cable-snr-test

Function

The cable-snr-test command checks the network cable quality and displays the check result.

Only XGE electrical interfaces on the ES5D21X08T00 of S5730-HI, S5731-H, and S5731S-H, GE electrical interfaces on the S5731-H, S5735-L, S5735S-L, S5735S-L-M, S5735-S (except S5735-S48S4X), S5735S-S, S5735-S-I, S5720I-SI, and MultiGE electrical interfaces on the S5720-28X-PWH-LI-AC, S5720-28X-PWH-LI-ACF, S5732-H24UM2CC, S5732-H48UM2CC, S6720-32C-SI-AC, S6720-32C-SI-DC, S6720-32C-PWH-SI-AC, S6720-32C-PWH-SI, S6720-52X-PWH-SI, S6720-56C-PWH-SI-AC, and S6720-56C-PWH-SI support this command.

Format

cable-snr-test

Parameters

None

Views

MultiGE interface view, XGE interface view, GE interface view

Default Level

3: Management level

Usage Guidelines

Usage Scenario

You can check the quality of the network cable on an electrical interface to determine whether the network cable quality meets communication requirements.

Precautions

This command checks real-time quality of the network cable on an interface, and the network cable quality changes with the external environment.
A MultiGE electrical interface supports accurate network cable quality check only when it works at the rate of 2.5 Gbit/s or higher.
An XGE electrical interface supports accurate network cable quality check only when it works at the rate of 10 Gbit/s.
A GE electrical interface supports accurate network cable quality check only when it works at the rate of 1 Gbit/s.
An interface does not support the network cable quality check when it is Down or in loopback detection mode.

Example

# Check the network cable quality on GigabitEthernet0/0/1.

<HUAWEI> system-view
[HUAWEI] interface gigabitethernet 0/0/1
[HUAWEI-GigabitEthernet0/0/1] cable-snr-test
Info: The current network cable is of good quality.