D-Link xStack DGS-3620-52P, Руководство пользователя

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xStack® DGS-3620 Series Layer 3 Managed Stackable Gigabit Switch CLI Reference Guide
209
Chapter 14 Cable Diagnostics
Commands
cable_diag ports [<portlist> | all]
14-1 cable_diag ports
Description
This command is used to test copper cabling.
For 10/100Based-TX link speed RJ45 cables, two pairs of cables will be diagnosed.
For 1000Base-T link speed RJ45 cables, four pairs of cables will be diagnosed.
The type of cable errors can be open, short, or crosstalk.

Open means that the cable in the error pair does not have a connection at the specified
position.

Short means that the cables in the error pair has a short problem at the specified position.

Crosstalk means that the cable in the error pair has a crosstalk problem at the specified
position.
For Fast Ethernet ports:

Where the link partner is powered on with no errors and the link is up , this command
can detect the cable length.

Where the link partner is powered on with errors , this command can detect whether the
error is open, short, or crosstalk. In this case this command can also detect the distance of
the error.

Where the link partner is powered down with no errors and the link is down , this
command can detect the cable length.

When the link partner is powered down with errors , this command can detect whether
the error is open, short, or crosstalk. In this case this command can also detect the
distance of the error.

When there is no link partner with no errors , this command can detect the cable length.

When there is no link partner with errors , this command can detect whether the error is
open, short, or crosstalk. In this case this command can also detect the distance of the
error.
For Gigabit Ethernet ports:

Where the link partner is powered on with no errors and the link is up , this command
can detect the cable length.