The temperature of one or more components (Field Replaceable Units or FRUs) exceeded the indicated temperature, which is the upper of two thresholds. The fans (and impellers, if applicable) were in the indicated state. If the temperature does not go below the threshold within four minutes after the chassis process (chassisd) detects this condition, the chassisd process shuts down the routing platform. When this message was logged, the indicated number of seconds remained before shutdown.

In most cases the platform device will power down if the temperature stays above the temperature threshold for longer than four minutes and the chassisd will generate the CHASSISD_OVER_TEMP_CONDITION message. If it is an FRU component that is at fault for the high temperature, the chassisd will identify the failed FRU in the CHASSISD_OVER_TEMP_CONDITION syslog message.

Below are some examples of the message:

The CHASSISD_OVER_TEMP_CONDITION can be seen when the PEMS are not recognized properly and a new device is first booted up.

The CHASSISD_OVER_TEMP_CONDITION errors can also be seen if air filters are dirty and proper air flow is obstructed.

The CHASSISD_OVER_TEMP_CONDITION can be seen when the FRU component exceeds the upper temperature of the FRU’s threshold for longer than four minutes; then the chassis powers down.

Also check the site air conditioning. Check site ambient temperature and other devices at the same site for temperature issues.

Check the device air flow for any obstructions which may block the proper airflow. If you are not sure of the proper airflow for your device you can look up the airflow requirements on the Juniper Product Site or in the Technical Documentation .

In most Junos versions you can run show chassis temperature-thresholds to view the different thresholds allowed for your FRU device.

If more troubleshooting or research is needed, open a case with your technical support representative. Include the output of the following commands:


About the author


Leave a Comment