HP 7000 dl Router manual Copyright 2005 Hewlett-Packard Development Company, L.P 524

SROS Command Line Interface Reference Guide DSX-1 Interface Configuration Command Set

loopback network [line payload]

Use the loopback network command to initiate a loopback on the interface toward the network. Use the no form of this command to deactivate the loopback.

Syntax Description

line	Initiates a metallic loopback of the physical T1 network interface
payload	Initiates a loopback of the T1 framer (CSU portion) of the T1 network interface

Default Values

No default necessary for this command.

Command Modes

(config-t1 1/1)#	T1 or DSX-1 Interface Configuration Mode required.
(config-t1 1/2)#

Functional Notes

The following diagram depicts the difference between a line and payload loopback.

DS1

NI CSU

T1 Network Interface

Payload Loopback

Line Loopback

Usage Examples

The following example initiates a payload loopback of the DSX-1 interface:

(config)#interface t1 1/2

(config-t1 1/2)#loopback network payload

5991-2114 © Copyright 2005 Hewlett-Packard Development Company, L.P. 524