Run Diagnostics Cable Ports - Extreme Networks ExtremeWare Command Reference Manual

Troubleshooting Commands

run diagnostics cable ports

run diagnostics cable [ports <portlist> | all]
Description
Runs diagnostics on Ethernet cables.
NOTE
This command is available only on the Summit 400 series switches and on the G24T
Gigabit Ethernet module in the BlackDiamond 6800 series switches. For more information about
commands used with the High-Density Gigabit Ethernet modules, refer to Chapter 29.
Syntax Description
portlist Runs cable diagnostics for one or more port numbers.
all Runs cable diagnostics for all ports in the switch
Default
N/A
Usage Guidelines
This command tests each of the four unshielded twisted-pair (UTP) cables. When the test completes, the
command prompts you to enter the show port
of the test.
By reviewing the output of the
• The length of the cable
• Whether there is a successful termination, or whether there is an open or short
Examples
The following example tests the Ethernet cable inserted into port 1. The four copper pairs do not all
have the same length, which might indicate a kink in the cable, or a open connection:
Summit400-48t:27 # run diagnostics cable ports 1
Cable Diagnostics has completed, to view results enter
show port <port list> cable diagnostics
Summit400-48t:28 # show port 1 cable diagnostics
Port Pair Length
1 Pair A 3 meters
Pair B 2 meters
Pair C 1 meters
Pair D 1 meters
1256
portlist
command you can determine:
show
Terminated
Terminated
Open or Short
Open or Short
cable diagnostics command to see the results
Status
3 High-Density
ExtremeWare 7.7 Command Reference Guide