Twisted-Pair Cable for Hub-to-Hub Distributed
Management Chaining
(not a network connection)
To connect hubs to each other through the Extension (In/Out) Ports to
form a distributed management chain, use a “straight-through” 10Base-T
cable. The twisted-pair wires must be twisted through the entire length
of the cable. The wiring sequence must conform to AT&T 258A (not
USOC). See “Twisted-Pair Cable Pin Assignments” later in this chapter
for a listing of the signals used on each pin.
Note Pins 4 and 5 must be wired to a twisted pair.
Pins 1 ,2, 3, 6, 7, and 8 are not used in this application, although they may
be wired in the cable.
The maximum total length of all the extension cables in a chain is 185
meters.
blue/white
white/blue
Straight-through cable
Cables and Connectors
Cables and Connectors
A-5
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