Digisol DG-FS4528P, Management Manual

Page: 688 / 973

C
HAPTER
28 | Interface Commands
– 688 –
test cable-
diagnostics tdr
interface
This command performs cable diagnostics on the specified port to diagnose
any cable faults (short, open, etc.) and report the cable length.
S
YNTAX
test cable-diagnostics tdr interface interface
interface
ethernet unit / port
unit - Unit identifier. (Range: 1)
port - Port number. (Range: 1-28)
C
OMMAND
M
ODE
Privileged Exec
C
OMMAND
U
SAGE
Cable diagnostics are performed using Time Domain Reflectometry
(TDR) test methods.
This cable test is only accurate for cables 7 - 140 meters long.
The test takes approximately 5 seconds. The switch displays the results
of the test immediately upon completion, including common cable
failures, as well as the status and approximate length of each cable
pair.
Potential conditions which may be listed by the diagnostics include:
OK: Correctly terminated pair
Open: Open pair, no link partner
Short: Shorted pair
Impedance mismatch: Terminating impedance is not in the
reference range.
Ports are linked down while running cable diagnostics.
E
XAMPLE
Console#test cable-diagnostics tdr interface ethernet 1/1
Port Type Link Status Pair A (meters) Pair B (meters) Last Update
-------- ---- ----------- ---------------- ---------------- -------------------
Eth 1/ 1 FE Up OK (0) OK (0) 2001-01-01 08:25:32
Console#