When enabled, definition of a new policy and existing policy precedence updates cause active policy re-evaluation to occur. Currently applied policies, even if they are still applicable, may be replaced by a new policy if it is also applicable to an interface and has a higher precedence. When disabled, policy precedence is only considered when a policy is first evaluated for interface applicability. Once a policy is applied, it will not be replaced by another policy until it is no longer applicable to the interface.