The value of tmnxVrrpLagNumberDownEventPriority specifies the priority level associated with this event. When the number of LAG ports that are operationally down exceeds the threshold defined by tmnxVrrpLagNumberDown, this priority value will either be subtracted from the in-use priority (if the event is a 'delta' event) or the in-use priority will be explicitly overridden by this priority value (if the event is an 'explicit' event).