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5108M-TP manual 1. 10BASE-T Module Faceplate and ONline System Concentrator, Introduction 1
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Troubleshooting
Specs
Install
Channel Configuration
Connecting Twisted Pair Cables
Problem
To set redundancy between two 10BASE-T Modules, connect two links between the modules. The redundant link must be connected to a port on the same 10BASE-T Module as the primary link. Use a crossover adapter between each link unless you choose to uncross port 8 on one of the modules to make the connection. Refer to for information on using crossover mode. Then use the SET PORT slot.port MODE REDUNDANT slot.port command to specify which port is the primary link and which is the backup link
Unpacking Procedures
Default
Switch Setting
Page 19
Image 19
Figure
1-1.
10BASE-T
Module Faceplate and ONline System Concentrator
Introduction 1 - 3
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Page 20
Page 19
Image 19
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Contents
Document Number Printed March Model Number 5108M-TP 3Com Corporation
ONline Ethernet 10BASE-T Module User’s Guide
118 Turnpike Road Southborough, MA U.S.A 508 FAX 508
EN55022/CISPR22 Compliance
Federal Communications Commission Notice
Canadian Emissions Requirements
VDE Class B Compliance
Restricted Rights
ONline Ethernet 10BASE-T Module User’s Guide
iv ONline Ethernet 10BASE-T Module User’s Guide
Chapter 2 - Designing and Expanding the Network
Contents
How to Use This Guide
Chapter 1 - Introduction
Appendix B - Technical Support
Chapter 3 - Installing and Operating the Module
Chapter 4 - Troubleshooting
Appendix A - Specifications
Figures
viii ONline Ethernet 10BASE-T Module User’s Guide
Tables
Page
Audience
How to Use This Guide
Structure of This Guide
Example
Document Conventions
Convention
Indicates
Warning Wear eye
Related Documents
A Caution. A
A Warning. A
Reference Documents
3Com Documents
Page
The ONline Ethernet 10BASE-T Module
1 Introduction
Indicators
Introduction 1
Figure 1-1. 10BASE-T Module Faceplate and ONline System Concentrator
State
Dip Switches
LED Name
Color
Figure 1-2. 10BASE-T Module and Dip Switch Locations
Dip Switch SW1 Port Status
Default
Dip Switch SW3 Crossover Mode, Channel Select, Squelch
Switch
Switch Setting
Switch Setting
Crossover Mode Switch
Squelch Mode Switch
Switch
1 - 8 ONline Ethernet 10BASE-T Module User’s Guide
Channel Select Switch Settings
Switch
Dip Switch SW6 Link Integrity
Channel Selection
Switch
Switch Setting
Related Features
LED and Channel Verification
Switch
Table 1-6. Channel Check Codes
Channel Configuration
The ONline Ethernet Network Management Module
LED State
1 - 12 ONline Ethernet 10BASE-T Module User’s Guide
Designing and Expanding the Network 2
2 Designing and ExpandingtheNetwork
Basic Network Rules
Understanding the General Rules
Table 2-1. Seven Basic Network Rules
Rule
Definition
Recommendations/Notes
Recommendations/Notes
Table 2-1. Seven Basic Network Rules Continued
Rule
Definition
The fiber link distances
Rule
Definition
Recommendations/Notes
Distance meters
LAN Equivalence
LAN Product
Equivalent
Equivalent
Fiber Backbone, Twisted Pair To-The-Desk
Table 2-2. LAN Product Equivalent Distances Continued
LAN Product
Fiber Backbone, Twisted Pair To-The-Desk Example
Figure 2-1. Sample Configuration Distance Calculation
150m
Cable Gauge
Supports Link Distances Up To
22 .6mm
Figure 2-2. Unshielded Twisted Pair Network
Twisted Pair Backbone, Twisted Pair To-The-Desk
Figure 2-3. Redundant Twisted Pair Configuration
Redundant Links
To set redundancy between two 10BASE-T Modules, connect two links between the modules. The redundant link must be connected to a port on the same 10BASE-T Module as the primary link. Use a crossover adapter between each link unless you choose to uncross port 8 on one of the modules to make the connection. Refer to Chapter 1 for information on using crossover mode. Then use the SET PORT slot.port MODE REDUNDANT slot.port command to specify which port is the primary link and which is the backup link
2 - 14 ONline Ethernet 10BASE-T Module User’s Guide
Patch Panels
Precautionary Procedures
3 Installing and Operating the Module
Installation Procedures
Unpacking Procedures
Figure 3-1. Installing a 10BASE-T Module
Figure 3-2. 10BASE-T Module Cable Connection
Troubleshooting
4 Troubleshooting
Indication
Troubleshooting With the Status LEDs
Troubleshooting
Problem
Indication
Troubleshooting
Problem
LED State
Indication
Troubleshooting
Problem
LED State
Troubleshooting
Troubleshooting With the Activity LEDs
Possible Problem
Solutions
Technical Assistance
ONline Ethernet 10BASE-T Module Specifications
A Specifications
Electrical Specifications
Mechanical Specifications
Environmental Specifications
General Specifications
Twisted Pair Connectors
Twisted Pair Connectors and Cables
Figure A-1. RJ45 Connector Pin-outs
Twisted Pair Cables
Connecting Twisted Pair Cables
Page
On-line Technical Support
B Technical Support
Email Technical Support
Support from Your Network Supplier
World Wide Web Site
Support from 3Com
Returning Products for Repair
Accessing the 3Com MIB
3Com Technical Publications
Page
Numerics
Index