This object, carried within an ARP rate-limit trap, reports the version number of the trap message format being used, letting a receiving management system know how to correctly parse the accompanying data. An administrator's monitoring tooling uses this to select the correct parsing logic for the trap's other fields, particularly the multi-cell hh3cARPRatelimitTrapMsg object whose format may evolve between versions. A version value of 1 tells the receiving system to interpret the trap's cell data according to that specific format revision.