Troubleshooting guide

8-15
Cisco Broadband Local Integrated Services Solution Troubleshooting Guide
OL-5169-01
Chapter 8 Troubleshooting the Cisco Catalyst 6509
Troubleshooting Serial Lines
Examples:
• This example is for a CT3 line card:
Router# show controllers 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 : 2^11, 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
Table 8-4 explains the output of the preceding command, starting at the arrow:
Note Unless unframed is selected, the BER test runs over the configured framing option for the specified T1
line (ESF or SF). Before running a BER test, you should configure the framing option appropriate to
your application.
Table 8-4 Interpreting BER Test Results
Output Display Line Explanation
BERT test result (running)
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 : 2^11, Status : Sync,
Sync Detected : 1
The test pattern you selected for the test (2^11), 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)
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)” means 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.