The falling threshold is a value which specifies that any enabled falling threshold events are to be generated when the value of the currently available leases drops to the falling threshold value via an allocation of a lease from the pool. The number of available leases is reported in rbnDhcpIntfThresholdAvailable. A falling threshold event is either a notification or a log message or both. Falling threshold events are enabled if either or both of rbnDhcpIntfThresholdFallingSendTrap and rbnDhcpIntfThresholdFallingLogMessage are true. Note, this is a falling threshold, so a falling threshold event will only be triggered on a transition of the value of rbnDhcpIntfThresholdAvailable dropping from (rbnDhcpIntfThresholdFallingThreshold+1) to rbnDhcpIntfThresholdFallingThreshold.