Cisco CTX2500 User Manual

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Cisco ONS 15310-MA SDH Troubleshooting Guide, Release 9.0
78-18663-01
Chapter 2 Alarm Troubleshooting
Alarm Procedures
Step 3 If the alarm does not clear, log into the Technical Support Website at
http://www.cisco.com/cisco/web/support/index.html for more information or call Cisco TAC
(1-800-553-2447).
2.7.20 AUTOSW-AIS-SNCP
Default Severity: Not Reported (NR), Non-Service-Affecting (NSA)
SDH Logical Objects: VCMON-HP, VCMON-LP
The Automatic Path Protection Switch Caused by an AIS condition indicates that automatic SNCP
switching occurred because of an AIS condition. If the SNCP is configured for revertive switching, it
reverts to the working path after the fault clears. The AIS also clears when the upstream trouble is
cleared.
Note This condition is only reported if the path protection is set up for revertive switching.
Generally, an AIS is a special SDH signal that tells the receiving node that the sending node has no valid
signal available to send. AIS is not considered an error. The AIS condition is raised by the receiving node
on each input when the node sees the signal 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 resolve the problem on
the upstream node.
Clear the AUTOSW-AIS-SNCP Condition
Step 1 Complete the “Clear the AIS Condition” procedure on page 2-20.
Step 2 If the condition does not clear, log into the Technical Support Website at
http://www.cisco.com/cisco/web/support/index.html for more information or call Cisco TAC
(1-800-553-2447).
2.7.21 AUTOSW-LOP-SNCP (VCMON-HP)
Default Severity: Not Alarmed (NA), Non-Service-Affecting (NSA)
SDH Logical Object: VCMON-HP
The Automatic Path Protection Switch Caused by LOP condition for the STS monitor (VCMON-HP)
condition indicates that automatic SNCP switching occurred because of the “AU-LOP” alarm on
page 2-91. If the SNCP 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.

Cisco CTX2500 Specifications

General

Brand	Cisco
Model	CTX2500
Category	Network Card
Language	English