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    Display Current Component Alarms

    Purpose

    To determine the details of the active chassis alarms and when they first appeared in the component.

    Action

    To display the active chassis alarms, use the following command:

    user@host> show chassis alarms

    Sample Output

    user@host> show chassis alarms
    5 alarms are currently active
    
    Alarm time               Class Description
    
     2002-04-16 15:09:01 PDT Major PIC 2/2 failed to initialize
     2002-04-16 15:08:40 PDT Major Power Supply A 2.5 volt output failed
     2002-04-16 15:08:40 PDT Major Power Supply A 5 volt output failed
     2002-04-16 15:08:40 PDT Major Power Supply A 3.3 volt output failed
     2002-04-16 15:08:40 PDT Major Power Supply A fan failed
    

    Meaning

    The command output displays the number of alarms currently active, the time at which the alarm began, the severity level, and an alarm description. Note the date and time of an alarm so that you can correlate it with error messages in the messages system log file. This sample command output is for a router from which the lower fan tray and the power supply have been removed, and the management Ethernet interface disconnected. The craft interface display, in alarm mode, displays a short description of the alarm. The show chassis alarms command output displays a longer description of the alarm.

    To view active router alarms, you can physically look at the craft interface or use the show chassis craft-interface command.

    The show chassis craft-interface command displays the most severe alarm first, the alarm indicator status, and the number of active alarms. You cannot scroll through the alarms (if there are more than two) at the command line.

    user@host> show chassis craft-interface
    Red alarm:     LED on, relay on
    Yellow alarm:  LED off, relay off
    Host OK LED:   On
    Host fail LED: Off
    
    FPCs     0  1  2  3
    -------------------
    Green    *  *  *  *
    Red      .  .  .  .
    
    LCD screen:
         +--------------------+
         |myrouter            |
         |5 Alarms active     |
         |R: PIC 2/2 FAILED   |
         |R: Supply A 2v FAIL |
         +--------------------+
    

    When a red or yellow alarm occurs, the craft interface goes into alarm mode. Alarm mode preempts idle mode, displaying a message to alert you of serious alarm conditions. In alarm mode, the screen displays the following information:

    • First line—Name of the router.
    • Second line—Number of alarms active on the router.
    • Third and fourth lines—Individual alarms, with the most severe condition shown first. Each line indicates whether the alarm is red (R) or yellow (Y).

    Published: 2012-08-20