HP 10BASE-T Guida Utente

HP AdvanceStack 10Base-T HubsInstallation and Reference Guide

3 Hub ReferenceFront and Back Panel Descriptions . . . . . . . . . . . . . . . . . . . 3-2Front of the hub . . . . . . . .

CNetwork AddressingCommunications Between Huband Network Management StationIPX Addressing for Novell NetWareIP Addressing for IP and non-IP NetworksUs

Communication Between the Huband Network Management StationThe HP AdvanceStack 10Base-T Hubs that have an HP Ethernet SNMPModule (HP J2603A or B) inst

IPX Addressing for Novell NetWareThe Novell NetWare network operating system uses a proprietaryprotocol called Internetwork Packet Exchange (IPX). The

IP Addresses for IP and Non-IPNetworksIf you have chosen to manage your hub with an SNMP/IP networkmanager, your hub must be configured with an IP add

The following documents have detailed descriptions on how to buildyour own IP addressing scheme:HP Interconnect Manager Getting Started Guide: (Ope

Using BOOTPBOOTP (Bootstrap Protocol) is used to download networkconfiguration data from a server (the BOOTP server) to the hub. Theconfiguration data

Definitions of the table entry fields:hphub24 is a user-defined symbolic name to help you find the correct section of thebootptab file. If you have mu

DBackup LinksDescriptionConfiguring a Backup LinkIdentifying the Backup LinkIndications of Backup Link ActivationReactivating the Primary LinkExample

DescriptionNote The Backup Link function is available only for HP AdvanceStack10Base-T Hubs in which an HP Ethernet SNMP Module (HP J2603A orB) is ins

4 TroubleshootingTroubleshooting Approaches . . . . . . . . . . . . . . . . . . . . . . 4-2Diagnosing with the LEDs . . . .

LimitationsThe hubs at both ends of the redundant link must have anHP Ethernet SNMP Module installed.Each hub can monitor a single backup link (only o

Configuring a Backup LinkConfigure the Monitoring Hub Only. All configuration of thebackup link is performed from the HP Stack Manager program, and yo

4. Complete the network cable connections between the monitoringhub and the remote hub. (For instructions, see “Port Connections” inchapter 1, “Instal

Indications of Backup LinkActivationWhen the primary link fails (“n” consecutive test packet responses werenot received on the primary port from the o

Reactivating the Primary LinkWhen the primary link is repaired, you can use any of the followingmethods to re-enable the primary port:From HP Stack Ma

Example TopologiesFollowing are two simple example topologies that may give you someideas on how a backup link could be used in your network.Example 1

Example 2: Backup Link Using AlternativeMediumIn this topology, the primary link consists of a twisted-pair cablebetween twisted-pair ports on two HP

Safety and Regulatory Statements

Safety InformationSafety SymbolsDocumentation reference symbol. If the product is marked with this symbol, referto the product documentation to get m

A Cables and ConnectorsRecommended Cables . . . . . . . . . . . . . . . . . . . . . . . . . . A-3Twisted-Pair Cable/Connect

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

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

Considerazioni sulla sicurezzaSimboli di sicurezzaSimbolo di riferimento alla documentazione. Se il prodotto è contrassegnatoda questo simbolo, fare

Consideraciones sobre seguridadSímbolos de seguridadSímbolo de referencia a la documentación. Si el producto va marcadocon este símbolo, consultar la

Safety InformationSafety and RegulatoryStatementsSafety Information 7

Regulatory StatementsFCC Statement (For U.S.A. Only)Federal Communications Commission Radio Frequency InterferenceStatementWarning: This equipment ge

Declaration of ConformityThe following Declaration of Conformity for the HP AdvanceStack 10Base-THubs complies with ISO/IEC Guide 22 and EN 45014. The

Index

Symbols50-pin telco connectors 1-1550-pin/RJ-45 adapter 1-14Aaccessory kits 1-2Activity LED 3-3advanced features of HP Stack Manager

D Backup LinksDescription . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-2Limitations . . . .

console portcables for connecting A-3HP cables A-3customer servicetypes of 4-12DDeclaration of Conformity C-9DECnet 3-15default se

connect/disconnect function 2-6factory reset option 2-12higher serial access speeds 2-9hub identification information 2-7installation

network management features 3-10out-of-band management 3-9MIB support 3-10, B-3modem cable pin-out A-10modem connectionout-of-band man

Rrack or cabinet mounting 1-6recommended cables A-3Redundant Power Supply (RPS)from HP Stack Manager 2-8on the back panel 3-5Redundant

twisted-pair cablehub-to-computer connection A-4hub-to-hub connection A-6hub-to-hub management chain A-5pin assignments A-7pin-outs

