3u standards the maximum cable distance between the hub and any workstation is 100 meters for twisted pair cable Figure 3 1 Stand Alone Configuration Configuring the Network 3 1 HP Hub 8TXE Installation and Reference Guide Connecting Multiple Hubs You can easily connect to another hub via the MDI cascade port Figure 3 2 shows a sample configuration Gi a The twisted pair cable a zii le A J is 100 meters long ER en LS 23 meters maximum for a O hub to hub cabling used in J i this specific configuration se 1 2 su oe MDI gt If the twisted pair cable for nodes Aand B are both m 100 meters long then the ficca The twis
5. HP AdvanceStack 100Base T Hub 8TXE Installation and Reference Guide Copyright 1996 Hewlett Packard Company All Rights Reserved Reproduction adaptation or translation without prior written permission is prohibited except as allowed under the copyright laws Publication Number J3235 90001 Edition 1 November 1996 Applicable Product HP J3235A AdvanceStack 100Base T Hub 8TXE 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 See the warranty booklet included with the product A copy of the specific warranty terms applicable to your Hewlett Packard product and replacement parts can be obtained from your HP sales and service office or HP authorized reseller Hewlett Packard Company 8000 Foothills Boulevard m s 5551 Roseville California 95747 5551 http www hp com go network_city Package Contents Carefully unpack the contents of the package and verify them agai
6. These indicators monitor the share of valid network frames handled by the hub within a 100 Mbit s bandwidth They provide a quick way to monitor the current traffic load relative to the network s capacity Collision Collision The statistical indicators show the percentage of packet collisions occurring out of the total packets transmitted by the hub Collisions occur when two or more devices connected to a hub attempt to transmit data simultaneously on the network When a collision occurs devices pause and then re transmit after a pseudo random wait period Because wait periods differ among devices successive collisions become increasingly improbable The Collision LEDs assist the network manager in monitoring the percentage of packet collisions occurring relative to the total packets transmitted by the hub When collisions reach a level marked on the front panel display the correspond ing LED lights up For example if packet collisions reach 1 the LED labeled 1 will light up However if collisions go beyond 1 e g 15 the LED labeled 15 and all the other LEDs before it i e 1 3 5 and 10 also light up in rapid succession Hardware Reference 4 3 HP Hub 8TXE Installation and Reference Guide Note If the hub displays a high collision rate check to see if any of the connected devices are malfunctioning or if a loop has been formed in your network connections Otherwise you may need to reconfigure your network to bal
7. 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 D 3 HP Hub 8TXE Installation and Reference Guide Hinweise zur Sicherheit Symbol fur Dokumentationsverweis Wenn das Produkt mit diesem Symbol markiert ist schlagen Sie bitte in der Produktdokumentation nach um mehr Informationen uber das Produkt zu erhalten WARNING Symbol f r Dokumentationsverweis Wenn das Produkt mit diesem Symbol markiert ist schlagen Sie bitte in der Produktdokumentation nach um mehr Informationen uber das Produkt zu erhalten CAUTION Symbol fur Dokumentationsverweis Wenn das Produkt mit diesem Symbol markiert ist schlagen Sie bitte in der Produktdokumentation nach um mehr Informationen uber das Produkt zu erhalten Fahren Sie nach dem Hinweis WARNING oder CAUTION erst fort nachdem Sie den Gefahrenzustand verstanden und die entsprechenden Ma nahmen ergriffen haben Dies ist ein Gerat der Sicherheitsklasse I und verf gt ber einen sch tzenden Erdungsterminal Der Betrieb des Gerats erfordert eine ununterbrochene Sicherheitserdung von der Hauptstromquelle zu den Ger teingabeterminal
8. 50 to 60Hz The unit is equipped with a universal full range power source 4 6 Hardware Reference Appendix A Troubleshooting Diagnosing Hub Indicators This Fast Ethernet hub can be easily monitored through its comprehensive panel indicators These indicators assist the network manager in identifying problems the hub may encounter This section describes common problems you may encounter and possible solutions Symptom Cause Solution Symptom Cause Solution Symptom Cause Solution Power indicator does not light up Defective power outlet power cord or internal power supply Check power cord and power source connections If connections are secure then try a different outlet or try a different power cord to see if the power cord is the problem If the problem persists contact your HP authorized dealer or reseller Partition indicator lights up Hub has partitioned a port If port partitioning has occurred the hub will automatically enable the port when the faulty condition disappears Link Traffic indicator remains unlit after making a connection Network interface e g a LAN adapter on the attached device network cable or hub port is defective Verify that the hub and attached device are powered on Be sure the cable is plugged into both the hub and corresponding device Verify that the proper cable type is used Chapter 2 and that its length does not exceed 100 meters Check the LAN adapter o
