H3C SOHO IE4300, Command Reference Manual

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virtual-cable-test
Use
virtual-cable-test
to test the cable connection of an Ethernet interface and display the
test result.
Syntax
virtual-cable-test
Views
Layer 2 Ethernet interface view
Predefined user roles
network-admin
Usage guidelines
This command is not available on Ethernet copper ports operating at 10 Mbps or 100 Mbps and fiber
ports.
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.
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:
Pair A length: 1 meters
Pair B length: 5 meters
Pair C length: 1 meters
Pair D length: 1 meters
Pair A state: Abnormal(open)
Pair B state: Abnormal(open)
Pair C state: Abnormal(open)
Pair D state: Abnormal(open)
Pair Impedance mismatch: yes
Pair skew: - ns
Pair swap: -
Pair polarity: -
Insertion loss: - db
Return loss: - db
Near-end crosstalk: - db
Table 9 Command output
Field Description
Pair x length
When the cable pair state is OK , this field displays the total length of the
cable pair.
When the cable pair is in any other state, this field displays the length from
the local interface to the faulty point.