HP 10-Base-T Installation Manual
Contents
1. C 7 Safety Information Japanese C 8 Regulatory Statements C 9 Index Installing the Hub This chapter describes how to install the hub Topics in this chapter include verifying included parts installing the transceiver module verifying the hub operates correctly mounting the hub connecting the hub to your network connecting hubs together 1 1 qny eu Burpjjejsu Installing the Hub Installing the Hub Installing Your Hub 1 2 Installing Your Hub To install and configure your hub you must complete six basic tasks They are 1 locating and verifying the necessary parts installing a transceiver module connecting the hub to a power source mounting the hub connecting the hub to your network Verify included parts Each HP ProCurve 10Base T Hub has the following components shipped with it 2 This manual The HP J3301A and HP J3303A both come with the HP ProCurve 10Base T Hubs Management and Configuration guide 5967 6862 A power cord one of the following Australia New Zealand 8120 6803 Denmark 8120 6806 Europe 8120 6802 Israel 8120 6799 South Africa 8120 6807 Switzerland 8120 6807 United Kingdom 8120 6801 U S Canada Mexico 8120 6805 accessory kit 5183 7210 e bumper feet 4 e bracket to rack screws 12 24 7 16 4 e bracket to hub screws MA 5 16 4 e mountin2. 2 1 Diagnosing with the LEDs 2 2 Interpreting LED Status 2 3 Interpreting Hub Status LEDS 2 3 Interpreting Port Status LEDS 2 4 LED Operations cec nase an ae ete 2 5 Hub Maintenance Tasks 2 6 Testing the Hub Only 2 6 Clearing a Password for the ASCII Console 2 6 Running Connectivity Tests 2 7 Obtaining Firmware Enhancements 2 8 A Specifications B Cables and Connectors Straight ThrouglWwisted Paitabl olub to ComputeNetworkonnection B 1 Twisted Pair Straight Through Cable B 3 Twisted Pair Crossover Cable B 3 RS 232 Connector and Cable Pin Outs B 3 Minimum Cable Pinout for ASCII Console Connection B 4 C Safety and Regulatory Statements Mounting Precautions C 1 Power Precautions C 2 Safety Information C 3 Informations concernant la s curit C 4 Hinweise zur Sicherheit C 5 Considerazioni sulla sicurezza C 6 Consideraciones sobre seguridad
3. Rear View Power Receptacle 110 220 VAC Figure 1 The HP ProCurve 10Base T Hub 24M J3303A Front and Rear Views iii HP ProCurve 10Base T Hubs iv The following illustrations show each of the four hubs in the HP ProCurve 10Base T Hubs family Figure 2 The HP ProCurve 10Base T Hub 12 J3300A Figure 3 The HP ProCurve 10Base T Hub 12M J3301A TT o I qt Jg LL Figure 4 The HP ProCurve 10Base T Hub 24 J3302A pg i cons III TI TITI rote Be hub 240 Sites A DEN D E a a 1 gt e x e i ee LII LII Figure 5 The HP ProCurve 10Base T Hub 24M J3303A Features HP ProCurve 10Base T Hubs The following tables detail information about features on the HP ProCurve 10Base T Hubs Feature Description The following table provides descriptive information about features on the HP ProCurve 10Base T Hubs Table 1 HP ProCurve 10Base T Hub Feature Descriptions Feature Type Feature Description Network Connections 12 or 24 twisted pair ports to connect to end nodes or other devices An MDI MDI X Media Dependent Interface switch for Port 1 which allows you to connect either an end node MDI X position orto cascade a hub MDI position to the port using a straight through twisted pair cable in both cases Port 1 has a factory default of MDI X but can be toggled to an MDI state with the adjacent push button All other ports are alwa
4. RS 232 download ES SS ES ES Ss HP ProCurve 10Base T Hubs viii Factory Default Settings The following table details the factory defaults for all of your hub settings Table 3 Factory Default Settings on HP ProCurve 10Base T Hubs Feature J3300A J33022A J3301A J3303A Port Status Enabled Enabled MDI MDI X Port Status MDI X Button not MDI X Button not depressed depressed Power when power cord is connected On On Port Counters All 0 Link Beat detection Enabled Enabled Contents 1 Installing the Hub Installing Your Hub 1 2 1 Verify included parts 1 2 2 Install the transceiver module 1 2 3 Verify the hub operates correctly 1 3 4 Mount the hub 20 2 00 ck eke he ce ee be geben ee en 1 5 Rack or Cabinet Mounting 1 5 Wall Mounting csc etd ne 1 7 Table Mounting 1 7 5 Connect the hub to your network 1 8 Connecting Hubs Together 1 9 Twisted Pair Cascade Connections 1 9 ThinLAN Connections 1 11 Connectingthe HP ProCurve 10Base T HubstoaFiber Optic Backbone 1 12 2 Troubleshooting Troubleshooting Approaches
5. HP Networking HEWLETT PACKARD HP ProCurve 10Base T Hubs Installation Guide HP 10Base T Hub 12 HP 10Base T Hub 12M HP 10Base T Hub 24 HP 10Base T Hub 24M For world wide support on all HP Network Connectivity Products visit our web site at http www hp com go procurve Less Work More Network HP ProCurve 10Base T Hubs Installation Guide O Copyright 1998 Hewlett Packard Company All 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 5967 6861 June 1998 Applicable Product HP ProCurve 10Base T Hub 12 J3300A HP ProCurve 10Base T Hub 12M J3301A HP ProCurve 10Base T Hub 24 J3302A HP ProCurve 10Base T Hub 24M J3303A Trademark Credits MS DOS and Microsoft are U S registered trademarks of Microsoft Corporation Ethernet is a registered trademark of Xerox Corporation Disclaimer The information contained in this document is subject to change without notice HEWLETT PACKARD COMPANY MAKES NO WARRANTY OF ANY KIND WITH REGARD TO THIS MATERIAL INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE Hewlett Packard shall not be liable for errors contained herein or for incidental or consequential damages in connection with the furnishing performanc
6. Power Precautions Follow these precautions when unplugging and plugging in power to the hub as well as adding or removing transceiver modules 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 C 2 SUE Moje n6ay pue Majes Safety and Regulatory Statements Safety Information Safety Information Documentation reference symbol Ifthe productis marked with this symbol refertothe product documentation to get more 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 These are safety class Iproducts 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 groundi
