This read-create integer is the RSVP 'Kb' parameter, specifying the minimum number of refresh intervals that blockade state will persist once a reservation enters blockade due to a preemption or route change. Blockade state prevents a reservation from being torn down too hastily after such an event, giving the network time to stabilize before declaring the reservation truly lost. An administrator on a network prone to frequent reroutes might raise csRsvpIfRefreshBlockadeMultiple to avoid prematurely tearing down reservations during transient routing changes.