Value,Name,Reference 0,BGP_NULL,[RFC6396] 1,BGP_UPDATE,[RFC6396] 2,BGP_PREF_UPDATE,[RFC6396] 3,BGP_STATE_CHANGE,[RFC6396] 4,BGP_SYNC,[RFC6396] 5,BGP_OPEN,[RFC6396] 6,BGP_NOTIFY,[RFC6396] 7,BGP_KEEPALIVE,[RFC6396] 8-65534,Unassigned, 65535,Reserved,[RFC6396]