7. nach um mehr Informationen ber 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 ber das Produkt zu erhalten CAUTION Symbol f r Dokumentationsverweis Wenn das Produkt mit diesem Symbol markiert ist schlagen Sie bitte in der Produktdokumentation nach um mehr Informationen ber das Produkt zu erhalten 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 I und verf gt ber einen sch tzenden Erdung sterminal Der Betrieb des Ger ts erfordert eine ununterbrochene Sicherheitserdung von der Hauptstromquelle zu den Ger teingabeterminals den Netzkabeln oder dem mit Strom belieferten Netzkabelsatz voraus Sobald Grund zur Annahme besteht da der Schutz beeintr chtigt worden ist das Netzkabel aus der Wandsteckdose herausz iehen bis die Erdung wiederhergestellt ist F r LAN Kabelerdung m Wenn Ihr LAN ein Gebiet umfa t das von mehr als einem Stromverteilungs system beliefert wird m ssen Sie sich vergewissern da die Sicherheitserdungen fest untereinander verbunden sind m LAN Kabel k nnen gelegentlich gef hrlichen bergangsspannungen aus gesetzt werden beispielsweise durch Blitz oder St rungen in dem Starkstromnetz des Elektrizit
8. LED Fault ON i OFF Check cabling on the indicated port all the way out to the device attached to that port Faulty wiring or a bad connection could exist somewhere in that connection The end node or hub attached to the port is off The port may be disabled Use the ASCII console or management application to enable the port If Port 1 check the position of the MDI MDI X switch See the figure in chapter 1 that details the MDI MDI X switch ON ON Very frequent collisions are occurring which could indicate a network fault or improperly terminated cable ON Slow Slow The port has been auto partitioned because of Flash Flash an excessive collision condition Check cable connections and status of attached network devices for causes ofthe excess collisions The hub will automatically recover after certain IEEE 802 3 criteria are successfully met ON Li Fast hi Network management security violation Flash occurred See Port Security in Browser Interface or ASCII Console Interface ON y ON The hub has failed its self test Power cycle the hub If this condition persists call your HP authorized LAN dealer or HP representative for assistance This LED is not important for the diagnosis Bunoousa qno4 Troubleshooting Troubleshooting 2 6 Hub Maintenance Tasks There are several hub maintenance tasks you can perform They include m testing the hub only m clearing a pas
9. MDI port the hub to device connection must always have MDI at one end usually a trans ceiver and MDI X at the other end usually a hub or switch when connecting the two with a straight through cable In the MDI X position use Port 1 to connect your hub to a PC or similar device using straight through cable In this position the port is wired the same as all other twisted pair ports on the hub Cable lengths for these connections can be up to 100 meters MDI MDI X Switch o gt Gi i o zo O i Figure 1 5 The MDI MDI X Switch 1 9 qny 94 Burpjjeysu Installing the Hub Installing the Hub Installing Your Hub In the following illustration the top hub in the stack is connected to two end nodes and to a second hub Note the second hub shows Port 1 connecting to a PC using a straight through twisted pair cable with the port in the MDI X position Hub attached to Port 1 switch in MDI position and straight through cable used Straight Through Cable from Hub to PC Up to 100 meters M asa ana AAA MM NN mmm mU 1 10 PC attached to Port 1 switch in MDI X position and straight through cable BL Installing the Hub Installing Your Hub ThinLAN Connections With an HP ThinLAN Transceiver Module for 10Base2 networks installed in the transceiver slot you can connect your hub o
10. Moje n6ay pue Majes Safety and Regulatory Statements Safety and Regulatory Statements Safety Information Japanese C 8 Safety Information Japanese RAMDER RAS van VBS Amico OMSROWTWSGRUV aST I A EBEL HREH CHR RW WARNING aYy vro WARNING SAF BROMA 6 72 2 fli ez Us CAUTION ca7 Vio CAUTION KEENHOHN E 72 25 f Ze zs UL 37s WARNING CAUTION DIRE AU COT Bi Jv SERRANA SAMBA kl HAL 1ELvElIBICEo7e E CU OSPERIOEACC ESO aa FAI OMA CARE BER T EA COED EDAD RUSO AJ Wolf muB ERROR FE ey RECON INHORVKE BEDEC BLIOREHRIHRONKIERENSEND LE ix BAM END ECM A FEMLTRIYT SESW LAN 7 7 MOB Bg LC e y L HED LAN 23188 O BUE LA AI ED ENST CWS MME D ALIVIAR Civ bOTAT AO RARA MES IZ HAL Hi BENTOS IZ LEMBUT e LAN 7 7 MIE E UCHR EE PATHS MERON COME CEDENZILRDHIET BALI ORRO IWIEFATRER SILO TS TERY AR DCR DBPL E RAE Y ETA PACA ME AFRE DIE E Ame ST Te BPR ITB E Zo 4 72 8 vs ARICA gt FE D ER Vil REBELLE el EMA LRI ET 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 harmful interference when the equipment is operated in a commercial environment This equipment gene
11. 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 surle 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 W sivotre 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 perturba tions dans le r seau d alimentation public Manipulez les composants m talliques du r seau avec pr cautions Aucune pi ce contenue l int rieur de ce produit ne peut tre r par e par l utilisateur Tout d pannage r glage entretien ou r paration devra tre confi exclusivement un personnel qualifi Cet appareil ne comporte pas de commutateur principal la mise sous tension est effectu e par branchement du cordon d alimentation Safety and Regulatory Statements Hinweise zur Sicherheit Hinweise zur Sicherheit Symbol f r Dokumentationsverweis Wenn das Produkt mit diesem Symbol markiert ist schlagen Sie bitte in der Produktdokumentation
12. other SNMP management tool as described in the online help in the management application 2 1 Bunoouso qno4 Troubleshooting Troubleshooting Diagnosing with the LEDs Use the following table to diagnose the problem with your HP ProCurve 10Base T Hub Problem How do reset the hub Solution You can reset the hub three five different ways e From the device remove the plug on the power cord from the power source or the hub and reconnect it e From the device press the Reset Button Fromthe ASCII Console Interface select either the Reboot Hub option to preserve your settings or selectthe Reset Hub to Factory Default option to completely reset the hub s factory defaults e From the Browser Interface select the Factory Reset Button e From HP Top Tools for Hubs and Switches perform a resetfrom the Reset Parameters dialog box If this condition persists see your LAN dealer None of the LEDs are on Verify that the power cord is plugged into an active power source and to the hub Make sure these connections are snug Try power cycling the hub by unplugging and plugging the hub back in If the Power LED is still not on verify that the AC source works by plugging another device into the outlet Or try plugging the hub into a different outlet or try a different power cord If this condition persists call your HP authorized LAN dealer or HP representative for assistance lost the password Pr
