Command Reference Guide

246 ● loopback 3Com Router 5000 Family and Router 6000 Family
Command Reference
loopback
Purpose Use the loopback command to configure the loopback function of the CPOS
interface.
Use the undo loopback command to disable loopback.
Syntax loopback { local | remote }
undo loopback
Parameters local
Places the CPOS interface in local loopback.
remote
Places the CPOS interface in remote loopback.
Default By default, loopback is disabled.
Example Place CPOS 1/0/0 in remote line loopback.
<3Com > system-view
[3Com ] controller cpos 1/0/0
[3Com -Cpos1/0/0] loopback remote
View This command can be used in the following views:
■ CPOS Interface view
Description The CPOS module provides loopback of different depths that allows you to
troubleshoot the interfaces or connection cables.
In normal conditions, disable loopback.