Address Resolution Protocol (ARP) Parameters
Last Updated
- 2023-05-19
Note
Reverse Address Resolution Protocol Operation Codes The Reverse Address Resolution Protocol (RARP) specified in RFC 903 uses the "Reverse" codes below.
DYNAMIC REVERSE ARP The Dynamic Reverse Address Resolution Protocol (DRARP) uses the "DRARP" codes below. For further information, see RFC 1931.
INVERSE ADDRESS RESOLUTION PROTOCOL The Inverse Address Resolution Protocol (IARP) specified in RFC 2390 uses the "InARP" codes below.
Available Formats
Operation Codes
Registration Procedure(s)
- IETF Review or IESG Approval
Reference
- RFC 826: An Ethernet Address Resolution Protocol: Or Converting Network Protocol Addresses to 48.bit Ethernet Address for Transmission on Ethernet Hardware
- RFC 5494: IANA Allocation Guidelines for the Address Resolution Protocol (ARP)
Available Formats
| Number | Operation Code (op) | References |
|---|---|---|
| 0 | Reserved | RFC 5494 |
| 1 | REQUEST | RFC 826; RFC 5227 |
| 2 | REPLY | RFC 826; RFC 5227 |
| 3 | request Reverse | RFC 903 |
| 4 | reply Reverse | RFC 903 |
| 5 | DRARP-Request | RFC 1931 |
| 6 | DRARP-Reply | RFC 1931 |
| 7 | DRARP-Error | RFC 1931 |
| 8 | InARP-Request | RFC 2390 |
| 9 | InARP-Reply | RFC 2390 |
| 10 | ARP-NAK | RFC 1577 |
| 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; RFC 2176 |
| 24 | OP_EXP1 | RFC 5494 |
| 25 | OP_EXP2 | RFC 5494 |
| 26-65534 | Unassigned | |
| 65535 | Reserved | RFC 5494 |
Hardware Types
Expert(s)
- Carlos Pignataro
Reference
- RFC 826: An Ethernet Address Resolution Protocol: Or Converting Network Protocol Addresses to 48.bit Ethernet Address for Transmission on Ethernet Hardware
- RFC 5494: IANA Allocation Guidelines for the Address Resolution Protocol (ARP)
Available Formats
| 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 | RFC 5494 |
| 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 | RFC 1201 |
| 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 | RFC 4338 |
| 19 | Asynchronous Transmission Mode (ATM) | RFC 2225 |
| 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; RFC 2176 |
| 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 | RFC 3456 |
| 32 | InfiniBand (TM) | RFC 4391 |
| 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 |
| 35 | Pure IP | Inaky Perez-Gonzalez |
| 36 | HW_EXP1 | RFC 5494 |
| 37 | HFI | Tseng-Hui Lin |
| 38 | Unified Bus (UB) | Wei Pan |
| 39-255 | Unassigned | |
| 256 | HW_EXP2 | RFC 5494 |
| 257 | AEthernet | Geoffroy Gramaize |
| 258-65534 | Unassigned | |
| 65535 | Reserved | RFC 5494 |
Protocol Type
Registration Procedure(s)
- The Ethertype space is administered as described in RFC 5342.
Reference
- RFC 826: An Ethernet Address Resolution Protocol: Or Converting Network Protocol Addresses to 48.bit Ethernet Address for Transmission on Ethernet Hardware
- RFC 5494: IANA Allocation Guidelines for the Address Resolution Protocol (ARP)
- RFC 5342: IANA Considerations and IETF Protocol Usage for IEEE 802 Parameters
Note
These numbers share the Ethertype space. See IANA OUI Ethernet Numbers.
| No registrations at this time. |
Contact Information
| Name | Contact URI | Last Updated |
|---|---|---|
| Andy Malis | agmalis&gmail.com | 2013-05-28 |
| Avri Doria | avri&peoteon.com | 1994-12 |
| Geoffroy Gramaize | geoffroy.iana&gramaize.eu | 2016-07-20 |
| George Clapp | meritec!clapp&bellcore.bellcore.com | |
| Gill Pratt | gill%25mit-ccc@mc.lcs.mit.edu | |
| Grenville Armitage | gja&thumper.belcore.com | 1995-04 |
| Herb Jensen | hwjensen&itt.com | 1995-02 |
| Inaky Perez-Gonzalez | inaky.perez-gonzalez&intel.com | 2008-10-01 |
| Jean-Michel Pittet | jmp&gandalf.engr.sgi.com | 1998-11 |
| Jerome Etienne | jetienne&arobas.net | 2000-06 |
| Jon Postel | postel&isi.edu | |
| Jonathan Stone | jonathan&dsg.stanford.edu | 1996-05 |
| Joyce K. Reynolds | jkrey&isi.edu | |
| Kenji Fujisawa | fujisawa&sm.sony.co.jp | 1998-10 |
| Marion Pitts | marionp&vnet.ibm.com | 1997-05 |
| Mike Burrows | burrows&src.dec.com | |
| Mitsuru Maruyama | mitsuru&ntt-20.ecl.net | 1997-03 |
| Myron Hattig | Myron_Hattig&ccm.jf.intel.com | 1997-02 |
| Philip Koch | Philip.Koch&dartmouth.edu | |
| Rajiv Dhingra | rajiv&ultra.com | |
| Scott Guthery | sguthery&mobile-mind.com | 2000-03 |
| Scott Guthery | sguthery&hidcorp.com | 2008-09-25 |
| Tom Unger | tom&citi.umich | |
| Tseng-Hui Lin | tsenglin&us.ibm.com | |
| Wei Pan | tarzan.pan&huawei.com | 2023-05-19 |