The object specifies the peak power which has been consumed for PoE.
It is defined as the highest measured value of power in milliWatts
that has been consumed at any one point in time by the sum of the PoE
ports. Its value is only reset when the unit is powered on or when
it is manually reset by the user as specifiedbelow. It is a read/write
integer value with units of Watts (note - Watts is chosen instead of
milliWatts here since the IETF Power MIB [1] measures unit based
parameters, such as the pethMainPsePower object, in units of Watts).
Writing a value of zero to this object resets its value to zero.
Writing any other value to this object has noeffect on its value
and an error is returned.