Defines the ifOperStatus transition(s) of an ifTable object that generates a SNMP linkUp/linkDown trap: none : disable linkUp/linkDown trap generation. any : enable bintec like trap generation. - entering the up state generates a up trap - any other state change generates a down trap up : enable rfc1157 like trap generation. - entering the up state generates a up trap - leaving the up state generates a down trap down : enable rfc2233 like trap generation. - leaving the down state generates a up trap - entering the down state generates a down trap Seven parameters are sent in each linkUp/linkDown trap pdu: 1. ifEntry.ifIndex (mandatory for linkUp/Down traps) 2. ifEntry.ifDescr 3. ifEntry.ifType 4. ifEntry.ifAdminStatus 5. ifEntry.ifOperStatus 6. system.Description 7. system.Name