# See also: protocols(5), http://www.iana.org/assignments/protocol-numbers/protocol-numbers.xhtml # # # PROTOCOL NUMBERS # # (last updated 28 March 2006) # # In the Internet Protocol version 4 (IPv4) [RFC791] there is a field, # called "Protocol", to identify the next level protocol. This is an 8 # bit field. In Internet Protocol version 6 (IPv6) [RFC1883] this field # is called the "Next Header" field. # # Assigned Internet Protocol Numbers # # Decimal Keyword Protocol References # ------- ------- -------- ---------- # protocol num aliases # comments hopopt 0 HOPOPT # IPv6 Hop-by-Hop Option [RFC1883] icmp 1 ICMP # Internet Control Message [RFC792] igmp 2 IGMP # Internet Group Management [RFC1112] ggp 3 GGP # Gateway-to-Gateway [RFC823] ipv4 4 IPv4 # IP in IP (encapsulation) [RFC2003] st 5 ST # Stream [RFC1190,RFC1819] tcp 6 TCP # Transmission Control [RFC793] cbt 7 CBT # CBT [Ballardie] egp 8 EGP # Exterior Gateway Protocol [RFC888,DLM1] igp 9 IGP # any private interior gateway [IANA] # (used by Cisco for their IGRP) bbn-rcc-mon 10 BBN-RCC-MON # BBN RCC Monitoring [SGC] nvp-ii 11 NVP-II # Network Voice Protocol [RFC741,SC3] pup 12 PUP # PUP [PUP,XEROX] argus 13 ARGUS # ARGUS [RWS4] emcon 14 EMCON # EMCON [BN7] xnet 15 XNET # Cross Net Debugger [IEN158,JFH2] chaos 16 CHAOS # Chaos [NC3] udp 17 UDP # User Datagram [RFC768,JBP] mux 18 MUX # Multiplexing [IEN90,JBP] dcn-meas 19 DCN-MEAS # DCN Measurement Subsystems [DLM1] hmp 20 HMP # Host Monitoring [RFC869,RH6] prm 21 PRM # Packet Radio Measurement [ZSU] xns-idp 22 XNS-IDP # XEROX NS IDP [ETHERNET,XEROX] trunk-1 23 TRUNK-1 # Trunk-1 [BWB6] trunk-2 24 TRUNK-2 # Trunk-2 [BWB6] leaf-1 25 LEAF-1 # Leaf-1 [BWB6] leaf-2 26 LEAF-2 # Leaf-2 [BWB6] rdp 27 RDP # Reliable Data Protocol [RFC908,RH6] irtp 28 IRTP # Internet Reliable Transaction [RFC938,TXM] iso-tp4 29 ISO-TP4 # ISO Transport Protocol Class 4 [RFC905,RC77] netblt 30 NETBLT # Bulk Data Transfer Protocol [RFC969,DDC1] mfe-nsp 31 MFE-NSP # MFE Network Services Protocol [MFENET,BCH2] merit-inp 32 MERIT-INP # MERIT Internodal Protocol [HWB] dccp 33 DCCP # Datagram Congestion Control Protocol [RFC-ietf-dccp-spec-11.txt] 3pc 34 3PC # Third Party Connect Protocol [SAF3] idpr 35 IDPR # Inter-Domain Policy Routing Protocol [MXS1] xtp 36 XTP # XTP [GXC] ddp 37 DDP # Datagram Delivery Protocol [WXC] idpr-cmtp 38 IDPR-CMTP # IDPR Control Message Transport Proto [MXS1] tp++ 39 TP++ # TP++ Transport Protocol [DXF] il 40 IL # IL Transport Protocol [Presotto] ipv6 41 IPv6 # Ipv6 [Deering] sdrp 42 SDRP # Source Demand Routing Protocol [DXE1] ipv6-route 43 IPv6-Route # Routing Header for IPv6 [Deering] ipv6-frag 44 IPv6-Frag # Fragment Header for IPv6 [Deering] idrp 45 IDRP # Inter-Domain Routing Protocol [Sue Hares] rsvp 46 RSVP # Reservation Protocol [Bob Braden] gre 47 GRE # General Routing Encapsulation [Tony Li] mhrp 48 MHRP # Mobile Host Routing Protocol[David Johnson] bna 49 BNA # BNA [Gary Salamon] esp 50 ESP # Encap Security Payload [RFC2406] ah 51 AH # Authentication Header [RFC2402] i-nlsp 52 I-NLSP # Integrated Net Layer Security TUBA [GLENN] swipe 53 SWIPE # IP with Encryption [JI6] narp 54 NARP # NBMA Address Resolution Protocol [RFC1735] mobile 55 MOBILE # IP Mobility [Perkins] tlsp 56 TLSP # Transport Layer Security Protocol [Oberg] # using Kryptonet key management skip 57 SKIP # SKIP [Markson] ipv6-icmp 58 IPv6-ICMP # ICMP for IPv6 [RFC1883] ipv6-nonxt 59 IPv6-NoNxt # No Next Header for IPv6 [RFC1883] ipv6-opts 60 IPv6-Opts # Destination Options for IPv6 [RFC1883] # 61 any host internal protocol [IANA] cftp 62 CFTP # CFTP [CFTP,HCF2] # 63 any local network [IANA] sat-expak 64 SAT-EXPAK # SATNET and Backroom EXPAK [SHB] kryptolan 65 KRYPTOLAN # Kryptolan [PXL1] rvd 66 RVD # MIT Remote Virtual Disk Protocol [MBG] ippc 67 IPPC # Internet Pluribus Packet Core [SHB] # 68 any distributed file system [IANA] sat-mon 69 SAT-MON # SATNET Monitoring [SHB] visa 70 VISA # VISA Protocol [GXT1] ipcv 71 IPCV # Internet Packet Core Utility [SHB] cpnx 72 CPNX # Computer Protocol Network Executive [DXM2] cphb 73 CPHB # Computer Protocol Heart Beat [DXM2] wsn 74 WSN # Wang Span Network [VXD] pvp 75 PVP # Packet Video Protocol [SC3] br-sat-mon 76 BR-SAT-MON # Backroom SATNET Monitoring [SHB] sun-nd 77 SUN-ND # SUN ND PROTOCOL-Temporary [WM3] wb-mon 78 WB-MON # WIDEBAND Monitoring [SHB] wb-expak 79 WB-EXPAK # WIDEBAND EXPAK [SHB] iso-ip 80 ISO-IP # ISO Internet Protocol [MTR] vmtp 81 VMTP # VMTP [DRC3] secure-vmtp 82 SECURE-VMTP # SECURE-VMTP [DRC3] vines 83 VINES # VINES [BXH] ttp 84 TTP # TTP [JXS] nsfnet-igp 85 NSFNET-IGP # NSFNET-IGP [HWB] dgp 86 DGP # Dissimilar Gateway Protocol [DGP,ML109] tcf 87 TCF # TCF [GAL5] eigrp 88 EIGRP # EIGRP [CISCO,GXS] ospfigp 89 OSPFIGP # OSPFIGP [RFC1583,JTM4] sprite-rpc 90 Sprite-RPC # Sprite RPC Protocol [SPRITE,BXW] larp 91 LARP # Locus Address Resolution Protocol [BXH] mtp 92 MTP # Multicast Transport Protocol [SXA] ax.25 93 AX.25 # AX.25 Frames [BK29] ipip 94 IPIP # IP-within-IP Encapsulation Protocol [JI6] micp 95 MICP # Mobile Internetworking Control Pro. [JI6] scc-sp 96 SCC-SP # Semaphore Communications Sec. Pro. [HXH] etherip 97 ETHERIP # Ethernet-within-IP Encapsulation [RFC3378] encap 98 ENCAP # Encapsulation Header [RFC1241,RXB3] # 99 any private encryption scheme [IANA] gmtp 100 GMTP # GMTP [RXB5] ifmp 101 IFMP # Ipsilon Flow Management Protocol [Hinden] pnni 102 PNNI # PNNI over IP [Callon] pim 103 PIM # Protocol Independent Multicast [Farinacci] aris 104 ARIS # ARIS [Feldman] scps 105 SCPS # SCPS [Durst] qnx 106 QNX # QNX [Hunter] a/n 107 A/N # Active Networks [Braden] ipcomp 108 IPComp # IP Payload Compression Protocol [RFC2393] snp 109 SNP # Sitara Networks Protocol [Sridhar] compaq-peer 110 Compaq-Peer # Compaq Peer Protocol [Volpe] ipx-in-ip 111 IPX-in-IP # IPX in IP [Lee] vrrp 112 VRRP # Virtual Router Redundancy Protocol [RFC3768] pgm 113 PGM # PGM Reliable Transport Protocol [Speakman] # 114 any 0-hop protocol [IANA] l2tp 115 L2TP # Layer Two Tunneling Protocol [Aboba] ddx 116 DDX # D-II Data Exchange (DDX) [Worley] iatp 117 IATP # Interactive Agent Transfer Protocol [Murphy] stp 118 STP # Schedule Transfer Protocol [JMP] srp 119 SRP # SpectraLink Radio Protocol [Hamilton] uti 120 UTI # UTI [Lothberg] smp 121 SMP # Simple Message Protocol [Ekblad] sm 122 SM # SM [Crowcroft] ptp 123 PTP # Performance Transparency Protocol [Welzl] isis 124 ISIS # over IPv4 [Przygienda] fire 125 FIRE # [Partridge] crtp 126 CRTP # Combat Radio Transport Protocol [Sautter] crudp 127 CRUDP # Combat Radio User Datagram [Sautter] sscopmce 128 SSCOPMCE # [Waber] iplt 129 IPLT # [Hollbach] sps 130 SPS # Secure Packet Shield [McIntosh] pipe 131 PIPE # Private IP Encapsulation within IP [Petri] sctp 132 SCTP # Stream Control Transmission Protocol [Stewart] fc 133 FC # Fibre Channel [Rajagopal] rsvp-e2e-ignore 134 RSVP-E2E-IGNORE # [RFC3175] mobility 135 Mobility # Header [RFC3775] udplite 136 UDPLite # [RFC3828] mpls-in-ip 137 MPLS-in-IP # [RFC4023] # 138-252 Unassigned [IANA] use 253 Use # for experimentation and testing [RFC3692] use 254 Use # for experimentation and testing [RFC3692] # 255 Reserved [IANA] # # # REFERENCES # ---------- # # [CFTP] Forsdick, H., "CFTP", Network Message, Bolt Beranek and # Newman, January 1982. # # [CISCO] Cisco Systems, "Gateway Server Reference Manual", Manual # Revision B, January 10, 1988. # # [DDN] Feinler, E., Editor, "DDN Protocol Handbook", Network # Information Center, SRI International, December 1985. # # [DGP] M/A-COM Government Systems, "Dissimilar Gateway Protocol # Specification, Draft Version", Contract no. CS901145, # November 16, 1987. # # [ETHERNET] "The Ethernet, A Local Area Network: Data Link Layer and # Physical Layer Specification", AA-K759B-TK, Digital # Equipment Corporation, Maynard, MA. Also as: "The # Ethernet - A Local Area Network", Version 1.0, Digital # Equipment Corporation, Intel Corporation, Xerox # Corporation, September 1980. And: "The Ethernet, A Local # Area Network: Data Link Layer and Physical Layer # Specifications", Digital, Intel and Xerox, November 1982. # And: XEROX, "The Ethernet, A Local Area Network: Data Link # Layer and Physical Layer Specification", X3T51/80-50, # Xerox Corporation, Stamford, CT., October 1980. # # [IEN90] Cohen, D. and J. Postel, "Multiplexing Protocol", IEN 90, # USC/Information Sciences Institute, May 1979. # # [IEN119] Forgie, J., "ST - A Proposed Internet Stream Protocol", # IEN 119, MIT Lincoln Laboratory, September 1979. # # [IEN158] Haverty, J., "XNET Formats for Internet Protocol Version 4", # IEN 158, October 1980. # # [MFENET] Shuttleworth, B., "A Documentary of MFENet, a National # Computer Network", UCRL-52317, Lawrence Livermore Labs, # Livermore, California, June 1977. # # [PUP] Boggs, D., J. Shoch, E. Taft, and R. Metcalfe, "PUP: An # Internetwork Architecture", XEROX Palo Alto Research Center, # CSL-79-10, July 1979; also in IEEE Transactions on # Communication, Volume COM-28, Number 4, April 1980. # # [SPRITE] Welch, B., "The Sprite Remote Procedure Call System", # Technical Report, UCB/Computer Science Dept., 86/302, # University of California at Berkeley, June 1986. # # [RFC741] Cohen, D., "Specifications for the Network Voice Protocol", # RFC 741, ISI/RR 7539, USC/Information Sciences Institute, # March 1976. # # [RFC768] Postel, J., "User Datagram Protocol", STD 6, RFC 768, # USC/Information Sciences Institute, August 1980. # # [RFC791] Postel, J., "Internet Protocol - DARPA Internet Prnogram # Protocol Specification", STD 5, RFC 791, DARPA, September # 1981. # # [RFC792] Postel, J., "Internet Control Message Protocol - DARPA # Internet Program Protocol Specification", STD 5, RFC 792, # USC/Information Sciences Institute, September 