Step 1: Check the Control Board Environmental Status

Action

To check the 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

What It Means

The command output lists the Control Board state, redundancy status, temperature, power supply voltages, and circuitry revision level. If you do not specify a Control Board slot number, the command displays the environmental status for each Control Board installed in the router chassis. If you specify a Control Board slot number, the command displays the status for that slot only.