Maintaining the T320 Control Boards

Purpose

For optimum router performance, verify the condition of the router’s control boards.

Action

On a regular basis:

• Check the LEDs on the control board faceplate. For more information, see T-CB LEDs
• Issue the show chassis environment cb command to check the status of the control boards. The output is similar to the following:
  user@host> show chassis environment cb

  CB 0 status:
    State                           Online Master
    Temperature                  29 degrees C / 84 degrees F
    Power:
      1.8 V                    1809 mV
      2.5 V                    2496 mV
      3.3 V                    3295 mV
      4.6 V                    4687 mV
      5.0 V                    5042 mV
      12.0 V                  11985 mV
      3.3 V bias               3277 mV
      8.0 V bias               7472 mV
    BUS Revision                 40
    FPGA Revision                 7
  
  

For further description of the output from the commands, see the Junos OS System Basics and Services Command Reference