Testing Interfaces; Sending Bert Patterns - Juniper JUNOSE 11.2.X PHYSICAL LAYER Configuration Manual

JunosE 11.2.x Physical Layer Configuration Guide

Testing Interfaces

Sending BERT Patterns

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host1(config-controll)#no shutdwon
host1(config-controll)#framing c-bit
host1(config-controll)#clock source internal module
host1(config-controll)#cablelength 220
host1#exit
To configure an E3 interface, use the controller e3 command in place of the controller
t3 command.
To configure HDLC channels on a T3 serial interface, issue the following commands:
host1(config)#controller t3 10/0
host1(config-controll)#exit
host1(config)#interface serial 10/0
host1(config-subif)#encapsulation ppp
host1(config-subif)#ip address 192.32.10.2 255.255.255.0
To configure fractional T3 on an interface, issue the following commands:
host1(config)#controller t3 10/0
host1(config-controll)#dsu mode 0
host1(config-controll)#dsu bandwidth 10000
host1(config-controll)#scramble
Testing interfaces allows you to troubleshoot problems and to check the quality of links
at various layers in the interface stack. The router supports the following test options:
Transmission of BERT patterns to remote devices
Local loopback—Loops the data back toward the router; on supported line modules,
also sends an alarm indication signal (AIS) out toward the network
Network loopback—Loops the data toward the network before the data reaches the
frame
Payload loopback—Loops the data toward the network after the framer processes the
data
Remote loopback—Provides the ability to:
Request that remote devices enter into loopback
Be placed in loopback by remote devices
The router can send BERT patterns from different layers in the interface stack on
frame-based T3 interfaces.
For a list of the modules that support bit error rate tests, see ERX Module Guide, Appendix
A, Module Protocol Support.
To send BERT patterns:
Select a controller.
1.
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