13. over IP using the configured IP address The agent code also provides HP EASE Embedded Advanced Sampling Environment which samples network data for enhanced diagnostics from a network management station Also the hubs supportthe RMON MIB The HP J3301A and HP J3303A both can be managed in any of these three ways using aSimple Network Management Protocol application that runs in Microsoft Windows and Unix HP ASA using a World Wide Web browser application that runs in Netscape Navigator or Microsoft Internet Explorer the Browser Interface using an ASCII Console Interface Reliable Operation A self test for fault identification when the hub is powered on or when it is reset The hub can be reset from a network management station or by pressing the Reset button Other Features Password setting capability on both the HP J3301A and HP J3303A enabling you to add and remove passwords as needed for selective entry into the hub management environment Passwords can be setfrom a World Wide Web browser a network management station through an ASCII Console session If you forgetyour password and are locked out of the hub s management environment you can remove the password by pressing the Clear button An RS 232 serial port on both the HP J3301A and HP J3303A that provides out of band management access including An ASCII console to configure monitor and troubleshoot the hub Variable
14. port to connect a PC to be used as the console To make this connection you must use a null modem cable or you can use the minimum cable pin out described below HP 10Base T Hubs Installation Guide B 3 S10 93UU0 pue Sage This appendix lists cables that have been tested and verified for use with the HP ProCurve 10Base T 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 neces sarily match the pin out for the corresponding HP cable but cables manufac tured to follow the minimum pin out will function correctly Minimum Cable Pinout for ASCII Console Connection PC end Hub end 9 pin male 9 pin male 2 en 2 Rx 3 3 Tx 5 5 GND HP 10Base T Hubs Installation Guide B 4 Si0 2auu0 pue Sage Safety and Regulatory Statements This chapter covers the following topics mounting precautions power precautions safety statements 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 becoming unstable and or falling over The hub should be mounted in a position toward the bottom of the rack for stability and to make it easier to stack the other hubs on top Before mounting a hub plan its location and orientation relative to ot
15. 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 C 5 sjuauigjejs Moje n6ay pue Majes Safety and Regulatory Statements Considerazioni sulla sicurezza 2 ES 350 ce 22 ce gt Y emm N C 6 Considerazioni sulla sicurezza Simbolo di riferimento alla documentazione Se il prodotto amp 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 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 prodot
16. wall 1 3 Power LED 1 4 2 3 2 5 power on 1 4 procedures network connections to the hub 1 8 R rack mounting 1 5 instructions for 1 5 resetting the hub troubleshooting procedure 2 6 RJ 45 jack 1 8 2 Index S Security LED 1 4 Self Test 2 5 Self test LED pattern during 1 4 specifications A 1 connectors A 2 electrical A 1 electromagnetic A 2 environmental A 1 physical A 1 status LEDs description 2 3 T table mounting 1 6 terminator for a thin LAN segment 1 12 ThinLAN port and 50 ohm terminator 1 12 troubleshooting approaches 2 1 diagnosing with the LEDs 2 2 LED patterns showing errors 2 5 testing the hub 2 6 twisted pair cable hub to computer connection B 1 pin assignments B 3 twisted pair ports LED description 2 4 V verifying hub operation 1 8 U HEWLETT PACKARD Technical information in this document is subject to change without notice OCopyright Hewlett Packard Company 1997 1998 All rights reserved Reproduction adaptation or translation without prior written permission is prohibited except as allowed under the copyright laws Printed in Singapore 6 98 Manual Part Number 5967 6861
17. baud rates on the hub s out of band management RS 232 port and automatic sensing ofthe selected baud rate when connecting to a terminal device Full V 22bis modem line control for remote out of band management access to the hub Updatable firmware that enables enhancements to be downloaded either from a computer attached to the out of band management port via Xmodem or over the network via TFTP Feature Comparison HP ProCurve 10Base T Hubs The following table details what features are present on the managed and the unmanaged hubs Table 2 Feature Comparison Between Managed and Unmanaged Hubs Feature HP J3300A HP J3302A Unmanaged HP J3301A HP J3303A Managed IEEE 802 3 10Base T ports v Transceiver Slot MDI MDI X Selection Button Rack Mounting Capability Wall Mounting Capability ES World Wide Web management interface SS ES HP EASE SNMP RMON 9 Groups ASCII Console Management Telnet Console Management Modem Support Out of Band Management for remote console connection SERE Eavesdrop Prevention Intruder Prevention Backup Links IP Configuration Community Name Management Alarms MIB Il MAU Connectivity Link Test Ping Test ThinLAN support Fiber Optic support Console Password Protection Mounting Brackets for Rack Transceiver Module Support
