HP Fiber-Optic Hub Plus User's Guide

HP Fiber-OpticHub PlusInstallation andReference Guide

Features (continued)Compatibility with the IEEE 802.3 Fiber-Optic Inter-Repeater Link (FOIRL) standardand support for both IEEE 802.3 and Ethernet pro

Included PartsHP 28682A Fiber-Optic Hub Plus (28682-60001)Accessories kit (5062-9312), including:– two mounting brackets (5001-5624)– four 10-mm #M4 s

Front of the HubStatus LEDs~Line On (green) is ON if the hub is receiving power.Activity (green) is ON when data is being transmitted. The frequency s

Back of the HubStatus LEDsPower (green) is ON if the hub is receiving power.(This is the same as~Line On on the front.)Act – activity (green) is ON wh

How the Hub WorksThe HP Fiber-Optic Hub Plus is a multiport repeater. Data signals coming into the hub fromany of its ports are automatically regenera

Firmware EnhancementsHewlett-Packard continually tests and improves its products. When firmware enhancementsare made to the HP Fiber-Optic Hub Plus, y

Network Address. The communication between the hub and the network management stationrequires that the hub be assigned a network address. If you are u

2InstallationThis chapter describes how to install and configure the HP Fiber-Optic Hub Plus, and verifythat it is operating correctly.Installation Su

1. Make sure the hub’s power cord is correct for your country’s ac power supply. Do notplug the power cord into the power supply until the hub is moun

For Rack or Cabinet Mounting:1. Using a Phillips or cross-head screwdriver, attach the mounting brackets to the hub with10-mm M4 screws (included in a

Copyright Hewlett-Packard Company 1992. All rights reserved.Hewlett-Packard Company makes no warranty of any kind with regard to this material, inclu

For Wall Mounting: Using a Phillips or cross-head screwdriver, attach the mounting bracketsto the hub with 10-mm M4 screws (included in the accessorie

1. Plug the power cord into the hub’s power socket and into an ac power source. Note thatthe hub does not have a power switch; the hub is powered on w

You can connect the hub to another HP hub or bridge in three ways shown below. You candirectly connect a computer in the first way shown. Note that fi

Port ConnectionsFiber-Optic PortTo connect the duplex fiber-optic cable to the hub, attach one of the two fibers between thehub’s “transmit” port (lab

To attach an ST-type connector:1. Remove the plastic dust covers, if present, from the cable’s connector and the hub’sreceptacle.2. Align the small ke

ThinLAN Port1. Attach a thin LAN cable section to one side of a BNC “T” connector.2. Attach another thin LAN cable section or a 50-ohm terminator to t

AUI PortCaution Do not touch the hub connector pins or the cable connector pins. Staticdischarge may damage the equipment.1. Disable the SQE Test (sig

No changes to the hub’s default configuration are required for the hub to operate correctly.The HP Fiber-Optic Hub Plus has a console interface for cu

Connecting a Modem and Terminal1. Use a full-duplex, asynchronous (character-mode) modem only. The followingmodems have been tested at their rated spe

If You Have Trouble with a Terminal or Modem ConnectionIf you have connected a terminal or modem according to the previous instructions, and you donot

HP 28682AHP Fiber-Optic Hub PlusInstallation and Reference GuideHP Part Number: 28682-90001Printed in U.S.A.March 1992Edition 2E0392

Configuration CommandsSeveral of the console commands allow you to customize the operation of your hub. They arelisted and described here.Command Name

3OperationThe HP Fiber-Optic Hub Plus is designed to operate unattended. A console interface isprovided if you wish to customize the hub’s configurati

Console CommandsEnter the first two letters of a command to execute it, such as HE for the Help command. TheHelp command displays a screen like the fo

BAckupTo configure one of the hub’s ports for dedicated use in a backup (redundant) link toanother hub.The HP Fiber-optic Hub Plus allows you to use t

COuntersTo display counters for each port, the global count for all ports, and the time elapsed sincethey were last reset with the Reset command.Total

