protocols revision 1.34
1 # See also: protocols(5), https://www.iana.org/assignments/protocol-numbers/ 2 # 3 # Protocol Numbers 4 # 5 # Last Updated 6 # 2022-09-28 7 # 8 # Available Formats 9 # [IMG] 10 # XML [IMG] 11 # HTML [IMG] 12 # Plain text 13 # 14 # Registry included below 15 # 16 # *Assigned Internet Protocol Numbers 17 # 18 # Assigned Internet Protocol Numbers 19 # 20 # Registration Procedure(s) 21 # 22 # IESG Approval or Standards Action 23 # 24 # Reference 25 # [RFC5237][RFC7045] 26 # 27 # Note 28 # 29 # In the Internet Protocol version 4 (IPv4) [RFC791] there is a field 30 # called "Protocol" to identify the next level protocol. This is an 8 31 # bit field. In Internet Protocol version 6 (IPv6) [RFC8200], this field 32 # is called the "Next Header" field. 33 # 34 # 35 # Note 36 # 37 # Values that are also IPv6 Extension Header Types should be listed in the 38 # IPv6 Extension Header Types registry at [IANA registry ipv6-parameters]. 39 # 40 # 41 # Available Formats 42 # [IMG] 43 # CSV 44 # 45 # Decimal Keyword Protocol IPv6 Extension Reference 46 # Header 47 # protocol num aliases # comments 48 hopopt 0 HOPOPT # IPv6 Hop-by-Hop Option Y [RFC8200] 49 icmp 1 ICMP # Internet Control Message [RFC792] 50 igmp 2 IGMP # Internet Group Management [RFC1112] 51 ggp 3 GGP # Gateway-to-Gateway [RFC823] 52 ipv4 4 IPv4 # IPv4 encapsulation [RFC2003] 53 st 5 ST # Stream [RFC1190][RFC1819] 54 tcp 6 TCP # Transmission Control [RFC9293] 55 cbt 7 CBT # CBT [Tony_Ballardie] 56 egp 8 EGP # Exterior Gateway Protocol [RFC888][David_Mills] 57 # any private interior gateway 58 igp 9 IGP # (used by Cisco for their [Internet_Assigned_Numbers_Authority] 59 # IGRP) 60 bbn-rcc-mon 10 BBN-RCC-MON # BBN RCC Monitoring [Steve_Chipman] 61 nvp-ii 11 NVP-II # Network Voice Protocol [RFC741][Steve_Casner] 62 # [Boggs, D., J. Shoch, E. Taft, and R. Metcalfe, "PUP: An Internetwork 63 pup 12 PUP # PUP Architecture", XEROX Palo Alto Research Center, CSL-79-10, July 1979; 64 # also in IEEE Transactions on Communication, Volume COM-28, Number 4, 65 # April 1980.][[XEROX]] 66 argus 13 ARGUS # (deprecated) ARGUS [Robert_W_Scheifler] 67 emcon 14 EMCON # EMCON [<mystery contact>] 68 xnet 15 XNET # Cross Net Debugger [Haverty, J., "XNET Formats for Internet Protocol Version 4", IEN 158, 69 # October 1980.][Jack_Haverty] 70 chaos 16 CHAOS # Chaos [J_Noel_Chiappa] 71 udp 17 UDP # User Datagram [RFC768][Jon_Postel] 72 mux 18 MUX # Multiplexing [Cohen, D. and J. Postel, "Multiplexing Protocol", IEN 90, 73 # USC/Information Sciences Institute, May 1979.][Jon_Postel] 74 dcn-meas 19 DCN-MEAS # DCN Measurement Subsystems [David_Mills] 75 hmp 20 HMP # Host Monitoring [RFC869][Bob_Hinden] 76 prm 21 PRM # Packet Radio Measurement [Zaw_Sing_Su] 77 # ["The Ethernet, A Local Area Network: Data Link Layer and Physical Layer 78 # Specification", AA-K759B-TK, Digital Equipment Corporation, Maynard, MA. 79 # Also as: "The Ethernet - A Local Area Network", Version 1.0, Digital 80 # Equipment Corporation, Intel Corporation, Xerox Corporation, September 81 xns-idp 22 XNS-IDP # XEROX NS IDP 1980. And: "The Ethernet, A Local Area Network: Data Link Layer and 82 # Physical Layer Specifications", Digital, Intel and Xerox, November 1982. 