18. be tested by running an end to end communica tions test a test that sends known data from one network device to another through the hub such that you can verify that the data was correctly trans mitted between the devices Through both the ASCII Console Interface and the Browser Interface you can run the following hub to node connectivity tests Link Test A test of the link layer MAC Address connection between a local device and a designated remote device Ping Test A test of the network layer IP Address path between the managed device and another device on an IP network that responds to IP packets PC sending test packets PC responding to the test packets gt pi a Figure 2 2 Running a Connectivity Test See your LAN adapter s manual for information on running an end to end communication test Bunoousa qno4 Troubleshooting Troubleshooting 2 8 Obtaining Firmware Enhancements In the future Hewlett Packard may provide improvements to the HP ProCurve 10Base T Hub 12M and the HP ProCurve 10Base T Hub 24M through firmware upgrades The upgrade code can be downloaded from a PC attached to the hub s RS 232 port or over the network The update procedures are described in documents that come with the firmware enhancements Also some down loading instructions are covered in chapter 6 of the HP ProCurve 10Base T Hubs Management and Configuration guide You can determine the current firmware versi
19. ctromagnetic Emissions Immunity Safety FCC part 15 Class A EN 55022 Class A EN 55022 Class B CISPR 22 Class A VCCI Level I Complies with Canadian EMC Class A requirements Complies with Australia New Zealand EMC Class A requirements Seethe Declaration of Conformity for details atthe end of Appendix C Safety and Regulatory Statements in this guide IEC950 1991 A1 A2 EN60950 I 1992 A1 A2 CSA950 NOM 019 SCFI 1993 UL1950 Cables and Connectors This appendix lists cables that have been tested and verified for use with the HP ProCurve 10Base T Hubs The following topics are covered m overview m twisted pair cable connector pinouts m RS 232 connector and cable pinouts It also includes minimum pin out information so if you wish to use an unlisted cable you can verify that the cables used in your installation are correctly wired Note that each pin out does not necessarily match the pin out for the corresponding HP cable but cables manufactured to follow the minimum pin out will function correctly Straight Through Twisted Pair Cable for Hub to Computer Network Connection To connect PCs or other network devices to the hub use a straight through 10Base T cable The twisted pair wires must be twisted through the entire length of the cable The wiring sequence must conform to AT amp T 258A not USOC See the Twisted Pair Cable Pin Assignments section at the end of this chapter for a lis
20. ds Fault Activity 5 seconds 3 seconds Collision Xevr Stays on if module installed Stays on if module installed Off if no module installed Off if no module installed Power Stays On Stays On Warning Installing the Hub Installing Your Hub Note that once you have connected cables to the hub an AUI transceiver LED or twisted pair Port LED stays on if link beat has been detected at the port from an incoming device and the port is enabled A Port LED turns off if link beat is not detected When the self test completes successfully the LEDs go into their normal operational states If a hub hardware fault exists the hub will not complete self test This will be indicated by an abnormal LED pattern such as all port LEDs staying lit indefinitely Note that the normal operational state could include indefinitely blinking LEDs in the event of a detected intruder For managed HP ProCurve 10Base T Hubs see your HP ProCurve 10Base T Hubs Management and Configuration guide for more information on Intruder Detection and flashing LEDs associated with it If the self test time range elapses and the Fault LED continues to stay on instead of turning off the hub may have an error condition If repeating the self test does not correct the problem and the Fault LED still stays continuously on contact your HP authorized reseller for replacement information After the hub has passed its self test you are ready to mount the hub Unp
21. e 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 and the registration form included with the product 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 dealer HP ProCurve 10Base T Hubs HP ProCurve 10Base T Hubs The HP ProCurve 10Base T Hubs are a family of multiport repeaters With these hubs you can connect computers printers and servers together for file sharing These hubs are compliant with the IEEE 802 3 Type 10Base T standard and support both 802 3 and Ethernet networks The HP ProCurve 10Base T Hubs follow these two standards by providing these features m lighting the hub s port LED when it detects the connected device is powered on and cable is good m retransmitting data that did not successfully arrive at the destination device collision detection A sample hub from the family is shown here to indicate common features Front View AUI Xevr Twisted Pair AUI Xcvr MDI MDI X switch Twisted pair LED port LEDs Slot for port 1 ports Power LED EEE Ka aua roCurw 10Base T i o Des A Console Reset Clear Activity Collision Port Button Button LED LED Fault LED
22. e 1 3 Hub to Rack Assembly Wall Mounting Using a Phillips crosshead No 2 screwdriver attach the mounting brackets to the hub with 8 mm approximately 5 16 M4 screws included in the accessory kit Then attach the hub to a wood surface minimum 1 2 inch plywood or equivalent with No 12 5 8 wood screws with a Phillips Cross head No 2 screwdriver HP recommends that the bottom of the hub should be flush with the wall The brackets should be positioned at the front of the hub The face of the hub should be pointing up Notethatthe wood screws are not included in the accessory kit Wood screws have apointed and for boring into the wood unlike rack screws which are flat on the end Table Mounting To place the hub on a table or other horizontal surface no special tools are necessary Apply the four feet included in the accessory kit onto the bottom ofthe hub Be certain to pick a sturdy table in an uncluttered area You may want to secure the hub s cables to the leg of the table to prevent people from tripping over them 1 7 qng 94 Burpjjejsu Installing the Hub Installing the Hub Installing Your Hub 5 Connect the hub to your network Connect the hub to an AC power source With the hub mounted you are now ready to connect the hub to your network Typical hub connections are hub to device connections Connecting to network devices such as computers and printers hub to hub and hub to switch connections Connec