IPconfigTo set IP configuration parameters on the hub. Use this command if you wish the hub to beaccessible using IP (the Internet Protocol). If eithe

IP Address The IP address of the hub, written in the format X.X.X.X.Each number between the decimal points is a decimal numberbetween 0 and 255. Every

LOopbackTo run a loopback test on one or more hub ports:1. Before entering this command, attach a loopback connector to each port that you wantto test

PIngTo run a test of the path between the hub and another device that responds to IP packets.The hub sends Internet Control Message Protocol (ICMP) Ec

SPeed <new speed>To change the console port baud rate. Normally, the baud rate is automatically sensed. Usethis command to set the baud rate exp

In This GuideThis guide contains information to help you install, configure, and troubleshoot yourHP 28682A Fiber-Optic Hub Plus. The guide is organiz

Note The destination device must be able to send an IEEE 802.2 Test response packetupon receipt of an IEEE 802.2 Test command packet.You will be promp

4TroubleshootingSome of the hub console commands are used for the troubleshooting instructions in thischapter. See “Console Connection” in chapter 2 f

Basic Troubleshooting Tips (continued)Make sure that fiber-optic cables are of the correct type: 62.5/125 µm or 50/125 µm.If the ThinLAN port is being

Diagnosing With the LEDsLED patterns indicating problemsDiagnostic TipsPower Col FaultPort^OFF ***Check power cord and power source. If OK,replace the

Diagnostic TestsTesting the Hub OnlyUse one of the following tests of the hub’s internal circuitry. The first is the most completeinternal test. (None

To verify one or more of the fiber-optic ports, AUI port, or ThinLAN port:1. Attach a loopback connector to each port being tested. For a fiber-optic

Testing the LinkUse one of the following tests between the hub and an addressable device on the network:Use the console’s Testlink command to run a li

ACables and ConnectorsThis appendix lists cables that have been tested and verified for use with the HP Fiber-OpticHub Plus. The minimum pin-outs are

HP CablesCable Function Cable TypePort Type onTerminal, PC,or ModemHP Product NumberConnecting to the network:Connecting thehub’s fiber-opticports to

Other Standard CablesCable FunctionPort Type onTerminal, PC,or ModemStandard Cable orCable SolutionConnecting to the console port:Connect a terminalor

Contents1 Introducing the HP Fiber-Optic Hub PlusFeatures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1Included

Fiber-Optic Cable RequirementsBasic fiber-optic cable specifications are provided here. For more information see the HPEtherTwist Technical Reference

AUI CableMinimum Pin-OutTransceiver end15-pin femaleHub end15-pin maleSignal234569101213234569101213Control In circuit AData Out circuit AData In circ

Console Connector and Cable Pin-OutsThe HP Fiber-Optic Hub Plus has a console port that automatically detects whether a terminalor a modem is connecte

RS-232-C “Crossover” Cable(for Terminal/PC with 25-Pin Connector)Minimum Pin-OutTerminal/PC end25-pin maleHub end25-pin maleTx22TxRx33RxGND77 GND5 CTS

RS-232-C Cable for HP 110Minimum Pin-OutHP110 end9-pin maleHub end25-pin maleTx22TxRx33RxGND77 GND5 CTS6 DSR8 DCD22 RI23 DRSNull-Modem Adapter(use wit

RS-232-C Modem CableMinimum Pin-OutModem end25-pin maleHub end25-pin male Signal22Tx33Rx4 4 RTS5 5 CTS6 6 DSR7 7 GND8 8 CD OR DCD20 20 DTR22 22 RI23 2

Loopback ConnectorsThe four loopback connectors shown below are useful for troubleshooting your HP Fiber-OpticHub Plus. The connectors for the AUI, Th

BSpecificationsPhysicalDimensions: 42.5 cm by 23.5 cm by 4.4 cm(16.8 in by 9.3 in by 1.7 in)Weight: 2.7 kg (6.0 lb)Electrical(The HP Fiber-Optic

Optical62.5/125 µm fiber 50/125 µm fiberTransmitter power: –12 dBm nominal;–17 dBm minimum–16.5 dBm nominal;–21 dBm minimumReceiver sensitivity:–30 dB

CModem ConfigurationHP 35031A Support Link IIAt the hub end:Configure SOFT OPTION 6 to 1.Configure SOFT OPTION 15 to 2.Configure SOFT OPTION 16 to 2.C

3 OperationStarting the Console Session . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1Console Commands . . . . . . . . . . . . . . . .

