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Cisco ONS 15310-CL and Cisco ONS 15310-MA Troubleshooting Guide, R7.0
Chapter 2 Alarm Troubleshooting
2.7.14 APS-INV-PRIM
2.7.14 APS-INV-PRIM
Default Severity: Minor (MN), Non-Service-Affecting (NSA)
SONET Logical Object: OCN
The Optimized 1+1 APS Primary Facility condition occurs on OC-N ports in an optimized 1+1
protection system if the incoming primary section header does not indicate whether it is primary or
secondary.
Note APS-INV-PRIM is an informational condition and does not require troubleshooting. If the APS switch
is related to other alarms, troubleshoot these alarms as necessary using the procedures in this chapter.
2.7.15 APSMM
Default Severity: Minor (MN), Non-Service-Affecting (NSA)
SONET Logical Object: OCN
An APS Mode Mismatch failure alarm occurs on OC-3 ports when there is a mismatch of the protection
switching schemes at the two ends of the span, such as being bidirectional at one end and unidirectional
at the other. Each end of a span must be provisioned the same way: bidirectional and bidirectional or
unidirectional and unidirectional.
If one end is provisioned for 1+1 protection switching and the other is provisioned for path protection
switching, an APSMM alarm occurs on the ONS 15310-CL or ONS 15310-MA that is provisioned for
1+1 protection switching.
Clear the APSMM Alarm
Step 1 For the reporting system, in node view verify the protection scheme provisioning by completing the
following steps:
a. In node view, click the Provisioning > Protection tabs.
b. Click the 1+1 protection group configured for the OC-3 or OC-12 ports.
The chosen protection group is the protection group that is optically connected (with data
communication channel [DCC] connectivity) to the far end.
Step 2 Click Edit.
Record whether the Bidirectional Switching check box is checked.
Step 3 Click OK in the Edit Protection Group dialog box.
Step 4 Log into the far-end node and verify that the OC-3 or OC-12 port 1+1 protection group is provisioned.
Step 5 Verify that the Bidirectional Switching check box matches the checked or unchecked condition of the
box recorded in Step 1. If not, change it to match.
Step 6 Click Apply.
Step 7 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).