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    Display Control Board Error Messages in the System Log File


    To determine the details of the Control Board error messages in the system log file.


    To check for Control Board error messages in the system log messages file, use the following command:

    user@host> show log messages | match cb

    Check for messages at least 5 minutes before and after a Control Board alarm occurs.

    Sample Output

    user@host> show log messages | match cb
    May 18 16:04:06  routerhost chassisd[4836]: CHASSISD_FRU_OFFLINE_NOTICE: CB 1 offline: Offlined


    The messages system log file records the time the failure or event occurred, the severity level, a code, and a message description. You can also use the show log messages | match cb command to see error messages that are generated when a Control Board fails or is offline. Use this information to diagnose a Control Board problem and to let the Juniper Networks Technical Assistance Center (JTAC) know what error messages were generated and the router events that occurred before and after the problem. For more information about system log messages, see the Junos OS System Log Messages Reference.

    Published: 2012-08-20