HP J4818A, Руководство по установке и началу работы

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B-6
Switch Ports and Network Cables
Twisted-Pair Cable/Connector Pin-Outs
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Crossover Twisted-Pair Cable for
10 Mbps or 100 Mbps Network Connection
The HP Auto-MDIX operation of the 10/100 ports on the switches also allows
you to use “crossover” cables for all network connections, to PCs, servers or
other end nodes, or to hubs or other switches.
If any of these ports are given a fixed configuration, for example 100 Mbps/
Full Duplex, the ports operate as MDI-X ports, and crossover cables
must be
then used for connections to hubs or switches or other MDI-X network
devices.
Cable Diagram
N o t e
Pins 1 and 2 on connector “A”
must
be wired as a twisted pair to pins 3 and 6
on connector “B”.
Pins 3 and 6 on connector “A”
must be wired as a twisted pair to pins 1 and 2
on connector “B”.
Pins 4, 5, 7, and 8 are not used in this application, although they may be wired
in the cable.
.
Pin Assignments
Crossover Cable
white/orange
orange/white
white/green
green/white
Connector “A”
Connector “B”
Switch End (MDI-X) Hub or Switch Port, or Other
MDI-X Port End
Signal Pins Pins Signal
r
receive -
tr
transmit - 1
2
3
6 6
3
2
1 transmit -
tr
receive -
r
2353-ed2.book Page 6 Friday, February 9, 2001 6:00 PM