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DELL CONFIDENTIAL – PRELIMINARY 9/13/06 – FOR PROOF ONLY
PHY Diagnostics Commands
231
PHY
Diagnostics
Co
mm
ands
t
e
st
copp
e
r
-
port
tdr
The
test copper-port tdr
Privileged EXEC mode command uses Time Domain Reflectometry
(TDR) technology to diagnose the quality and characteristics of a copper cable attached to a
port.
Syntax
test copper-port tdr
interface
•
interface
— A valid Ethernet port. (Full syntax:
unit/port
)
Default Configuration
This command has no default configuration.
Command Mode
Privileged EXEC mode
User Guidelines
•
The port to be tested should be shut down during the test, unless it is a combination port
with fiber port active.
•
The maximum length of the cable for the TDR test is 120 meter.
Examples
The following example results in a report on the cable attached to port 1/e3.
s
h
o
w
copp
e
r
-
ports
tdr
The
show copper-ports tdr
User EXEC mode command displays information on the last Time
Domain Reflectometry (TDR) test performed on copper ports.
Console#
test copper-port tdr
1/e3
Cable is open at 64 meters
Console#
test copper-port tdr
2/e3
Can’t perform this test on fiber ports