2-37
Cisco ONS 15454 Troubleshooting Guide, R8.5
November 2009
Chapter 2 Alarm Troubleshooting
2.7.2 AIS-L
Clear the AIS Condition
Step 1 Determine whether there are alarms on the upstream nodes and equipment, especially the “LOS (OCN)”
alarm on page 2-164, or if there are out-of-service (OOS,MT or OOS,DSBLD) ports.
Step 2 Clear the upstream alarms using the applicable procedures in this chapter.
Step 3 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.
2.7.2 AIS-L
Default Severity: Not Reported (NR), Non-Service-Affecting (NSA)
SONET Logical Objects: EC1, OCN
DWDM Logical Object: TRUNK
The AIS Line condition indicates that this node is detecting line-level AIS in the incoming signal. This
alarm is secondary to another alarm occurring simultaneously in an upstream node.
This condition can also be raised in conjunction with the “TIM-S” alarm on page 2-246 if AIS-L is
enabled.
Note ONS 15454 DS-3 terminal (inward) loopbacks do not transmit an AIS in the direction away from the
loopback. Instead of AIS, a continuance of the signal transmitted into the loopback is provided. A
DS3/EC1-48 card can be provisioned to transmit AIS for a terminal loopback.
Clear the AIS-L 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.
2.7.3 AIS-P
Default Severity: Not Reported (NR), Non-Service-Affecting (NSA)
SONET Logical Objects: STSMON, STSTRM
The AIS Path condition means that this node is detecting AIS in the incoming path. This alarm is
secondary to another alarm occurring simultaneously in an upstream node.
Clear the AIS-P Condition
Step 1 Complete the “Clear the AIS Condition” procedure on page 2-37.
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