When set to enabled(1), the agent issues a trap when the MAC
address threshold as defined in the
etsysMACLockingFirstArrivalStationsAllocated object has been
reached.
Arrival of these traps at the management station is not
guaranteed and the trap generation rate is not required to
match the detection rate. A best effort delivery is acceptable.
When disabled(2), no traps are sent as a result of the
threshold being reached.