Specifications

Hardware Reference 37
C613-03084-00 REV A
To display the cable test results for a specified port or all ports, use the
command:
show test cable [port={port-number|all}]
Cable test results are reported for all four pairs of cable and are shown in
“state(length)” format. Possible state values are:
■ no test
■ testing
■ failed
■ good
■ short
■ open
When the state is "open" or "short" the length shown is the approximate
distance to a fault. The accuracy of the distance to the "open" or "short" location
is plus or minus two meters.
When the state is "good" the length shown indicates the approximate length of
the specified pair of cables. The actual value depends on such factors as the
attenuation of the cable, output levels of the remote transceiver, and connector
impedance. The accuracy is plus or minus 10 meters.
Note that “good” cable length, i.e “good(length)”, is reported for ports
operating at 1000Mbps. For ports operating at 10Mbps and 100Mbps, “good” is
reported.
Good cable length is only reported after the gigabit link is established.
An example of the output displayed by a show test cable command is shown
below.