23. e enhancements 2 8 front of the hub status LEDs 2 3 H HP AdvanceStack SNMP Module LED pattern during self test 2 5 hub at a glance iii connecting to fiber optic backbone 1 12 description iii features v mounting 1 5 reference 2 3 troubleshooting 2 1 hub operation verifying 1 3 hub to hub network connections with the MDI switch 1 9 I IEEE 802 3 Type 10Base T standard iii included parts 1 2 installing the hub mounting procedures 1 5 network connections 1 8 verifying hub operation 1 3 IP packets testing 2 7 L LED pattern 1 4 LEDs AUVXcvr 2 4 Collision 2 4 diagnosing the hub status 2 2 during self test 1 4 patterns showing error conditions 2 5 Power 2 3 twisted pair ports 2 4 verifying hub operation 1 4 Link Test 2 7 Link Test about 2 7 Index 1 list included parts 1 2 M MDI switch using 1 9 MDI X switch using 1 9 mounting the hub 1 5 in a rack or cabinet 1 5 N network connections 1 8 hub to hub connections 1 9 O out of band management RS 232 port pin out B 3 P parts list 1 2 Password clearing 2 6 physical specifications of hubs A 1 Ping Test about 2 7 pin outs minimum cable B 4 Port LED 2 4 Port LEDs 1 5 2 5 port LEDs twisted pair 2 4 power cord plugging into the hub 1 3 plugging into the
24. emale end of included power cord into male receptacle here and male end of power cord to an alternating current power source The hub does not have a power switch it is powered on when the power cord is plugged in qny 94 Burpjjejsu Installing the Hub Installing the Hub Installing Your Hub 2 Check the LEDs on the hub s front panel When the hub is powered on it performs a power on self test See the table below for the LED self test time that occurs during the self test Note the upper number is for the HP J3300A HP J3302A and the lower number is for the HP J3301A HP J3303A Port LEDs 5 seconds 10 seconds Power LED on indefinitely Xcvr LED on indefinitely HEWLETT UJ PACKARD ProCurve 10Base T Hub 24M HP J3303A AE t Console 1 alfa a Ps s fa a fis fio 18 Xevr 10 Mbps Xevr Por OPP Pop 101 1 DEN 224 25 2a AUl Xcvr Slot S o o Reset Clear Fault LED Activity LED 5 seconds 5 seconds Collision LED 10 seconds 3 seconds 5 seconds 3 seconds Figure 1 1 Self Test times for LEDs If the hub passes self test the LEDs behave as described in the following table Ifthe LEDs behave in a different way the hub may failed self test See the LED operation table in chapter 2 Troubleshooting for a complete description of the LED behavior Table 1 1 Self Test times for LEDs LED HP J3300A HP J3302A HP J3301A HP J3303A Port LEDs 5 seconds 10 secon
25. ess the Clear button for 10 seconds See page 2 4 for more details IP configuration errors have been reported Use the ASCII console s IP Configuration function as described in the HP ProCurve 10Base T Hubs Management and Configuration guide want to see if each cable is connected correctly Run Link Test in the ASCII Console Interface See the HP ProCurve 10Base T Hubs Management and Configuration guide A user can t send data to another user Use the Ping or Link Test in the ASCII Console Interface See the HP ProCurve 10Base T Hubs Management and Configuration guide The Fault LED is on Remove the plug onthe power cord from the power source and reconnect it If problem persists the device has an internal failure Contact your HP authorized dealer or reseller Troubleshooting Most problems with the hub can be diagnosed using the LEDs on its front panel The following section describes the normal LED pattern during self test and LED patterns that indicate error conditions on the hub Interpreting LED Status Two types of LEDs exist on the hub They are m Hub Status LEDs These LEDs reflect certain conditions that exist on the hub at large and are not explicitly referring to a given port m Port Status LEDs These LEDs reflect basic conditions for example Link Beat being enabled that exist on a specific port Status information for both are described in the following tables Inte
26. g brackets for 44 55mm 1 75 height hub 5183 1381 Install the transceiver module You may want to install the transceiver module and any external transceiver you may want to attach to it before installing the hub Transceiver modules may require more lengthy protrusions created by the greater widths of the different cables and connectors you may attach to a module for example an Installing the Hub Installing Your Hub external transceiver Because ofthese widths clearance in front of your hub may be a factor in the placement of the device or stack that contains protruding transceiver connectors for example a BNC connectors Inspect your installation site and identify whether enough room will be available for the installed transceiver to be connected Then see the guide that shipped with your external transceiver for installation instructions For HP external transceivers see the HP Recessed Transceivers Installation Guide p n 5962 0066 for specific instructions Your transceiver modules can be one of the following HP J2606A Fiber Optic Transceiver Module m HP J2607A Twisted Pair Transceiver Module m HP J2608A ThinLAN Transceiver Module m HP J2609A AUI Port Module 3 Verify the hub operates correctly Before mounting the hub connect it to a power source and verify that the hub will operate correctly 1 Plug the power cord into the hub s power cord receptacle and into an AC power source Connect f
27. guir despu s de un s mbolo de WARNING o CAUTION hasta no haber entendido las condiciones peligrosas y haber tomado las medidas apropiadas Este aparato se enmarca dentro de la clase I de seguridad y se encuentra protegido por una borna de puesta a tierra Es preciso que exista una puesta a tierra continua desde latoma 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 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 alteraciones en la red de energ a el ctrica Manejar con precauci n los componentes de metal de la LAN que est n al descubierto Este aparato no contiene pieza alguna susceptible de reparaci n por parte del usuario Todas las reparaciones ajustes o servicio de mantenimiento debe realizarlos sola mente el t cnico Este producto no tiene interruptor de potencia se activa cuando se enchufa el cable de alimentaci n C 7 sjuauigjejs
