Exercise-Span-Fail; Ext; Failtosw-Path - Cisco ONS 15327 User Documentation

Alarm Procedures
Lookup and troubleshoot any of these alarms, then reissue the Exercise-Ring command.
Step 2

14.4.41 EXERCISE-SPAN-FAIL

•
The Exercise Span command issues span switching of the requested channel without completing the
actual bridge and switch. The exercise-span-fail (EXERCISE-SPAN-FAIL) alarm is raised if the
command was issued but the exercise did not take place.
Procedure: Clear the EXERCISE-SPAN-FAIL Condition
Check for any LOS, LOF, or BLSR service-affecting alarms.
Step 1
Step 2 Lookup and troubleshoot any of these alarms, then reissue the Exercise Span command.

14.4.42 EXT

•
An external facility (EXT) alarm is detected external to the node because an environmental alarm is
present, for example, a door is open or flooding has occurred.
Procedure: Clear the EXT Alarm
Open the MIC card maintenance window to gather further information about this alarm.
Step 1
Perform your standard operating procedure for this environmental condition.
Step 2

14.4.43 FAILTOSW-PATH

•
The fail to switch path (FAILTOSW-PATH) alarm means the working path did not switch to the
protection path on a UPSR. Common causes of this alarm include a missing or defective protection card
or a lockout set on one of the UPSR nodes.
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.
Cisco ONS 15327 User Documentation, R3.3
14-36
Not Alarmed (NA) (Condition)
Minor, Service-Affecting
Not Alarmed (NA) (Condition)
Chapter 14 Alarm Troubleshooting
June 2002