© Copyright 1995Hewlett-Packard CompanyPrinted in Singapore 10/95Manual Part Number5964-4601*5964-4601*

1Installing the HP AdvanceStack10Base-T HubsInstallation SummaryInstallation Steps1. Install Add-in Modules (optional)2. Verify the Hub’s Operation3

Installation SummaryThe basic hardware installation procedure for the HP AdvanceStack10Base-T Hubs is as follows:1. Install the Ethernet SNMP Module a

Power cord, one of the following:Australia/New Zealand (8120-6175)Denmark (8120-6178)Europe (8120-6174)Switzerland (8120-6179)Japan (8120-6176)United

2. Verify the Hub’s Operation1. Plug the power cord into the hub’s power cord receptacle andinto an ac power source.Caution If your installation requi

3. Mount the HubThe HP AdvanceStack hubs can be mounted in three ways:in a rack or cabineton a wallon a tableThe hardware for mounting the hub is incl

Mounting the Hub in a Rack or CabinetNote that the rack or cabinet should be adequately secured to prevent itfrom falling over.1. Using a Phillips (cr

©Copyright Hewlett-Packard Company 1995.All Rights Reserved.DisclaimerReproduction, adaptation, or translation withoutprior written permission is proh

ImportantNoteSteps 2 through 4 below apply to mounting a single hub or thefirst of multiple hubs in a rack. The mounting brackets aredesigned to make

3. Place the hub in the rack and lower it so the notches in the bottom of the bracket slide onto the two screws. Tighten these screws—becareful not to

Notice that for the first hub you mounted, you used the bottom notchand the top hole in the bracket. For the next hub above, you use thebottom hole an

Mounting the Hub on a WallImportant A hub should be mounted only to a wall or wood surface that isat least 1/2-inch plywood or its equivalent.1. Using

4. Complete the Network Connections to the HubReconnect the hub to the power source and then make thenetwork connections to the hub. (For the Hub-2

Hub-to-Hub Network ConnectionsThe HP AdvanceStack 10Base-T Hubs can be connected together usingany of the hub’s network ports. It is strongly recommen

Hub-to-Network Backbone ConnectionsA single HP AdvanceStack 10Base-T Hub or a stack of hubs can beconnected to a network backbone. These examples show

Network Port ConnectionsThe HP AdvanceStack 10Base-T Hubs have the following network ports:twisted-pairThinLAN (BNC)AUI/Xcvr SlotThis section describe

Using RJ-45 Connectors: Push the RJ-45 plug into the RJ-45 jackuntil the tab on the plug clicks into place.To disconnect an RJ-45 plug, press the smal

2. Insert the hook into the slot on the hub’s face. 3. Pivot the telco plug onto the 50-pin telco connector and press it intoplace.4. Make sure t

HP AdvanceStack 10Base-T HubsAt A GlanceThe HP AdvanceStack 10Base-T hubs are a family of multiport repeaters.With these hubs, you can connect compute

ThinLAN ConnectionsTo connect a ThinLAN cable to the hub’s ThinLAN port:1. Attach a ThinLAN cable section to one side of a BNC “T” connector.(Hewlett-

AUI/Xcvr SlotOptional transceiver modules can be installed in the hubs’ AUI/Xcvr slotto provide additional connectivity choices, including:HP Fiber-Op

Cable ManagementThe HP AdvanceStack hubs have been designed to help you with theproblem of managing your network cables. On the right side of each hub

5. Connect the Hub to the Distributed Management Console (optional)The HP AdvanceStack hubs can be controlled in two ways:from a PC running the HP St

Using a Direct Serial ConnectionThe out-of-band management port on the hub is a 9-pin serial (RS-232-C)port used to connect the hub to the personal co

3. For a hub with an SNMP module and the RS-232 cable connected to aterminal, switch on the terminal’s power (or switch on the PC’s powerand start the

3. Connect the “local modem” to the serial port on your PC or install itin the PC if it is an internal modem, and configure that modem byusing the “Lo

Using the Distributed Management ChainIt is not necessary for each hub in a chain to be connected to thecomputer that is running HP Stack Manager or a

2Installing and UsingHP Stack ManagerSoftware DescriptionComputer RequirementsInstalling and Starting HP Stack ManagerHP Stack Manager Basic FeaturesH

This chapter describes how to install and use the HP Stack Managersoftware and lists the program’s basic and extended features.The HP AdvanceStack hub

