This carries the administrative state of the encapsulation tunnel at the moment the notification fired, letting the NMS distinguish a trap caused by an operator's own configuration change (admin state toggled) from an unexpected failure while admin state stayed enabled. An admin triaging a flood of tunnel alerts uses this field to filter out expected events from planned maintenance versus real faults needing attention. For example, a trap showing admin state disabled right after a maintenance window began is safe to acknowledge and suppress, unlike one showing enabled during business hours.