28. hen using unshieleded cables and Class B EMC requirements sjuauigjejs Moje n6ay pue Majes Safety and Regulatory Statements Safety and Regulatory Statements Regulatory Statements ol on Jn mo EM fir Korea ASA erule A 321 OIE 8i amp 89ocz HAI AS OSU HIWI Te ASAE 0 HH H9 AS 20 0548 li MUASPSSS DESAI Hle C al European Community This equipment complies with ISO IEC Guide 22 and EN55022 Class A with unshielded cables and EN55022 NoteWith unshielded cables this is a Class A product In a domestic environment this product may cause radio interfe ence in which case the user may be required to take adequate measures C 10 T T ro Di illo y Hn Ol EN Suu o 4 rot Safety and Regulatory Statements Regulatory Statements DECLARATION OF CONFORMITY according to ISO IEC Guide 22 and EN45014 Manufacturer s Name Hewlett Packard Company Manufacturer s Address 8000 Foothills Blvd Roseville CA 95747 5502 U S A declares that the product Product Name HP 10Base T Hub 12 HP 10Base T Hub 12M HP 10Base T Hub 24 HP 10Base T Hub 24M Model Number HP J3300A HP J3301A HP J3302A HP J3303A Accessories HP J2606A HP J2607A HP J2608A HP J2609A conforms to the following Product Specifications Safety EN60950 1992 A1 A2 IEC 950 1991 A1 A2 EMC EN 55022 1994 CISPR 22 1993 class A EN50082 1 1992 prEN 55024 2 1992 IEC 801 2 1991 4kV CD 8kV AD p
29. her devices and equipment Also consider the cabling that will be attached to the hub and the ports that will be used Verify that there is room for the grouped cables to trail out from the side ofthe hub Allow at least 2 54 cm 1 inch in the front of the hub In the back of the hub allow at least 3 8 cm 1 1 2 inches of space for the power cord Ensure that the HP ProCurve 10Base T Hub does not overload the power circuits wiring and over current protection To determine the possibility of overloading the supply circuits add togetherthe amperage ratings from the nameplates of all your hubs and other equipment installed on the same circuits and compare the total with the rating limits for the supply circuits Make sure that the power source circuits are properly grounded then use the supplied power cord to connect the HP ProCurve 10Base T Hubs to the circuit See the Safety Statements in this chapter Do not block airflow around the sides and the back of the unit C 1 sjuauigjejs Moje n6ay pue Majes Note Note 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 Do not install the hub in an environment where the operating ambient temper ature might exceed 45 C 113 F
30. lug the hub and proceed to the next step 4 Mount the hub Before mounting the hub unplug it The HP ProCurve 10Base T Hubs can be mounted in three ways 1 inarack or cabinet 2 onthe wall 3 onatable The hardware for mounting the hub is included in the accessory kit 5064 2053 packed with the hub See Appendix C Safety and Regulatory Statements for general mounting precautions Rack or Cabinet Mounting The rack or cabinet should be adequately secured to prevent it from becoming unstable and or falling over Please see Appendix C Safety and Regulatory Statements for precautions and warnings associated with rack mounting 1 5 qny ay Burpjjejsu Installing the Hub Installing the Hub Installing Your Hub 1 Using a Phillips Crosshead No 2 screwdriver attach the mounting brackets to the hub with No M4 5 16 silver screws included in the accessory kit N Figure 1 2 Hub to Bracket Assembly 2 Position the hub in the rack or cabinet and slide it up or down until the rack holes line up with the bracket holes 3 Then attach the bracket to the rack with the No 12 24 7 16 screws and black nylon washers included in the accessory kit with a Phillips Cross head No 2 screwdriver A flatblade screwdriver will also work in assem bling the hub to therack Make sure you have screws that fit your cabinet or rack before mounting the hub 1 6 Installing the Hub Installing Your Hub Figur
31. ng m Ifyour LAN covers an area served by more than one power distribu tion system be sure their safety grounds are securely interconnected m LAN cables may occasionally be subject to hazardous transient volt ages such as lightning or disturbances in the electrical utilities power grid Handle exposed metal components ofthe 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 sjuauigjejs Moje n6ay pue Majes Safety and Regulatory Statements Informations concernant la s curit Safety and Regulatory Statements C 4 Informations concernant la s curit Symbole de r f rence la documentation Si le produit est marqu de ce symbole reportez vous ala documentation du produit afin d obtenir des informations plus d taill es WARNING Dans la documentation un WARNING indique un danger susceptible d entrainer des dommages corporels ou la mort CAUTION Untexte de mise en garde intitul CAUTION indique un danger suscep tible de causer des dommages l quipement Necontinuez 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
32. on on the hub from the ASCII console Look forthe SNMP Agent EEPROM version number to determine the revision When you access the console the version number appears Itis also on the General System Information Screen under the Status and Counters Menu and the Identity Window in the Browser Interface To obtain the latest agent firmware use the download instructions on the quick reference card included at the beginning of this manual Contact your HP authorized LAN dealer or local HP sales office for the latest on firmware enhancements Specifications Physical Width 42 5 cm 16 7 in Depth 23 8 cm 9 4 in Height 4 36 cm 1 7 in Weight 8 lbs 13 oz 8 8 Ibs Electrical The hub automatically adjusts to any voltage between 100 127 and 200 240 volts and either 50 or 60 Hz AC voltage 100 127 volts 200 240 volts Maximum current 5A max 0 3A max Frequency range 50 60 Hz 50 60 Hz The maximum current ratings represent the current that could be drawn with an external transceiver attached to the hub Environmental Operating Non Operating Temperature 0 C to 55 C 32 F to 131 F 40 C to 70 C 40 F to 158 F Relative humidity 10 to 95 at 40 C 104 F 10 to 90 at 65 C 149 F non condensing Maximum altitude 4 6 Km 15 000 ft 4 6 Km 15 000 ft suoneoyisads Specifications Specifications Connectors The RJ 45 twisted pair ports are compatible with the IEEE 802 3 Type 10Base T standard Ele
