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Q:
How can cables connected to the switch be tested?
In the following example ports 1-14 are tested. Ports 10-14 are in a down status and the cables associated with these ports show open.
Rack2sw1# show interfaces brief
Status and Counters - Port Status
| Intrusion MDI Flow Bcast Port Type | Alert Enabled Status Mode Mode Ctrl Limit ------------ ---------- + --------- ------- ------ ---------- ---- ---- ----- 1 100/1000T | No Yes Up 1000FDx MDI off 0 2 100/1000T | No Yes Up 1000FDx MDIX off 0 3 100/1000T | No Yes Up 1000FDx MDIX off 0 4 100/1000T | No Yes Up 1000FDx MDI off 0 5 100/1000T | No Yes Up 1000FDx MDI off 0 6 100/1000T | No Yes Up 1000FDx MDIX off 0 7 100/1000T | No Yes Up 1000FDx MDIX off 0 8 100/1000T | No Yes Up 1000FDx MDIX off 0 9 100/1000T | No Yes Up 1000FDx MDIX off 0 10 100/1000T | No Yes Down 1000FDx NA off 0 11 100/1000T | No Yes Down 1000FDx NA off 0 12 100/1000T | No Yes Down 1000FDx NA off 0 13 100/1000T | No Yes Down 1000FDx NA off 0 14 100/1000T | No Yes Down 1000FDx NA off 0
Rack2sw1# test cable-diagnostics 1-14
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
Rack2sw1# show cable-diagnostics
Cable Diagnostic Status - Copper Ports
MDI Cable Cable Length or Port Pair Status Distance to Fault ---- ------ ----------- --------------------- 1 1-2 OK unknown 3-6 OK unknown 4-5 OK unknown 7-8 OK unknown 2 1-2 OK unknown 3-6 OK unknown 4-5 OK unknown 7-8 OK unknown 3 1-2 OK unknown 3-6 OK unknown 4-5 OK unknown 7-8 OK unknown 4 1-2 OK unknown 3-6 OK unknown 4-5 OK unknown 7-8 OK unknown 5 1-2 OK unknown 3-6 OK unknown 4-5 OK unknown 7-8 OK unknown 6 1-2 OK unknown 3-6 OK unknown 4-5 OK unknown 7-8 OK unknown 7 1-2 OK unknown 3-6 OK unknown 4-5 OK unknown 7-8 OK unknown 8 1-2 OK unknown 3-6 OK unknown 4-5 OK unknown 7-8 OK unknown 9 1-2 OK unknown 3-6 OK unknown 4-5 OK unknown 7-8 OK unknown 10 1-2 Open 0m 3-6 Open 4m 4-5 Open 4m 7-8 Open 3m 11 1-2 OK unknown 3-6 Open 0m 4-5 Open 3m 7-8 Open 4m 12 1-2 Open 0m 3-6 Open 1m 4-5 Open 3m 7-8 Open 3m 13 1-2 Open 2m 3-6 Open 3m 4-5 Open 3m 7-8 Open 3m 14 1-2 OK unknown 3-6 Open 1m 4-5 Open 3m 7-8 Open 3m
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