Appendix G. IP Header Protocols

IP Header Protocols

      DecimalProtocolDescription0Reserved1ICMPInternet Control Message
2IGMPInternet Group Management3GGPGateway-to-Gateway4IPIP
in IP (encapsulation)5STStream6TCPTransmission Control
7UCLUCL8EGPExterior Gateway Protocol9IGPany private interior gateway
10BBN-RCC-MON BBN RCC Monitoring11NVP-IINetwork Voice Protocol
12PUPPUP13ARGUSARGUS14EMCONEMCON15XNETCross Net Debugger
16CHAOSChaos17UDPUser Datagram
18MUXMultiplexing 19DCN-MEASDCN Measurement Subsystems
20HMPHost Monitoring21PRMPacket Radio Measurement
22XNS-IDPXEROX NS IDP23TRUNK-1Trunk-124TRUNK-2Trunk-225LEAF-1Leaf-126LEAF-2Leaf-227
RDPReliable Data Protocol28IRTPInternet Reliable Transaction29ISO-TP4ISO
Transport Protocol Class 430NETBLTBulk Data Transfer Protocol31MFE-NSPMFE Network Services Protocol
32MERIT-INPMERIT Internodal Protocol33SEPSequential Exchange Protocol343PC
Third Party Connect Protocol35IDPRInter-
Domain Policy Routing Protocol36XTPXTP37DDPDatagram Delivery Protocol
38IDPR-CMTPIDPR Control Message Transport Proto39TP++TP++ Transport Protocol40ILIL
Transport Protocol41SIPSimple Internet Protocol42SDRPSource Demand Routing Protocol43SIP-SRSIP
Source Route44SIP-FRAGSIP Fragment45IDRPInter-Domain Routing Protocol46
RSVPReservation Protocol47GREGeneral Routing Encapsulation48MHRPMobile Host Routing Protocol
49BNABNA50SIPP-ESPSIPP Encap Security Payload51SIPP-AHSIPP Authentication Header52I-NLSP
Integrated Net Layer Security53SWIPEIP with Encryption54NHRPNBMA Next Hop Resolution Protocol55-60
Unassigned61any host internal protocol62CFTPCFTP63any local network64SAT-EXPAKSATNET and Backroom
EXPAK65KRYPTOLANKryptolan66RVDMIT Remote Virtual Disk Protocol67IPPCInternet Pluribus Packet Core68
any distributed file system69SAT-MONSATNET Monitoring70VISAVISA Protocol71IPCVInternet Packet Core Utility
72CPNXComputer Protocol Network Executive73CPHB Computer Protocol Heart Beat74WSNWang Span Network
75PVPPacket Video Protocol76BR-SAT-MONBackroom SATNET Monitoring77SUN-NDSUN ND PROTOCOL-
Temporary78WB-MONWIDEBAND Monitoring79WB-EXPAKWIDEBAND EXPAK80ISO-IPISO Internet Protocol81
VMTPVMTP82SECURE-VMTPSECURE-VMTP83VINESVINES84TTPTTP85NSFNET-IGPNSFNET-IGP86DGP
Dissimilar Gateway Protocol87TCFTCF88IGRPIGRP89OSPFIGPOSPFIGP90Sprite-RPCSprite RPC Protocol91
LARPLocus Address Resolution Protocol92MTPMulticast Transport Protocol93AX.25AX.25 Frames
94IPIPIP-within-IP Encapsulation Protocol95MICPMobile Internetworking Control Pro.96SCC-
SPSemaphore Communications Sec. Pro.97ETHERIPEthernet-within-IP Encapsulation98ENCAPEncapsulation Header
99any private encryption scheme100GMTPGMTP101-254Unassigned255Reserved