9. STP or UTP Friendly design that monitors network utilization collisions link and port partition status LED indicator panel includes Utilization and Collision rate indicators for reporting hub activity and facilitating problem diagnosis Automatically partitions bad ports to protect the network system Automatic polarity detection and correction permits automatic adjustment for wiring errors Plug and play operation The HP Hub 8TXE also supports the following basic system safeguards This hub features automatic partitioning and reconnection jabber lockup protection and automatic polarity detection for network cabling With automatic partitioning and reconnection any port is automatically isolated if excessive collisions occur on it When the condition is corrected the port is automatically reconnected 1 2 Product Overview HP Hub 8TXE Installation and Reference Guide e With the jabber lock up function the hub automatically stops transmission of abnormal Ethernet frames that may cause data loss for all network users Jabber refers to abnormal Ethernet frames which are much too long and may come from a malfunctioning Ethernet card e With automatic polarity detection the hub recognizes and adjusts for attached cable assemblies which may be wired with incorrect polarity on the receive pair Product Overview 1 3 Chapter 2 Installing the System This chapter provides information on installing the HP Hub 8TXE estab
10. Safety and Regulatory Statements D 5 HP Hub 8TXE Installation and Reference Guide Consideraciones sobre seguridad 1 Simbolo de referencia a la documentaci n Si el producto va marcado con este AN s mbolo consultar la documentaci n del producto a 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 0 la muerte CAUTION Una CAUTION en la documentaci n se ala un riesgo que podr a resultar en aver as al equipo No proseguir despu s de un s mbolo de WARNING o CAUTION hasta no haber entendido las condiciones peligrosas y haber tomado las medidas apropiadas Este aparato se enmarca dentro de la clase 1 de seguridad y se encuentra protegido por una borna de puesta a tierra Es preciso que exista una puesta a tierra continua desde la toma de alimentaci n el ctrica hasta las bornas de los cables de entrada del aparato el cable de alimentaci n o el juego de cable de alimentaci n suministrado Si existe la probabilidad de que la protecci n a tierra haya sufrido desperfectos desenchufar el cable de alimentaci n hasta haberse subsanado el problema Puesta a tierra del cable de la red local LAN m SilaLAN 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 so
11. and EN55022 Note With unshielded cables this is a Class A product In a domestic environment this product may cause radio interference in which case the user may be required to take adequate measures Canada This product complies with Class A Canadian EMC requirements Safety and Regulatory Statements D 9 Appendix E Product Support Services Hewlett Packard offers support through the use of automated electronic services including e World Wide Web e HP Network Phone In Support NPS e HP FIRST FAX Retrieval Service World Wide Web http www hp com go network_city From this web site you can view information about HP s complete networking product line If you have a growing network and need help designing it download the Designing HP AdvanceStack Workgroup Networks Guide or call 1 800 752 0900 to receive a copy through mail HP FIRST Fax Retrieval Service HP FIRST is an automated fax retrieval service that is available 24 hours a day seven days a week HP FIRST provides information on the following topics Product information Troubleshooting instructions Technical reviews and articles Configuration information Product Support Services E 1 HP Hub 8TXE Installation and Reference Guide To access HP FIRST dial one of the following phone numbers Location Phone Number U S and Canada Only Dial 1 800 333 1917 with your fax machine or touch tone phone and press 1 Outside the U S and Canada Di
12. connecting an MDI port on one device e g port 8MDI on this hub to an MDI X port on the other device Or you can cascade from an MDI port on another device to any MDI X port on this hub See Figure 4 1 Making a Connection via an MDI X Port You can connect an RJ 45 port on the hub to any device that uses a standard network interface such as a workstation or server or also to a network interconnection device such as a bridge or router depending on the port type implemented 1 Prepare the network devices you wish to network Make sure you have installed suitable 100BASE TX network interface cards for making a connection to any of the hub s ports You also need to prepare straight through shielded or unshielded twisted pair cables with RJ 45 plugs at both ends Use 100Q Category 5 cable for all connections 2 Connect one end of the cable to the RJ 45 port of the network interface card and the other end to any available MDI X port on the hub When inserting an RJ 45 plug be sure the tab on the plug clicks into position to ensure that it is properly seated Using the hub in a stand alone configuration you can network up to 8 nodes VW Do not plug a phone jack connector into the RJ 45 port This may damage the hub Use only twisted pair cables with RJ 45 connectors that conform with FCC standards Notes 1 When connecting to port 8 do not use port 8 MDI X 2 Make sure each twisted pair cable does not exceed 100 meters 2 2 Ins
