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Cisco ONS 15310-CL and Cisco ONS 15310-MA Troubleshooting Guide, R7.0
Chapter 2 Alarm Troubleshooting
2.7.12 APSCNMIS
Caution Always use the supplied electrostatic discharge wristband when working with a powered ONS 15310-CL
or ONS 15310-MA system.
Step 2 If the fibers are correctly connected, verify that the protection-port channel fibers are physically
connected directly to the adjoining node protection-port channel fibers.
Step 3 If the alarm 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) in order to report a Service-Affecting (SA)
problem.
2.7.12 APSCNMIS
The APSCNMIS alarm is not used in the ONS 15310 platforms in this release. It is reserved for
development.
2.7.13 APSIMP
Default Severity: Minor (MN), Non-Service-Affecting (NSA)
SONET Logical Object: OCN
The APS Invalid Mode alarm occurs if a 1+1 protection group is not properly configured at both nodes
to send or receive the correct APS byte. A node that is either configured for no protection or is configured
for path protection protection does not send the right K2 APS byte anticipated by a system configured
for 1+1 protection. The 1+1 protect port monitors the incoming K2 APS byte and raises this alarm if it
does not receive the byte.
The alarm is superseded by an APSCM or APSMM alarm. It is not superseded by an AIS condition. It
clears when the port receives a valid code for 10 ms.
Clear the APSIMP Alarm
Step 1 Check the configuration of the other node in the 1+1 protection group. If the far end is not configured
for 1+1 protection, create the group. For procedures, refer to the “Turn Up Node” chapter in the
Cisco ONS 15310-CL and Cisco ONS 15310-MA Procedure Guide.
Step 2 If the other end of the group is properly configured or the alarm does not clear after you have provisioned
the group correctly, verify that the working ports and protect ports are cabled correctly.
Caution Always use the supplied electrostatic discharge wristband when working with a powered ONS 15310-CL
or ONS 15310-MA system.
Step 3 Ensure that both protect ports are configured for SONET.
Step 4 If the alarm 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).