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 48hopopt 0 HOPOPT # IPv6 Hop-by-Hop Option Y [RFC8200] 49icmp 1 ICMP # Internet Control Message [RFC792] 50igmp 2 IGMP # Internet Group Management [RFC1112] 51ggp 3 GGP # Gateway-to-Gateway [RFC823] 52ipv4 4 IPv4 # IPv4 encapsulation [RFC2003] 53st 5 ST # Stream [RFC1190][RFC1819] 54tcp 6 TCP # Transmission Control [RFC9293] 55cbt 7 CBT # CBT [Tony_Ballardie] 56egp 8 EGP # Exterior Gateway Protocol [RFC888][David_Mills] 57# any private interior gateway 58igp 9 IGP # (used by Cisco for their [Internet_Assigned_Numbers_Authority] 59# IGRP) 60bbn-rcc-mon 10 BBN-RCC-MON # BBN RCC Monitoring [Steve_Chipman] 61nvp-ii 11 NVP-II # Network Voice Protocol [RFC741][Steve_Casner] 62# [Boggs, D., J. Shoch, E. Taft, and R. Metcalfe, "PUP: An Internetwork 63pup 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]] 66argus 13 ARGUS # (deprecated) ARGUS [Robert_W_Scheifler] 67emcon 14 EMCON # EMCON [<mystery contact>] 68xnet 15 XNET # Cross Net Debugger [Haverty, J., "XNET Formats for Internet Protocol Version 4", IEN 158, 69# October 1980.][Jack_Haverty] 70chaos 16 CHAOS # Chaos [J_Noel_Chiappa] 71udp 17 UDP # User Datagram [RFC768][Jon_Postel] 72mux 18 MUX # Multiplexing [Cohen, D. and J. Postel, "Multiplexing Protocol", IEN 90, 73# USC/Information Sciences Institute, May 1979.][Jon_Postel] 74dcn-meas 19 DCN-MEAS # DCN Measurement Subsystems [David_Mills] 75hmp 20 HMP # Host Monitoring [RFC869][Bob_Hinden] 76prm 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 81xns-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]] 86trunk-1 23 TRUNK-1 # Trunk-1 [Barry_Boehm] 87trunk-2 24 TRUNK-2 # Trunk-2 [Barry_Boehm] 88leaf-1 25 LEAF-1 # Leaf-1 [Barry_Boehm] 89leaf-2 26 LEAF-2 # Leaf-2 [Barry_Boehm] 90rdp 27 RDP # Reliable Data Protocol [RFC908][Bob_Hinden] 91irtp 28 IRTP # Internet Reliable [RFC938][Trudy_Miller] 92# Transaction 93iso-tp4 29 ISO-TP4 # ISO Transport Protocol Class [RFC905][<mystery contact>] 94# 4 95netblt 30 NETBLT # Bulk Data Transfer Protocol [RFC969][David_Clark] 96# MFE Network Services [Shuttleworth, B., "A Documentary of MFENet, a National Computer 97mfe-nsp 31 MFE-NSP # Protocol Network", UCRL-52317, Lawrence Livermore Labs, Livermore, California, 98# June 1977.][Barry_Howard] 99merit-inp 32 MERIT-INP # MERIT Internodal Protocol [Hans_Werner_Braun] 100dccp 33 DCCP # Datagram Congestion Control [RFC4340] 101# Protocol 1023pc 34 3PC # Third Party Connect Protocol [Stuart_A_Friedberg] 103idpr 35 IDPR # Inter-Domain Policy Routing [Martha_Steenstrup] 104# Protocol 105xtp 36 XTP # XTP [Greg_Chesson] 106ddp 37 DDP # Datagram Delivery Protocol [Wesley_Craig] 107idpr-cmtp 38 IDPR-CMTP # IDPR Control Message [Martha_Steenstrup] 108# Transport Proto 109tp++ 39 TP++ # TP++ Transport Protocol [Dirk_Fromhein] 110il 40 IL # IL Transport Protocol [Dave_Presotto] 111ipv6 41 IPv6 # IPv6 encapsulation [RFC2473] 112sdrp 42 SDRP # Source Demand Routing [Deborah_Estrin] 113# Protocol 114ipv6-route 43 IPv6-Route # Routing Header for IPv6 Y [Steve_Deering] 115ipv6-frag 44 IPv6-Frag # Fragment Header for IPv6 Y [Steve_Deering] 116idrp 45 IDRP # Inter-Domain Routing [Sue_Hares] 117# Protocol 118rsvp 46 RSVP # Reservation Protocol [RFC2205][RFC3209][Bob_Braden] 119gre 47 GRE # Generic Routing [RFC2784][Tony_Li] 120# Encapsulation 121dsr 48 DSR # Dynamic Source Routing [RFC4728] 122# Protocol 123bna 49 BNA # BNA [Gary Salamon] 124esp 50 ESP # Encap Security Payload Y [RFC4303] 125ah 51 AH # Authentication Header Y [RFC4302] 126i-nlsp 52 I-NLSP # Integrated Net Layer [K_Robert_Glenn] 127# Security TUBA 128swipe 53 SWIPE # (deprecated) IP with Encryption [John_Ioannidis] 129narp 54 NARP # NBMA Address Resolution [RFC1735] 130# Protocol 131mobile 55 MOBILE # IP Mobility [Charlie_Perkins] 132# Transport Layer Security 133tlsp 56 TLSP # Protocol using Kryptonet key [Christer_Oberg] 134# management 135skip 57 SKIP # SKIP [Tom_Markson] 136ipv6-icmp 58 IPv6-ICMP # ICMP for IPv6 [RFC8200] 137ipv6-nonxt 59 IPv6-NoNxt # No Next Header for IPv6 [RFC8200] 138ipv6-opts 60 IPv6-Opts # Destination Options for IPv6 Y [RFC8200] 139# 61 any host internal protocol [Internet_Assigned_Numbers_Authority] 140cftp 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] 143sat-expak 64 SAT-EXPAK # SATNET and Backroom EXPAK [Steven_Blumenthal] 144kryptolan 65 KRYPTOLAN # Kryptolan [Paul Liu] 145rvd 66 RVD # MIT Remote Virtual Disk [Michael_Greenwald] 146# Protocol 147ippc 67 IPPC # Internet Pluribus Packet [Steven_Blumenthal] 148# Core 149# 68 any distributed file system [Internet_Assigned_Numbers_Authority] 150sat-mon 69 SAT-MON # SATNET Monitoring [Steven_Blumenthal] 151visa 70 VISA # VISA Protocol [Gene_Tsudik] 152ipcv 71 IPCV # Internet Packet Core Utility [Steven_Blumenthal] 153cpnx 72 CPNX # Computer Protocol Network [David Mittnacht] 154# Executive 155cphb 73 CPHB # Computer Protocol Heart Beat [David Mittnacht] 156wsn 74 WSN # Wang Span Network [Victor Dafoulas] 157pvp 75 PVP # Packet Video Protocol [Steve_Casner] 158br-sat-mon 76 BR-SAT-MON # Backroom SATNET Monitoring [Steven_Blumenthal] 159sun-nd 77 SUN-ND # SUN ND PROTOCOL-Temporary [William_Melohn] 160wb-mon 78 WB-MON # WIDEBAND Monitoring [Steven_Blumenthal] 161wb-expak 79 WB-EXPAK # WIDEBAND EXPAK [Steven_Blumenthal] 162iso-ip 80 ISO-IP # ISO Internet Protocol [Marshall_T_Rose] 163vmtp 81 VMTP # VMTP [Dave_Cheriton] 164secure-vmtp 82 SECURE-VMTP # SECURE-VMTP [Dave_Cheriton] 165vines 83 VINES # VINES [Brian Horn] 166ttp 84 TTP iptm IPTM # Transaction Transport [Jim_Stevens] 167# Protocol 168#iptm 84 IPTM # Internet Protocol Traffic [Jim_Stevens] 169# Manager 170nsfnet-igp 85 NSFNET-IGP # NSFNET-IGP [Hans_Werner_Braun] 171dgp 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] 173tcf 87 TCF # TCF [Guillermo_A_Loyola] 174eigrp 88 EIGRP # EIGRP [RFC7868] 175ospfigp 89 OSPFIGP # OSPFIGP [RFC1583][RFC2328][RFC5340][John_Moy] 176# [Welch, B., "The Sprite Remote Procedure Call System", Technical Report, 177sprite-rpc 90 Sprite-RPC # Sprite RPC Protocol UCB/Computer Science Dept., 86/302, University of California at Berkeley, 178# June 1986.][Bruce Willins] 179larp 91 LARP # Locus Address Resolution [Brian Horn] 180# Protocol 181mtp 92 MTP # Multicast Transport Protocol [Susie_Armstrong] 182ax.25 93 AX.25 # AX.25 Frames [Brian_Kantor] 183ipip 94 IPIP # IP-within-IP Encapsulation [John_Ioannidis] 184# Protocol 185micp 95 MICP # (deprecated) Mobile Internetworking [John_Ioannidis] 186# Control Pro. 187scc-sp 96 SCC-SP # Semaphore Communications [Howard_Hart] 188# Sec. Pro. 189etherip 97 ETHERIP # Ethernet-within-IP [RFC3378] 190# Encapsulation 191encap 98 ENCAP # Encapsulation Header [RFC1241][Robert_Woodburn] 192# 99 any private encryption [Internet_Assigned_Numbers_Authority] 193# scheme 194gmtp 100 GMTP # GMTP [[RXB5]] 195ifmp 101 IFMP # Ipsilon Flow Management [Bob_Hinden][November 1995, 1997.] 