83 # And: XEROX, "The Ethernet, A Local Area Network: Data Link Layer and 84 # Physical Layer Specification", X3T51/80-50, Xerox Corporation, Stamford, 85 # CT., October 1980.][[XEROX]] 86 trunk-1 23 TRUNK-1 # Trunk-1 [Barry_Boehm] 87 trunk-2 24 TRUNK-2 # Trunk-2 [Barry_Boehm] 88 leaf-1 25 LEAF-1 # Leaf-1 [Barry_Boehm] 89 leaf-2 26 LEAF-2 # Leaf-2 [Barry_Boehm] 90 rdp 27 RDP # Reliable Data Protocol [RFC908][Bob_Hinden] 91 irtp 28 IRTP # Internet Reliable [RFC938][Trudy_Miller] 92 # Transaction 93 iso-tp4 29 ISO-TP4 # ISO Transport Protocol Class [RFC905][<mystery contact>] 94 # 4 95 netblt 30 NETBLT # Bulk Data Transfer Protocol [RFC969][David_Clark] 96 # MFE Network Services [Shuttleworth, B., "A Documentary of MFENet, a National Computer 97 mfe-nsp 31 MFE-NSP # Protocol Network", UCRL-52317, Lawrence Livermore Labs, Livermore, California, 98 # June 1977.][Barry_Howard] 99 merit-inp 32 MERIT-INP # MERIT Internodal Protocol [Hans_Werner_Braun] 100 dccp 33 DCCP # Datagram Congestion Control [RFC4340] 101 # Protocol 102 3pc 34 3PC # Third Party Connect Protocol [Stuart_A_Friedberg] 103 idpr 35 IDPR # Inter-Domain Policy Routing [Martha_Steenstrup] 104 # Protocol 105 xtp 36 XTP # XTP [Greg_Chesson] 106 ddp 37 DDP # Datagram Delivery Protocol [Wesley_Craig] 107 idpr-cmtp 38 IDPR-CMTP # IDPR Control Message [Martha_Steenstrup] 108 # Transport Proto 109 tp++ 39 TP++ # TP++ Transport Protocol [Dirk_Fromhein] 110 il 40 IL # IL Transport Protocol [Dave_Presotto] 111 ipv6 41 IPv6 # IPv6 encapsulation [RFC2473] 112 sdrp 42 SDRP # Source Demand Routing [Deborah_Estrin] 113 # Protocol 114 ipv6-route 43 IPv6-Route # Routing Header for IPv6 Y [Steve_Deering] 115 ipv6-frag 44 IPv6-Frag # Fragment Header for IPv6 Y [Steve_Deering] 116 idrp 45 IDRP # Inter-Domain Routing [Sue_Hares] 117 # Protocol 118 rsvp 46 RSVP # Reservation Protocol [RFC2205][RFC3209][Bob_Braden] 119 gre 47 GRE # Generic Routing [RFC2784][Tony_Li] 120 # Encapsulation 121 dsr 48 DSR # Dynamic Source Routing [RFC4728] 122 # Protocol 123 bna 49 BNA # BNA [Gary Salamon] 124 esp 50 ESP # Encap Security Payload Y [RFC4303] 125 ah 51 AH # Authentication Header Y [RFC4302] 126 i-nlsp 52 I-NLSP # Integrated Net Layer [K_Robert_Glenn] 127 # Security TUBA 128 swipe 53 SWIPE # (deprecated) IP with Encryption [John_Ioannidis] 129 narp 54 NARP # NBMA Address Resolution [RFC1735] 130 # Protocol 131 mobile 55 MOBILE # IP Mobility [Charlie_Perkins] 132 # Transport Layer