loopback

This command specifies loopback on the current T1 WAN interface.

Syntax

loopback <traffic source> <loopback location>
loopback <traffic source> <loopback location> <timeout>

Command	Description
<traffic source>	Defines the traffic source to be looped back: ‘remote’ – loopback ingress traffic. ‘local’ – loopback egress traffic.
<loopback location>	Defines where the loop is performed in the T1 WAN Interface: ‘line’ – loop is done in the csu.
<timeout>	On the local loopback only. Specifies the timeout (in seconds) after the local loopback releases. Default timeout is 180 seconds.

Command

Description

Defines the traffic source to be looped back:

‘remote’ – loopback ingress traffic.

‘local’ – loopback egress traffic.

Defines where the loop is performed in the T1 WAN Interface:

‘line’ – loop is done in the csu.

On the local loopback only.

Specifies the timeout (in seconds) after the local loopback releases. Default timeout is 180 seconds.

Default

By default, there is no loopback.

Command Mode

Privileged User

Example

This example set the remote line loopback on T1 Port 0/0.

(conf-if-t1 0/0)# loopback remote line