Features Network Connections 12, 24, or 48 twisted-pair ports. The 12-port hub has built-in RJ-45 jacks. The 24-port and 48-port hubs have industry-

Computer RequirementsThe HP Stack Manager software runs on IBM-compatible personalcomputers with the following minimum configuration:Microsoft Window

Installing and StartingHP Stack ManagerTo install the HP Stack Manager software:1. With Windows running, insert the floppy diskette into yourcomputer’

Using WindowsThe HP Stack Manager software uses the standard features of theMicrosoft Windows user interface. If you are unfamiliar with usingWindows,

Port enable/disableResetRedundant Power Supply (RPS) status (for the Hub-24 and Hub-48)There is also an extended set of features available only to hub

Automatic Chain DisplayThe Chain Display window displays a list of HP AdvanceStack hubs thatHP Stack Manager detects in the chain to which you have co

Port Enable/DisableThis function turns the port selected on the Port Status display on or off.Port CountersThe Port Counters function displays summary

HP Stack ManagerAdvanced FeaturesIn addition to the basic features described earlier in this chapter, thefollowing HP Stack Manager advanced features

IP ConfigurationThe IP Configuration window is used to define the parameters necessaryfor the hub to communicate with a network management station usi

Authorized ManagersThe Authorized Managers window is used to specify the IP or IPXnetwork addresses of SNMP management stations authorized to manageth

Network TestsThe Network Tests window enables you to perform Ping, IPX, and Linknetwork tests. These tests are used to verify the connection between t

Features (continued)Modular, Easy-to-Use Design LEDs showing power, activity, collisions, and port status provide quick,easy-to-read hub status inform

3Hub ReferenceFront and Back Panel DescriptionsHow the Hubs WorkManaging Your Hub — HP Distributed ManagementOptional AccessoriesFirmware Enhancements

Front and Back Panel DescriptionsFront PanelThe 24-port hub is shown; the 12-port and 48-port hubs are essentially the same.ThinLANnetworkportchain po

Front of the hubStatus LEDs The Status LEDs indicate whether the hub is functioningproperly or not. For further details on error conditions indicated

Port LEDs (green) There is an LED associated with each networkport on the hub, twisted-pair, the AUI/Xcvr port, and the ThinLAN port.Each port LED ind

Back of the HubExpansion SlotThe Expansion Slot is used to add an HP Ethernet SNMP Module(HP J2603A or B). See the “Optional Accessories” section late

Auto-SegmentationThe Basic FeatureThe hub will automatically segment (temporarily disable) a networkport if a collision condition exists for an excess

Late collisions occur when a node starts transmitting after another nodehas already transmitted at least 512 bits. They are usually caused whennetwork

Managing Your Hub —HP Distributed ManagementOne of the key features of the HP AdvanceStack family of hubs is theease with which a hub can be managed.

Chaining the HubsThe HP AdvanceStack hubs can be easily connected together withstandard unshielded twisted-pair cable through their Extension (In/Out)

MIB (Management Information Base) SupportThe HP AdvanceStack 10Base-T Hub with an installed HP Ethernet SNMPModule supports the following MIB standard

ThinLANnetworkportchain ports RS-232 console port(for distributed management)Optional AUI port moduleinstalled in AUI/Xcvr slottwisted-pair portshu

Port SecurityNote This feature is configurable over the network from a network manage-ment station running HP Interconnect Manager, or out-of-band fro

Password ProtectionThe hub can be assigned a password to restrict access to the hub’sconsole interface and to the hub’s configuration from networkmana

Automatic sensing of the baud rate on the out-of-band managementport, and support for higher port baud rates beyond the default 9600baud.Full V.22bis

HP Transceiver ModulesThe HP Transceiver Modules are optional modules that can be added toan HP AdvanceStack hub. They provide extended connectivity c

HP Router ModuleThe HP J2628A Router 210 Module is an auxiliary module for theHP AdvanceStack 10Base-T Hub. The Router 210 Module attaches to theHP J2

AppleTalk Phase 2Transparent bridging with support for the Spanning Tree ProtocolThe router module can be configured and managed in various ways:Throu

HP Dial-a-LAN Remote AccessServerThe two HP AdvanceStack Dial-A-LAN auxiliary modules are remoteaccess servers for Ethernet networks. These products s

HP J2624A Dial-A-LAN 4AIf you need more than two ports, the HP Dial-A-LAN 4A has four RS-232ports for connecting up to four external modems. This modu

Firmware EnhancementsHewlett-Packard continually tests and improves its products. Whenfirmware enhancements are made to the HP AdvanceStack hubs thath

HP Customer Support ServicesHow to get the latest software/agent firmwareYou can download any of the following:HP AdvanceStack SNMP firmware: asfw.

