CLI Reference Guide

Chapter 11 | Interface Commands
– 420 –
■
Impedance mismatch: Terminating impedance is not in the reference
range.
Example
Console#show cable-diagnostics interface ethernet 1/21
Cable Diagnostics on interface Ethernet 1/21:
Cable OK with accuracy 10 meters.
Pair A OK, length 0 meters
Pair B OK, length 0 meters
Pair C OK, length 7 meters
Pair D Open, length 2 meters
Last Update 0n 2019-05-31 09:16:57
Console#
show loop internal This command shows the results of a loop back test.
Syntax
show loop internal interface [interface]
interface
ethernet unit/port
unit - Unit identifier. (Range: 1)
port - Port number. (1-54)
Command Mode
Privileged Exec
Example
Console#show loop internal interface ethernet 1/21
Port Test Result Last Update
-------- -------------- --------------------
Eth 1/1 Succeeded 2019-05-15 09:15:02
Console#