Version 8.2.1.0 Introduced on the E-Series ExaScale.
Version 7.7.1.0 Introduced on the S-Series.
Version 7.6.1.0 Introduced on the C-Series.
Version 6.1.1.0 Introduced on the E-Series.
Usage 
Information
The interface must be enabled to run the test or an error message is generated:
FTOS#tdr-cable-test gigabitethernet 5/2
%Error: Interface is disabled GI 5/2
The C-Series and S-Series do not generate log messages is generated when the link flaps 
down/up during TDR tests. The E-series, does produce these log messages.
Related 
Commands
show tdr – displays the results of the TDR test.
show tdr
Display the TDR test results.
C-Series, E-Series, S-Series, S4810
Syntax
show tdr interface
Parameters
interface
Enter the keyword GigabitEthernet followed by the slot/port 
information for the 100/1000 Ethernet interface.
Defaults none
Command Modes EXEC
Command History
Version 8.3.7.0 Introduced on the S4810.
Version 8.2.1.0 Introduced on the E-Series ExaScale.
Version 7.7.1.0 Introduced on the S-Series.
Version 7.6.1.0 Introduced on the C-Series.
Version 6.1.1.0 Introduced.
Usage 
Information
If the TDR test has not been run, an error messages is generated:
%Error: Please run the TDR test first
The following describes the TDR test status.
764