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    Monitor Redundant SCG Status

    To monitor the redundant SCG status:

    1. Monitor the Redundant SCG Environmental Status
    2. Display the Redundant SCG LED States at the Command Line
    3. View the Redundant SCG LEDs

    Monitor the Redundant SCG Environmental Status

    Purpose

    To isolate problems in the redundant SCG by checking the environmental status.

    Action

    To check the redundant SCG environment status, use the following command:

    user@host> show chassis environment

    Sample Output

    t320@host> show chassis environment
    Class Item                   Status     Measurement
    Power PEM 0                  Absent    
          PEM 1                  OK        
    Temp  SCG 0                  OK         30 degrees C / 86 degrees F
          SCG 1                  OK         29 degrees C / 84 degrees F
    [...Output truncated...]
    

    Meaning

    The command output displays the status and temperature for each SCG.

    If there is a problem with the SCG status, you can display more detailed SCG environmental information with the following command:

    user@host> show chassis environment scg

    The command output is as follows:

    t320@host> show chassis environment scg
    SCG 0 status:
      State                           Online -  Master clock
      Temperature                  30 degrees C / 86 degrees F
      Power:
        GROUND                      0 mV
        3.3 V                    3317 mV
        5.0 V                    5072 mV
        5.6 V                    5697 mV
        1.8 V bias               1794 mV
        3.3 V bias               3304 mV
        5.0 V bias               4991 mV
        8.0 V bias               7318 mV
      BUS Revision                 40
    SCG 1 status:
      State                           Online - Standby
      Temperature                  29 degrees C / 84 degrees F
      Power:
        GROUND                      0 mV
        3.3 V                    3318 mV
        5.0 V                    5084 mV
        5.6 V                    5704 mV
        1.8 V bias               1782 mV
        3.3 V bias               3286 mV
        5.0 V bias               5003 mV
        8.0 V bias               7323 mV
      BUS Revision                 40
    

    The command output displays the status for each SCG slot 0 and 1. The operating status can be Present, Online, Offline, or Empty. If Online, it can be the clock source (Master clock) or backup (Standby). As shown in the output, the redundant SCG is SCG1, with a status of Standby. The command output displays the temperature of the air flowing past the SCG. The command output also displays information about the SCG power supplies and the SCG circuitry revision level.

    Display the Redundant SCG LED States at the Command Line

    Purpose

    To use the command line and determine the details of the redundant SCG LED states.

    Action

    To display the redundant SCG LED states, use the following command:

    user@host> show chassis craft-interface

    Sample Output

    t320@host> show chassis craft-interface
    [...Output truncated...] 
    SCG LEDs:
      SCG  0   1
    -------------- 
    Amber  .   .
    Green  *   *
    Blue   *   .
    [...Output truncated...]
    

    Meaning

    The command output displays the SCG LED status. The router has two SCGs installed. Asterisks (*) indicate the operation status. The color represents the possible SCG operating states: Amber (Fail), Green (OK), and Blue (Master). Both SCGs are functioning properly (Green). The SCG in slot 0 is operating as master; the SCG in slot 1 is the backup.

    View the Redundant SCG LEDs

    Purpose

    To view the redundant SCG LEDs on the SCG faceplate.

    Action

    To view the redundant SCG LEDs, remove the rear component cover and look on the SCG faceplate at the rear of the router chassis.Table 1 describes the functions of these LEDs.

    Table 1: SCG LEDs

    Label

    Color

    State

    Description

    OK

    Green

    On steadily

    SCG is online and is functioning normally.

    FAIL

    Amber

    On steadily

    SCG has failed.

    MASTER

    Blue

    On steadily

    SCG is functioning as master.

    Published: 2012-08-20