CLI Reference Guide

PHY Diagnostics Commands 1521
70
PHY Diagnostics Commands
Dell Networking N2000/N3000/N4000 Series Switches
This chapter explains the following commands:
show copper-ports tdr
Use the show copper-ports tdr command in Privileged EXEC mode to display
the stored information regarding cable lengths.
Syntax
show copper-ports tdr [ interface ]
• interface — A valid Ethernet port. The full syntax is unit / port.
Default Configuration
This command has no default configuration.
Command Mode
Privileged EXEC mode, Configuration mode and all Configuration submodes
User Guidelines
The copper-related commands do not apply to the stacking or 10GBaseT
ports associated with these plug-in modules.
The maximum length of the cable for the Time Domain Reflectometry
(TDR) test is 120 meters. Disable green-mode on the port in order to obtain
accurate results.
Example
The following example displays the last TDR tests on all ports.
show copper-ports tdr test copper-port tdr
show fiber-ports optical-transceiver
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