ZyXEL Communications XS3800-28 Cli Reference Manual page 366

106.2 Command Examples
This example checks the cable pairs on ports 1 and 4.
sysname# cable-diagnostics 1
Port Channel
---- -------
1
sysname# cable-diagnostics 4
Port Channel
---- -------
4
The following table describes the labels in this screen.
Table 234 Cable-diagnostics
LABEL
Port
Channel
Pair status
Cable length
Distance to fault
Chapter 106 Additional Commands
Pair status
-----------
pairA Open
pairB Open
pairC Open
pairD Open
Pair status
-----------
pairA Ok
pairB Ok
pairC Ok
pairD Ok
DESCRIPTION
This is the number of the physical Ethernet port on the Switch.
An Ethernet cable usually has four pairs of wires. A 10BASE-T or 100BASE-TX port only use
and test two pairs, while a 1000BASE-T port requires all four pairs.
This displays the descriptive name of the wire-pair in the cable.
Ok: The physical connection between the wire-pair is okay.
Open: There is no physical connection (an open circuit detected) between the wire-
pair.
Short: There is an short circuit detected between the wire-pair.
Unknown: The Switch failed to run cable diagnostics on the cable connected this port.
Unsupported: The port is a fiber port or it is not active.
This displays the total length of the Ethernet cable that is connected to the port when
the Pair status is Ok and the Switch chipset supports this feature.
This shows N/A if the Pair status is Open or Short. Check the Distance to fault.
This shows Unsupported if the Switch chipset does not support to show the cable
length.
This displays the distance between the port and the location where the cable is open
or shorted.
This shows N/A if the Pair status is Ok.
This shows Unsupported if the Switch chipset does not support to show the distance.
Ethernet Switch CLI Reference Guide
Cable length (m) Distance to fault (m)
---------------- ---------------------
N/A
N/A
N/A
N/A
Cable length (m) Distance to fault (m)
---------------- ---------------------
5.55
5.55
5.55
5.55
366
0.00
0.00
0.00
0.00
N/A
N/A
N/A
N/A