Cisco CTX2500 User Manual

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Cisco ONS 15310-MA SDH Troubleshooting Guide, Release 9.0
78-18663-01
Chapter 2 Alarm Troubleshooting
Alarm Procedures
2.7.83 FRCDSWTOTHIRD
Default Severity: Not Alarmed (NA), Non-Service-Affecting (NSA)
SDH Logical Objects: EXT-SREF, NE-SREF
The Force Switch to Third Timing Source condition occurs when the user issues a Force command to
switch to a third timing source.
Note FRCDSWTOTHIRD is an informational condition. It does not require troubleshooting.
2.7.84 FRNGSYNC
Default Severity: Not Alarmed (NA), Non-Service-Affecting (NSA)
SDH Logical Object: NE-SREF
The Free Running Synchronization Mode condition occurs when the reporting ONS 15310-MA 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 a node relying on an internal clock.
Note If the ONS 15310-MA SDH is configured to operate from its internal clock, disregard the FRNGSYNC
condition.
Clear the FRNGSYNC Condition
Step 1 If the ONS 15310-MA SDH is configured to operate from an external timing source, verify that the BITS
timing source is valid. Refer to the “Timing” chapter in the Cisco ONS 15310-MA SDH Reference
Manual for more information about it.
Step 2 If the BITS source is valid, clear alarms related to the failures of the primary and secondary reference
sources, such as the “SYNCPRI” alarm on page 2-134 and the “SYNCSEC” alarm on page 2-135.
Step 3 If the condition does not clear, log into the Technical Support Website at
http://www.cisco.com/cisco/web/support/index.html for more information or call Cisco TAC
(1-800-553-2447).
2.7.85 FSTSYNC
Default Severity: Not Alarmed (NA), Non-Service-Affecting (NSA)
SDH Logical Object: NE-SREF
A Fast Start Synchronization Mode condition occurs when the ONS 15310-MA SDH is choosing a new
timing reference. The previous timing reference has failed.
The FSTSYNC condition disappears after approximately 30 seconds. If the condition does not clear, log
into the Technical Support Website at http://www.cisco.com/cisco/web/support/index.html for more
information or call Cisco TAC (1-800-553-2447).

Cisco CTX2500 Specifications

General

Brand	Cisco
Model	CTX2500
Category	Network Card
Language	English