Cisco ONS 15454 Troubleshooting Manual page 246

2.7.32 AUTOSW-LOP (STSMON)
This condition is only reported if the path protection is set up for revertive switching.
Note
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
Complete the
Step 1
If the condition does not clear, log into the Technical Support Website at
Step 2
http://www.cisco.com/techsupport for more information or call Cisco TAC 1 800 553-2447.
2.7.32 AUTOSW-LOP (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
page
after the fault clears.
This condition is only reported if the path protection is set up for revertive switching.
Note
Clear the AUTOSW-LOP (STSMON) Condition
Complete the
Step 1
If the condition does not clear, log into the Technical Support Website at
Step 2
http://www.cisco.com/techsupport for more information or call Cisco TAC 1 800 553-2447.
2.7.33 AUTOSW-LOP (VT-MON)
The AUTOSW-LOP alarm for the VT monitor (VT-MON) indicates that automatic path protection
switching occurred because of the
for revertive switching, it reverts to the working path after the fault clears.
Cisco ONS 15454 Troubleshooting Guide, R8.5
2-52
"Clear the AIS Condition" procedure on page
Default Severity: Not Alarmed (NA), Non-Service-Affecting (NSA)
SONET Logical Object: STSMON
2-155. If the path protection is configured for revertive switching, it reverts to the working path
"Clear the LOP-P Alarm" procedure on page
Default Severity: Not Alarmed (NA), Service-Affecting (SA)
SONET Logical Object: VT-MON
2-155.
"LOP-V" alarm on page 2-156. If the path protection is configured
Chapter 2 Alarm Troubleshooting
2-37.
"LOP-P" alarm on
November 2009