Cisco CTX2500 User Manual

2-134
Cisco ONS 15310-MA SDH Troubleshooting Guide, Release 9.0
78-18663-01
Chapter 2 Alarm Troubleshooting
Alarm Procedures
Clear the SWTOTHIRD Condition
Step 1 To clear the condition, clear alarms related to failures of the primary source, such as the “SYNCPRI”
alarm on page 2-134 or the “SYNCSEC” alarm on page 2-135.
Step 2 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).
2.7.216 SYNC-FREQ
Default Severity: Not Alarmed (NA), Non-Service-Affecting (NSA)
SDH Logical Objects: BITS, E1, STM
The Synchronization Reference Frequency Out Of Bounds condition is reported against any reference
that is out of the bounds for valid references. The login node fails the reference and chooses another
internal or external reference to use.
Clear the SYNC-FREQ Condition
Step 1 Use an optical test set to verify the timing frequency of the line or BITS timing source and ensure that
it falls within the proper frequency. For specific procedures to use the test set equipment, consult the
manufacturer. For BITS, the proper timing frequency range is approximately –15 PPM to 15 PPM. For
optical line timing, the proper frequency range is approximately –16 PPM to 16 PPM.
Step 2 If the SYNC-FREQ 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).
2.7.217 SYNCPRI
Default Severity: Minor (MN), Non-Service-Affecting (NSA) for EXT-SREF; Major (MJ),
Service-Affecting (SA) for NE-SREF
SDH Logical Objects: EXT-SREF, NE-SREF
A Loss of Timing on Primary Reference alarm occurs when the ONS 15310-MA SDH loses the primary
timing source (reference 1). The system uses three ranked timing references. The timing references are
typically two BITS-level or line-level sources and an internal reference. If SYNCPRI occurs, the system
should switch to its secondary timing source (reference 2). Switching to a secondary timing source also
triggers the “SWTOSEC” alarm on page 2-133.
Clear the SYNCPRI Alarm
Step 1 In node view, click the Provisioning > Timing > General tabs.
Step 2 Verify the current configuration for REF-1 of the NE Reference.

Cisco CTX2500 Specifications

General

Brand	Cisco
Model	CTX2500
Category	Network Card
Language	English