Designing and Expanding the Network 2 -19
Network Distance Calculation Examples
The following examples demonstrate how to calculate network distances
for various all-fiber networks.
Example: Network With 3 Concentrators
Figure 2-6 shows a network with 3 concentrators.
Figure 2-6. Network With 3 Concentrators
To determine the maximum allowab le link distance between Concentrators
A and C:
1. Use 4200 m as the maximum network diameter for a pure fiber
network as defined by the 80 2.3 specification. (Rule 3).
2. Subtract the fiber equival ent of the three concentrators with
10BASE-FB Modules that occur on the p ath between the two
transceivers:
3 * 190 meters = 570 meters (Rule 4)