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    Display Redundant Control Board Mastership

    To display Control Board mastership, do one of the following:

    1. Check the Redundant Control Board Environmental Status
    2. Check the Redundant Control Board Status from the Craft Interface
    3. Check the Redundant Control Board LED Status

    Check the Redundant Control Board Environmental Status

    Purpose

    To obtain the environmental status of the redundant Control Board.

    Action

    To check the redundant Control Board environmental status, use the following CLI command:

    user@host> show chassis environment cb

    Sample Output

    t640@host> show chassis environment cb  
    CB 0 status:
      State                           Online Master
      Temperature                  29 degrees C / 84 degrees F
      Power:
        1.8 V                    1805 mV
        2.5 V                    2501 mV
        3.3 V                    3293 mV
        4.6 V                    4725 mV
        5.0 V                    5032 mV
        12.0 V                  11975 mV
        3.3 V bias               3286 mV
        8.0 V bias               7589 mV
      GBUS Revision                40
      FPGA Revision                 7
    CB 1 status:
      State                           Online Standby
      Temperature                  32 degrees C / 89 degrees F
      Power:
        1.8 V                    1802 mV
        2.5 V                    2482 mV
        3.3 V                    3289 mV
        4.6 V                    4720 mV
        5.0 V                    5001 mV
        12.0 V                  11946 mV
        3.3 V bias               3274 mV
        8.0 V bias               7562 mV
      GBUS Revision                40
      FPGA Revision                 7
    

    Meaning

    The command output displays which Control Board is master and standby. Additionally, the command output displays the Control Board state, redundancy status, temperature, power source, and circuitry revision level for each Control Board installed in the router chassis. CB1 is shown in standby mode, and is the redundant Control Board.

    To display the environmental status of a particular Control Board, use the following command:

    t640@host> show chassis environment cb slot

    Check the Redundant Control Board Status from the Craft Interface

    Purpose

    To obtain the status of the redundant Control Board.

    Action

    If you are near the router, physically look at the craft interface for the Control Board LEDs. To display redundant Control Board status from the craft interface, use the following command:

    user@host> show chassis craft-interface

    Sample Output

    t640@host> show chassis craft-interface
    FPM Display contents:
    [...Output truncated...}
    CB LEDs:
       CB   0   1
    --------------
    Amber  .
    Green  *
    Blue   *
    [...Output truncated...]
    

    Meaning

    The CB LEDs section of the command output indicates the status of the redundant Control Board. An asterisk (*) indicates the current operating state: Amber (offline), Green (online), and Blue (Master). In the above output, no redundant Control Board is installed—the output under CB1 is blank.

    Check the Redundant Control Board LED Status

    Purpose

    To check the LED status of the redundant Control Board.

    Action

    To check the redundant Control Board LED status, look at the three LEDs located on the Control Board faceplate.Table 1 describes the Control Board LED states.

    Table 1: Control Board LEDs

    Label

    Color

    State

    Description

    OK

    Green

    On steadily

    Control Board is online and is functioning normally.

    FAIL

    Amber

    On steadily

    Control Board has failed.

    MASTER

    Blue

    On steadily

    Control Board is functioning as master.

    Published: 2012-08-20