Juniper JUNOSE 10.0.X PHYSICAL LAYER, Руководство по настройке

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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
■
2^20 —Pseudorandom test pattern, 1,048,575 bits in length
■
2^20-QRSS —Pseudorandom QRSS test pattern, 1,048,575 bits in length
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Testing Interfaces
JUNOSe 10.0.x Physical Layer Configuration Guide