Security 133 tlsp 56 TLSP # Protocol using Kryptonet key [Christer_Oberg] 134 # management 135 skip 57 SKIP # SKIP [Tom_Markson] 136 ipv6-icmp 58 IPv6-ICMP # ICMP for IPv6 [RFC8200] 137 ipv6-nonxt 59 IPv6-NoNxt # No Next Header for IPv6 [RFC8200] 138 ipv6-opts 60 IPv6-Opts # Destination Options for IPv6 Y [RFC8200] 139 # 61 any host internal protocol [Internet_Assigned_Numbers_Authority] 140 cftp 62 CFTP # CFTP [Forsdick, H., "CFTP", Network Message, Bolt Beranek and Newman, January 141 # 1982.][Harry_Forsdick] 142 # 63 any local network [Internet_Assigned_Numbers_Authority] 143 sat-expak 64 SAT-EXPAK # SATNET and Backroom EXPAK [Steven_Blumenthal] 144 kryptolan 65 KRYPTOLAN # Kryptolan [Paul Liu] 145 rvd 66 RVD # MIT Remote Virtual Disk [Michael_Greenwald] 146 # Protocol 147 ippc 67 IPPC # Internet Pluribus Packet [Steven_Blumenthal] 148 # Core 149 # 68 any distributed file system [Internet_Assigned_Numbers_Authority] 150 sat-mon 69 SAT-MON # SATNET Monitoring [Steven_Blumenthal] 151 visa 70 VISA # VISA Protocol [Gene_Tsudik] 152 ipcv 71 IPCV # Internet Packet Core Utility [Steven_Blumenthal] 153 cpnx 72 CPNX # Computer Protocol Network [David Mittnacht] 154 # Executive 155 cphb 73 CPHB # Computer Protocol Heart Beat [David Mittnacht] 156 wsn 74 WSN # Wang Span Network [Victor Dafoulas] 157 pvp 75 PVP # Packet Video Protocol [Steve_Casner] 158 br-sat-mon 76 BR-SAT-MON # Backroom SATNET Monitoring [Steven_Blumenthal] 159 sun-nd 77 SUN-ND # SUN ND PROTOCOL-Temporary [William_Melohn] 160 wb-mon 78 WB-MON # WIDEBAND Monitoring [Steven_Blumenthal] 161 wb-expak 79 WB-EXPAK # WIDEBAND EXPAK [Steven_Blumenthal] 162 iso-ip 80 ISO-IP # ISO Internet Protocol [Marshall_T_Rose] 163 vmtp 81 VMTP # VMTP [Dave_Cheriton] 164 secure-vmtp 82 SECURE-VMTP # SECURE-VMTP [Dave_Cheriton] 165 vines 83 VINES # VINES [Brian Horn] 166 ttp 84 TTP iptm IPTM # Transaction Transport [Jim_Stevens] 167 # Protocol 168 #iptm 84 IPTM # Internet Protocol Traffic [Jim_Stevens] 169 # Manager 170 nsfnet-igp 85 NSFNET-IGP # NSFNET-IGP [Hans_Werner_Braun] 171 dgp 86 DGP # Dissimilar Gateway Protocol [M/A-COM Government Systems, "Dissimilar Gateway Protocol Specification, 172 # Draft Version", Contract no. CS901145, November 16, 1987.][Mike_Little] 173 tcf 87 TCF # TCF [Guillermo_A_Loyola] 174 eigrp 88 EIGRP # EIGRP [RFC7868] 175 ospfigp 89 OSPFIGP # OSPFIGP [RFC1583][RFC2328][RFC5340][John_Moy] 176 # [Welch, B., "The Sprite Remote Procedure Call System", Technical Report, 177 sprite-rpc 90 Sprite-RPC # Sprite RPC Protocol UCB/Computer Science Dept., 86/302, University of California at Berkeley, 178 # June 1986.][Bruce Willins] 179 larp 91 LARP # Locus Address Resolution [Brian Horn] 180 # Protocol 181 mtp 92 MTP # Multicast Transport Protocol [Susie_Armstrong] 182 ax.25 93 AX.25 # AX.25 Frames [Brian_Kantor] 183 ipip 94 IPIP # IP-within-IP