This object specifies the type of the usage data reported by
cewEntityEnergyUsage.
max: This indicates that the actual power drawn cannot be
determined. A presumed value that is the maximum the
Cisco EnergyWise entity could draw is provided.
presumed: This indicates that the actual power drawn cannot
be determined but can be presumed from the model.
A dell box X draws 200W, Dell Model y draws 210W.
actual: This indicates that the usage data reported is not
presumed or max but the real power drawn. A PoE phone
drawing X amount of power can be determined by reading from
the port. A PoE phone can report the actual usage as X W.
unknown: This indicates that the usage reported is unknown.
In some cases, entities report aggregate power like what a
lighting controller or aggregate controller does. In such
cases it is not known whether the usage reported is actual
or presumed.
trusted: This indicates that the usage data reported was
reported from another source.