Ssm-Lnc - Cisco NCS 2000 series Troubleshooting Manual

Alarm Troubleshooting
DETAILED STEPS
Step 1
Verify that SSM is enabled on the external timing source.
Step 2 If timing is enabled, use an optical test set to determine that the external timing source is delivering SSM. For specific
procedures to use the test set equipment, consult the manufacturer.
If the alarm does not get cleared, you need to report a Service-Affecting (SA) problem. Log into the Technical Support
Website at http://www.cisco.com/c/en/us/support/index.html
en/us/support/web/tsd-cisco-worldwide-contacts.html
your country.

SSM-LNC

Default Severity: Not Alarmed (NA), Non-Service-Affecting (NSA)
Logical Object: TRUNK
The SSM Local Node Clock (LNC) Traceable condition occurs on ADM-10G and MXP trunk ports when
the SSM (S1) byte of the SONET overhead multiplexing section has been changed to signify that the line or
BITS timing source is the LNC.
Note SSM-LNC is an informational condition and does not require troubleshooting.
SSM-OFF
Default Severity: Not Alarmed (NA), Non-Service-Affecting (NSA)
Logical Object: TRUNK
The SSM Off condition applies to references used for timing related to the ADM-10G and MXP trunk ports.
It occurs when the SSM for the reference has been turned off. The node is set up to receive SSM, but the
timing source is not delivering SSM messages.
Clear the SSM-OFF Condition
SUMMARY STEPS
1. Complete the
DETAILED STEPS
Complete the Clear the SSM-FAIL Alarm, on page 402
to obtain a directory of toll-free Technical Support numbers for
Clear the SSM-FAIL Alarm, on page 402
procedure.
Cisco NCS 2000 series Troubleshooting Guide, Release 11.0
for more information or log into
procedure.
SSM-LNC
http://www.cisco.com/c/
403