Syncsec; Syncthird - Cisco ONS 15327 User Documentation

Chapter 14 Alarm Troubleshooting
Procedure: Clear the SYNCPRI Condition on the XTC Card
From the node view, click the Provisioning > Timing tabs.
Step 1
Check the current configuration for the REF-1 of the NE Reference.
Step 2
If the primary reference is a BITS input, follow the procedure in the
Step 3
page
If the primary reference clock is an incoming port on the ONS 15327, follow the procedure in the
Step 4
(OC-N)" section on page

14.4.118 SYNCSEC

•
A loss of timing on secondary reference (SYNCSEC) alarm occurs when the ONS 15327 loses 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. If SYNCSEC
occurs, the ONS 15327 should switch to the third timing source (reference 3) to obtain valid timing for
the ONS 15327. This switch also triggers the
Procedure: Clear the SYNCSEC Alarm on the XTC Card
From the node view, click the Provisioning > Timing tabs.
Step 1
Check the current configuration of the REF-2 for the NE Reference.
Step 2
If the secondary reference is a BITS input, follow the procedure in the
Step 3
page
If the secondary timing source is an incoming port on the ONS 15327, follow the procedure in the
Step 4
(OC-N)" section on page

14.4.119 SYNCTHIRD

•
A loss of timing on third reference (SYNCTHIRD) alarm occurs when the ONS 15327 loses the third
timing source (reference 3). 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 SYNCTHIRD occurs and
the ONS 15327 uses an internal reference for source three, then the XTC card may have failed. The ONS
15327 often reports either
Always use the supplied ESD wristband when working with a powered ONS 15327. Plug the wristband
Caution
cable into the ESD jack located on the lower-right outside edge of the shelf assembly.
June 2002
14-56.
14-57.
Minor, Non-Service-Affecting
14-56.
14-57.
Minor, Non-Service-Affecting
FRNGSYNC
SYNCTHIRD alarm.
or HLDOVERSYNC alarms after a SYNCTHIRD alarm.
Cisco ONS 15327 User Documentation, R3.3
Alarm Procedures
"LOS (BITS)" section on
"LOS (BITS)" section on
"LOS
"LOS
14-81