This sets the minimum number of milliseconds that must elapse between FRR notification emissions, with the device permitted to drop or queue notifications that would otherwise fire faster than that; a value of 0 means no minimum period is enforced. It exists because a single flapping link protected by FRR can otherwise generate a flood of switchover traps that overwhelms the NMS or the router's own notification resources. For example, setting this to 5000 (5 seconds) on a PLR prone to micro-flaps limits it to at most one FRR trap every 5 seconds even if the underlying link bounces 50 times in that window.