Juniper JUNOSE 11.2.X MULTICAST ROUTING, Configuration Manual

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Sending BERT Patterns
The router can send BERT patterns from different layers in the interface stack. For a list
of the modules that support bit error rate tests (BERTs), see
ERX Module Guide, Appendix
A, Module Protocol Support .
To send BERT patterns:
1.
Select a controller.
2.
Configure a specific layer in the interface to generate BERT patterns.
For information about BERT patterns, see “References” on page 113.
path ds1|e1 bert
•
Use to enable bit error rate tests using the specified pattern at the T1/E1 over
SONET/SDH VT layer.
•
Unlike other configuration commands, “path ds1|e1 bert” on page 140 is not stored in
NVRAM.
•
Specify one of the following options:
•
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
•
Specify the duration of the test in the range 1–1440 minutes.
•
Optionally, specify the unframed keyword to overwrite the framing bits.
•
Example
host1(config-controll)# path 12 ds1 1/3/4 bert pattern 2^11 interval 10 unframed
•
Use the no version to stop the test that is running.
•
See path ds1|e1 bert.
path ds3 bert
•
Use to enable bit error rate tests using the specified pattern at the T3 layer.
•
Unlike other configuration commands, “path ds3 bert” on page 140 is not stored in
NVRAM.
•
Specify one of the following options:
•
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
Copyright © 2010, Juniper Networks, Inc. 140
JunosE 11.2.x Physical Layer Configuration Guide