Cisco Catalyst 3560-X Command Reference Manual page 556

show cable-diagnostics tdr
Related Commands
Catalyst 3750-X and 3560-X Switch Command Reference
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Table 2-28 Fields Descriptions for the show cable-diagnostics tdr Command Output (continued)
Field Description
Pair length Location on the cable where the problem is, with respect to your switch. TDR can only
find the location in one of these cases:
The cable is properly connected, the link is up, and the interface speed is
•
1000 Mb/s.
The cable is open.
•
• The cable has a short.
Remote pair Name of the pair of wires to which the local pair is connected. TDR can learn about
the remote pair only when the cable is properly connected and the link is up.
Pair status The status of the pair of wires on which TDR is running:
• Normal—The pair of wires is properly connected.
Not completed—The test is running and is not completed.
•
• Not supported—The interface does not support TDR.
Open—The pair of wires is open.
•
Shorted—The pair of wires is shorted.
•
ImpedanceMis—The impedance is mismatched.
•
Short/Impedance Mismatched—The impedance mismatched or the cable is short.
•
• InProgress—The diagnostic test is in progress
This is an example of output from the show interface interface-id command when TDR is running:
Switch# show interface gigabitethernet1/0/2
gigabitethernet1/0/2 is up, line protocol is up (connected: TDR in Progress)
This is an example of output from the show cable-diagnostics tdr interface interface-id command when
TDR is not running:
Switch# show cable-diagnostics tdr interface gigabitethernet1/0/2
% TDR test was never issued on Gi1/0/2
If an interface does not support TDR, this message appears:
% TDR test is not supported on switch 1
Command
test cable-diagnostics tdr
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Chapter 2 Catalyst 3750-X and 3560-X Cisco IOS Commands
Description
Enables and runs TDR on an interface.
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