The temperature sensor for the indicated Field Replaceable Unit (FRU) either did not respond to a request from the chassis control process (chassisd) for a temperature reading or sent a value that is outside the normal operating range.
The temperature sensor for the indicated component (Field Replaceable Unit or FRU) either did not respond to a request from the chassis control process (chassisd) for a temperature reading or sent a value that is outside the normal operating range.
An example of the message reported is as follows:
CM ENV Monitor: i2c read for Temp sensor 3 write failed
The alarm should also appear in the output of the show chassis alarms:
user@router> show chassis alarms 1 alarms currently active Alarm time Class Description 2010-03-20 23:22:11 CST Major FPC 0 EX-PFE3 Temp Sensor Fail
The sensor on the Field Replaceable Unit (FRU), such as the Routing Engine, the flexible PIC concentrator, or Power Entry Module has failed to send a temperature reading or the reading sent is outside of the normal operating range.
This is not traffic affecting, but failure to address the issue may result in a failure of the FRU identified in the error log.
The temperature sensor has failed for the identified device and is either not sending a reading or sending a reading outside of the normal range. The output of the show chassis alarms will identify the specific FRU in which the censor has failed.
Review the information from the show chassis alarms Review the information from the show log messages and show log chassisd Note any entries that may be associated with the error