Cisco NCS 2000 series Troubleshoot Manual

If the alarm does not get cleared, you need to report a Service-Affecting (SA) problem. Log into the Technical Support
Website at http://www.cisco.com/c/en/us/support/index.html for more information or log into http://www.cisco.com/c/
en/us/support/web/tsd-cisco-worldwide-contacts.html to obtain a directory of toll-free Technical Support numbers for
your country.
OVER-TEMP-UNIT-PROT
Default Severity: Critical (CR), Service-Affecting (SA)
Logical Object: EQPT
The OVER_TEMP-UNIT-PROT alarm applies to the 100G-LC-C card. The alarm occurs when the temperature
of any one of the internal measurement points exceeds its predefined threshold. The alarm is raised because
of one of these reasons:
• An improper rack installation
• Abnormally high environmental temperature
• An unclean air filter
• A hardware failure of the card
When the card raises this alarm, the TX output power is shut down. This mechanism prevents the card from
damage.
Clearing the OVER-TEMP-UNIT-PROT Alarm
SUMMARY STEPS
1. Verify that the rack is installed properly. For proper airflow and cooling of the shelf, the shape of the
vertical posts of the rack should be such that the airflow vents are not covered. For more information
about the installation, refer to the Hardware Installation Guide.
2. If the rack installation is proper, verify that the environmental temperature of the room is not abnormally
high.
3. If the room temperature is not abnormally high, ensure that nothing prevents the fan-tray assembly from
passing air through the NCS system shelf.
4. If airflow is not blocked, determine whether the air filter needs replacement. Refer to the Inspect, Clean,
and Replace the Reusable Air Filter, on page 457 procedure.
5. If the air filter is clean, complete the Remove and Reinsert (Reseat) Any Card , on page 452 procedure.
6. If the alarm fails to get cleared, complete the Physically Replace a Card, on page 453 procedure for the
100G-LC-C card.
DETAILED STEPS
Step 1 Verify that the rack is installed properly. For proper airflow and cooling of the shelf, the shape of the vertical posts of
the rack should be such that the airflow vents are not covered. For more information about the installation, refer to the
Hardware Installation Guide.
Cisco NCS 2000 series Troubleshooting Guide, Release 11.0
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Alarm Troubleshooting
OVER-TEMP-UNIT-PROT

Cisco NCS 2000 series Specifications

General

Brand	Cisco
Model	NCS 2000 series
Category	Network Hardware
Language	English