Troubleshooting guide

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Cisco Broadband Local Integrated Services Solution Troubleshooting Guide
OL-5169-01
Chapter 8 Troubleshooting the Cisco Catalyst 6509
Troubleshooting Serial Lines
t1 t1-line-number bert pattern pattern interval time [unframed]
where:
• t1-line-number is 1–28.
• time is 1–14400 minutes.
• pattern is:
– 0s, repetitive test pattern of all zeros (as 00000...)
– 1s, repetitive test pattern of all ones (as 11111...)
– 2^11, pseudorandom test pattern (2,048 bits long)
– 2^15, pseudorandom O.151 test pattern (32,768 bits long).
– 2^20-O153, pseudorandom O.153 test pattern (1,048,575 bits long)
– 2^20-QRSS, pseudorandom QRSS O.151 test pattern (1,048,575 bits long)
– 2^23, pseudorandom O.151 test pattern (8,388,607 bits long)
– alt-0-1, repetitive alternating test pattern of zeros (0s) and ones (1s), as 01010101
Examples:
• Send a BER test pseudorandom pattern of 2^20 through T1 line 10 for 5 minutes.
This example is for a T1, numbered 10, on a CT3 line card in slot 1:
Router(config)# controller T3 1/0/0
Router(config-controller)# t1 10 bert pattern 2^20 interval 5 unframed
• Send a repetitive pattern of all ones through T1 line 10 for 14400 minutes (240 hours).
This example is for a T1, numbered 10, on a CT3 line card in slot 1:
Router(config)# controller T3 1/0/0
Router(config-controller)# t1 10 bert pattern 1s interval 14400 unframed
Note You can terminate a BER test during the specified test period with the no t1 bert command.
Viewing the Results of a BER Test
You can view the results of a BER test using the controller command:
show controllers T3 slot/port-adapter/port/t1-line-number
where t1-line-number is 1–28.
You can view the results of a BER test at the following times:
• After you terminate the test using the no t1 bert command
• After the test runs completely
• Anytime during the test (in real time)
You can view information about a BER test using the controller command:
show controllers T3 slot/subslot/port
where t1-line-number is 1–28.