13. 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 appropriate steps Grounding These are safety class I 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 distribution system be sure their safety grounds are securely interconnected m LAN cables may occasionally be subject to hazardous transient voltages such as lightning or disturbances in the electrical utilities power grid Handle exposed metal components of the network with caution 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 D 2 Safety and Regulatory Statements HP Hub 8TXE Installation and Reference Guide Informations concernant la s curit Symbole de r f rence a la documentation Si le
14. these indicators refer to Chapter 4 Link Indicates that the port has established a valid network connection Traffic Indicates traffic traversing the port Partition Indicates that the port has been isolated from the hub when pre defined collision threshold has been reached 2 4 Installing the System HP Hub 8TXE Installation and Reference Guide If the Link status indicator is not functioning properly or you experience any other difficulties in setting up the hub refer to Appendix A Verifying System Operation Verify that all attached devices have a valid connection The hub monitors link status for each port If any device is properly connected to the hub and transmitting a link beat signal the Link indicator lights up for the corresponding port If the Link indicator fails to light up when you connect a device to the hub check the following items Be sure the twisted pair cable is properly attached to the connected device and the hub Verify that the RJ 45 plug snaps into place when attached See if the twisted pair cable is functioning properly by using it for another port and attached device that already displays valid indications when connected to the network Check the length of the twisted pair connection to be sure it does not exceed 100 meters Verify that the cable is Category 5 Test the adapter for an attached workstation by trying it in another computer that has been successfully connected to the network
15. al 1 208 344 4809 from your fax machine and press 9 To receive a list of currently available documents enter document number 19941 The information you requested will be sent to you by return fax Additional HP Support Services In addition to the above services you can purchase various HP telephone support services which provide you expert HP technical assistance e Network Phone In Support provides you support at an hourly rate In the USA call 1 800 790 5544 In other countries please contact your local HP Response Center to see if this service is available in your country e HP SupportPack Comprehensive Network Support provides complete problem resolution for medium to large interconnected local and wide area networks Contact your HP Authorized Reseller or the nearest HP Sales and Support Office for more information e HP SupportPack LAN Support provides assistance with NOS usage fault isolation and problem resolution for small to medium LANs available in 5 and 10 incident packages Contact your HP Authorized Reseller or the nearest HP Sales and Support Office for more information E 2 Product Support Services Glossary 100BASE TX IEEE s specifications for 100 Mbit s Ethernet using twisted pair cable 1000 STP or UTP The maximum length of cable for a hub to end node connection is 100 meters Cascade Port An MDI RJ 45 port used to cascade compatible devices in a cascade configuration using straight through twiste
16. ance the traffic load Port Status Display Partition Color Orange Function Shows if the port has been isolated from the network Indication ON Indicates port has been partitioned due to an abnormal network condition OFF partitioned A port is temporarily partitioned when a line error or too many collisions are detected on the attached segment While it is automatically partitioned the port continues to receive data from the segment However data is not transmitted onto the segment When the problem is corrected or a valid data packet is received through the port the port is automatically reconnected When partitioning occurs the port s corresponding Partition LED will be continually lit orange light Otherwise this LED should be OFF unlit Note When a long run of collisions occur on the cable connected to a hub port i e 64 collisions that port is automatically partitioned by the hub It is automatically reconnected when a collision free data packet at least 512 bits long i e a minimum size legal packet passes through the port Link Color Green Function Indicates a valid network connection associated with the port ON OFF 4 4 Hardware Reference Indicates a valid link has been established on this port No valid link has been established on this port HP Hub 8TXE Installation and Reference Guide Troubleshooting If the Link LED does not light up when a device is connected to its corre spondi
17. anneggiare le attrezzature Non procedere oltre un avviso di WARNING o di CAUTIONprima di aver compreso le condizioni di rischio e aver provveduto alle misure del caso Questo prodotto omologato nella classe di sicurezza I ed ha un terminale protettivo di 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 se la vostra LAN copre un area servita da pi di un sistema di distribuzione elettrica accertatevi che i collegamenti a terra di sicurezza siano ben collegati fra loro 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 Qualsiasi lavoro di riparazione messa a punto manutenzione o assistenza va effettuato esclusivamente da personale specializzato Questo apparato non possiede un commutatore principale si mette scotto tensione all inserirsi il cavo d alimentazione