4TroubleshootingTroubleshooting ApproachesDiagnosing with the LEDsInstallation ProblemsCabling ProblemsUnusual Network ActivityIP Configuration Errors

This chapter describes how to diagnose and resolve operating problemswith the HP AdvanceStack 10Base-T Hubs.This chapter describes these topics:basic

Diagnosing with the LEDsMost problems with the hub can be diagnosed using the LEDs on itsfront panel. This section describes the normal LED pattern wh

LED Error IndicationsThe tables on the next two pages describe LED patterns that indicateerror conditions.LED patterns indicating problems Diagnostic

LED patterns indicating problems Diagnostic TipsPower Collision Fault Security RPS ExpSlotPortON * SlowFlashOFF * * SlowFlashThe port has been auto-se

Installation ProblemsBy carefully following the installation procedures described in chapter1, “Installing the HP AdvanceStack 10Base-T Hubs”, you can

Cabling ProblemsA high percentage of network problems are due to faulty cabling.Cabling problems usually result in the failure of a hub to connect to

TopologyIt is important to make sure you have a valid network topology.Common topology faults include excessive cable length and excessiverepeater del

Diagnostic TestsThe HP Stack Manager software provides tests and indicators that canbe used to monitor the hub and its network connections. See chapte

Select Ping Test from HP Stack Manager’s Network Test function ortype the PIng command at the ASCII terminal. This is a networklayer test that you can

Contents1 Installing the HP AdvanceStack 10Base-T HubsInstallation Summary . . . . . . . . . . . . . . . . . . . . . . . . .

Clearing a PasswordThere is a Password Clear button on the HP Ethernet SNMP Module thatis accessed through a hole in the hub’s Expansion Slot cover pl

Customer Support ServicesHewlett-Packard offers support 24 hours a day, seven days a weekthrough the use of automated electronic services including:He

Hewlett-Packard FTP Library ServiceTo access the HP FTP Library, follow these steps:1. Enter the command:ftp ftp-boi.external.hp.com The ftp> promp

CompuServeCompuServe is an electronic information and communication servicerun by an independent company. The service is typically accessed with acomp

HP FIRST Fax Retrieval ServiceHP FIRST is an automated fax retrieval service that is available 24 hoursa day, seven days a week. HP FIRST provides inf

ACables and ConnectorsRecommended CablesTwisted-Pair Cable/Connector Pin-OutsThinLAN Cable RequirementsAUI Cable Minimum Pin-OutDistributed Management

This appendix lists cables that have been tested and verified for use withthe HP AdvanceStack 10Base-T Hubs. It also includes minimum pin-outinformati

Recommended CablesCable Function Port Type on PC,or ModemCable Type HP Product NumberNetwork connections to the hub:Hub to end nodeconnection— Twisted

Twisted-Pair Cable/ConnectorPin-OutsTwisted-Pair Cable for Hub-to-ComputerNetwork ConnectionTo connect PCs or other network devices to the hub, use a“

2 Installing and Using HP Stack ManagerSoftware Description . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2Comput

Twisted-Pair Cable for Hub-to-Hub DistributedManagement Chaining(not a network connection)To connect hubs to each other through the Extension (In/Out)

Twisted-Pair “Crossover” Cable forHub-to-Hub Network ConnectionFor wiring between two hubs for data communications, the transmit andreceive pairs must

Twisted-Pair Cable Pin AssignmentsTwisted-Pair Straight-Through CableHub End Computer orTransceiver EndSignalPins PinsSignal(receive +)(receive –)(tra

AUI Cable Minimum Pin-OutTransceiver end15-pin femaleHub end15-pin maleSignal 234569101213234569101213Co

Distributed ManagementRS-232 Connector and CablePin-OutsThe hub’s console connector is wired as if it is a terminal (DTE), readyto be connected to a m

RS-232-C “Null Modem” Cablefor Direct Console Connection (supplied with the hub) PC end9-pin femaleHub end9-pin female22Rx33Tx55GNDRS-232-C Modem Cabl

BSpecifications

PhysicalHP J2600A 12-Port HubHP J2601B 24-Port Hub HP J2602B 48-Port HubWidth: 44.2 cm (17.4 in) 44.2 cm (17.4 in)Depth: 29.8 cm (11.7 in) 29.8 cm

ElectromagneticEmissionsFCC part 15 Class ACISPR-22 Class AEN 55022 Class AVCCI Level IImmunityESD IEC 801-2 (1991) (4 kV CD, 8 kV AD)Radiated (Immuni