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Cisco ASR 1000 Series Aggregation Services Routers SIP and SPA Software Configuration Guide
OL-14127-08
Chapter 20 Troubleshooting the Serial SPAs
Using Bit Error Rate Tests
Router# show controllers serial T3 1/0/0
T3 1/0/0 is up.
C2T3 H/W Version : 3, C2T3 ROM Version : 0.79, C2T3 F/W Version : 0.29.0
T3 1/0/0 T1 1
No alarms detected.
Clock Source is internal.
BERT test result (running)
Test Pattern : 2^15, Status : Sync, Sync Detected : 1
Interval : 5 minute(s), Time Remain : 5 minute(s)
Bit Errors(Since BERT Started): 6 bits,
Bits Received(Since BERT start): 8113 Kbits
Bit Errors(Since last sync): 6 bits
Bits Received(Since last sync): 8113 Kbits
Interpreting BER Test Results
Table 20-9 explains the output of the show controllers command.
Ta b l e 20-9 Interpreting BER Test Results
Field Description
BERT test result (running) Indicates the current state of the test. In this case, “running”
indicates that the BER test is still in progress. After a test is
completed, “done” is displayed.
Test Pattern : 2^15, Status : Sync, Sync
Detected : 1
Indicates the test pattern you selected for the test (2^15), the
current synchronization state (Sync), and the number of times
synchronization has been detected during this test (1).
Interval : 5 minute(s), Time Remain :
5
minute(s)
Indicates the time the test takes to run and the time remaining
for the test to run.
If you terminate a BER test, you receive a message similar to
the following:
Interval : 5 minute(s), Time Remain : 2 minute(s)
(unable to complete)
“Interval: 5 minutes” indicates the configured run time for the
test. “Time Remain : 2 minutes” indicates the time remaining
in the test prior to termination. “(unable to complete)”
signifies that you interrupted the test.
Bit Errors(Since BERT Started): 6 bits
Bits Received(Since BERT start):
8113
Kbits
Bit Errors(Since last sync): 6 bits
Bits Received(Since last sync):
8113
Kbits
These four lines show the bit errors that have been detected
versus the total number of test bits that have been received
since the test started and since the last synchronization was
detected.