Encapsulation [John_Ioannidis] 184 # Protocol 185 micp 95 MICP # (deprecated) Mobile Internetworking [John_Ioannidis] 186 # Control Pro. 187 scc-sp 96 SCC-SP # Semaphore Communications [Howard_Hart] 188 # Sec. Pro. 189 etherip 97 ETHERIP # Ethernet-within-IP [RFC3378] 190 # Encapsulation 191 encap 98 ENCAP # Encapsulation Header [RFC1241][Robert_Woodburn] 192 # 99 any private encryption [Internet_Assigned_Numbers_Authority] 193 # scheme 194 gmtp 100 GMTP # GMTP [[RXB5]] 195 ifmp 101 IFMP # Ipsilon Flow Management [Bob_Hinden][November 1995, 1997.] 196 # Protocol 197 pnni 102 PNNI # PNNI over IP [Ross_Callon] 198 pim 103 PIM # Protocol Independent [RFC7761][Dino_Farinacci] 199 # Multicast 200 aris 104 ARIS # ARIS [Nancy_Feldman] 201 scps 105 SCPS # SCPS [Robert_Durst] 202 qnx 106 QNX # QNX [Michael_Hunter] 203 a/n 107 A/N # Active Networks [Bob_Braden] 204 ipcomp 108 IPComp # IP Payload Compression [RFC2393] 205 # Protocol 206 snp 109 SNP # Sitara Networks Protocol [Manickam_R_Sridhar] 207 compaq-peer 110 Compaq-Peer # Compaq Peer Protocol [Victor_Volpe] 208 ipx-in-ip 111 IPX-in-IP # IPX in IP [CJ_Lee] 209 vrrp 112 VRRP carp # Virtual Router Redundancy [RFC5798] 210 # Protocol 211 pgm 113 PGM # PGM Reliable Transport [Tony_Speakman] 212 # Protocol 213 # 114 any 0-hop protocol [Internet_Assigned_Numbers_Authority] 214 l2tp 115 L2TP # Layer Two Tunneling Protocol [RFC3931][Bernard_Aboba] 215 ddx 116 DDX # D-II Data Exchange (DDX) [John_Worley] 216 iatp 117 IATP # Interactive Agent Transfer [John_Murphy] 217 # Protocol 218 stp 118 STP # Schedule Transfer Protocol [Jean_Michel_Pittet] 219 srp 119 SRP # SpectraLink Radio Protocol [Mark_Hamilton] 220 uti 120 UTI # UTI [Peter_Lothberg] 221 smp 121 SMP # Simple Message Protocol [Leif_Ekblad] 222 sm 122 SM # (deprecated) Simple Multicast Protocol [Jon_Crowcroft][draft-perlman-simple-multicast] 223 ptp 123 PTP # Performance Transparency [Michael_Welzl] 224 # Protocol 225 isis 124 ISIS # over IPv4 [Tony_Przygienda] 226 fire 125 FIRE # [Criag_Partridge] 227 crtp 126 CRTP # Combat Radio Transport [Robert_Sautter] 228 # Protocol 229 crudp 127 CRUDP # Combat Radio User Datagram [Robert_Sautter] 230 sscopmce 128 SSCOPMCE # [Kurt_Waber] 231 iplt 129 IPLT # [[Hollbach]] 232 sps 130 SPS # Secure Packet Shield [Bill_McIntosh] 233 pipe 131 PIPE # Private IP Encapsulation [Bernhard_Petri] 234 # within IP 235 sctp 132 SCTP # Stream Control Transmission [Randall_R_Stewart] 236 # Protocol 237 fc 133 FC # Fibre Channel [Murali_Rajagopal][RFC6172] 238 rsvp-e2e-ignore 134 RSVP-E2E-IGNORE # [RFC3175] 239 mobility 135 Mobility # Header Y [RFC6275] 240 udplite 136 UDPLite # [RFC3828] 241 mpls-in-ip 137 MPLS-in-IP # [RFC4023] 242 manet 138 MANET # MANET Protocols [RFC5498] 243 hip 139 HIP # Host Identity Protocol Y [RFC7401] 244 shim6 140 Shim6 # Shim6 Protocol Y [RFC5533] 