Cable Diagnostics
Syntax
test cable-diagnostics <PORT-LIST>
Description
Use the command to test for cable faults.
Option
PORT-LIST
Specify copper port as a input port number.
Test cable-diagnostics C21
test cable-diagnostics C21
The 'test cable-diagnostics' command will cause a loss of link and will take a few seconds per interface to complete.
Continue [Y/N]? y
MDI Cable Distance Pair Pair MDI
Port Pair Status to Fault Skew Polarity Mode
--------- ------ -------- ----- ------ ------
C21 1-2 Open 0 m 0 ns
3-6 Open 0 m 0 ns
4-5 Open 0 m 0 ns
7-8 Open 1 m 0 ns
Test cable-diagnostics 1/1-1/10
switch# test cable-diagnostics 1/1-1/10
This command will cause a loss of link on all tested ports and will take
several seconds per port to complete. Use the ‘show cable-diagnostics’ command to view
the results.
Continue (y/n)? Y
switch# show cable-diagnostics 1/1-1/10
Cable Diagnostic Status - Copper Ports
MDI Cable Cable Length or
Port Pair Status Distance to Fault
---- ------ ----------- ---------------------
1/1 1-2 OK 5m
3-6 OK 5m
4-5 OK 7m
7-8 OK 7m
1/2 1-2 OK 7m
3-6 OK 7m
4-5 OK 7m
7-8 OK 7m
1/3 1-2 OK 5m
3-6 OK 7m
4-5 OK 5m
7-8 OK 7m
1/4 1-2 OK 7m
3-6 OK 7m
4-5 OK 7m
7-8 OK 5m
1/5 1-2 OK 4m
3-6 OK 5m
4-5 OK 5m
7-8 OK 4m
1/6 1-2 OK 4m
3-6 OK 4m
4-5 OK 4m
7-8 OK 4m
1/7 1-2 OK 5m
3-6 OK 4m
4-5 OK 5m
7-8 OK 4m
1/8 1-2 OK 4m
3-6 OK 5m
4-5 OK 4m
7-8 OK 4m
1/9 1-2 OK 5m
3-6 OK 5m
4-5 OK 5m
7-8 OK 5m
1/10 1-2 OK 7m
3-6 OK 5m
4-5 OK 5m
7-8 OK 5m
Good cable tests
switch# test cable-diagnostics 51
This command will cause a loss of link on all tested ports and will take
several seconds per port to complete. Use the 'show cable-diagnostics'
command to view the results.
Continue (y/n)? Y
switch# show cable-diagnostics 51
Cable Diagnostic Status - Transceiver Ports
MDI Cable Distance Pair Pair MDI
Port Pair Status to Fault Skew Polarity Mode
---- ------ --------- -------- ----- ------- -----
51 1-2 OK 0 m 8 ns Normal MDI
3-6 OK 0 m 8 ns Normal
4-5 OK 0 m 8 ns Normal MDIX
7-8 OK 0 m 0 ns Normal
switch# test cable-diagnostics 52
This command will cause a loss of link on all tested ports and will take
several seconds per port to complete. Use the 'show cable-diagnostics'
command to view the results.
Continue (y/n)? Y
switch# show cable-diagnostics 52
Cable Diagnostic Status - Transceiver Ports
MDI Cable Distance Pair Pair MDI
Port Pair Status to Fault Skew Polarity Mode
---- ------ --------- -------- ----- ------- -----
52 1-2 OK 0 m 0 ns Normal MDI
3-6 OK 0 m 0 ns Normal
4-5 OK 0 m 0 ns Normal MDIX
7-8 OK 0 m 0 ns Normal
Faulty cable test
switch# test cable-diagnostics 51
This command will cause a loss of link on all tested ports and will take
several seconds per port to complete. Use the 'show cable-diagnostics'
command to view the results.
Continue (y/n)? y
switch# show cable-diagnostics 51
Cable Diagnostic Status - Transceiver Ports
MDI Cable Distance Pair Pair MDI
Port Pair Status to Fault Skew Polarity Mode
---- ------ ----------- ---------- ------ ---------- ------
51 1-2 OK 0 m 0 ns
3-6 Short 1 m 0 ns
4-5 Short 1 m 0 ns
7-8 OK 0 m 0 ns
switch# test cable-diagnostics 52
This command will cause a loss of link on all tested ports and will take
several seconds per port to complete. Use the 'show cable-diagnostics'
command to view the results.
Continue (y/n)? Y
switch# show cable-diagnostics 52
Cable Diagnostic Status - Transceiver Ports
MDI Cable Distance Pair Pair MDI
Port Pair Status to Fault Skew Polarity Mode
---- ------ ----------- ---------- ------ ---------- ------
52 1-2 Open 0 m 0 ns
3-6 Open 0 m 0 ns
4-5 Open 1 m 0 ns
7-8 Open 0 m 0 ns
Error message
Error Message |
Cause |
|---|---|
The transceiver on port 1/A1 does not support cable diagnostics. |
|