3Com SUPERSTACK 3 3250, Implementation Manual

Page: 100 / 132

100 A
PPENDIX
A: C
ONFIGURATION
R
ULES
Configuration Rules
for Fast Ethernet
The topology rules for 100 Mbps Fast Ethernet are slightly different to
those for 10 Mbps Ethernet.
Figure 29 illustrates the key topology rules
and provides examples of how they allow for large-scale Fast Ethernet
networks.
Figure 29 Fast Ethernet configuration rules
The key topology rules are:
■
Maximum UTP cable length is 100 m (328 ft) over Category 5 cable.
■
A 412 m (1352 ft) fiber link is allowed for connecting
switch-to-switch, or endstation-to-switch, using half-duplex
100BASE-FX.