An instance of the alarm indicated by alarmActiveModelPointer has been raised against the entity indicated by alarmActiveResourceId. The agent must throttle the generation of consecutive alarmActiveState traps so that there is at least a two-second gap between traps of this type against the same alarmActiveModelPointer and alarmActiveResourceId. When traps are throttled, they are dropped, not queued for sending at a future time. A management application should periodically check the value of alarmActiveLastChanged to detect any missed alarmActiveState notification-events, e.g., due to throttling or transmission loss.