Logbufrovfl; Lop-P - Cisco ONS 15327 User Documentation

Chapter 14 Alarm Troubleshooting
Log back into the ONS 15327. The LOGBUFR90 alarm should clear after an approximately one minute
Step 3
delay.
Exiting CTC and logging back into the ONS 15327 removes any cleared alarms from the log buffer and
resynchronizes the alarm pane to show any alarms that were not displayed as a result of a full log buffer.
Note

14.4.72 LOGBUFROVFL

•
The log buffer overflow (LOGBUFROVFL) alarm means the memory buffer is full, and any new alarms
occurring on the ONS 15327 do not display on the CTC alarms pane. The CTC receives alarms from all
ONS nodes on the network, even if the CTC is set to the node or card-level view.
Procedure: Clear the LOGBUFROVFL Alarm
Step 1 Click the close button on the upper-right corner of the CTC window.
Step 2 Click the close button on the upper-right corner of the browser window.
Log back into the ONS 15327. The LOGBUFROVFL alarm should clear after an approximately one
Step 3
minute delay.
Exiting CTC and logging back into the ONS 15327 removes any cleared alarms from the log buffer and
resynchronizes the alarm pane to show any alarms not displayed as a result of a full log buffer.
Note

14.4.73 LOP-P

•
This loss of pointer path (LOP-P) alarm indicates a loss of pointer at the path level. LOP occurs when
valid H1/H2 pointer bytes are missing from the SONET overhead. Receiving equipment monitors the
H1/H2 pointer bytes to locate the SONET payload. An LOP alarm means that eight, nine, or ten
consecutive frames do not have valid pointer values. The alarm clears when three consecutive valid
pointers are received.
One of the conditions that can cause this alarm is a transmitted STSc circuit that is smaller than the
provisioned STSc. This condition causes a mismatch of the circuit type on the concatenation facility. For
example, if an STS-3c or STS-1 is sent across a circuit provisioned for STS-12c, a LOP alarm occurs.
June 2002
Checking the AutoDelete Cleared Alarms checkbox on the Alarms panel helps prevent log buffer
overflow.
Major, Service-Affecting
Checking the AutoDelete Cleared Alarms checkbox on the Alarms panel helps prevent log buffer
overflow.
Critical, Service-Affecting
Cisco ONS 15327 User Documentation, R3.3
Alarm Procedures
14-53