H3C S7500E Series Command Reference Manual page 59

Description
Use the virtual-cable-test command to test the cable connection of an Ethernet interface. The test
results are displayed within five seconds.
The cable status can be:
normal, if the cable is in good condition.
abnormal, if any fault other than a short or open circuit is detected.
abnormal (open), if an open circuit is detected.
abnormal (short), if a short circuit is detected.
failure, if the detection fails.
If the cable connection is normal, the displayed cable length is the total length of the cable. If the cable
connection has a fault, it is the length from the local port to the faulty point.
Optical interfaces do not support this command.
If the link of an Ethernet interface is up, testing its cable connection will cause the link to go down
and then up.
The test result is for reference only. If a test item is not available, a hyphen (-) is displayed.
Examples
# Test the cable connection of interface GigabitEthernet 2/0/1.
<Sysname> system-view
[Sysname] interface gigabitEthernet 2/0/1
[Sysname-GigabitEthernet2/0/1] virtual-cable-test
Cable status: normal, 1 metres
Pair Impedance mismatch: -
Pair skew: - ns
Pair swap: -
Pair polarity: -
Insertion loss: - db
Return loss: - db
Near-end crosstalk: - db
The Pair Impedance mismatch field takes two values: yes for match, and no for mismatch.
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