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Cisco ONS 15310-CL and Cisco ONS 15310-MA Troubleshooting Guide, R7.0
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Chapter 1 Alarm Troubleshooting
1.7.70 FAILTOSW-PATH
1.7.70 FAILTOSW-PATH
Default Severity: Not Alarmed (NA), Non-Service-Affecting (NSA)
SONET Logical Objects: STSMON, VTMON
The Fail to Switch to Protection Path condition occurs when the circuit does not switch from the working
path to the protect path on a path protection. Common causes of the FAILTOSW-PATH condition 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
“AIS-P” condition on page 1-19
, the
“LOP-P” alarm on page 1-92
, the
“SD-P” condition on page 1-125
, the
“SF-P” condition on page 1-127
,
and the
“UNEQ-P” alarm on page 1-143
.
The
“LOF (OCN)” alarm on page 1-89
, the
“LOS (OCN)” alarm on page 1-99
, the
“SD-L” condition on
page 1-124
, or the
“SF-L” condition on page 1-127
can also occur on the failed path.
Clear the FAILTOSW-PATH Condition in a Path Protection Configuration
Step 1
Look up and clear the higher priority alarm. If the
“AIS-P” condition on page 1-19
, the
“LOP-P” alarm
on page 1-92
, the
“UNEQ-P” alarm on page 1-143
, the
“SF-P” condition on page 1-127
, the
“SD-P”
condition on page 1-125
, the
“LOF (OCN)” alarm on page 1-89
, the
“LOS (OCN)” alarm on page 1-99
,
the
“SD-L” condition on page 1-124
, or the
“SF-L” condition on page 1-127
are also occurring on the
reporting port, complete the applicable alarm clearing procedure.
Step 2
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).
1.7.71 FAN
Default Severity: Critical (CR), Service-Affecting (SA)
SONET Logical Object: FAN
The Fan Failure alarm indicates a problem with the internal fan of the ONS 15310-CL or
ONS 15310-MA. When the fan is not fully functional, the temperature of the node can rise above its
normal operating range.
This alarm is not user-serviceable. If the alarm does not clear, log into the Technical Support Website at
http://www.cisco.com/techsupport for more information or call Cisco TAC to report a
Service-Affecting (SA) problem (1 800 553-2447).
1.7.72 FAN-DEGRADE
Default Severity: Major (MJ), Non-Service-Affecting (NSA)
SONET Logical Object: FAN
The Partial Fan Failure Speed Control Degradation alarm occurs if fan speed for one of the fans in the
ONS 15310-CL or ONS 15310-MA shelf falls under 500 RPM when read by a tachometry counter.
For an ONS 15310-CL, this alarm is not user-serviceable. For an ONS 15310-MA, refer to the fan tray
replacement procedure located in the
Cisco ONS 15310-CL and Cisco ONS 15310-MA Procedure
Guide
.
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