Chapter 5 Troubleshooting
High BER/Major
Definition: High threshold Bit Error Rating (BER). This alarm is the result of an average error rate of 1 bit per 1000 for 10 seconds. The alarm severity is Major.
Indication: The alarm is indicated using the show controllers command from the CLI. For more information, refer to "Monitoring Traffic" on page 79.
Corrective Actions:
•Check the physical integrity of the E1/T1 line.
•If regenerators are used, check the integrity of the regenerators.
•Use loopbacks to help pinpoint the cause of the alarm condition. For information on using loopbacks, refer to "Using Loopbacks" on page 83.
Note: After clearing the condition causing the High BER/Major alarm, the module continues to indicate a High BER/Major condition for approximately
11 seconds.
RAI/Yellow
Definition: Remote Alarm Indication, caused by the remote Rx line being down. The alarm severity is Major.
Indication: The alarm is indicated when the ALM LED lights or by using the show controllers command from the CLI. For more information, refer to "Monitoring Traffic" on page 79.
Corrective Action:
•Check your configuration (for example, framing) to verify that it matches the configuration of the remote end.
AIS/Blue
Definition: Alarm Indication Signal. The remote module is not sending data, probably due to an interface shutdown or a rebooting module. The alarm severity is Major.
Indication: The alarm is indicated when the ALM LED lights or by using the show controllers command from the CLI. For more information, refer to "Monitoring Traffic" on page 79.
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