Protocol Names and Numbers Database

From Web (09.10.1996)

Table of Contents


This file is from Internet Assigned Numbers Authority (IANA) . IANA maintains the Assigned Numbers RFC, the most recent of which is RFC1700, issued in October, 1994. They maintain the protocol names and numbers as needed; this file was last updated 7/11/95.

The entries in this file are in the same format as found in a standard Berkeley UNIX /etc/protocols file. There are also links between the protocol names, and their respective RFCs (their standard documentation). This file references all the protocols that can be contained in the protocol field in a standard IP header. There is at least one other protocol of note (ARP), and RFC 1122, "Host Requirements," has addendums the RFCs for the others referenced in this file.

2. Protocol numbers

In the Internet Protocol (IP) [DDN], [RFC791] there is a field, called Protocol, to identify the next level protocol. This is an 8 bit field.

    Assigned Internet Protocol Numbers

    Decimal    Keyword     Protocol                     References
    -------    -------     --------                     ----------
         0                 Reserved                          [JBP]


     1     ICMP        Internet Control Message       [RFC792,JBP]

IGMP [RFC1112]

     2     IGMP        Internet Group Management     [RFC1112,JBP]
     3     GGP         Gateway-to-Gateway              [RFC823,MB]
     4     IP          IP in IP (encapsulation)              [JBP]
     5     ST          Stream                 [RFC1190,IEN119,JWF]

TCP [RFC793]

     6     TCP         Transmission Control           [RFC793,JBP]
     7     UCL         UCL                                   [PK]
     8     EGP         Exterior Gateway Protocol     [RFC888,DLM1]
     9     IGP         any private interior gateway          [JBP]
    10     BBN-RCC-MON BBN RCC Monitoring                    [SGC]
    11     NVP-II      Network Voice Protocol         [RFC741,SC3]
    12     PUP         PUP                             [PUP,XEROX]
    13     ARGUS       ARGUS                                [RWS4]
    14     EMCON       EMCON                                 [BN7]
    15     XNET        Cross Net Debugger            [IEN158,JFH2]
    16     CHAOS       Chaos                                 [NC3]

UDP [RFC768]

    17     UDP         User Datagram                  [RFC768,JBP]
    18     MUX         Multiplexing                    [IEN90,JBP]
    19     DCN-MEAS    DCN Measurement Subsystems           [DLM1]
    20     HMP         Host Monitoring                [RFC869,RH6]
    21     PRM         Packet Radio Measurement              [ZSU]
    22     XNS-IDP     XEROX NS IDP               [ETHERNET,XEROX]
    23     TRUNK-1     Trunk-1                              [BWB6]
    24     TRUNK-2     Trunk-2                              [BWB6]
    25     LEAF-1      Leaf-1                               [BWB6]
    26     LEAF-2      Leaf-2                               [BWB6]
    27     RDP         Reliable Data Protocol         [RFC908,RH6]
    28     IRTP        Internet Reliable Transaction  [RFC938,TXM]
    29     ISO-TP4     ISO Transport Prot. Class 4   [RFC905,RC77]
    30     NETBLT      Bulk Data Transfer Prot.      [RFC969,DDC1]
    31     MFE-NSP     MFE Network Services Prot.    [MFENET,BCH2]
    32     MERIT-INP   MERIT Internodal Protocol             [HWB]
    33     SEP         Sequential Exchange Protocol        [JC120]
    34     3PC         Third Party Connect Protocol         [SAF3]
    35     IDPR        Inter-Domain Policy Routing Protocol [MXS1]

    36     XTP         XTP                                   [GXC]
    37     DDP         Datagram Delivery Protocol            [WXC]
    38     IDPR-CMTP   IDPR Control Message Transport Proto [MXS1]
    39     TP++        TP++ Transport Protocol               [DXF]
    40     IL          IL Transport Protocol            [Presotto]
    41     IPv6        Ipv6                              [Deering]

