Users Guide

Command History
This guide is platform-specic. For command information about other platforms, refer to the relevant Dell
Networking OS Command Line Reference Guide.
The following is a list of the Dell Networking OS version history for this command.
Version Description
9.8(0.0P5) Introduced on the S4048-ON.
9.8(0.0P2) Introduced on the S3048-ON.
9.7.0.0 Introduced on the S5000.
8.3.19.0 Introduced on the S4820T.
8.3.11.1 Introduced on the Z9000.
8.3.7.0 Introduced on the S4810.
8.2.1.0 Introduced on the E-Series ExaScale.
7.7.1.0 Introduced on the S-Series.
7.6.1.0 Introduced on the C-Series.
6.1.1.0 Introduced.
Usage Information If the TDR test has not been run, an error message is generated:
%Error: Please run the TDR test first
The following describes the TDR test status.
Status Denition
OK Status:
Terminated
TDR test is complete, no fault is detected on the cable, and the test is terminated.
Length: 92 (+/- 1)
meters, Status:
Shorted
A short is detected on the cable. The location, in this Example is 92 meters. The
short is accurate to plus or minus one meter.
Length: 93 (+/- 1)
meters, Status:
Open
An opening is detected on the cable. The location, in this Example is 93 meters.
The open is accurate to plus or minus one meter.
Status: Impedance
Mismatch
There is an impedance mismatch in the cables.
Example
Dell#show tdr gigabitethernet 10/47
Time since last test: 00:00:02
Pair A, Length: OK Status: Terminated
Pair B, Length: 92 (+/- 1) meters, Status: Short
Pair C, Length: 93 (+/- 1) meters, Status: Open
Pair D, Length: 0 (+/- 1) meters, Status: Impedance Mismatch
Related Commands tdr-cable-test — runs the TDR test.
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Interfaces