Reverse Address Resolution Protocol Operation CodesThe Reverse Address Resolution Protocol (RARP) specified in [RFC903]uses the "Reverse" codes below.DYNAMIC REVERSE ARPThe Dynamic Reverse Address Resolution Protocol (DRARP) uses the"DRARP" codes below. For further information, see [RFC1931].INVERSE ADDRESS RESOLUTION PROTOCOLThe Inverse Address Resolution Protocol (IARP) specified in [RFC2390]uses the "InARP" codes below.
Registries included below
IETF Review or IESG Approval
| Number | Operation Code (op) | References |
|---|---|---|
| 0 | Reserved | [RFC5494] |
| 1 | REQUEST | [RFC826][RFC5227] |
| 2 | REPLY | [RFC826][RFC5227] |
| 3 | request Reverse | [RFC903] |
| 4 | reply Reverse | [RFC903] |
| 5 | DRARP-Request | [RFC1931] |
| 6 | DRARP-Reply | [RFC1931] |
| 7 | DRARP-Error | [RFC1931] |
| 8 | InARP-Request | [RFC2390] |
| 9 | InARP-Reply | [RFC2390] |
| 10 | ARP-NAK | [RFC1577] |
| 11 | MARS-Request | [Grenville_Armitage] |
| 12 | MARS-Multi | [Grenville_Armitage] |
| 13 | MARS-MServ | [Grenville_Armitage] |
| 14 | MARS-Join | [Grenville_Armitage] |
| 15 | MARS-Leave | [Grenville_Armitage] |
| 16 | MARS-NAK | [Grenville_Armitage] |
| 17 | MARS-Unserv | [Grenville_Armitage] |
| 18 | MARS-SJoin | [Grenville_Armitage] |
| 19 | MARS-SLeave | [Grenville_Armitage] |
| 20 | MARS-Grouplist-Request | [Grenville_Armitage] |
| 21 | MARS-Grouplist-Reply | [Grenville_Armitage] |
| 22 | MARS-Redirect-Map | [Grenville_Armitage] |
| 23 | MAPOS-UNARP | [Mitsuru_Maruyama][RFC2176] |
| 24 | OP_EXP1 | [RFC5494] |
| 25 | OP_EXP2 | [RFC5494] |
| 26-65534 | Unassigned | |
| 65535 | Reserved | [RFC5494] |
Carlos Pignataro
| Range | Registration Procedures | Note |
|---|---|---|
| requests for values below 256 | Expert Review | |
| requests for more than one value | Expert Review | |
| requests for one value greater than 255 | First Come First Served | |
| requests for one value, no value specified | First Come First Served | can only be assigned a two-octet value (i.e., a value greater than 255) |
| Number | Hardware Type (hrd) | Reference |
|---|---|---|
| 0 | Reserved | [RFC5494] |
| 1 | Ethernet (10Mb) | [Jon_Postel] |
| 2 | Experimental Ethernet (3Mb) | [Jon_Postel] |
| 3 | Amateur Radio AX.25 | [Philip_Koch] |
| 4 | Proteon ProNET Token Ring | [Avri_Doria] |
| 5 | Chaos | [Gill_Pratt] |
| 6 | IEEE 802 Networks | [Jon_Postel] |
| 7 | ARCNET | [RFC1201] |
| 8 | Hyperchannel | [Jon_Postel] |
| 9 | Lanstar | [Tom_Unger] |
| 10 | Autonet Short Address | [Mike_Burrows] |
| 11 | LocalTalk | [Joyce_K_Reynolds] |
| 12 | LocalNet (IBM PCNet or SYTEK LocalNET) | [Joseph Murdock] |
| 13 | Ultra link | [Rajiv_Dhingra] |
| 14 | SMDS | [George_Clapp] |
| 15 | Frame Relay | [Andy_Malis] |
| 16 | Asynchronous Transmission Mode (ATM) | [[JXB2]] |
| 17 | HDLC | [Jon_Postel] |
| 18 | Fibre Channel | [RFC4338] |
| 19 | Asynchronous Transmission Mode (ATM) | [RFC2225] |
| 20 | Serial Line | [Jon_Postel] |
| 21 | Asynchronous Transmission Mode (ATM) | [Mike_Burrows] |
| 22 | MIL-STD-188-220 | [Herb_Jensen] |
| 23 | Metricom | [Jonathan_Stone] |
| 24 | IEEE 1394.1995 | [Myron_Hattig] |
| 25 | MAPOS | [Mitsuru_Maruyama][RFC2176] |
| 26 | Twinaxial | [Marion_Pitts] |
| 27 | EUI-64 | [Kenji_Fujisawa] |
| 28 | HIPARP | [Jean_Michel_Pittet] |
| 29 | IP and ARP over ISO 7816-3 | [Scott_Guthery] |
| 30 | ARPSec | [Jerome_Etienne] |
| 31 | IPsec tunnel | [RFC3456] |
| 32 | InfiniBand (TM) | [RFC4391] |
| 33 | TIA-102 Project 25 Common Air Interface (CAI) | [Jeff Anderson, Telecommunications Industry of America (TIA)TR-8.5 Formulating Group, <cja015&motorola.com>, June 2004] |
| 34 | Wiegand Interface | [Scott_Guthery_2] |
| 35 | Pure IP | [Inaky_Perez-Gonzalez] |
| 36 | HW_EXP1 | [RFC5494] |
| 37 | HFI | [Tseng-Hui_Lin] |
| 38 | Unified Bus (UB) | [Wei_Pan] |
| 39-255 | Unassigned | |
| 256 | HW_EXP2 | [RFC5494] |
| 257 | AEthernet | [Geoffroy_Gramaize] |
| 258-65534 | Unassigned | |
| 65535 | Reserved | [RFC5494] |
The Ethertype space is administered as described in [RFC5342].
These numbers share the Ethertype space. See [https://www.iana.org/assignments/ethernet-numbers].
| No registrations at this time. |