18. d pair cable To cascade two devices either run a connection from the cascade port on one device to an MDI X port on the other device or cascade the two devices by running crossover cable between similar port types on both devices Collision A condition in which two packets transmitted over a medium interfere with each other Their interference makes both unintelligible Configuration The way to set up a computer server or local area network Connection A logical binding between two or more users of an interconnection service Ethernet A network communication system developed and standardized by DEC Intel and Xerox using baseband transmission CSMA CD access and logical bus topology and coaxial cable The successor IEEE 802 3 standard provides for integration into the OSI model and extends the physical layer and media with repeaters and implementations that operate on fiber optics broadband and twisted pair Glossary 1 HP Hub 8TXE Installation and Reference Guide Fast Ethernet 100 Mbit s network communication system based on Ethernet and the CSMA CD access method IEEE 802 3 Standard Standard for the physical and electrical connections in local area networks developed by the IEEE The IEEE 802 3u standard covers these same issues for 100 Mbit s networks LED Light emitting diode on the front panel of the hub used for monitoring a hub or network condition An LED display corresponds to a hub condition L
19. d ports Use 1000 Category 5 straight through cable for all standard twisted pair connections 2 Make sure all devices are connected to the network Equipment may have been unintentionally disconnected from the network 3 When cascading two devices using RJ 45 ports at both ends of the cable i e not the MDI port make sure a crossover cable is used Crossover cable should only be used if a cascade port is not available A 2 Troubleshooting HP Hub 8TXE Installation and Reference Guide LAN Adapters Make sure the network interface hardware and software drivers for the attached devices are function properly and are 100Base TX Check the LAN adapters and associated drivers used in any attached workstation or server Physical Configuration If problems occur after altering the network configuration restore the original connections then try to track the problem down by implementing the new changes one step at a time Ensure that cable distances and other physical aspects of the installation do not exceed 100Base TX specifications Hub Integrity As a last resort verify the hub s integrity with a power on reset Turn the power to the hub off and then on a few times If the problem still persists and you have completed all the preceding diagnoses contact your HP authorized dealer or reseller for further assistance Refer to Appendix E Troubleshooting A 3 Appendix B Port and Cable Assignments RJ 45 Port
20. e HP Hub 8TXE is 80 bit times or a cable equivalent length of 72 meters The 100Base TX maximum cable distance network diameter is 367 meters And the maximum distance from a hub to an end node is 100 meters To cascade two 100Base TX Hub 8TXEs together we must do this calculation For an end node on one hub to communicate with an end node on the other hub the cable distance from end nodes to hubs would be 100m 100m perhaps a bit less but we should consider worst case The packets would Installing the System 2 3 HP Hub 8TXE Installation and Reference Guide traverse through both hubs for a cable equivalent length of 72m 72m This gives 100m 100m 72m 72m 344m The maximum network diameter for 100Base TX is 367m so we can use a maximum of 367m 344m or 23m between the two hubs Figure 3 2 illustrates this example Providing Power to the Hub 1 Power on the hub by plugging the power cord into the power socket at the rear of the hub and the other end into a power outlet 2 Check the LED marked Power on the front panel to see if it is on The unit will automatically select the setting that matches the connected input voltage Therefore no additional adjustments are necessary when connecting it to any input voltage within the range marked on the rear panel Verifying Port Status Check each connection by viewing the port status indicators listed below For a more detailed description of
21. easily integrated into an existing 10 Mbits s Ethernet environment with no need for protocol translation or changes to network software HP Hub 8TXE The HP J323SA AdvanceStack 100Base TX Hub 8TXE includes 8 Fast Ethernet ports It provides a friendly design that simplifies installation and network troubleshooting The indicator panel includes Utilization and Collision rate LEDs as well as Partition Link and Traffic LEDs to ease network management The HP Hub 8TXE can be used to relieve common network congestion regardless of whether it is caused by too many stations contending for limited bandwidth or by a server that is supporting too many users It can significantly improve access both to key servers and to the network backbone This hub not only delivers a vast improvement in network response time but helps you maintain outstanding performance as your user community continues to grow Product Overview 1 1 HP Hub 8TXE Installation and Reference Guide Basic Features Transmits data at 100 Mbits s for demanding applications Conforms to the IEEE 802 3u repeater specification for 100Base TX Provides 8 RJ 45 100Base TX ports using MDI X wiring Port 8 can serve as an MDI X port for connection to network devices such as workstations or servers or as an MDI daisy chain port for connection to network devices such as hubs or switches eliminating the need for crossover cables Supports 1009 Category 5 shielded or unshielded cable
