Cisco 10000 Series Troubleshooting Guide

6-5
Cisco 10000 Series Router Troubleshooting Guide
OL-0439-02
Chapter 6 Troubleshooting Serial Lines
Using Bit Error Rate Tests
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.
Examples follow:
• The example that follows 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 6-2 explains the output of the preceding command, starting at the arrow:
Table 6-2 Interpreting BER Test Results
Output Display Line Explanation
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 : 2^11, Status : Sync,
Sync Detected : 1
Indicates 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).

Cisco 10000 Series Specifications

General

Brand	Cisco
Model	10000 Series
Category	Network Router
Language	English