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    Check Router Alarms

    Chassis alarms indicate a problem with a chassis component, such as the Flexible PIC Concentrators (FPCs), cooling system, power supplies, and other components. For a listing of the chassis alarms for a particular router, see the appropriate router hardware guide.

    To check router system alarms:

    1. Display Current Component Alarms
    2. Display Component Error Messages in the System Log File
    3. Display Component Errors in the Chassis Daemon Log File

    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).

    Display Component Error Messages in the System Log File

    Purpose

    To determine the details of the component error messages in the System Log File.

    Action

    To display component error messages in the messages system log file, use the following operational mode command:

    user@host> show log messages

    Sample Output

    user@host> show log messages
    [...Output truncated...]
    Apr 17 11:12:45 tylenol scb CM: ALARM SET: (Major) Power Supply B fan failed
    Apr 17 11:12:46 tylenol scb CM: ALARM CLEAR: Power Supply B fan failed
    Apr 17 11:12:46 tylenol alarmd[590]: Alarm cleared: Pwr supply color=RED, class=CHASSIS, reason=Power Supply B fan failed
    Apr 17 11:13:09 tylenol alarmd[590]: Alarm set: Pwr supply color=RED, class=CHASSIS, reason=Power Supply B fan failed
    Apr 17 11:13:09 tylenol scb CM: ALARM SET: (Major) Power Supply B fan failed
    Apr 17 11:13:10 tylenol alarmd[590]: Alarm cleared: Pwr supply color=RED, class=CHASSIS, reason=Power Supply B fan failed
    Apr 17 11:13:10 tylenol scb CM: ALARM CLEAR: Power Supply B fan failed
    [...Output truncated...]
    

    Meaning

    The messages system log file records the time the failure or event occurred, the severity level, a code, and a message description. You can use the date and time to browse the messages log file, or you can use the show log messages | match component-name command to view error messages that are specific to a particular component. For example, the command output shows the common power supply error messages logged from the router. In the filter expression, if there is a space in the component name, enclose the component name in quotation marks, for example | match “ power supply”.

    Use system log file information to isolate a component problem and to let the Juniper Networks Technical Assistance Center (JTAC) know what error messages were generated at the time of the event. For more information about system log messages, see the Junos OS System Log Messages Reference.

    Display Component Errors in the Chassis Daemon Log File

    Purpose

    To determine the details of the component error messages in the Chassis Daemon Log File.

    Action

    To display component error messages in the chassis daemon (chassisd) log file, use the following command:

    user@host> show log chassisd

    Sample Output

    user@host> show log chassisd
    Jun 11 20:45:08 *** inventory change ***
    Jun 11 20:45:08 CIP set alarm 0x1
    Jun 11 20:45:08 alarm op fru 34 op 1 reason 1
    Jun 11 20:45:08 send: red alarm set, class 100 obj 112 reason 1
    Jun 11 20:45:08 CIP removed
    

    Meaning

    The chassisd database provides the date, time, and a component status message. The chassisd database is dynamic. It is initialized at router startup and is maintained when components are added or removed. The command output displays error messages that are generated when a Connector Interface Panel (CIP) fails or is removed.

    Published: 2012-08-20