33. on shows a hub with a Fiber Optic transceiver connected to a fiber optic backbone Fiber optic HP J2606A Fiber Optic cable to a Transceiver Module installed in fiber optic the AUI Xcvr Slot backbone amp amp b4b BARN TTT TETTE Figure 1 8 Fiber Optic Backbone Connection For more information about cabling configuration see the documentation accompanying the optional recessed transceivers Also see the Designing HP ProCurve Networks Part Number 5965 6578E guide for information on valid network topologies Troubleshooting This chapter describes ways to troubleshoot the hub Topics covered are troubleshooting approaches m using a checklist to diagnose the hub m diagnosing with the LEDs m hub maintenance tasks Troubleshooting Approaches You can diagnose problems on all HP ProCurve 10Base T Hubs by checking the LEDs on the front ofthe hub as described in the section Diagnosing with the LEDs in this chapter Note that information in this chapter is also covered in chapter 7 ofthe HP ProCurve 10Base T Hubs Management and Configu ration guide You can diagnose hubs onthe HP J3301A and HP J3303A the managed hubs by m By using the Browser Interface a Web based interface that provides a full management environment m By using the ASCII console s diagnostic functions as described in the AP ProCurve 10Base T Hubs Management and Configuration guide m By using the HP Top Tools and Switches or
34. r a stack of hubs to a 10Base 2 ThinLAN network The following illustration shows a hub with an HP ThinLAN Transceiver li le al rr i pid L JL JL JL LL en i HOF e ye Figure 1 6 ThinLAN Connector You can connect up to 30 hubs together on a common ThinLAN segment The ThinLAN segment can include a computer attached to a hub at one end of the segment that can communicate with a computer attached to another hub at the other end of the segment By using the BNC port on the module the maximum repeater hop count increment through the entire segment is only two The following illustration shows you how to connect three hubs together from one ThinLAN port to another ThinLAN coax connecting hubs together 50 ohm terminator Hub 24M m ve oe CICLI ss AL 50 ohm terminator HP AdvanceStack T Hub 24 Figure 1 7 10Base T Hub Stack Using ThinLAN Coax Connection 1 11 qny 94 Burpjjejsu Installing the Hub Installing the Hub Installing Your Hub Note Each ThinLAN cable segment must be terminated using a 50 ohm terminator at each end In the illustration above a 50 ohm terminator is placed at each end of the cable segment Connecting the HP ProCurve 10Base T Hubs to a Fiber Optic Backbone With a Fiber Optic transceiver for 10Base FL networks you can connect your hub to a fiber optic backbone The following illustrati
35. rEN 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 LEDs in this product s are Class 1 in accordance with EN60825 1 1994 Tested with Hewlett Packard Co products only Roseville October 20 1997 p 94 ren DorcKak Quality Manager European Contact Your local Hewlett Packard Sales and Service Office or Hewlett Packard GmbH Department TRE Herrenberger Strasse 130 D 71034 B blingen FAX 49 7031 14 3 143 C 11 sjuauigjejs Moje n6ay pue Majes Index Numerics 50 ohm terminator for a ThinLAN cable segment 1 12 A Activity LED 1 4 2 3 2 6 AUI Xcvr LED 2 4 C cabinet mounting instructions for 1 5 clearing a password 2 6 Collision LED 1 4 2 4 2 5 connections hub to hub networking 1 9 network 1 8 connector specifications A 2 countries power cords for 1 2 D diagnosing with the LEDs 2 2 diagnostic tests testing the hub only 2 6 E electrical specifications A 1 electromagnetic specifications A 2 environmental specifications A 1 Ethernet networks iii external power supply 1 2 F Fault LED 14 2 3 2 5 features hub v fiber optic backbone 1 12 firmwar
36. rates 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 If this equipment does cause interference to radio or television reception which can be determined by turning the equipment off and on the user is encouraged to try to correct the interference by one or more of the following measures 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 Consult the dealer or an experienced radio TV technician for help VCCI Class 1 For Japan Only when using unshielded cables COR RETTET VCCI DEE GEE 22 AA TBS Cd CORRE RER CA o0 uo MER RE d CDU AT DISSI ARROSTI amp 4 5 BREN EU ET This equipment is in the Class A category information technology equipment based on the rules of Voluntary Control Council For Interference by Informa tion Technology Equipment VCCI When used in a residential area radio interference may be caused In this case user may be required to take appropriate corrective actions Canada This product complies with Class A Canadian EMC requirements w
37. rpreting Hub Status LEDs The hub status LEDs indicate whether the hub is functioning properly LED LED Color Meaning of LED Power Green On indicates the hub is receiving power Off indicates the hub is not receiving power Activity Green Flickering rapid flashing indicates a packetis being transmitted to or from a port Normally the LED appears to flicker In heavy traffic it may appear on all the time Off indicates no packet is being transmitted to or from a port Fault Orange On indicates an error has been detected on the hub Off indicates no error has been detected on the hub Port LED Flash on for 75 seconds and turn off for 75 seconds indicating the port is partitioned The Fault LED does NOT illuminate when ports are partitioned Collision Orange On indicates a collision is detected If it appears on continuously with no flicker it is a possible indicator of a network fault or an improperly terminated cable Off indicates no collision has been detected Bunoousa qno4 Troubleshooting Troubleshooting Interpreting Port Status LEDs The following table provides LED port information for the HP J3301A and the HP J3303A LED Color Meaning of LED Twisted pair Green On indicates Link Beatis detected from the attached node and Ports the port is enabled on the HP J3301A and HP J3303A Off indicates the port is not receiving the link beat signal from the at
38. sword from the ASCII console m running connectivity tests Each of these tasks is described in the following sections Testing the Hub Only If you believe that the hub is not operating correctly you can test it to determine normal operation in two ways m pressing the Reset Button m remove and reinsert the power cord for that hub This procedure will cause the hub to complete its power on self test If any error conditions exist in the hub the LEDs should display the condition Clearing a Password for the ASCI Console On the HP J3301A and HP J3303A you can use the Clear button to clear a forgotten console password that was previously configured on the hub The password is configured from the ASCII console Note that the HP J3300A and HP J3302A hubs do not have a Clear button because they do not have password setting capability because they are unmanageable hubs HEWLETT hj KA euo O db b n b gl 0g ES DS De En ProCurve 10Base T Hub 24M Xevr 10 Mbps Xcvr Por J3303A 7 8 9 10 11 1 2 2 2 23 24 AUI Xevr Slot gt 2 e E o O Reset Clear Fault Console Clear Button Figure 2 1 Clearing a Password To clear the password for the HP J3301A and the HP J3303A follow these steps 1 Verify the hub has powered up passed power on self test and that the Power LED is lit 2 Pressthe Clear button for 10 seconds Troubleshooting Running Comnectivity Tests Both the hub and cabling can
