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Sending BERT Patterns
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.
- host1(config)#controller t3 3/2
- Configure a specific layer in the interface to generate
BERT patterns.
- host1(config-controll)#bert pattern 2^11 interval
10
For information about BERT patterns,
see References.
bert
- Use to enable bit error rate tests using the specified
pattern on a 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
-
2^23—Pseudorandom test
pattern, 8,388,607 bits in length
-
alt-0-1—Repetitive alternating
test pattern of zeros and ones, 01010101...
- Specify the duration of the test in the range 1–1440
minutes.
- Example
- host1(config-controll)#bert pattern 2^11 interval
10
- Use the no version to stop
the test that is running.
- See bert.
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