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path ds3 loopback
path ds3 t1 loopback
Enabling Remote Loopback Testing
Copyright © 2010, Juniper Networks, Inc.
Use to configure a loopback at the T3 layer.
Specify one of the following options:
local—Loops the data back toward the router; on supported line modules, also sends
an alarm indication signal (AIS) out toward the network.
network { line | payload }
Specify the line keyword to loop the data toward the network before the data
reaches the framer.
Specify the payload keyword to loop the data toward the network after the framer
has processed the data.
Example
host1(config-controll)#controller sonet 5/0
host1(config-controll)#path 12 ds3 1 loopback local
Use the no version to turn off the loopback.
See path ds3 loopback.
Use to configure a loopback at the T1 over T3 layer.
Specify one of the following options:
local—Loops the router output data back toward the router at the T1 framer; on
supported line modules, also sends an alarm indication signal (AIS) out toward the
network.
network { line | payload }
Specify the line keyword to loop the data back toward the network before the T1
framer and automatically set a local loopback at the HDLC controllers.
Specify the payload keyword to loop the payload data back toward the network
at the T1 framer and automatically set a local loopback at the HDLC controllers.
Example
host1(config-controll)#path 12 ds3 2 t1 14 loopback network line
Use the no version to clear the local loopback configuration.
See path ds3 t1 loopback.
You can configure the router to request that compatible devices connected at the
following layers enter into a loopback:
T1 over SONET/SDH VT layer
T1 over T3 layer
Chapter 4: Configuring Channelized OCx/STMx Interfaces
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