    42     SDRP        Source Demand Routing Protocol       [DXE1]
    43     IPv6-Route  Routing Header for IPv6           [Deering]
    44     IPv6-Frag   Fragment Header for IPv6          [Deering]
    45     IDRP        Inter-Domain Routing Protocol   [Sue Hares]
    46     RSVP        Reservation Protocol           [Bob Braden]
    47     GRE         General Routing Encapsulation     [Tony Li]
    48     MHRP        Mobile Host Routing Protocol[David Johnson]
    49     BNA         BNA                          [Gary Salamon]
    50     IPv6-Crypt  Encryption Header for IPv6        [Deering]
    51     IPv6-Auth   Authentication Header for IPv6    [Deering]
    52     I-NLSP      Integrated Net Layer Security  TUBA [GLENN]
    53     SWIPE       IP with Encryption                    [JI6]
    54     NARP        NBMA Address Resolution Protocol  [RFC1735]
    55     MOBILE      IP Mobility                       [Perkins]
    56     TLSP        Transport Layer Security Protocol   [Oberg]
                       using Kryptonet key management
    57     Unassigned                                       [IANA]
    58     IPv6-ICMP   ICMP for IPv6                     [Deering]
    59     IPv6-NoNxt  No Next Header for IPv6           [Deering]
    60     IPv6-Opts   Destination Options for IPv6      [Deering]
    61                 any host internal protocol            [JBP]
    62     CFTP        CFTP                            [CFTP,HCF2]
    63                 any local network                     [JBP]
    64     SAT-EXPAK   SATNET and Backroom EXPAK             [SHB]
    65     KRYPTOLAN   Kryptolan                            [PXL1]
    66     RVD         MIT Remote Virtual Disk Protocol      [MBG]
    67     IPPC        Internet Pluribus Packet Core         [SHB]
    68                 any distributed file system           [JBP]
    69     SAT-MON     SATNET Monitoring                     [SHB]
    70     VISA        VISA Protocol                        [GXT1]
    71     IPCV        Internet Packet Core Utility          [SHB]
    72     CPNX        Computer Protocol Network Executive  [DXM2]
    73     CPHB        Computer Protocol Heart Beat         [DXM2]
    74     WSN         Wang Span Network                     [VXD]
    75     PVP         Packet Video Protocol                 [SC3]
    76     BR-SAT-MON  Backroom SATNET Monitoring            [SHB]
    77     SUN-ND      SUN ND PROTOCOL-Temporary             [WM3]
    78     WB-MON      WIDEBAND Monitoring                   [SHB]
    79     WB-EXPAK    WIDEBAND EXPAK                        [SHB]
    80     ISO-IP      ISO Internet Protocol                 [MTR]
    81     VMTP        VMTP                                 [DRC3]
    82     SECURE-VMTP SECURE-VMTP                          [DRC3]
    83     VINES       VINES                                 [BXH]
    84     TTP         TTP                                   [JXS]
    85     NSFNET-IGP  NSFNET-IGP                            [HWB]
    86     DGP         Dissimilar Gateway Protocol     [DGP,ML109]
    87     TCF         TCF                                  [GAL5]
    88     IGRP        IGRP                            [CISCO,GXS]
    89     OSPFIGP     OSPFIGP                      [RFC1583,JTM4]
    90     Sprite-RPC  Sprite RPC Protocol            [SPRITE,BXW]

    91     LARP        Locus Address Resolution Protocol     [BXH]
    92     MTP         Multicast Transport Protocol          [SXA]
    93     AX.25       AX.25 Frames                         [BK29]

    94     IPIP        IP-within-IP Encapsulation Protocol   [JI6]
    95     MICP        Mobile Internetworking Control Pro.   [JI6]
    96     SCC-SP      Semaphore Communications Sec. Pro.    [HXH]

    97     ETHERIP     Ethernet-within-IP Encapsulation     [RXH2]
    98     ENCAP       Encapsulation Header         [RFC1241,RXB3]
    99                 any private encryption scheme         [JBP]
   100     GMTP        GMTP                                 [RXB5]
101-254                Unassigned                            [JBP]
    255                Reserved                              [JBP]

3. 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, November1982.
            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 ProtocolVersion 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
      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 Program
         Protocol Specification, STD 5, RFC 791, DARPA, September
[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.

