3Com 3c17300 Implementation Guide - Page 79

Configuration Rules with Full Duplex, Ethernet rules are

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Configuration Rules for Fast Ethernet 81 collapsed backbone). For example, a 225 m (738 ft) fiber link from a repeater to a router or switch, plus a 100 m (328 ft) UTP link from a repeater out to the endstations. Configuration Rules with Full Duplex The Switch provides full duplex support for all its ports, including Expansion Module ports. Full duplex allows packets to be transmitted and received simultaneously and, in effect, doubles the potential throughput of a link. With full duplex, the Ethernet topology rules are the same, but the Fast Ethernet rules are: ■ Maximum UTP cable length is 100 m (328 ft) over Category 5 cable. ■ A 2 km (6562 ft) fiber link is allowed for connecting switch-to-switch, or endstation-to-switch.

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Configuration Rules for Fast Ethernet
81
collapsed backbone). For example, a 225 m (738 ft) fiber link from a
repeater to a router or switch, plus a 100 m (328 ft) UTP link from a
repeater out to the endstations.
Configuration Rules
with Full Duplex
The Switch provides full duplex support for all its ports, including
Expansion Module ports. Full duplex allows packets to be transmitted and
received simultaneously and, in effect, doubles the potential throughput
of a link.
With full duplex, the Ethernet topology rules are the same, but the Fast
Ethernet rules are:
■
Maximum UTP cable length is 100 m (328 ft) over Category 5 cable.
■
A 2 km (6562 ft) fiber link is allowed for connecting switch-to-switch,
or endstation-to-switch.