HP 6125G Command Reference Manual page 46

Description
Use virtual-cable-test to test the cable connection of an Ethernet interface. The test results are displayed
within five seconds.
The following cable states are available:
Normal—The cable is in good condition.
•
Abnormal—Any fault other than a short or open circuit is detected.
•
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.
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. The cable length detection error is up to 5 m (about 16 ft). If a test item
is not available, a hyphen (-) is displayed.
NOTE:
Fiber ports and internal Ethernet ports do not support this command.
Examples
# Test the cable connection of GigabitEthernet 1/0/1.
<Sysname> system-view
[Sysname] interface gigabitethernet 1/0/1
[Sysname-GigabitEthernet1/0/1] 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
NOTE:
The Pair Impedance mismatch field has the following values:
Yes—Match
•
No—Mismatch
•
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