22. eguridad ernennen D 6 Safety Information Japanese nennen nennen entren nennen D 7 Regulatory Statements ss D 8 Appendix E Product Support Services E 1 Glossary Index viii Contents HP Hub 8TXE Installation and Reference Guide List of Figures Figure 3 1 Stand Alone Configuration 3 1 Figure 3 2 Multiple Hub Configuration Using the Cascade Port 3 2 Figure4 1 Front P nels natura EE 4 1 Figure 4 2 Indicators esee acari 4 2 Figure4 3 Rear Panel eene eee leali 4 6 Figure B 1 RJ 45 Connector on the Hub Side B 1 List of Tables Table B 1 RJ 45 Pin AssignmentS ii B 1 Contents ix Chapter 1 Product Overview Introduction to Fast Ethernet Standard 10 Mbits s Ethernet has served well for past generations of 286 and 386 machines performing simple file transfers However with the inevitable growth in corporate network size and the introduction of fully functional 32 bit PC architectures and operating systems running complex applications 10 Mbits s Ethernet has become a serious bottleneck With the recent flood of choices for upgrading media bandwidth 100 Mbits s Fast Ethernet has become the most popular because of its low cost compatibility with existing Ethernet applications and the fact that it can run on top of an installed base of twisted pair cabling Fast Ethernet can be
23. etween two end nodes for Fast Ethernet iv Quick Installation About this Guide This guide is designed for the experienced network installer It describes how to install and operate the HP Hub 8TXE After reading this manual you should be able to use the front display panel and configure options to manage all your network connections This manual covers the following topics Chapter 1 Product Overview Brief description of Fast Ethernet followed by a description of this hub and a summary of its important features and specifications Chapter 2 Installing the System Installing an HP Hub 8TXE and making basic network connections Chapter 3 Configuring the Network Shows sample network configurations for a local area network Chapter 4 Hardware Reference Detailed description of indicator panel and ports Appendices Troubleshooting cable assignments and product specifications About this Guide V Contents Chapter 1 Product Overview ss 1 1 Introduction to Fast Ethernet 1 1 HP H b 8 EXE 5 n Man ee Hasen he 1 1 Basic Features zuo eas RE 1 2 Chapter 2 Installing the System 2 1 Pre Installation Requirements ss 2 1 Connecting the Hub System 2 2 Making a Connection via an MDI X Port errs 2 2 Making a Connection via the MDI Cascade Port 2 3 Distance Limit for Fast Ethernet Cabling i 2 3 Providing Power to the Hub ss 2 4 Veri
24. ference 4 1 HP Hub 8TXE Installation and Reference Guide The front panel array provides indicators that show the utilization of network bandwidth and indicate the status of port connections It includes port status indicators and a statistical display for network traffic as shown below HEWLETT PACKARD HP J3235A AdvanceStack Hub 8TXE Utilization Partition 1 5 15 30 6 1 2 3 4 5 6 7 8 v 1 3 5 10 1 12 3 4 5 6 Eower Collision Link Activity Figure4 2 Indicators Power Color Green Function Power indicator Condition Indication ON Unit is receiving power OFF Power is disconnected no power received 4 2 Hardware Reference HP Hub 8TXE Installation and Reference Guide Statistical Display for System Performance Utilization Utilization The statistical indicators show the percentage of valid data passing through all ports compared to overall network bandwidth updated every 0 5 seconds There are 5 LEDs representing the percentage of network utilization The corresponding LEDs light up to show that the utilization of LAN bandwidth has reached this level When active these LEDs behave like a stereo s equalizer display For example if network utilization reaches 1 the LED labeled 1 will light up However if network utilization rises above 1 e g 30 the LED labeled 30 and all the other LEDs before it 1 e 1 5 and 15 will also light up in rapid succession
25. fying Port Status terere teh ri 2 4 Verifying System Operation een diee p UG em HER RH ire ee ERU 2 5 Chapter 3 Configuring the Network 3 1 Stand Alone iip Pede dee eae ON npn dtm tenis 3 1 Connecting Multiple HDS 3 2 Chapter 4 Hardware Reference sess 4 1 Front ZIO Mem 4 1 O 4 2 Statistical Display for System Performance 4 3 Port Status Display EE 4 4 RJ 45 Fast Ethernet POrts ene Lena iaia 4 5 Rear Panel SE 4 6 Power Socket aee A eoo eap bum oo 4 6 vii HP Hub 8TXE Installation and Reference Guide Appendix A Troubleshooting eeeeeee A 1 Diagnosing Hub Indicators esses eene ss A 1 System Diagnostics eee etna ee pene eee edes A 2 Power and Cooling Problems ss A 2 Installatio SRE EE A 2 Physical Configuration SSR A 3 Hub Integrity ce cederet rere EI A 3 Appendix B Port and Cable Assignments B 1 RAS Port ied eee aot Dati terne ti ten oret asa lho B 1 Appendix C Specifications C 1 Product Specifications iii C 1 Appendix D Safety and Regulatory Statements D 1 Power Pr cautions SEE EE D 1 Safety Information 2 erre tei dne nr esee ERE age sense D 2 Informations concernant la s curit D 3 Hinweise zur Sicherheit eere ara D 4 Considerazioni sulla sicurezza sien D 5 Consideraciones sobre s
