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JUNOSe 11.1.x Physical Layer Configuration Guide
Testing at the T1 Layer
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:
To enable testing at the T1 layer:
1.
2.
t1 bert
NOTE: The CT3/T3-F0 line module supports only the 2^11, 2^15, and 2^20-O153
options.
26
Testing Interfaces
Use the no version to restore the default configuration, no loopback.
See loopback.
host1(config-controll)#t1 3,6-15,22,25-27 loopback local
Configure one of the following loopback tests.
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.
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:
0s Repetitive test pattern of all zeros, 00000...
1s Repetitive test pattern of all ones, 11111...
2^11 Pseudorandom test pattern, 2047 bits in length
2^15 Pseudorandom test pattern, 32,767 bits in length
2^20-O153 Pseudorandom test pattern, 1,048,575 bits in length
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