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Cisco ONS 15327 User Documentation, R3.3
June 2002
Chapter 14 Alarm Troubleshooting
Alarm Procedures
Step 2
Lookup and troubleshoot any of these alarms, then reissue the Exercise-Ring command.
14.4.41 EXERCISE-SPAN-FAIL
•
Not Alarmed (NA) (Condition)
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
Step 1
Check for any LOS, LOF, or BLSR service-affecting alarms.
Step 2
Lookup and troubleshoot any of these alarms, then reissue the Exercise Span command.
14.4.42 EXT
•
Minor, Service-Affecting
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
Step 1
Open the MIC card maintenance window to gather further information about this alarm.
Step 2
Perform your standard operating procedure for this environmental condition.
14.4.43 FAILTOSW-PATH
•
Not Alarmed (NA) (Condition)
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.
Caution
Always use the supplied ESD wristband when working with a powered ONS 15327. Plug the wristband
cable into the ESD jack located on the lower-right outside edge of the shelf assembly.
Summary of Contents for ONS 15327
Page 22: ...Contents xxii Cisco ONS 15327 User Documentation June 2002 I N D E X ...
Page 30: ...Figures xxviii Cisco ONS 15327 User Documentation June 2002 ...
Page 44: ...Procedures xlii Cisco ONS 15454 Installation and Operations Guide R3 2 June 2002 ...
Page 540: ...Glossary GL 16 Cisco ONS 15327 User Documentation R3 3 June 2002 ...