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Fit AP V200R010C00 Command Reference

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virtual-cable-test

virtual-cable-test

Function

The virtual-cable-test command tests the cable connected to an Ethernet electrical interface and displays the test result.

Format

virtual-cable-test

Parameters

None

Views

GE interface view, MultiGE interface view

Default Level

3: Management level

Usage Guidelines

Usage Scenario

You can run the virtual-cable-test command to check whether the cable works properly. According to the command output, you can locate and rectify cable faults.
  • If the cable works properly, the total length of the cable is displayed.
  • If the cable cannot work properly, the distance between the interface and the fault point is displayed.

Precautions

  • Only the electrical interface or combo interface working as an electrical interface support the VCT function.
  • Running the virtual-cable-test command may affect services on the interface in a short period of time.
  • The VCT function is supported only when the local and peer ends work at 1000 Mbit/s in auto-negotiation mode.The VCT function is supported only by the R230D when its interfaces work at 100 Mbit/s in auto-negotiation mode.
  • When the cable works properly, the VCT function is not supported by all or some interfaces of the following APs. The cable length is 0 in the command output of interfaces.

  • If the cable cannot work properly, the distance between the interface and the failure point is displayed.
  • The test result is only for reference and may be inaccurate for cables of some vendors.
  • VCT detection cannot be performed on multiple interfaces of the device at the same time.
  • For wire sequence of cables, see Testing the Connection of Assembled Cables in the Hardware Installation and Maintenance Guide.

Example

# Test the cable connected to 0/0/1.

Table 5-9  Description of the virtual-cable-test command output

Item

Description

Pair A/B/C/D

Four pairs of circuits in a network cable.

Pair A length

Length of a network cable:
  • The length is the distance between the interface and the fault point if a fault occurs.
  • The length is the actual length of the cable when the cable works properly.

Pair A state

Network cable status:
  • Ok: indicates that the circuit pair is terminated normally.
  • Open: indicates that the circuit pair is not terminated.
  • Short: indicates that the circuit pair is short-circuited.
  • Crosstalk: indicates that the circuit pairs interfere with each other.
  • Unknown: indicates that the circuit pair has an unknown fault.
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Updated: 2019-07-18

Document ID: EDOC1100064353

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