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108 CHAPTER 7: PHY DIAGNOSTICS COMMANDS
Example
The following example results in a report on the cable attached to port
g3.
show copper-ports
tdr
The show copper-ports tdr Privileged EXEC mode command displays
information on the last Time Domain Reflectometry (TDR) test performed
on copper ports.
Syntax
show copper-ports tdr [interface]
Parameters
■ interface — A valid Ethernet port. Elana
Default Configuration
This command has no default configuration.
Command Mode
Privileged EXEC mode
User Guidelines
The maximum length of cable for the TDR test is 120 meters.
Example
The following example displays information on the last TDR test
performed on all copper ports.
Console#
test copper-port tdr
g3
Cable is open at 64 meters
Console#
test copper-port tdr
g3
Can’t perform this test on fiber ports
Console#
show copper-ports tdr