3com 100 TX Manuel d'utilisateur

® L INK B UILDER ® FMS ™ 100-TX H UB U SER G UIDE A member of the 3Com LinkBuilder FMS family Part No. 09-0889-000Published March 1996

2 A BOUT T HIS G UIDE Conventions The following table lists the notice icons that are used throughout this guide. Icon Type Description Information

1 I NTRODUCTION The LinkBuilder ® FMS ™ 100-TX Hub is a member of the 3Com ® SuperStack ™ system of stackable network devices. The 100 designatio

1-2 C HAPTER 1: I NTRODUCTION Figure 1-1 Front Panel of LinkBuilder FMS 100-TX Hub Each port (including the thirteenth port) is supplied with thr

Management Unit 1-3 The two expansion connectors are used for adding components (additional hubs or a Management Unit) to create a hub stack. The Lin

1-4 C HAPTER 1: INTRODUCTIONHub Functions The LinkBuilder FMS 100-TX Hub supports the standard functions of an IEEE 802.3 repeater, as listed in Tabl

2INSTALLING THE FMS 100-TX HUBThis chapter discusses the following topics: Unpacking the hub Positioning the hub Installing the hub Installing the

2-2 CHAPTER 2: INSTALLING THE FMS 100-TX HUBIf you ordered one or more transceiver interface modules, they will be packaged separately from the hub.Po

Installing the Hub 2-3Rack Mounting The hub is supplied with two brackets and four screws for rack mounting in a standard 19-inch rack. The four rubbe

2-4 CHAPTER 2: INSTALLING THE FMS 100-TX HUB6 Attach brackets to both sides of the other hubs to be rack-mounted, as described in steps 2 through 4.7

Installing the Transceiver Interface Modules 2-5Desktop Placement If you place the hub on a desk or table, attach the supplied rubber feet to each bot

ii 3Com Corporation 5400 Bayfront Plaza Santa Clara, California 95052-8145 © 3Com Corporation, 1996. All rights reserved. No part o

2-6 CHAPTER 2: INSTALLING THE FMS 100-TX HUBCAUTION: Each module is packed in antistatic material to protect it during shipment. To avoid damaging any

Using the Redundant Power System 2-73 Carefully remove the transceiver interface module from its shipping container.4 Slowly insert the module into th

2-8 CHAPTER 2: INSTALLING THE FMS 100-TX HUBThe RPS cables are inserted into the DC input connectors on the hubs’ rear panels. Remove the rubber prote

Replacing the Fuse 2-9Replacing the Fuse If the hub’s power (PWR) LED was lit initially but is no longer lit, one of the following conditions may have

2-10 CHAPTER 2: INSTALLING THE FMS 100-TX HUB4 Remove the burned-out fuse by pulling it straight out of its socket, as shown in Figure 2-8.Figure 2-8

3MAKING FMS 100-TX HUB CONNECTIONSThis chapter discusses how to use the LinkBuilder FMS 100-TX Hub in various network environments. The chapter also d

3-2 CHAPTER 3: MAKING FMS 100-TX HUB CONNECTIONSHub to Node Once installed, the hub can support up to 12 end node connections. Figure 3-1 shows 11 PCs

Making Network Connections 3-3Figure 3-2 Pin Assignments for Straight-Through CablingThe pin assignments for the 100BASE-TX transceiver interface mo

3-4 CHAPTER 3: MAKING FMS 100-TX HUB CONNECTIONSHub-to-HubInterconnectionYou can interconnect up to eight hubs, using expansion cables to form one log

Making Network Connections 3-5Hub toManagement UnitYou can connect the hub (or a hub stack) to a Management Unit by using the expansion cable. Connect

iii C ONTENTS A BOUT T HIS G UIDE Introduction 1How to Use This Guide 1Conventions 2 1 I NTRODUCTION General Description 1-1Managem

3-6 CHAPTER 3: MAKING FMS 100-TX HUB CONNECTIONSHub to Backbone You can connect hubs and hub stacks to the network backbone through the transceiver in

Considerations for Multisegmented Networks 3-7Considerations for Multisegmented NetworksThe 100BASE-T technology defined in the IEEE 802.3 standard pro

3-8 CHAPTER 3: MAKING FMS 100-TX HUB CONNECTIONSFigure 3-7 10 and 100 Mbps Collision Domains Connected by a Switching HubA Fast Ethernet packet tran

Classification of Repeaters 3-9Classification of RepeatersThe IEEE 802.3 standard defines two classes of repeaters for 100BASE-T Fast Ethernet networks,

