Reference Guide

1572 PHY Diagnostics Commands
This command takes the port offline to measure the cable length.
Use the show copper-port tdr command to view the results..
Do you wish to continue and take the port offline (Y/N)?y
The following example results in a failure to report on the cable attached to
port te2/0/3.
console#test copper-port tdr te2/0/3
Can’t perform the test on fiber ports
2CSPC4.XModular-SWUM204.book Page 1572 Friday, March 15, 2013 9:24 AM