245 wesp 141 WESP # Wrapped Encapsulating [RFC5840] 246 # Security Payload 247 rohc 142 ROHC # Robust Header Compression [RFC5858] 248 ethernet 143 Ethernet # Ethernet [RFC8986] 249 aggfrag 144 AGGFRAG # AGGFRAG encapsulation [RFC-ietf-ipsecme-iptfs-19] 250 # payload for ESP 251 # 145-252 Unassigned [Internet_Assigned_Numbers_Authority] 252 pfsync 240 PFSYNC # PF Synchronization 253 # 253 Use for experimentation and Y [RFC3692] 254 # testing 255 # 254 Use for experimentation and Y [RFC3692] 256 # testing 257 reserved 255 Reserved # [Internet_Assigned_Numbers_Authority] 258 # 259 # Contact Information 260 # 261 # ID Name Contact URI Last Updated 262 # [Barry_Boehm] Barry Boehm mailto:boehm&arpa.mil 263 # [Barry_Howard] Barry Howard mailto:Howard&nmfecc.llnl.gov 264 # [Bernard_Aboba] Bernard Aboba mailto:bernardaµsoft.com 1998-04 265 # [Bernhard_Petri] Bernhard Petri mailto:bernhard.petri&siemens.com 2012-07-09 266 # [Bill_McIntosh] Bill McIntosh mailto:BMcIntosh&fortresstech.com 267 # [Bob_Braden] Bob Braden mailto:braden&isi.edu 1997-07 268 # [Bob_Hinden] Bob Hinden mailto:bob.hinden&gmail.com 2013-02-17 269 # [Brian_Kantor] Brian Kantor mailto:brian&ucsd.edu 270 # [CJ_Lee] CJ Lee mailto:cj_lee&novell.com 1997-10 271 # [Charlie_Perkins] Charlie Perkins mailto:perk&watson.ibm.com 1994-10 272 # [Christer_Oberg] Christer Oberg mailto:chg&bull.se 1994-10 273 # [Criag_Partridge] Criag Partridge mailto:craig&bbn.com 1999-08 274 # [Dave_Cheriton] Dave Cheriton mailto:cheriton&pescadero.stanford.edu 275 # [Dave_Presotto] Dave Presotto mailto:presotto&plan9.att.com 1995-07 276 # [David_Clark] David Clark mailto:ddc&lcs.mit.edu 277 # [David_Mills] David Mills mailto:Mills&huey.udel.edu 278 # [Deborah_Estrin] Deborah Estrin mailto:estrin&usc.edu 279 # [Dino_Farinacci] Dino Farinacci mailto:dino&cisco.com 1996-03 280 # [Dirk_Fromhein] Dirk Fromhein mailto:df&watershed.com 281 # [Gene_Tsudik] Gene Tsudik mailto:tsudik&usc.edu 282 # [Greg_Chesson] Greg Chesson mailto:Greg&sgi.com 283 # [Guillermo_A_Loyola] Guillermo A. Loyola mailto:LOYOLA&ibm.com 284 # [Hans_Werner_Braun] Hans-Werner Braun mailto:HWB&mcr.umich.edu 285 # [Harry_Forsdick] Harry Forsdick mailto:Forsdick&bbn.com 286 # [Howard_Hart] Howard Hart mailto:hch&hybrid.com 287 # [Internet_Assigned_Numbers_Authority] Internet Assigned Numbers Authority mailto:iana&iana.org 1995-06 288 # [J_Noel_Chiappa] J. Noel Chiappa mailto:JNC&xx.lcs.mit.edu 289 # [Jack_Haverty] Jack Haverty mailto:jhaverty&oracle.com 290 # [Jean_Michel_Pittet] Jean-Michel Pittet mailto:jmp&gandalf.engr.sgi.com 1998-11 291 # [Jim_Stevens] Jim Stevens mailto:jasteven&rockwellcollins.com 2011-01-26 292 # [John_Ioannidis] John Ioannidis mailto:ji&tla.org 2015-01-06 293 # [John_Moy] John Moy mailto:jmoy&proteon.com 294 # [John_Murphy] John Murphy mailto:john.m.murphy&mci.com 1998-10 