3Com 5124M-TP Switch User Manual


 
Designing and Expanding the Network 2 - 11
Example: Sample Configuration Distance Calculation
Use the following example to determine if the 10BASE-T transceivers in
Figure 2-3 are within legal Ethernet limits. Identify the two transceivers
that are likely to be the greatest fiber equivalent distance apart. In
Figure 2-3, they are 10BASE-T transceivers A and B.
Figure 2-3 shows 24-Port Modules installed in each of three concentrators.
Figure 2-3. Sample Configuration Distance Calculation Using
24-Port Modules
To determine if your network configuration is legal:
1. Use 4200 m as the maximum network diameter for a pure fiber
network as defined by the 802.3 specification.