This object is used to create or delete the row entry in cnpdThresholdConfigTable. When creating a row entry the management station is required to specify a value for cnpdThresholdConfigIfIndex, cnpdThresholdConfigRising and cnpdThresholdConfigFalling. 'active' means that a createAndGo or active has been issued, AND a valid ifIndex exists. And therefore if a row is 'active' it means a ThresholdHistory entry may have been generated if the value was breached. If you set an 'active' row to 'createAndWait' - it will in fact get the status 'notReady'. Likewise if you set any row to 'notInService' or 'notReady' it will go to the 'notReady' state.