3Com 5108M-TP guide

Figure 1-1. 10BASE-T Module Faceplate and ONline System Concentrator

Introduction 1 - 3

Image 19

3Com 5108M-TP manual BASE-T Module Faceplate and ONline System Concentrator

Contents

ONline Ethernet 10BASE-T Module User’s Guide Ii ONline Ethernet 10BASE-T Module User’s Guide ONline Ethernet 10BASE-T Module User’s Guide Iv ONline Ethernet 10BASE-T Module User’s Guide Contents Installing and Operating the Module Figures Viii ONline Ethernet 10BASE-T Module User’s Guide Tables Page Audience How to Use This Guide Structure of This Guide Convention Indicates Example Document ConventionsUsr/snm/agents Related Documents Reference Documents 3Com DocumentsPage ONline Ethernet 10BASE-T Module Introduction Indicators BASE-T Module Faceplate and ONline System Concentrator Interpretation of the 10BASE-T Module LEDs Dip SwitchesLED Name Color State Indicates Dip Switch SW1 Port Status Dip Switch SW1 Settings and Interpretations Dip Switch SW3 Crossover Mode, Channel Select, Squelch Squelch Mode Switch Dip Switch SW3 Settings for Switches 1Switch Function Factory Switch Setting Default Off Crossover Mode Switch Channel Select Switch Settings Switch Channel Selection Dip Switch SW3 Settings and Interpretations for Switches 2 Dip Switch SW6 Settings and Interpretations Related FeaturesEnable Channel Check Codes LED State Channel ConfigurationPage Designing and ExpandingtheNetwork Basic Network Rules Understanding the General Rules Rule Definition Recommendations/Notes Seven Basic Network Rules Certain LAN devices Seven Basic Network Rules LAN Product Equivalent Distances LAN EquivalenceLAN Product Equivalent Distance meters Fiber Backbone, Twisted Pair To-The-Desk Fiber Backbone, Twisted Pair To-The-Desk Example Sample Configuration Distance Calculation Unshielded Twisted Pair High Squelch Low Squelch Maximum Link Distance on Twisted PairShielded Twisted Pair High Squelch Low Squelch IBM Type Unshielded Twisted Pair Network Twisted Pair Backbone, Twisted Pair To-The-Desk Redundant Links Redundant Twisted Pair ConfigurationPage Patch Panels Precautionary Procedures Installing and Operating the Module Installation Procedures Unpacking Procedures Installing a 10BASE-T Module BASE-T Module Cable Connection Troubleshooting Troubleshooting Troubleshooting With the Port Status LEDs Troubleshooting With the Status LEDs Troubleshooting With the Port Status LEDs Troubleshooting With the Port Status LEDs LED Name Troubleshooting With the Activity LEDsTroubleshooting With the Port Activity LEDs Possible Problem Troubleshooting State Solutions Technical Assistance Electrical Specifications ONline Ethernet 10BASE-T Module Specifications Mechanical Specifications Environmental SpecificationsGeneral Specifications Twisted Pair Connectors Twisted Pair Connectors and Cables Twisted Pair Cables Figure A-1. RJ45 Connector Pin-outs Connecting Twisted Pair Cables Page On-line Technical Support Technical Support Email Technical Support Support from Your Network SupplierWorld Wide Web Site Support from 3Com Returning Products for Repair Accessing the 3Com MIB 3Com Technical Publications Page Index MIB, B-4