Rapid Power Down is executed by the hardware in the event of a power-supply failure. It quickly cuts power to a PD to prevent an over-current scenario in the PSE. This field indicates whether the interface will go down in the event of any PSU failure or not. A value of on(2) indicates that a power supply failure will cause the power delivery to be cut on supply failure. A value of off(1) indicates that the port is unaffected by the failure of any single PSU.The default value is off(1).