Black Box V.32 9600 Async.At the hub end: Load the factory option set #1. Then make these changes:–––Data Rate Menu: change to 9600 uncodedModem Param

DNetwork AddressingThe HP Fiber-Optic Hub Plus can be managed over the network by HP network managementproducts, and any other network management prod

IPX Addressing Notes:Because the IPX address is assigned automatically, no IPX configuration is necessary;no IPX configuration is provided on the hub

Building Your Own IP Addressing SchemeIf your network is isolated and will not be connected to any other networks that use IPaddressing, you can build

The IP address format is X.X.X.X, where each X is an integer between 1 and 255. The integersare separated by decimal points. For a given network with

EBackup LinksDescriptionIn some network configurations a critical link exists, for example between two workgroups thatregularly share or exchange data

LimitationsEach hub can monitor a single backup link (only one backup link can be configured oneach hub). But, the hub may be at the remote end of one

Configuring A Backup LinkConfigure the Monitoring Hub Only. All configuration of the backup link is performed fromthe console on the hub that is respo

Note On the remote hub, make sure that the ports connected to both the primary andbackup links are enabled (PO n ON). On the monitoring hub, the statu

Reactivating the Primary LinkWhen the primary link is repaired, you can use any of the following methods to reenable theprimary port:From the hub’s co

Console Connector and Cable Pin-Outs . . . . . . . . . . . . . . . . . . . . . . . A-6Pin-Out for Hub’s Console Port Connector . . . . . . . . . . . .

Sample TopologiesFollowing are two simple sample topologies that may give you some ideas on how a backuplink could be used in your network.Sample 1: F

Sample 2: Redundant Fiber-Optic Links Using a SingleFiber-Optic HubIn this topology, redundant fiber-optic links are provided between a single HP Fibe

Safety InformationSafety SymbolsDocumentation reference symbol. If the product is marked with this symbol, refer to theproduct documentation to get mo

Informations concernant la sécuritéSymboles de sécuritéSymbole de référence à la documentation. Si le produit est marqué de ce symbole,reportez-vous à

Hinweise zur SicherheitSicherheitssymboleSymbol für Dokumentationsverweis. Wenn das Produkt mit diesem Symbol markiert ist,schlagen Sie bitte in der P

Considerazioni sulla sicurezzaSimboli di sicurezzaSimbolo di riferimento alla documentazione. Se il prodotto è contrassegnato da questosimbolo, fare r

Consideraciones sobre seguridadSímbolos de seguridadSímbolo de referencia a la documentación. Si el producto va marcado con estesímbolo, consultar la

Safety Information6 Safety Information

Regulatory StatementsFCC Statement (For U.S.A. Only)Federal Communications Commission Radio Frequency Interference StatementWarning:This equipment gen

Regulatory Statements . . . . . . . . . . . . . . . . . . . . . . . . Regulatory Statements-1One-Year Limited Hardware Warranty . . . . . . . . . . .

Declaration ofConformityThe following Declaration of Conformity complies withISO/IEC Guide 22 and EN 45014. It identifies the product,the manufacturer

One-Year Limited Hardware WarrantyHewlett-Packard warrants this computer hardware product against defects in materials andworkmanship for a period of

HP has conducted limited testing with certain non-HP products to determine compatibility withthe HP 28682A Fiber-Optic Hub Plus. Please contact your H

Regulatory InformationThe product described in this document complies with specific international regulations. See the document section entitled“Regul

Printed in U.S.A28682-90001 E0392

1Introducing the HP Fiber-Optic Hub PlusThe HP 28682A Fiber-Optic Hub Plus is a 10-Mbit/s multiport repeaters and is designed to becompatible with the