Cisco catalyst 3750 Command Reference Manual page 532

show cable-diagnostics tdr
This is an example of output from the show cable-diagnostics tdr interface interface-id command on
a Catalyst 3750G-24PS or 3750G-48PS switch:
Switch# show cable-diagnostics tdr interface gigabitethernet1/0/2
TDR test last run on: March 01 20:15:40
Interface Speed Local pair Pair length
--------- ----- ---------- ------------------ ----------- --------------------
Gi1/0/2
Table 2-22
Table 2-22
Field
Interface
Speed
Local pair
Pair length
Remote pair
Pair status
This is an example of output from the show interfaces interface-id command when TDR is running:
Switch# show interfaces 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
Catalyst 3750 Switch Command Reference
2-502
auto Pair A 0 +/- 4 meters
Pair B 0 +/- 4 meters
Pair C 0 +/- 4 meters
Pair D 0 +/- 4 meters
lists the descriptions of the fields in the show cable-diagnostics tdr command output.
Fields Descriptions for the show cable-diagnostics tdr Command Output
Description
Interface on which TDR was run.
Speed of connection.
Name of the pair of wires that TDR is testing on the local interface.
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.
•
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.
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
•
Chapter 2 Catalyst 3750 Switch Cisco IOS Commands
Remote pair Pair status
N/A Open
N/A Open
N/A Open
N/A Open
OL-8552-07