39. tached node Slow Flash indicates the port has been partitioned due to excessive collisions This port will reenable when the connected device or cable is repaired XCVR Green On indicates is enabled a transceiver module is installed Port Off indicates the Xcvr port is disabled Slow Flash indicates the port has been auto partitioned The slowflash is approximately once every 1 5 seconds 75 seconds on and 75 seconds off The following table provides LED port information for the HP J3300A and the HP J3302A LED Color Meaning of LED Twisted pair Green On indicates Link Beat is detected from the attached node Ports Off indicates the port is not receiving the link beat signal from the attached node Slow Flash indicates the port has been partitioned This port has been auto partitioned due to excessive collisions This port will reenable when the connected device or cable is repaired XCVR Green On indicates the a transceiver module is installed Port Off indicates the Xcvr port is disabled Slow Flash indicates the port has been auto partitioned The slowflash is approximately once every 1 5 seconds 75 seconds on and 75 seconds off Troubleshooting LED Operation The tables on the following pages list the hub s LEDs their possible states and diagnostic tips to resolve any error conditions LED patterns indicating problems Diagnostic Tips Power Coll Port
40. ting of the signals used on each pin HP 10Base T Hubs Installation Guide B 1 S10 93UU0 pue Sage 12345678 1 23 6 t4 T m NER ET NECI Es ti Note 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 Note 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 HP 10Base T Hubs Installation Guide B 2 S10 2auu01 pue Sage Twisted Pair Straight Through Cable Hub End MDI X Computer or Transceiver End MDI Signal Pins Pins Signal receive 1 transmit receive 2 2 transmit transmit 3 3 receive transmit 6 6 receive Twisted Pair Crossover Cable Hub End MDI X Computer or Transceiver End MDI Signal Pins Pins Signal receive 1 3 transmit receive 3 1 transmit transmit 2 6 receive transmit 6 2 receive RS 232 Connector and Cable Pin Outs The RS 232 port connector on both the HP J3301A and the HP J3303A is wired as depicted in the following table PIN US CCITT DIN 2 Rx 104 D2 3 Tx 103 DI 4 DTR 108 SI 5 GND 102 6 DSR 107 MI Use the RS 232
41. ting to another Ethernet hub hub to network backbones Connecting to a network backbone This section describes the different ways you can connect your hub to your network To connect a device to the hub using unshielded twisted pair UTP cable push the RJ 45 plug at one end of the cable into the RJ 45 jack on the hub until the tab on the plug clicks into place RJ 45 Connector unshielded twisted pair cable Category 3 4 or 5 gt Cat 3 4 maximum distance 100 meters Cat 5 maximum distance 150 meters Figure 1 4 The RJ 45 Connector Installing the Hub Installing Your Hub Connecting Hubs Together Twisted Pair Cascade Connections To expand your network the hub can be connected to other hubs with straight through cable by using the Media Dependent Interface MDI MDI X switch The MDI MDI X switch controls how the signals are sent through the twisted pair cable connected to Port 1 The hub is shipped with the switch in the MDI X position The switch has two positions In the MDI position use Port 1 to connect your hub to another hub In this position the hub reversesthe Tx and Rx port pairs for you This allows youto use straight through category 3 or 4 cable rather than cross over cable to connect two hubs together The cable length can be up to 100 meters Category 5 cable length can be up to 150 meters Be sure that only one of the two hubs is using an
42. to Ogniqualvolta vi sia probabilit di danneggiamento della protezione disinserite il cavo d alimentazione fino a quando il collegaento a terra non sia stato ripristinato Per la messa a terra dei cavi LAN m sela vostra LAN copre un area servita da 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 alimen tazione 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 esclusi vamente da personale specializzato Questo apparato non possiede un commutatore principale si mette scotto tensione all inserirsi il cavo d alimentazione Safety and Regulatory Statements Consideraciones sobre seguridad Consideraciones sobre seguridad S mbolo de referencia a la documentaci n Si el producto va marcado con este 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 o la muerte CAUTION Una CAUTION en la documentaci n se ala un riesgo que podr a resultar en aver as al equipo No prose
43. ys MDI X for connection to computers and other end nodes through a twisted pair straight through cable An AUI Xcvr slotfor installing one ofthe HP Transceiver modules HP Fiber Optic Transceiver Module HP J2606A for 10Base FL Allows you to connect your hub to a fiber optic backbone HP Twisted Pair Transceiver Module HP J2607A for 10Base T Adds another RJ 45 port for a total of 13 twisted pair ports on the J3300A and the J3301A hubs HP ThinLAN Transceiver Module HP J2608A for 10Base2 HP AUI Port Module HP J2609A to attach external transceivers Easy to Use Design Hub Status LEDs showing power activity collisions fault and Xcvr each providing quick easy to read hub status information and troubleshooting help Port Status LEDs showing transceiver and port status providing quick easy to read port status information and troubleshooting help Metal brackets included with the hub that can be easily attached to the hub for mounting the hub in a standard 19 inch telco rack or onarack Also table and wall mounting is supported Standards Based Compatibility IEEE 802 3 Type 10Base T standard compatibility to support both 802 3 and Ethernet networks HP ProCurve 10Base T Hubs Feature Type Feature Description Advanced embedded SNMP agent code in both the HP J3301A and HP J3303A enabling these hubsto be managed remotely from a network management station using SNMP
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