Users Guide

Monitoring and Logging System Information 411
Command Purpose
test copper-port tdr
interface
Perform the Time Domain Reflectometry (TDR) test to
diagnose the quality and characteristics of a copper cable
attached to the specified port. SFP, SFP+, and QSFP
cables with passive copper assemblies are not capable of
performing TDR tests.
CAUTION: Issuing the test copper-port tdr command
will bring the interface down.
NOTE: To ensure accurate measurements, disable all Green
Ethernet modes (EEE and energy-detect mode) on the port
before running the test.
The interface is specified in unit/slot/port format. For
example 1/0/3 is GbE interface 3 on unit 1 of the stack.
show copper-ports tdr
[interface]
Display the diagnostic information collected by the test
copper-port tdr command for all copper interfaces or a
specific interface.
show fiber-ports optical-
transceiver [interface]
Display the optical transceiver diagnostics for all fiber
ports. Include the interface option to show information for
the specified port.