1981. # # [RFC793] Postel, J., "Transmission Control Protocol - DARPA # Internet Program Protocol Specification", STD 7, RFC 793, # USC/Information Sciences Institute, September 1981. # # [RFC823] Hinden, R., and A. Sheltzer, "The DARPA Internet Gateway", # RFC 823, BBN, September 1982. # # [RFC869] Hinden, R., "A Host Monitoring Protocol", RFC 869, # Bolt Beranek and Newman, December 1983. # # [RFC888] Seamonson, L., and E. Rosen, "STUB" Exterior Gateway # Protocol", RFC 888, BBN Communications Corporation, # January 1984. # # [RFC905] International Standards Organization, "ISO Transport Protocol # Specification - ISO DP 8073", RFC 905, April 1984. # # [RFC908] Velten, D., R. Hinden, and J. Sax, "Reliable Data Protocol", # RFC 908, BBN Communications Corporation, July 1984. # # [RFC938] Miller, T., "Internet Reliable Transaction Protocol", RFC 938, # ACC, February 1985. # # [RFC969] Clark, D., M. Lambert, and L. Zhang, "NETBLT: A Bulk Data # Transfer Protocol", RFC 969, MIT Laboratory for Computer # Science, December 1985. # # [RFC1112] Deering, S., "Host Extensions for IP Multicasting", # STD 5, RFC 1112, Stanford University, August 1989. # # [RFC1190] Topolcic, C., Editor, "Experimental Internet Stream # Protocol, Version 2 (ST-II)", RFC 1190, CIP Working Group, # October 1990. # # [RFC1241] Woodburn, W., and D. Mills, " A Scheme for an Internet # Encapsulation Protocol: Version 1", RFC 1241, SAIC, # University of Delaware, July 1991. # # [RFC1583] Moy, J., "The OSPF Specification", RFC 1583, Proteon, # March 1994. # # [RFC1735] Heinanen, J., and R. Govindan, " NBMA Address Resolution # Protocol (NARP)", RFC 1735, Telecom Finland and USC/ISI, # December 1994. # # [RFC1819] L. Delgrossi, L. Berger, and ST2 Working Group, "Internet # Stream Protocol Version 2 (ST2) Protocol Specification # - Version ST2+", RFC 1819, August 1995. # # [RFC1883] Deering, S., and R. Hinden, "Internet Protocol, Version 6 # (IPv6) Specification", RFC 1883, Xerox PARC, Ipsilon # Networks, December 1995. # # [RFC2003] Perkins, C., "IP Encapsulation within IP", RFC 2003, IBM, # September 1996. # # [RFC2393] Shacham, A., and R. Monsour, R. Pereira, M. Thomas, "IP # Payload Compression Protocol (IPComp)", RFC 2393, Cisco, # Hi/fn, TimeStep, AltaVista Internt, December 1998. # # [RFC2402] S. Kent and R. Atkinson, "IP Authentication Header", # RFC 2402, November 1998. # # [RFC2406] S. Kent and R. Atkinson, "IP Encapsulating Security Payload (ESP)", # RFC 2406, November 1998. # # [RFC3175] F. Baker, C. Iturralde, F. Le Faucheur, B. Davie, # "Aggregation of RSVP for IPv4 and IPv6 Reservations", # RFC 3175, September 2001. # # [RFC3378] R. Housley and S. Hollenbeck, "EtherIP: Tunneling Ethernet # Frames in IP Datagrams", RFC 3378, September 2002. # # [RFC3692] T. Narten, "Assigning Experimental and Testing Numbers Considered # Useful", RFC 3692, January 2004. # # [RFC3768] R. Hinden, Ed., "Virtual Router Redundancy Protocol (VRRP)", # RFC 3768, April 2004. # # [RFC3775] D. Johnson, C. Perkins, and J. Arkko, "Mobility Support in IPv6", # RFC 3775, June 2004. # # [RFC3828] L-A. Larzon, M. Degermark, S. Pink, L-E. Jonsson Ed., and # G. Fairhurst, Ed., "The UDP-Lite Protocol", RFC 3828, July 2004. # # [RFC4023] T. Worster, Y. Rekhter, and