To enable MVX sensor mode:

Log in to the integrated appliance CLI.
Go to CLI configuration mode:
hostname > enable
hostname # configure terminal
Enable sensor mode:
hostname (config) # mvx mode sensor
Reload the appliance:
hostname (config) # reload
Press Enter when prompted to save changes.

Example

The following example enables nx-3 to function as a sensor.

nx-3 (config) # mvx mode sensor
MVX sensor mode configuration successful. Please reload the appliance to come up in the configured mode
nx-3 (config) # reload
Configuration has been modified; save first? [yes]

nx-3 # show mvx status 
MVX Mode Status:
    Sensor Config Enabled:     yes 
    Mode Reboot Required:      no
    Current Operating Mode:    sensor