196# Protocol 197pnni 102 PNNI # PNNI over IP [Ross_Callon] 198pim 103 PIM # Protocol Independent [RFC7761][Dino_Farinacci] 199# Multicast 200aris 104 ARIS # ARIS [Nancy_Feldman] 201scps 105 SCPS # SCPS [Robert_Durst] 202qnx 106 QNX # QNX [Michael_Hunter] 203a/n 107 A/N # Active Networks [Bob_Braden] 204ipcomp 108 IPComp # IP Payload Compression [RFC2393] 205# Protocol 206snp 109 SNP # Sitara Networks Protocol [Manickam_R_Sridhar] 207compaq-peer 110 Compaq-Peer # Compaq Peer Protocol [Victor_Volpe] 208ipx-in-ip 111 IPX-in-IP # IPX in IP [CJ_Lee] 209vrrp 112 VRRP carp # Virtual Router Redundancy [RFC5798] 210# Protocol 211pgm 113 PGM # PGM Reliable Transport [Tony_Speakman] 212# Protocol 213# 114 any 0-hop protocol [Internet_Assigned_Numbers_Authority] 214l2tp 115 L2TP # Layer Two Tunneling Protocol [RFC3931][Bernard_Aboba] 215ddx 116 DDX # D-II Data Exchange (DDX) [John_Worley] 216iatp 117 IATP # Interactive Agent Transfer [John_Murphy] 217# Protocol 218stp 118 STP # Schedule Transfer Protocol [Jean_Michel_Pittet] 219srp 119 SRP # SpectraLink Radio Protocol [Mark_Hamilton] 220uti 120 UTI # UTI [Peter_Lothberg] 221smp 121 SMP # Simple Message Protocol [Leif_Ekblad] 222sm 122 SM # (deprecated) Simple Multicast Protocol [Jon_Crowcroft][draft-perlman-simple-multicast] 223ptp 123 PTP # Performance Transparency [Michael_Welzl] 224# Protocol 225isis 124 ISIS # over IPv4 [Tony_Przygienda] 226fire 125 FIRE # [Criag_Partridge] 227crtp 126 CRTP # Combat Radio Transport [Robert_Sautter] 228# Protocol 229crudp 127 CRUDP # Combat Radio User Datagram [Robert_Sautter] 230sscopmce 128 SSCOPMCE # [Kurt_Waber] 231iplt 129 IPLT # [[Hollbach]] 232sps 130 SPS # Secure Packet Shield [Bill_McIntosh] 233pipe 131 PIPE # Private IP Encapsulation [Bernhard_Petri] 234# within IP 235sctp 132 SCTP # Stream Control Transmission [Randall_R_Stewart] 236# Protocol 237fc 133 FC # Fibre Channel [Murali_Rajagopal][RFC6172] 238rsvp-e2e-ignore 134 RSVP-E2E-IGNORE # [RFC3175] 239mobility 135 Mobility # Header Y [RFC6275] 240udplite 136 UDPLite # [RFC3828] 241mpls-in-ip 137 MPLS-in-IP # [RFC4023] 242manet 138 MANET # MANET Protocols [RFC5498] 243hip 139 HIP # Host Identity Protocol Y [RFC7401] 244shim6 140 Shim6 # Shim6 Protocol Y [RFC5533] 245wesp 141 WESP # Wrapped Encapsulating [RFC5840] 246# Security Payload 247rohc 142 ROHC # Robust Header Compression [RFC5858] 248ethernet 143 Ethernet # Ethernet [RFC8986] 249aggfrag 144 AGGFRAG # AGGFRAG encapsulation [RFC-ietf-ipsecme-iptfs-19] 250# payload for ESP 251# 145-252 Unassigned [Internet_Assigned_Numbers_Authority] 252pfsync 240 PFSYNC # PF Synchronization 253# 253 Use for experimentation and Y [RFC3692] 254# testing 255# 254 Use for experimentation and Y [RFC3692] 256# testing 257reserved 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