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    Checking the Control Board Alarms

    To check for Control Board alarms:

    1. Display Control Board Alarms
    2. Check the Control Board LEDs
    3. Display Control Board Error Messages in the System Log File
    4. Display Control Board Error Messages in the Chassis Daemon Log File

    Display Control Board Alarms

    Purpose

    For a listing of the conditions that trigger Control Board alarms, see Display the Current Router Alarms.

    Table 1 lists the Control Board alarm messages that display on the router craft interface LCD and at the CLI for the M320 and T320, T640, T1600, TX Matrix, and TX Matrix Plus routers.

    Table 1: Control Board Alarm Messages

    Component

    LCD Short Version

    CLI Long Version

    Control Board

    CB CB-number Failure

    RED ALARM - CB CB-number Failure

    CB CB-number Removed

    RED ALARM - CB CB-number Removed

    TX Matrix and TX Matrix Plus only

    CB cb-number Ethernet Switch Failure

    YELLOW ALARM - CB cb-number Ethernet Switch Failure

    Action

    To display any active Control Board alarms, use the following command:

    user@host> show chassis alarms

    Sample Output

    user@host> show chassis alarms
    1 alarms currently active
    Alarm time               Class  Description
    2004-01-07 17:35:03 PST  Major CB 1 Failure
    

    Meaning

    The command output displays the current FPC alarms, including the time the alarm occurred, the severity level, and the alarm description.

    To check for Control Board errors, you can also look at the show chassis craft-interface command output or check the LEDs on the Control Board faceplate.

    Check the Control Board LEDs

    Purpose

    To check the Control Board alarms from the LEDs located on the Control Board faceplate.

    Action

    To check the Control Board LEDs, look at the three LEDs located on the Control Board faceplate. Table 2 describes the functions of the Control Board LEDs.

    Note: The online/offline button on the Control Board is currently nonfunctional.

    Table 2: Control Board LEDs

    Label

    Color

    State

    Description

    OK

    Green

    On steadily

    Control Board is online and functioning normally.

    FAIL

    Amber

    On steadily

    Control Board has failed.

    MASTER

    Blue

    On steadily

    Control Board is functioning as master.

    Display Control Board Error Messages in the System Log File

    Purpose

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

    Action

    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
    

    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 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.

    Display Control Board Error Messages in the Chassis Daemon Log File

    Purpose

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

    Action

    To display Control Board error messages in the chassisd log file, use the following command:

    user@host> show log chassisd | match cb

    Sample Output

    user@host> show log chassisd | match cb
    May 18 16:04:06 CHASSISD_FRU_OFFLINE_NOTICE: Taking CB 1 offline: Offlined
    May 18 16:04:06 GBUS cmd to CB#1 [0x9], Green LED Off [0x1a]
    May 18 16:04:06 CB#1 - Green LED Off
    May 18 16:04:06 hwdb: entry for cbd 296 at slot 1 deleted
    

    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 updated when components are added or removed. You can search for multiple items in the chassisd log file by using the | 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 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