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Testing at the T1 Layer
t1 bert
Copyright © 2010, Juniper Networks, Inc.
payload—Loops the data toward the network after the framer processes the data
remote—Sends a far end alarm code in the C-bit framing, as defined in ANSI T1.404,
to notify the remote end to activate or (when you use the no version) deactivate the
line loopback
NOTE: Remote loopback is available only on channelized T3 interfaces configured to
use C-bit framing.
Example
host1(config-controll)#loopback local
Use the no version to restore the default configuration, no loopback.
See loopback.
The T1 channel testing commands enable you to specify testing parameters for a single
channel, multiple individual channels, ranges of channels, or any combination of the three
types of specifications. For example:
host1(config-controll)#t1 3,6-15,22,25-27 loopback local
To enable testing at the T1 layer:
Configure one of the following loopback tests.
1.
Set the loopback to local to test the line without connecting to the network.
host1(config-controll)#t1 2 loopback local
Set the loopback to network to test the line connected to the network.
host1(config-controll)#t1 2 loopback network line
Set the loopback to remote-loopback to enable acceptance of loopback
commands issued from a remote router.
host1(config-controll)#t1 2 remote-loopback
Configure the line to run bit error rate tests.
2.
host1(config-controll)#t1 2 bert pattern 2^11 time 10 unframed
Use to enable bit error rate tests using the specified pattern on a T1 interface.
Unlike other configuration commands, bert is not stored in NVRAM.
Specify one of the following test patterns:
Chapter 1: Configuring Channelized T3 Interfaces
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