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Troubleshooting
Specs
Install
Indicators
Connecting Twisted Pair Cables
Accessing the 3Com MIB
Twisted Pair Connectors
Precautionary Procedures
Channel Select Switch Settings
How to
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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
How to Use This Guide
Audience
Structure of This Guide
Convention Indicates Example
Document Conventions
Usr/snm/agents
Related Documents
3Com Documents
Reference Documents
Page
Introduction
ONline Ethernet 10BASE-T Module
Indicators
BASE-T Module Faceplate and ONline System Concentrator
Interpretation of the 10BASE-T Module LEDs
Dip Switches
LED Name Color State Indicates
Dip Switch SW1 Port Status
Dip Switch SW3 Crossover Mode, Channel Select, Squelch
Dip Switch SW1 Settings and Interpretations
Crossover Mode Switch
Dip Switch SW3 Settings for Switches 1
Switch Function Factory Switch Setting Default Off
Squelch Mode Switch
Channel Select Switch Settings
Dip Switch SW3 Settings and Interpretations for Switches 2
Switch Channel Selection
Dip Switch SW6 Settings and Interpretations
Related Features
Enable
LED State Channel Configuration
Channel Check Codes
Page
Designing and ExpandingtheNetwork
Understanding the General Rules
Basic Network Rules
Seven Basic Network Rules
Rule Definition Recommendations/Notes
Certain LAN devices
Seven Basic Network Rules
LAN Product Equivalent Distances
LAN Equivalence
LAN 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 Pair
Shielded Twisted Pair High Squelch Low Squelch IBM Type
Twisted Pair Backbone, Twisted Pair To-The-Desk
Unshielded Twisted Pair Network
Redundant Twisted Pair Configuration
Redundant Links
Page
Patch Panels
Installing and Operating the Module
Precautionary Procedures
Unpacking Procedures
Installation Procedures
Installing a 10BASE-T Module
BASE-T Module Cable Connection
Troubleshooting
Troubleshooting
Troubleshooting With the Status LEDs
Troubleshooting With the Port Status LEDs
Troubleshooting With the Port Status LEDs
Troubleshooting With the Port Status LEDs
Possible Problem Troubleshooting State Solutions
Troubleshooting With the Activity LEDs
Troubleshooting With the Port Activity LEDs
LED Name
Technical Assistance
ONline Ethernet 10BASE-T Module Specifications
Electrical Specifications
Mechanical Specifications
Environmental Specifications
General Specifications
Twisted Pair Connectors and Cables
Twisted Pair Connectors
Figure A-1. RJ45 Connector Pin-outs
Twisted Pair Cables
Connecting Twisted Pair Cables
Page
Technical Support
On-line Technical Support
Email Technical Support
Support from Your Network Supplier
World Wide Web Site
Support from 3Com
Accessing the 3Com MIB
Returning Products for Repair
3Com Technical Publications
Page
Index
MIB, B-4
Top
Page
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Contents