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Cisco ONS 15310-CL and Cisco ONS 15310-MA Troubleshooting Guide, R7.0
Chapter2 Alarm Troubleshooting
2.7.137 LOGBUFR90
SONET Logical Object: STSTRM
A Loss of Frame alarm for an STS circuit termination indicates that the LOF has occurred at the
terminating point of the circuit (such as an OC-N port). It is similar to the “LOF (OCN)” alarm on
page 2-88.

Clear the LOF (STSTRM) Alarm

Step1 Complete the “Clear the LOF (OCN) Alarm” procedure on page 2-88.
Step2 If the alarm does not clear, log into the Technical Support Website at http://www.cisco.com/techsupport
for more information or call Cisco TAC (1 800 553-2447) in order to report a Service-Affecting (SA)
problem.
2.7.137 LOGBUFR90
Default Severity: Minor(MN), Non-Service-Affecting (NSA)
SONET Logical Object: SYSTEM
The Log Buffer Over 90 alarm indicates that the per-NE queue of incoming alarm, event, or update
capacity of 5000 entries is over 90 percent full. LOGBUFR90 will clear if CTC recovers. If it does not
clear, LOGBUFROVFL occurs.
Note LOGBUFR90 is an informational alarm and does not require troubleshooting.
2.7.138 LOGBUFROVFL
Default Severity: Minor(MN), Non-Service-Affecting (NSA)
SONET Logical Object: SYSTEM
The Log Buffer Overflow alarm indicates that the CTC per-NE queue of incoming alarm, event, or
updates, which has a capacity of 5000 entries, has overflowed. This happens only very rarely. However
if it does, you must restart the CTC session. It is likely that some updates will have been missed if this
alarm occurs.

Clear the LOGBUFROVFL Alarm

Step1 Restart the CTC session.
Step2 If the alarm does not clear, log into the Technical Support Website at http://www.cisco.com/techsupport
for more information or call Cisco TAC (1-800-553-2447).