295 # [John_Worley] John Worley mailto:worley&milehigh.net 1998-06 296 # [Jon_Crowcroft] Jon Crowcroft mailto:jon&cs.ucl.ac.uk 1999-06 297 # [Jon_Postel] Jon Postel mailto:postel&isi.edu 298 # [K_Robert_Glenn] K. Robert Glenn mailto:glenn&osi.ncsl.nist.gov 299 # [Kurt_Waber] Kurt Waber mailto:kurt.waber&swisscom.com 1999-08 300 # [Leif_Ekblad] Leif Ekblad mailto:leif&rdos.net 2012-08-21 301 # [Manickam_R_Sridhar] Manickam R. Sridhar mailto:msridhar&sitaranetworks.com 1997-09 302 # [Mark_Hamilton] Mark Hamilton mailto:mah&spectralink.com 1998-11 303 # [Marshall_T_Rose] Marshall T. Rose mailto:mrose&dbc.mtview.ca.us 304 # [Martha_Steenstrup] Martha Steenstrup mailto:MSteenst&bbn.com 305 # [Michael_Greenwald] Michael Greenwald mailto:Greenwald&scrc-stony-brook.symbolics.com 306 # [Michael_Hunter] Michael Hunter mailto:mphunter&qnx.com 1997-07 307 # [Michael_Welzl] Michael Welzl mailto:michael&tk.uni-linz.ac.at 1999-08 308 # [Mike_Little] Mike Little mailto:little&macom4.arpa 309 # [Murali_Rajagopal] Murali Rajagopal mailto:murali&gadzoox.com 2000-05 310 # [Nancy_Feldman] Nancy Feldman mailto:nkf&vnet.ibm.com 1997-01 311 # [Peter_Lothberg] Peter Lothberg mailto:roll&stupi.se 1999-03 312 # [Randall_R_Stewart] Randall R. Stewart mailto:rrs&lakerest.net 2000-04 313 # [Robert_Durst] Robert Durst mailto:durst&mitre.org 1997-03 314 # [Robert_Sautter] Robert Sautter mailto:rsautter&acdnj.itt.com 1999-08 315 # [Robert_W_Scheifler] Robert W. Scheifler mailto:rscheifler&comcast.net 2015-10-06 316 # [Robert_Woodburn] Robert Woodburn mailto:woody&cseic.saic.com 317 # [Ross_Callon] Ross Callon mailto:rcallon&baynetworks.com 1995-12 318 # [Steve_Casner] Steve Casner mailto:casner&isi.edu 319 # [Steve_Chipman] Steve Chipman mailto:Chipman&f.bbn.com 320 # [Steve_Deering] Steve Deering mailto:deering&parc.xerox.com 1995-03 321 # [Steven_Blumenthal] Steven Blumenthal mailto:BLUMENTHAL&vax.bbn.com 322 # [Stuart_A_Friedberg] Stuart A. Friedberg mailto:stuart&cs.wisc.edu 323 # [Sue_Hares] Sue Hares mailto:skh&merit.edu 324 # [Susie_Armstrong] Susie Armstrong mailto:Armstrong.wbst128&xerox.com 325 # [Tom_Markson] Tom Markson mailto:markson&osmosys.ingog.com 1995-09 326 # [Tony_Ballardie] Tony Ballardie mailto:A.Ballardie&cs.ucl.ac.uk 327 # [Tony_Li] Tony Li mailto:tony.li&tony.li 2012-10-17 328 # [Tony_Przygienda] Tony Przygienda mailto:prz&siara.com 1999-08 329 # [Tony_Speakman] Tony Speakman mailto:speakman&cisco.com 1998-01 330 # [Trudy_Miller] Trudy Miller mailto:Trudy&acc.com 331 # [Victor_Volpe] Victor Volpe mailto:vvolpe&smtp.microcom.com 1997-10 332 # [Wesley_Craig] Wesley Craig mailto:Wesley.Craig&terminator.cc.umich.edu 333 # [William_Melohn] William Melohn mailto:Melohn&sun.com 334 # [Zaw_Sing_Su] Zaw-Sing Su mailto:ZSu&tsca.istc.sri. 335 # 336 # Licensing Terms 337
Indexes created Sat Nov 08 18:09:48 GMT 2025