Step 1: Monitor the Redundant SCG Environmental Status

Action

To check the redundant SCG environment status, use the following CLI 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...]

What It Means

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

Alternative Action

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