Cisco ONS 15454 - Clear the AUTOSW-AIS Condition; 2.7.32 AUTOSW-LOP (STSMON); Clear the AUTOSW-LOP (STSMON) Condition; 2.7.33 AUTOSW-LOP (VT-MON)

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Cisco ONS 15454 Troubleshooting Guide, R8.5
November 2009
Chapter 2 Alarm Troubleshooting
2.7.32 AUTOSW-LOP (STSMON)
Note This condition is only reported if the path protection is set up for revertive switching.
Generally, any AIS is a special SONET signal that communicates to the receiving node when the transmit
node does not send a valid signal. AIS is not considered an error. It is raised by the receiving node on
each input when it detects the AIS instead of a real signal. In most cases when this condition is raised,
an upstream node is raising an alarm to indicate a signal failure; all nodes downstream from it only raise
some type of AIS. This condition clears when you resolved the problem on the upstream node.
Clear the AUTOSW-AIS Condition
Step 1 Complete the “Clear the AIS Condition” procedure on page 2-37.
Step 2 If the condition 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.
2.7.32 AUTOSW-LOP (STSMON)
Default Severity: Not Alarmed (NA), Non-Service-Affecting (NSA)
SONET Logical Object: STSMON
The Automatic Path Protection Switch Caused by LOP condition for the STS monitor (STSMON)
indicates that automatic path protection switching occurred because of the “LOP-P” alarm on
page 2-155. If the path protection is configured for revertive switching, it reverts to the working path
after the fault clears.
Note This condition is only reported if the path protection is set up for revertive switching.
Clear the AUTOSW-LOP (STSMON) Condition
Step 1 Complete the “Clear the LOP-P Alarm” procedure on page 2-155.
Step 2 If the condition 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.
2.7.33 AUTOSW-LOP (VT-MON)
Default Severity: Not Alarmed (NA), Service-Affecting (SA)
SONET Logical Object: VT-MON
The AUTOSW-LOP alarm for the VT monitor (VT-MON) indicates that automatic path protection
switching occurred because of the “LOP-V” alarm on page 2-156. If the path protection is configured
for revertive switching, it reverts to the working path after the fault clears.