Cisco ONS 15454 - 2.7.9 APC-END; 2.7.10 APC-OUT-OF-RANGE; 2.7.11 APC-WRONG-GAIN; 2.7.12 APSB

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Cisco ONS 15454 Troubleshooting Guide, R8.5
November 2009
Chapter 2 Alarm Troubleshooting
2.7.9 APC-END
2.7.9 APC-END
For information about this alarm or condition, refer to the “Alarm Troubleshooting” chapter in the
Cisco ONS 15454 DWDM Troubleshooting Guide. This guide discusses all DWDM alarms.
2.7.10 APC-OUT-OF-RANGE
For information about this alarm or condition, refer to the “Alarm Troubleshooting” chapter in the
Cisco ONS 15454 DWDM Troubleshooting Guide. This guide discusses all DWDM alarms.
2.7.11 APC-WRONG-GAIN
For information about this alarm or condition, refer to the “Alarm Troubleshooting” chapter in the
Cisco ONS 15454 DWDM Troubleshooting Guide. This guide discusses all DWDM alarms.
2.7.12 APSB
Default Severity: Minor (MN), Non-Service-Affecting (NSA)
SONET Logical Object: OCN
The APS Channel Byte Failure alarm occurs when LTE detects protection switching byte failure or an
invalid switching code in the incoming APS signal. Some older SONET not manufactured by Cisco send
invalid APS codes if they are configured in a 1+1 protection group with newer SONET nodes, such as
the ONS 15454. These invalid codes cause an APSB alarm on an ONS 15454.
Step 1 Use an optical test set to examine the incoming SONET overhead to confirm inconsistent or invalid
K bytes. For specific procedures to use the test set equipment, consult the manufacturer. If corrupted
K bytes are confirmed and the upstream equipment is functioning properly, the upstream equipment
might not interoperate effectively with the ONS 15454.
Step 2 If the alarm does not clear and the overhead shows inconsistent or invalid K bytes, you could need to
replace the upstream cards for protection switching to operate properly. Complete the “Physically
Replace a Traffic Card” procedure on page 2-273.
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.
2.7.13 APSCDFLTK
Default Severity: Minor (MN), Non-Service-Affecting (NSA)
SONET Logical Object: OCN
The APS Default K Byte Received alarm occurs during bidirectional line switched ring (BLSR)
provisioning or when a BLSR is not properly configured, for example, when a four-node BLSR has one
node configured as a path protection configuration. When this misconfiguration occurs, a node in a path