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Cisco ONS 15600 SDH Troubleshooting Guide, R8.0
July 2010
Chapter 2 Alarm Troubleshooting
2.6.186 SYNCPRI
Step 3
If the alarm clears, complete the
“Replace a TSC Card” procedure on page 2-136
Note
It takes approximately 20 minutes for the active TSC card to transfer the system software to the
newly installed TSC card. Software transfer occurs in instances where different software
versions exist on the two cards. When the transfer completes, the TSC card reboots and goes into
standby mode after approximately three minutes.
Note
If the active and standby TSC cards have the same versions of software, it takes approximately
three minutes for software to be updated on a standby TSC card.
Step 4
If the SYNC-FREQ alarm continues to report after replacing the TSC card, log into the Technical
Support Website at http://www.cisco.com/techsupport for more information or call Cisco TAC (1 800
553-2447).
2.6.186 SYNCPRI
Default Severity: Minor (MN), Non-Service-Affecting (NSA) for EXT-SREF; Major (MJ),
Service-Affecting (SA) for NE-SREF
Logical Objects: EXT-SREF, NE-SREF
A Primary Synchronization Reference Failure alarm occurs at the NE (node) level when the
ONS 15600 SDH loses the primary timing source (reference 1). The ONS 15600 SDH 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 ONS 15600 SDH should switch to its second timing source
(reference 2). This switch also triggers the SWTOSEC alarm.
Clear the SYNCPRI Alarm
Step 1
From node view, click the
Provisioning > Timing > General
tabs and identify the timing source in
REF-1 of the NE Reference.
Step 2
If REF-1 is Internal, this refers to the active TSC card. Look for any alarms related to the TSC card and
troubleshoot them.
Step 3
If REF-1 is BITS, follow the
“Clear the LOF (BITS) Alarm” procedure on page 2-82
Step 4
If the primary reference clock is an incoming port on the ONS 15600 SDH, follow the
(STMN) Alarm” procedure on page 2-83
Step 5
If the alarm 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).
2.6.187 SYNCSEC
Default Severity: Minor (MN), Non-Service-Affecting (NSA)
Summary of Contents for Cisco ONS 15600 SDH
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