4. People

[BCH2] Barry Howard  <Howard@NMFECC.LLNL.GOV>
[BK29] Brian Kantor  <brian@UCSD.EDU>
[BN7] <mystery contact >
[BWB6] Barry Boehm  <boehm@ARPA.MIL>
[BXH] Brian Horn  <---none--->
[BXW] Bruce Willins <---none--->
[Carpenter] Brian Carpenter, <>, January 1995.
[DDC1] David Clark  <ddc@LCS.MIT.EDU>
[DLM1] David Mills  <Mills@HUEY.UDEL.EDU>
[DRC3] Dave Cheriton  <cheriton@PESCADERO.STANFORD.EDU>
[Deering] Steve Deering, <>, March 1995.
[DXE1] Deborah Estrin  <>
[DXF] Dirk Fromhein  <>
[DXM2] David Mittnacht  <---none--->
[David Johnson] <mystery contact>
[GAL5] Guillermo A. Loyola  <LOYOLA@IBM.COM>
[GLENN]  K. Robert Glenn  <>
[GXC] Greg Chesson  <Greg@SGI.COM>
[GXS] Guenther Schreiner  <>
[GXT1] Gene Tsudik  <tsudik@USC.EDU>
[HCF2] Harry Forsdick  <Forsdick@BBN.COM>
[HWB] Hans-Werner Braun  <HWB@MCR.UMICH.EDU>
[HXH] Howard Hart  <>
[IANA] Internet Assigned Numbers Authority, <>,June 1995.
[JBP]   Jon Postel <>
[Presotto] Dave Presotto  <>, July 1995.
[JC120] <mystery contact>
[JFH2] Jack Haverty <jhaverty@ORACLE.COM>
[JI6] John Ioannidis  <ji@CS.COLUMBIA.EDU>
[JTM4] John Moy  <jmoy@PROTEON.COM>
[JXS] Jim Stevens  <Stevens@ISI.EDU>
[KATZ]  Dave Katz <>
[MB] Mike Brescia  <Brescia@CCV.BBN.COM>
[MBG] Michael Greenwald  <Greenwald@SCRC-STONY-BROOK.SYMBOLICS.COM>
[ML109] Mike Little  <little@MACOM4.ARPA>
[MTR] Marshall T. Rose  <>
[MXS1] Martha Steenstrup  <MSteenst@BBN.COM>
[NC3] J. Noel Chiappa  <JNC@XX.LCS.MIT.EDU>
[Oberg] Christer Oberg <>, October 1994.
[Perkins] Charlie Perkins <>, October 994.
[PK] Peter Kirstein <Kirstein@NSS.CS.UCL.AC.UK>
[PXL1] Paul Liu  <---none--->
[RH6] Robert Hinden  <Hinden@ENG.SUN.COM>
[RTB3]  Bob Braden <>
[RC77] <mystery contact>
[RWS4] Robert W. Scheifler  <RWS@XX.LCS.MIT.EDU>
[RXB3] Robert Woodburn <>
[RXH2] Russ Housley  <>
[SAF3] Stuart A. Friedberg  <stuart@CS.WISC.EDU>
[SC3] Steve Casner  <>
[SGC] Steve Chipman  <Chipman@F.BBN.COM>
[SHB] Steven Blumenthal  <BLUMENTHAL@VAX.BBN.COM>
[Sue Hares]  Sue Hares <>
[SXA] Susie Armstrong  <Armstrong.wbst128@XEROX.COM>
[SXD] Steve Deering  <deering@PARC.XEROX.COM>
[Tony Li] Tony Li  <>
[TXM] Trudy Miller  <Trudy@ACC.COM>
[VXD] Victor Dafoulas  <---none--->
[WM3] William Melohn  <Melohn@SUN.COM>
[WXC] Wesley Craig   <>
[ZSU] Zaw-Sing Su  <ZSu@TSCA.ISTC.SRI>