E. Rosen, Ed., "Encapsulating MPLS in # IP or Generic Routing Encapsulation (GRE)", RFC 4023, March 2005. # # [RFC-ietf-dccp-spec-11.txt] # E. Kohler, M. Handley and S. Floyd, "Datagram Congestion # Control Protocol (DCCP)", RFC XXXX, Month Year. # # PEOPLE # ------ # # [Aboba] Bernard Aboba , April 1998. # # [Ballardie] Tony Ballardie # # [BCH2] Barry Howard # # [BK29] Brian Kantor # # [BN7] # # [Braden] Bob Braden, ,, July 1997. # # [BWB6] Barry Boehm # # [BXH] Brian Horn <---none---> # # [BXW] Bruce Willins <---none---> # # [Callon] Ross Callon, , December 1995. # # [Carpenter] Brian Carpenter, , January 1995. # # [Crowcroft] Jon Crowcroft , June 1999. # # [DDC1] David Clark # # [DLM1] David Mills # # [DRC3] Dave Cheriton # # [Deering] Steve Deering, , March 1995. # # [Doraswamy] Naganand Doraswamy, , September 1997. # # [Durst] Robert Durst, , March 1997. # # [DXE1] Deborah Estrin # # [Farinacci] Dino Farinacci, , March 1996. # # [Feldman] Nancy Feldman January 1997. # # [DXF] Dirk Fromhein # # [DXM2] David Mittnacht <---none---> # # [David Johnson] # # [Ekblad] Leif Ekblad , March 1999. # # [GAL5] Guillermo A. Loyola # # [GLENN] K. Robert Glenn # # [GXC] Greg Chesson # # [GXS] Guenther Schreiner # # [GXT1] Gene Tsudik # # [Hamilton] Mark Hamilton , November 1998. # # [HCF2] Harry Forsdick # # [Hinden] Bob Hinden, , November 1995, 1997. # # [Hunter] Michael Hunter, , July 1997. # # [HWB] Hans-Werner Braun # # [HXH] Howard Hart # # [IANA] Internet Assigned Numbers Authority, , June 1995. # # [JBP] Jon Postel # # [JMP] Jean-Michel Pittet, , November 1998. # # [JC120] # # [JFH2] Jack Haverty # # [JI6] John Ioannidis # # [JTM4] John Moy # # [JWF] Jim Forgie # # [JXS] Jim Stevens # # [KATZ] Dave Katz # # [Lee] CJ Lee, , October 1997. # # [Lothberg] Peter Lothberg , March 1999. # # [Markson] Tom Markson, , September 1995. # # [MB] Mike Brescia # # [MBG] Michael Greenwald # # [McIntosh] Bill McIntosh # # [ML109] Mike Little # # [MTR] Marshall T. Rose # # [Murphy] John Murphy , October 1998. # # [MXS1] Martha Steenstrup # # [NC3] J. Noel Chiappa # # [Oberg] Christer Oberg October 1994. # # [Partridge] Criag Partridge , August 1999. # # [Perkins] Charlie Perkins , October 1994. # # [Petri] Bernhard Petri , March 2000. # # [Presotto] Dave Presotto , July 1995. # # [Przygienda] Tony Przygienda , August 1999. # # [PXL1] Paul Liu <---none---> # # [Rajagopal] Murali Rajagopal, , May 2000. # # [RH6] Robert Hinden # # [RTB3] Bob Braden # # [RC77] # # [RDH1] Russ Housley # # [RWS4] Robert W. Scheifler # # [RXB3] Robert Woodburn # # [Sautter] Robert Sautter , August 1999. # # [SAF3] Stuart A. Friedberg # # [SC3] Steve Casner # # [SHB] Steven Blumenthal # # [Speakman] Tony Speakman , January 1998. # # [Sridhar] Manickam R.Sridhar , September 1997. # # [Stewart] Randall R. Stewart , April 2000. # # [Sue Hares] Sue Hares # # [SXA] Susie Armstrong # # [SXD] Steve Deering # # [Tony Li] Tony Li # # [TXM] Trudy Miller # # [Volpe] Victor Volpe , October 1997. # # [VXD] Victor Dafoulas <---none---> # # [Waber] Kurt Waber , August 1999. # # [Welzl] Michael Welzl , August 1999. # # [WM3] William Melohn # # [WXC] Wesley Craig # # [Worley] John Worley , June 1998. # # [ZSU] Zaw-Sing Su # # [] # # # # # #