PHY Diagnostics Commands 277
PHY Diagnostics Commands
test copper-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.
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
book.book Page 277 Thursday, December 18, 2008 7:40 PM
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