Cisco ONS 15454 Troubleshooting Manual page 289

Chapter 2 Alarm Troubleshooting
The Failure to Switch to Protection Facility condition occurs when a working or protect electrical or
optical facility switches to its companion port by using a MANUAL command. For example, if you
attempt to manually switch traffic from an unused protect port to an in-service working port, the switch
will fail (because traffic is already present on the working port) and you will see the FAILTOSW
condition.
Clear the FAILTOSW Condition
Step 1 Look up and troubleshoot the higher-priority alarm. Clearing the higher-priority condition frees the card
and clears the FAILTOSW.
Note
If the condition does not clear, replace the working electrical or optical card that is reporting the
Step 2
higher-priority alarm by following the
This card is the working electrical or optical card using the protect card and not reporting FAILTOSW.
Replacing the working electrical or optical card that is reporting the higher-priority alarm allows traffic
to revert to the working slot and the card reporting the FAILTOSW to switch to the protect card.
Step 3 If the condition 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.
2.7.103 FAILTOSW-PATH
The Fail to Switch to Protection Path condition occurs when the working circuit does not switch to the
protection circuit on a path protection configuration. Common causes of the FAILTOSW-PATH alarm
include a missing or defective protect port, a lockout set on one of the path protection nodes, or
path-level alarms that would cause a path protection switch to fail including the
page
on page
The
on page
Clear the FAILTOSW-PATH Condition in a Path Protection Configuration
Look up and clear the higher-priority alarm. Clearing this alarm frees the standby card and clears the
Step 1
FAILTOSW-PATH condition. If the
the
November 2009
SONET Logical Objects: EQPT, OCN
DWDM Logical Objects: 2R, ESCON, FC, GE, ISC, TRUNK
A higher-priority alarm is an alarm raised on the working DS-N card using the 1:N card
protection group. The working DS-N card is reporting an alarm but not reporting a FAILTOSW
condition.
Default Severity: Not Alarmed (NA), Non-Service-Affecting (NSA)
SONET Logical Objects: STSMON, VT-MON
2-37, the "LOP-P" alarm on page
2-224, and the "UNEQ-P" alarm on page
"LOF (OCN)" alarm on page
2-220, or the "SF-L" condition on page 2-223
"UNEQ-P" alarm on page
"Physically Replace a Traffic Card" procedure on page
2-155, the "SD-P" condition on page
2-252.
2-151, the "LOS (OCN)" alarm on page
can also occur on the failed path.
"AIS-P" condition on page
2-252, the "SF-P" condition on page
Cisco ONS 15454 Troubleshooting Guide, R8.5
2.7.103 FAILTOSW-PATH
"AIS-P" condition on
2-220, the "SF-P" condition
2-164, the "SD-L" condition
2-37, the "LOP-P" alarm on page
2-224, the "SD-P" condition on
2-273.
2-155,
2-95