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Cisco ONS 15454 Troubleshooting Guide, R8.5
November 2009
Chapter 2 Alarm Troubleshooting
2.7.107 FAPS
Clear the FAN Alarm
Step 1 Determine whether the air filter needs replacement. Complete the “Inspect, Clean, and Replace the
Reusable Air Filter” procedure on page 2-278.
Step 2 If the filter is clean, complete the “Remove and Reinsert a Fan-Tray Assembly” procedure on
page 2-280.
Step 3 If the fan does not run or the alarm persists, complete the “Replace the Fan-Tray Assembly” procedure
on page 2-280. The fan should run immediately when correctly inserted.
Step 4 If the replacement fan-tray assembly does not operate correctly, log into the Technical Support Website
at http://www.cisco.com/techsupport for more information or call Cisco TAC to report a
Service-Affecting (SA) problem 1 800 553-2447.
2.7.107 FAPS
Default Severity: Not Alarmed (NA), Non-Service-Affecting (NSA)
SONET Logical Object: FCMR
DWDM Logical Objects: TRUNK
The Fast Automatic Protection Switching condition is applicable to GEXP/10GEXP cards. This
condition occurs when the protection port, on the master card, switches from blocking to forwarding
state.
Clear the FAPS Alarm
Step 1 When the cause of switching disappears, the protection port switches from the forwarding to the
blocking state, and the FAPS alarm clears.
Step 2 If the alarm does not clear even after the protection port switches back to the blocking state, log into the
Technical Support Website at http://www.cisco.com/techsupport for more information or call Cisco TAC
(1 800 553-2447).
2.7.108 FAPS-CONFIG-MISMATCH
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.
2.7.109 FC-DE-NES
Default Severity: Major (MJ), Service-Affecting (SA)
SONET Logical Object: FCMR
DWDM Logical Objects: FC, TRUNK
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