Juniper JUNOSE 11.2.X MULTICAST ROUTING, Руководство по настройке

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Testing at the T3 Layer
To enable testing at the T3 layer:
1.
Change the clock source to internal.
host1(config-controll)# clock source internal module
2.
Configure one of the following tests:
•
Set the loopback to local to test the line without connecting to the network.
host1(config-controll)# loopback local
• Set the loopback to network to test the line connected to the network.
host1(config-controll)# loopback network line
3.
(Optional) Configure one of the following tests for remote loopback:
•
Set the loopback to remote to request that a remote device connected on a T3
interface enter into a loopback.
host1(config-controll)# loopback remote
•
Configure the T3 interface to enable or disable the ability to enter into a loopback
initiated by a remote device, as follows:
• Issue the equipment customer loopback command to enable the router to
enter into loopback when it receives an appropriate signal from the remote
device.
host1(config-controll)# equipment customer loopback
•
Issue the equipment network loopback command to disable the ability to enter
into loopback initiated by a remote device.
host1(config-controll)# equipment network loopback
4.
Configure the line to run bit error rate tests.
host1(config-controll)# bert pattern 2^15 time 20
bert
•
Use to enable bit error rate tests using the specified pattern on a channelized T3
interface.
•
Unlike other configuration commands, bert is not stored in NVRAM.
•
Specify one of the following test patterns:
•
0s —Repetitive test pattern of all zeros, 00000...
•
1s —Repetitive test pattern of all ones, 11111...
•
2^9 —Pseudorandom test pattern, 511 bits in length
•
2^11 —Pseudorandom test pattern, 2047 bits in length
•
2^15 —Pseudorandom test pattern, 32,767 bits in length
23 Copyright © 2010, Juniper Networks, Inc.
Chapter 1: Configuring Channelized T3 Interfaces