Frngsync; Clear The Frngsync Condition; Fstsync - Cisco ONS 15600 SDH Troubleshooting Manual

2.6.82 FRNGSYNC

If the alarm has cleared, it means a third cycle showed that the TSC card timing modules were
synchronized. If the alarm remains, it means that the ONS 15600 SDH system has had two frequency
mismatch cycles, and indicates a problem with the other TSC card.
If the FREQ-MISMATCH alarm remains after three 83-minute cycles, complete the
Step 4
Using CTC" procedure on page 2-130
Complete the
Step 5
card.
The card removal and reboot temporarily clears the alarm.
Wait for three intervals of 83 minutes (4 hours and 9 minutes) and check CTC to see if the
Step 6
FREQ-MISMATCH alarm has recurred. If it has not recurred, the problem is solved.
If the alarm has recurred after both TSC cards have been replaced, log into the Technical Support
Step 7
Website at http://www.cisco.com/techsupport for more information or call Cisco TAC (1 800 553-2447).
2.6.82 FRNGSYNC
The Free Running Synchronization Mode condition occurs when the reporting ONS 15600 SDH is in
free-run synchronization mode. External timing sources have been disabled and the node is using its
internal clock, or the node has lost its designated BITS timing source. After the 24-hour holdover period
expires, timing slips could begin to occur on an ONS 15600 SDH node relying on an internal clock.
If the ONS 15600 SDH is configured to operate from its internal clock, disregard the FRNGSYNC
Note
condition.

Clear the FRNGSYNC Condition

If the ONS 15600 SDH is configured to operate from an external timing source, verify that the BITS
Step 1
timing source is valid. Common problems with a BITS timing source include reversed wiring and bad
timing cards. Refer to the "Timing" chapter in the Cisco ONS 15600 SDH Reference Manual for more
information about it.
If the BITS source is valid, clear alarms related to the failures of the primary and secondary reference
Step 2
sources, such as the
Step 3 If the condition 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).

2.6.83 FSTSYNC

Cisco ONS 15600 SDH Troubleshooting Guide, R8.0
2-64
"Reset a Card with a Card Pull (Reseat)" procedure on page 2-133
Default Severity: Not Alarmed (NA), Non-Service-Affecting (NSA)
Logical Object: NE-SREF
"SYNCPRI" alarm on page 2-115
Default Severity: Not Alarmed (NA), Non-Service-Affecting (NSA)
Logical Object: EQPT
to make the TSC card standby.
and the "SYNCSEC" alarm on page
Chapter 2 Alarm Troubleshooting
"Soft-Reset a Card
for the standby TSC
2-115.
July 2010