This read-write integer (0-4095, marked DURABLE), expressed in 256-packet increments, sets the falling threshold for the maximum number of broadcast packets allowed in packet buffer memory. An admin tunes this ceiling to define the point below which the switch considers broadcast congestion to have cleared, working together with the hysteresis control to avoid alert flapping. For example, an admin who observed a value of 10 here (2560 packets) triggering false alarms during normal ARP broadcast bursts would raise the ceiling to reduce noise.