The threshold used to determine when to set the tracked
object's etsysTrackedObjectsCommonState to 'up'.
If the value of etsysTrackedObjectsPortGroupUpCount is
greater than or equal to this value, the
etsysTrackedObjectsCommonState for this tracked object is set
to 'up'.
This value MUST be greater than the value specified in
etsysTrackedObjectsPortGroupDownThresh. An inconsistentValue
error is returned if the value of a set operation is less than
or equal to etsysTrackedObjectsPortGroupDownThresh.