Swtopri; Swtosec; Swtothird; Syncpri - Cisco ONS 15327 User Documentation

Alarm Procedures

14.4.114 SWTOPRI

•
The synchronization switch to primary reference (SWTOPRI) condition occurs when the ONS 15327
switches to the primary timing source (reference 1). The ONS 15327 uses three ranked timing references.
The timing references are typically two BITS-level or line-level sources and an internal reference.
Note This is a condition and not an alarm. It is for information only and does not require troubleshooting.

14.4.115 SWTOSEC

•
The synchronization switch to secondary reference (SWTOSEC) condition occurs when the ONS 15327
has switched to the secondary timing source (reference 2). The ONS 15327 uses three ranked timing
references. The timing references are typically two BITS-level or line-level sources and an internal
reference.
Procedure: Clear the SWTOSEC Condition
Find and troubleshoot alarms related to failures of the primary source, such as the

14.4.116 SWTOTHIRD

•
The synchronization switch to third reference (SWTOTHIRD) condition occurs when the ONS 15327
has switched to the third timing source (reference 3). The ONS 15327 uses three ranked timing
references. The timing references are typically two BITS-level or line-level sources and an internal
reference.
Procedure: Clear the SWTOTHIRD Condition
Find and troubleshoot alarms related to failures of the primary and secondary reference source, such as
the

14.4.117 SYNCPRI

•
A loss of timing on primary reference (SYNCPRI) alarm occurs when the ONS 15327 loses the primary
timing source (reference 1). The ONS 15327 uses three ranking timing references. The timing references
are typically two BITS-level or line-level sources and an internal reference. If SYNCPRI occurs, the
ONS 15327 should switch to its secondary timing source (reference 2). This switch also triggers the
SWTOSEC alarm.
Cisco ONS 15327 User Documentation, R3.3
14-80
Not Alarmed (NA) (Condition)
Not Alarmed (NA) (Condition)
Not Alarmed (NA) (Condition)
SYNCPRI and SYNCSEC
Minor, Non-Service-Affecting
alarms.
Chapter 14 Alarm Troubleshooting
SYNCPRI alarm.
June 2002