3Com Switches/Hub - Manual (Page 3)

Fast Ethernet
Fast Ethernet is based on the Ethernet
standard yet runs at 10 times the speed
(100 Mbps). It is now one of the most
popular high-speed technologies because
of its cost effectiveness, stability, and
compatibility with existing Ethernet
LAN environments. Fast Ethernet
switching allows dedicated performance
between two devices.
The total length of cable (A+B+C
below) between two workstations
and a nonrepeater piece of equipment
(such as a switch) must not exceed
205 m (672 ft). Each cable (A, B, or C)
must not exceed 100 m (328 ft).
3Com recommends using Category 5
cables and that the cable (B) between
the Fast Ethernet hub is not longer
than 5 m (16.4 ft). This allows the
maximum hub-to-workstation cable
length (A or C) of 100 m (328 ft) to be
used, as shown.
O F F I C E C O N N E C T ® S W I T C H E S A N D H U B S
Example:
100 Mbps link
A
B
C Dual Speed
Hub 8
Hub
Switch
100 Mbps
hub
Hub
Work
station
Work
station
5 m
(16.4 ft)
100 m
(328 ft)
100 m
(328 ft)
Work
station
Work
station
These rules do not
apply to Fast
Ethernet switches.
You can connect
as many
OfficeConnect
switches together
as your business
requires.
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