26. g 5 to 95 Noncondensing CE Mark FCC Class A VCCI Class 1 CISPR Class A UL1950 CSA950 NOM 019 SCFI 1994 TUV GS Geraeuschemission LwA 50 dB fiktiven Arbeitsplatz nach DIN 45635T 19 Product Specifications C 1 Appendix D Safety and Regulatory Statements This chapter covers the following topics m power precautions m safety and regulatory statements Power Precautions Follow these precautions when unplugging and plugging in power to the hub Caution If your installation requires a different power cord than the one supplied with the hub be sure to use a power cord displaying the mark of the safety agency that defines the regulations for power cords in your country The mark is your assurance that the power cord can be used safely with the hub Note The hub does not have a power switch it is powered on when the power cord is plugged in The hub s power supply automatically adjusts to any AC power source between 100 127 volts and 200 240 volts There are no voltage range settings to configure When installing the hub note that the AC outlet must be installed near the equipment and should be easily accessible Safety and Regulatory Statements D 1 HP Hub 8TXE Installation and Reference Guide Safety Information Documentation reference symbol If the product is marked with this symbol refer to the product documentation to get more information about the product WARNING A WARNING in the
27. lishing network connections and configuring the system You may install this hub on any level surface e g a table or shelf or in a standard EIA equipment rack However please take note of the following minimum site requirements before you begin Pre Installation Requirements Before you start actual hardware installation make sure you can provide the right operating environment including power requirements sufficient physical space and proximity to other network devices that are to be connected Verify the following installation requirements e Power requirements 100 to 127 VAC 200 to 240 VAC 10 at 50 to 60 Hz The hub s power supply automatically adjusts to the input voltage level e The hub should be located in a cool dry place with at least 10 cm of space at the front and back for ventilation e Place the hub out of direct sunlight and away from heat sources or areas with a high amount of electromagnetic interference e Check if network cables and connectors needed for installation are available e Find a suitable location at the center of the devices you want to link and near a power outlet Installing the System 2 1 HP Hub 8TXE Installation and Reference Guide Connecting the Hub System The HP Hub 8TXE has 8 RJ 45 ports and 1 RJ 45 cascade port The ports allow you to make connections to devices such as a workstation server bridge or router You can also cascade to another compatible hub or switch by
28. metidos 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 solamente el t cnico Este producto no tiene interruptor de potencia se activa cuando se enchufa el cable de alimentaci n D 6 Satety and Regulatory Statements HP Hub 8TXE Installation and Reference Guide Safety Information Japanese N WARNING WARNING CAUTION CAUTION WARNING CAUTION 1
29. mitted by any node is concurrently available to all other nodes within the same local network i e immediate collision domain Unshielded Twisted Pair UTP Cable composed of two insulated wires twisted together to reduce electrical interference used in common telephone cord Glossary 3 Index A Automatic Partitioning 1 2 Automatic Polarity Detection 1 3 C Cable Assignments B 1 Configuring the Network 3 1 Connecting Multiple Hubs 3 2 Connecting the Hub System 2 2 Connection Verifying 2 5 Crossover Cable B 1 D Distance Limit for Fast Ethernet Cabling 2 3 E Ethernet Ports 4 5 F Front Panel 4 1 H Hardware Description 4 1 Index Indicator Panel 4 1 Installation Requirements 2 1 Installing the System 2 1 Introduction to Fast Ethernet 1 1 J Jabber Lock up 1 3 L LED Indicators Collision 4 3 Link 4 4 Partition 4 4 Power 4 2 Traffic 4 5 Utilization 4 3 Link Indicator 2 5 MDI Cascade Port 3 2 N Network Connection MDI Cascade Port 2 3 MDI X Port 2 2 HP Hub 8TE Installation and Reference Guide P Port Assignments B 1 Port Status Indicators 4 4 Power Socket 4 6 Product Features 1 2 Product Support Services E 1 Providing Power to the Hub 2 4 R Rear Panel 4 6 Regulatory Information D 1 D 8 S Safety Information D 1 D 2 Specifications Certification C 1 Interfaces C 1 Media Supp
30. n the attached device and cable connections for possible defects Replace the defective LAN adapter or cable if necessary Use the diagnostic procedures described in the following section to verify that all other system components are functioning properly If you still cannot resolve the problem contact your HP authorized dealer or reseller Troubleshooting A 1 HP Hub 8TXE Installation and Reference Guide System Diagnostics Power and Cooling Problems If the Power indicator does not turn on when the power cord is plugged in you may have a problem with the power outlet power cord or internal power supply as explained in the previous section However if the unit powers off after running for a while check for loose power connections power losses or surges at the power outlet and verify that the fan on the back of the unit is unobstructed and running prior to shutdown If you still cannot isolate the problem then the internal power supply may be defective In this case contact your HP authorized dealer or reseller for assistance Installation Verify that all system components have been properly installed If one or more components appear to be malfunctioning e g the power cord or network cabling test them in an alternate environment where you are sure that all the other components are functioning properly Cabling 1 Verify that the cabling type is correct Be sure all cable connectors are securely seated in the require
