This read-write enum (active/notActive), when set to the active action, copies the currently staged tentative service-class table entries into the live active table that actually governs traffic, since only the tentative table is normally read-write. This two-stage design lets an admin edit several service-class parameters at once in the tentative table and then commit them together instead of each change taking effect immediately. For example, after adjusting minimum rate, maximum rate, and priority in several tentative rows, setting this object to the active action pushes all those changes live at the same time.