3Com 8 manual Introduction

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INTRODUCTION

Welcome to the world of networking with 3Com® . In the modern business environment, communication and sharing information is crucial. Computer networks have proved to be one of the fastest modes of communication but, until recently, only large businesses could afford the advantage of networking. The OfficeConnect® product range from 3Com has changed this, bringing networks into the small office.

The OfficeConnect Ethernet Hub 4, OfficeConnect Ethernet Hub 4C, OfficeConnect Ethernet Hub 8 and OfficeConnect Ethernet Hub 8C, are ideal for creating small networks. They are compact and attractively designed for desktop use.

These four products are part of the OfficeConnect range which stack neatly together with the OfficeConnect stacking clip.

This user guide describes how to use the OfficeConnect hubs. The hubs have similar features and so this user guide contains general and specific information. When referring to all products, this guide uses the term ‘OfficeConnect hub’.

A single OfficeConnect hub allows you to create a small network with up to four or eight workstations, as shown in Figure 1. If you need to connect more workstations, simply use the stacking clip to connect another OfficeConnect hub to form a stack (each hub is a single repeater).

Figure 1 Small Network With OfficeConnect Hub and Optional Print Server

HP JetDirect

OfficeConnect

print server

OfficeConnect hub

The OfficeConnect hubs have the following ports:

The Ethernet Hub 4 has four 10BASE-T ports.

The Ethernet Hub 4C has four 10BASE-T ports, a 10BASE-2 port and an AUI port.

The Ethernet Hub 8 has eight 10BASE-T ports.

The Ethernet Hub 8C has eight 10BASE-T ports and a ninth 10BASE-2 port.

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Contents OfficeConnect Ethernet Hub 4, 4C, 8, 8C 3Com Corporation 5400 Bayfront Plaza Santa Clara, California Important Safety Information Wichtige Sicherheitshinweise Consignes importantes de sécurité Technical Support Introduction What Else Do I Need? Creating Your NetworkWorkstation Connections Transceiver ConnectionsTwisted Pair TP Cables Hub Connections10BASE-2 Stacking Clip Stacking the Units TogetherRubber Feet Securing Your Hub Using Your HubPositioning Your Hub Ethernet Hub 4 and 4C-Front Officeconnect Ethernet HUB 4 and 4CNetwork Utilization LEDs Hub 4C only AUI/COAX Status LEDs Hub 4C only10BASE-2 port Hub 4C only Ethernet Hub 4 and 4C-RearConnecting Transceivers to the AUI Port Connecting Workstations and Other Equipment to Your HubConnecting OfficeConnect Ethernet Hubs Together Checking Connections Connecting Hubs Using 10BASE-2Spot Checks Connecting Hubs Using 10BASE-TProblem Solving for the HUB 4 and 4C Straight-through Cable/Crossover Cable Officeconnect Ethernet HUB 8 and 8C Power LED Collision LEDEthernet Hub 8 and 8C-Front Port Status LEDs10BASE-2 port Hub 8C only Power Adapter socket Uplink/Normal switchEthernet Hub 8 and 8C-Rear Connecting Workstations and Other Equipment to Your Hub 50 Ohm Terminator Switch set to Normal out Uplink Problem Solving for the HUB 8 and 8C Normal Pin Uplink Port Rx+ Tx+ Networking Terminology Dimensions and Operating Conditions Dimensions and StandardsPower Weight StandardsEnd Of Life Statement Environmental StatementsRegulated Materials Statement Environmental Statement about the DocumentationImportant Safety Information Wichtige Sicherheitshinweise Consignes Importantes DE Sécurité 3Com Knowledgebase Web Services Online Technical ServicesTechnical Support World Wide Web SiteSupport from 3Com Support from Your Network SupplierEurope, South Africa, and Middle East Country Telephone Number Asia, Pacific RimEurope North America Country Telephone Number Latin AmericaCountry Telephone Number Fax Number Returning Products for Repair3Com Corporation Limited Warranty Warranties Exclusive Disclaimer Electromagnetic Compatibility Wall mounting screw hole guide 150 mm 5.9 Part No. DUA 1670-0AAA04 Published June