31. ng port check that both the hub and connected device are powered on For devices connected to the hub using twisted pair cable check that the cable length does not exceed 100 meters You should have standard straight through cables and not crossover or other specialized cables Traffic Color Green Function Indicates traffic entering the port BLINKING Indicates the port is receiving packets blinking is proportional to the traffic entering the port OFF No packets are being received by this port RJ 45 Fast Ethernet Ports This hub includes 8 Fast Ethernet ports on the front panel of which Port 8 can also serve as a cascade port Connect the MDI X ports to network devices such as workstations or servers and the MDI port to a network interconnection device such as another hub or switch Remember that you cannot connect to port 8 MDI X and Port 8 MDI at the same time Note Use Category 5 straight through twisted pair cable STP or UTP for all standard connections However if you must cascade between two hubs using similar port types at both ends of the cable use crossover cable Hardware Reference 4 5 HP Hub 8TXE Installation and Reference Guide Rear Panel The rear panel on the hub includes a full range power socket Line 50 60Hz 100 127VAC 1A 200 240VAC 1A Figure 4 3 Rear Panel Power Socket The power socket accepts AC power from 100 127 VAC to 200 240 VAC at
32. nst the checklist given below Package Checklist M HP AdvanceStack 100Base T Hub 8TXE Part No HP J3235A M Power cord one of the following Australia New Zealand 8120 6810 Denmark 8120 6814 Europe 8120 6811 Japan 8120 6798 Switzerland 8120 6815 United States Canada 8120 6812 United Kingdom 8120 6809 M Four rubber foot pads M Installation and Reference Guide J2325 90001 M Warranty booklet Please inform your dealer immediately should there be any wrong missing or damaged parts If possible retain the carton including the original packing materials Use them again to repack the unit in case there is a need to return it for repair Package Contents i Quick Installation The HP J3235A AdvanceStack 100Base T Hub 8TXE contains 8 100Base TX Fast Ethernet ports The smart design built into the front display panel provides a friendly interface that simphfies installation and network troubleshooting If you are already familiar with basic network operations you should be able to install this hub as described below 1 2 Unpack the HP Hub 8TXE Find a location close to the network devices you need to connect and within easy reach of an electrical outlet Mount the hub on a desktop or any other flat surface If you are installing multiple hubs you can stack them on top of each other after attaching the foot pads Connect any devices that use a standard network interface to the RJ 45 MDI X
33. ocal Area Network LAN A group of interconnected computers and support devices MDI Port Medium Dependent Interface MDI is the IEEE standard for the twisted pair interface This RJ 45 port can be used with straight through cable to connect the hub to a network interconnection device such as another hub or a switch Pin out assignments are shown in Appendix B MDI X Port Medium Dependent Interface Crossed This RJ 45 port which crosses the receive and transmit signals internally can be used with straight through cable to connect the hub to any device that has a standard network interface e g workstation server bridge or router Pin out assignments are shown in Appendix B RJ 45 Connector Most common terminator for twisted pair wiring 2 Glossary HP Hub 8TXE Installation and Reference Guide Shielded Twisted Pair STP Twisted pair wire covered with an external aluminum foil or woven copper shield designed to reduce excessive noise pick up or radiation The STP cable refered to in this manual is also sometimes called screened twisted pair ScTP Its impedance is 100Q and has the same pin assignment as UTP This cable should not be confused with the older 150Q cable type designed by IBM Star Topology Physical connections for this hub are limited to a star configuration i e similar to a hub and spoke arrangement This topology also requires that only one path exists between any two nodes and that data trans
34. orted C 1 Power System C 1 Standards Conformance C 1 Stand alone Configuration 3 1 T Troubleshooting 4 5 Configuration A 3 Hub Indicators A 1 Installation A 2 Power and Cooling A 2 Twisted Pair Cable Category 5 2 2 A 2 2 Index V Verifying Connections 2 5 Verifying Port Status 2 4 Verifying System Operation 2 5
35. ports e g a workstation server bridge or router Use 1002 Category 5 STP or 1000 Category 5 UTP cable to connect to the hub and be sure the length of any twisted pair connection does not exceed 100 meters Refer to Chapter 3 for sample configurations To cascade to another hub or switch run straight through twisted pair cable from the 8MDI cascade port on this switch to any MDI X port on the other device or vice versa Refer to Figure 3 2 If necessary you can also cascade between two ports using crossover cable However be sure not to exceed the maximum length between end nodes as described in Chapter 2 Quick Installation iii HP Hub 8TXE Installation and Reference Guide 6 This hub can serve as a stand alone repeater for small networks can be cascaded with compatible devices e g Fast Ethernet hub or switch or can be connected to a network interconnection device e g Fast Ethernet bridge or router 7 Verify network communications by ensuring that e you have made all the necessary connections e you can access any connected resources e the hub s indicators are functioning properly If you encounter any problems in installing the HP Hub 8TXE refer to Chapter 2 for a detailed description of installation procedures Chapter 3 for sample configurations or Appendix A for help in troubleshooting Note Refer to Chapter 2 for a more detailed description of calculating the maximum cable length permitted b
