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Cisco ONS 15600 SDH Troubleshooting Guide, R8.0
July 2010
Chapter 2 Alarm Troubleshooting
2.6.188 SYNCTHIRD
Logical Objects: EXT-SREF, NE-SREF
A Second Synchronization Reference Failure Alarm occurs at the NE (node) level when the
ONS 15600 SDH loses the second timing source (reference 2). If SYNCSEC occurs, the
ONS 15600 SDH should switch to a third timing source (reference 3) to obtain valid timing for the
ONS 15600 SDH. This switch also triggers the
“SWTOTHIRD” condition on page 2-113
.
Clear the SYNCSEC Alarm
Step 1
From node view, click the
Provisioning > Timing > General
tabs.
Step 2
Check the current configuration of REF-2 for the NE Reference.
Step 3
If the second reference is a BITS input, follow the
“Clear the LOS (BITS) Alarm” procedure on
Step 4
If the second timing source 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).
2.6.188 SYNCTHIRD
The SYNCTHIRD condition is not used in this platform in this release. It is reserved for development.
2.6.189 SYSBOOT
Default Severity: Major (MJ), Service-Affecting (SA)
Logical Object: NE
The System Reboot alarm indicates that new software is booting on the node or shelf TSC card. No
action is required. The alarm clears when all cards finish rebooting the new software. The reboot takes
approximately three minutes.
2.6.190 TPTFAIL
The TPTFAIL alarm for packet over SDH (POS) is not used in this platform in this release. It is reserved
for development.
2.6.191 UNPROT-SYNCCLK
Default Severity: Minor (MN), Non-Service-Affecting (NSA)
Logical Object: NE
The Unprotected Synchronization or Clock Equipment alarm indicates that only one TSC card has
acquired the primary timing reference. The alarm is reported if there is no standby TSC card, or if the
standby TSC card has restarted and 700 seconds (in FSTSYNC mode) have not elapsed.
Summary of Contents for Cisco ONS 15600 SDH
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