Failtoswr; Clear The Failtoswr Condition In A Two-Fiber Ms-Spring Configuration - Cisco ONS 15600 SDH Troubleshooting Manual

Chapter 2 Alarm Troubleshooting
If the condition does not clear, log into the Cisco Technical Support Website at
Step 2
http://www.cisco.com/techsupport for more information or log into
http://www.cisco.com/warp/public/687/Directory/DirTAC.shtml to obtain a directory of toll-free
Technical Support numbers for your country.

2.6.58 FAILTOSWR

The Fail to Switch to Protection Ring condition occurs when a ring switch did not complete because of
internal APS problems.
FAILTOSWR clears in any of the following situations:
•
•
•
•
•
Invisible laser radiation could be emitted from the end of the unterminated fiber cable or connector.
Warning
Do not stare into the beam directly with optical instruments. Viewing the laser output with certain
optical instruments (for example, eye loupes, magnifiers, and microscopes) within a distance of
100 mm could pose an eye hazard. Statement 1056
Use of controls, adjustments, or performing procedures other than those specified may result in
Warning
hazardous radiation exposure. Statement 1057

Clear the FAILTOSWR Condition in a Two-Fiber MS-SPRing Configuration

Perform the EXERCISE RING command on the reporting card by completing the following steps:
Step 1
a.
b.
c.
If the condition does not clear, from the view menu, choose Go to Network View.
Step 2
Look for alarms on STM-N cards that make up the ring or span and troubleshoot these alarms.
Step 3
Step 4 If clearing other alarms does not clear the FAILTOSW-RING condition, log into the near-end node.
Step 5 Click the Maintenance > MS-SPRing tabs.
July 2010
Default Severity: Not Alarmed (NA), Non-Service-Affecting (NSA)
Logical Object: STMN
A physical card pull of the active TSC card (done under Cisco TAC supervision).
A node power cycle.
A higher-priority event such as an external switch command.
The next ring switch succeeds.
The cause of the APS switch (such as the
condition on page 2-99) clears.
Click the Maintenance > MS-SPRing tabs.
Click the row of the affected ring under the West Switch column.
Select Exercise Ring from the drop-down list.
"MS-DEG" condition on page 2-98
Cisco ONS 15600 SDH Troubleshooting Guide, R8.0
2.6.58 FAILTOSWR
or the "MS-EXC"
2-53