36. produit est marqu de ce symbole reportez vous la documentation du produit afin 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 susceptible de causer des dommages l quipement Ne continuez pas au del d une rubrique WARNING ou CAUTION avant d avoir bien compris les conditions pr sentant un danger et pris les mesures appropri es Cet appareil est un produit de classe I et poss de une borne de mise la terre La source d alimentation principale doit tre munie d une prise de terre de s curit install e aux bornes du c blage d entr e sur le cordon d alimentation ou le cordon de raccordement fourni avec le produit Lorsque cette protection semble avoir t endommag e d brancher le cordon d alimentation jusqu ce que la mise la terre ait t r par e Mise la terre du c ble de r seau local m si votre r seau local s tend sur une zone desservie par plus d un syst me de distribution de puissance assurez vous que les prises de terre de s curit soient convenablement interconnect es m Les c bles de r seaux locaux peuvent occasionnellement tre soumis des surtensions transitoires dangereuses telles que la foudre ou des perturbations dans le r seau d alimentation public Manipulez les composants m talliques du
37. s den Netzkabeln oder dem mit Strom belieferten Netzkabelsatz voraus Sobald Grund zur Annahme besteht da der Schutz beeintr chtigt worden ist das Netzkabel aus der Wandsteckdose herausziehen bis die Erdung wiederhergestellt ist Fir LAN Kabelerdung m Wenn Ihr LAN ein Gebiet umfa t das von mehr als einem Stromverteilungssystem 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 Blitz oder St rungen in dem Starkstromnetz des Elektrizit tswerks 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 D 4 Safety and Regulatory Statements HP Hub 8TXE Installation and Reference Guide Considerazioni sulla sicurezza Simbolo di riferimento alla documentazione Se il prodotto contrassegnato da questo simbolo fare riferimento alla documentazione sul prodotto per ulteriori informazioni su di esso WARNING La dicitura WARNING denota un pericolo che pu causare lesioni o morte CAUTION La dicituraCAUTION denota un pericolo che pu d
38. talling the System HP Hub 8TXE Installation and Reference Guide Making a Connection via the MDI Cascade Port 1 To make a direct connection to another compatible repeater or switch use the 8MDI cascade port When connecting to this port remember not to use port 8MDI X 2 Prepare straight through shielded or unshielded twisted pair cables with RJ 45 plugs at both ends Use 1000 Category 5 cable for all connections Connect one end of the cable to Port 8MDI on this hub and the other end to a standard MDI X port on the other device When inserting an RJ 45 plug be sure the tab on the plug clicks into position to ensure that it is properly seated Notes 1 When connecting to Port 8MDI do not use Port 8MDI X 2 Make sure the length of twisted pair cable does not exceed 100 meters 3 To connect to another hub or switch you may also run straight through twisted pair cabling from an MDI X port on this hub to a cascade port on another device However if you must connect to another hub or switch via similar port types at both ends of the cable use crossover cabling Distance Limit for Fast Ethernet Cabling For 100Base TX network diamter is very important because each packet must propagate through the Ethernet collision domain before the next packet is sent Every 100Base TX hub repeater adds a small propagation delay to the packet which can be equated to a certain number of bit times The propagation delay repeater delay of th
39. ted pair cable hub to hub cable is limited to 5 is 100 meters long 23 meters in this sample B configuration See page 2 3 for the calculations Figure 3 2 Multiple Hub Configuration Using the Cascade Port 3 2 Configuring the Network Chapter 4 Hardware Reference Before connecting any network device to this hub please review Chapter 2 for information on system installation and Chapter 3 for a brief look at common network architectures This chapter describes the hardware features of the HP Hub 8TXE For easier management and control of the hub familiarize yourself with the display indicators and ports Front Panel There are 8 RJ 45 MDI X ports and 1 RJ 45 MDI cascade port on the front panel Moreover the system indicators provide a simple interface for monitoring the hub The front panel includes a power indicator a statistical display for network traffic and port status indicators as shown below 100BASE TX Class Il Repeater O HEWLETT 100Base TX Class D Repeoter PACKARD UNO AE MONA n x x ax 5 DI MDX anol Figure 4 1 Front Panel The indicator panel simplifies monitoring of various network conditions by providing LEDs that indicate the status of each port and the overall condition of the hub It provides all the key information required to manage your network on a daily basis The following pages list the indicators and their functions Hardware Re
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