| 0 |
HOPOPT IPv6 Hop-by-Hop Option [RFC1883] |
| 1 |
ICMP Internet Control Message [RFC792] |
| 2 |
IGMP Internet Group Management [RFC1112] |
| 3 |
GGP Gateway-to-Gateway [RFC823] |
| 4 |
IP IP in IP (encapsulation) [RFC2003] |
| 5 |
ST Stream [RFC1190,IEN119] |
| 6 |
TCP Transmission Control [RFC793] |
| 7 |
CBT CBT [Ballardie] |
| 8 |
EGP Exterior Gateway Protocol [RFC888,DLM1] |
| 9 |
IGP any private interior gateway [IANA] (used by Cisco for their IGRP) |
| 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] |
| 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 Protocol Class 4 [RFC905,RC77] |
| 30 |
NETBLT Bulk Data Transfer Protocol [RFC969,DDC1] |
| 31 |
MFE-NSP MFE Network Services Protocol [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 |
ESP Encap Security Payload for IPv6 [RFC1827] |
| 51 |
AH Authentication Header for IPv6 [RFC1826] |
| 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 |
SKIP SKIP [Markson] |
| 58 |
IPv6-ICMP ICMP for IPv6 [RFC1883] |
| 59 |
IPv6-NoNxt No Next Header for IPv6 [RFC1883] |
| 60 |
IPv6-Opts Destination Options for IPv6 [RFC1883] |
| 61 |
any host internal protocol [IANA] |
| 62 |
CFTP CFTP [CFTP,HCF2] |
| 63 |
any local network [IANA] |
| 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 [IANA] |
| 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 |
EIGRP EIGRP [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 [RXH1] |
| 98 |
ENCAP Encapsulation Header [RFC1241,RXB3] |
| 99 |
any private encryption scheme [IANA] |
| 100 |
GMTP GMTP [RXB5] |
| 101 |
IFMP Ipsilon Flow Management Protocol [Hinden] |
| 102 |
PNNI PNNI over IP [Callon] |
| 103 |
PIM Protocol Independent Multicast [Farinacci] |
| 104 |
ARIS ARIS [Feldman] |
| 105 |
SCPS SCPS [Durst] |
| 106 |
QNX QNX [Hunter] |
| 107 |
A/N Active Networks [Braden] |
| 108 |
IPPCP IP Payload Compression Protocol [Doraswamy] |
| 109 |
SNP Sitara Networks Protocol [Sridhar] |
| 110 |
Compaq-Peer Compaq Peer Protocol [Volpe] |
| 111 |
IPX-in-IP IPX in IP [Lee] |
| 112 |
VRRP Virtual Router Redundancy Protocol [Hinden] |
| 113 |
PGM PGM Reliable Transport Protocol [Speakman] |
| 114 |
any 0-hop protocol [IANA] |
| 115 |
L2TP Layer Two Tunneling Protocol [Aboba] |
| 116 |
DDX D-II Data Exchange (DDX) [Worley] |
| 117-254 |
Unassigned [IANA] |
| 255 |
Reserved [IANA] |
