What do alert activity and status mean?
The alert activity indicates if the offending attribute (e.g. a prefix) is still being observed in BGP updates in the last 8h (“On” state). If the attribute disappears from feeds for more than 8h, then the alert is automatically cleared to “Off” state. The alert status is a state controlled by the user. By default all alerts are created in the “open” state, but the user may want to “close” them later for house keeping purposes. The activity and status are independent properties of the alerts.