Frngsync; Fstsync - Cisco ONS 15327 User Documentation

Chapter 14 Alarm Troubleshooting
The force switch request on facility or equipment (FORCED-REQ) alarm means a user entered the force
command on a span or card to force traffic from a working card or working span to a protection card or
protection span or vice versa. You do not need to clear this alarm if you want the force switch to remain
in place. To clear this alarm, clear the force command.
Procedure: Clear the FORCED-REQ on an OC-N Card
Click the Maintenance tab.
Step 1
Click the Protection tab for a card or span switch.
Step 2
At Operation, click the drop-down arrow.
Step 3
Choose Clear and click Apply.
Step 4

14.4.59 FRNGSYNC

•
The free-running synchronization mode (FRNGSYNC) alarm means the reporting ONS 15327 is in
free-run synchronization mode. External timing sources have been disabled and the node is using its
internal clock, or the ONS 15327 has lost its designated BITS timing source. After the 24-hour holdover
period expires, timing slips may begin to occur on an ONS 15327 relying on an internal clock.
Procedure: Clear the FRNGSYNC Alarm
Step 1 If the ONS 15327 is configured to operate from its own internal clock, disregard this alarm.
If the ONS 15327 is configured to operate off an external timing source, verify that the BITS timing
Step 2
source is valid. Common problems with a BITS timing source include reversed wiring and bad timing
cards.
Find and troubleshoot alarms related to the failures of the primary and secondary reference sources, such
Step 3
as SYNCPRI and SYNCSEC.

14.4.60 FSTSYNC

•
A fast-start synchronization mode (FSTSYNC) alarm raises when the ONS 15327 is choosing a new
timing reference. The previous timing reference has failed. This alarm disappears after approximately
30 seconds.
Note This is an informational alarm.
June 2002
Major, Service-Affecting
Minor, Non-Service-Affecting
Cisco ONS 15327 User Documentation, R3.3
Alarm Procedures
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