3-10 CHAPTER 3: MAKING FMS 100-TX HUB CONNECTIONSClass II Repeaters A Class II repeater is a hub with internal delay such that no more than two hubs c

LED Descriptions 3-11LED Descriptions The LinkBuilder FMS 100-TX Hub is equipped with front panel LEDs to provide port status and hub information (see

3-12 CHAPTER 3: MAKING FMS 100-TX HUB CONNECTIONSOperation LEDs Table 3-3 interprets the meaning of the hub operation LEDs.Unit Digital Display The fr

Power-Up Disabled Option Switch 3-13Power-Up Disabled Option SwitchIf network management is present, an external switch on the hub’s rear panel allows

4CABLINGThe LinkBuilder FMS 100-TX Hub supports Fast Ethernet cabling and topology requirements, as detailed in the IEEE 802.3 specification. Fast Ethe

iv Using Transceiver Interface Modules 3-6Considerations for Multisegmented Networks 3-7Classification of Repeaters 3-9Class I Repeaters

4-2 CHAPTER 4: CABLINGTransceiver Interface Module Cabling RequirementsThe two transceiver interface modules provide downlink connectivity to another

Topology Rules 4-3One Class I Repeater A total network span of 260.8 meters (combined UTP and fiber cabling) is allowed in single-Class I hub topologie

4-4 CHAPTER 4: CABLINGIf greater distances and more ports are required, you can use an internetworking device (such as a bridge, router, or switch) to

ASPECIFICATIONSThis appendix lists the specifications for the LinkBuilder FMS 100-TX Hub.Hub Specifications Physical DimensionsLength: 30.48 cm (12 in

BTECHNICAL SUPPORT3Com provides easy access to technical support information through a variety of services. This appendix describes these services.On-

B-2 APPENDIX B: TECHNICAL SUPPORTAccess by ISDNISDN users can dial-in to 3ComBBS using a digital modem for fast access up to 56 Kbps. To access 3ComBB

Support from Your Network Supplier B-33ComFactsAutomated Fax Service3Com Corporation’s interactive fax service, 3ComFacts, provides data sheets, techn

B-4 APPENDIX B: TECHNICAL SUPPORTSupport from 3ComIf you are unable to receive support from your network supplier, technical support contracts are ava

GLOSSARY10BASE-T The IEEE 802.3 physical layer specification for a 10 Mbps Ethernet network over two pairs of Category 3, 4, or 5 UTP wire.100BASE-FX T

v I NDEX L IMITED W ARRANTY FCC C LASS A V ERIFICATION S TATEMENT CISPR A C OMPLIANCE CE N OTICE

2 GLOSSARYClass I A type of 100BASE-T repeater with internal delay such that only one repeater or stack may exist between any two end stations within

GLOSSARY 3Hub A device used to provide connectivity between network devices. Hubs perform the basic repeater functions of restorating signal amplitude

4 GLOSSARYSuperStack 3Com system of stackable hubs, servers, switches, routers, SDLC converters, and power supplies. SuperStack systems can support a

INDEXNumerics100 Mbps media options100BASE-FX 1-1required cabling 3-6100BASE-T4 1-1100BASE-TX 1-1required cabling 3-6100BASE-FX transceiver

2 INDEXHhubconnectionshub to backbone 3-6hub to Management Unit 3-1, 3-5hub to node 3-2, 4-2hub-to-hub interconnection 3-4description 1-1fun

INDEX 3Sspecificationsenvironmental operating ranges A-1physical dimensions A-1power requirements A-1stacking hubs 1-3straight-through cabling,

LIMITED WARRANTYHARDWARE: 3Com warrants its hardware products to be free from defects in workmanship and materials, under normal use and service, for

FCC CLASS A VERIFICATION STATEMENTWARNING: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant

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vii F IGURES 1-1 Front Panel of LinkBuilder FMS 100-TX Hub 1-2 1-2 Rear Panel of LinkBuilder FMS 100-TX Hub 1-2 2-1 Attaching a Bracket for R

viii T ABLES 1-1 Supported IEEE 802.3 Repeater Functions 1-4 2-1 Transceiver Interface Modules 2-5 3-1 LinkBuilder FMS 100-TX Hub Network Con

A BOUT T HIS G UIDE Introduction This guide describes how to mount the 3Com ® LinkBuilder ® FMS ™ 100-TX Hub in a rack, install the hub on the n