3com 5108M-TP User Manual

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2 - 2 ONline Ethernet 10BASE-T Module User’s Guide
Understanding the General Rules
As part of your network design, it is important to consider your network 
size. For instance, is the network (end-to-end) 100 meters, 1000 meters, 
4000 meters, or more? What are your plans for expansion? Your answers 
play a role in how you configure your network. For example, once the 
network expands beyond a certain size, you need to add a bridge or other 
internetworking device.
This section describes general rules for configuring an Ethernet network 
using fiber as the backbone medium. It also provides rules to ensure that 
your network configuration conforms to distance limitations imposed by 
Ethernet and networking equipment. 
This section includes:
Basic Network Rules
LAN Equivalence
Basic Network Rules
This section outlines the basic network rules and 3Com recommendations 
for these rules. For more hardware-specific information on the 10-Port 
module, refer to Appendix A.