Decimal
Keyword
Protocol
References
--------
-------------
----------------------------
----------------
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,RFC1819]
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
DCCP
Datagram
Congestion Control Protocol
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
[RFC2406]
51
AH
Authentication
Header
[RFC2402]
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 [RFC3378]
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
IPComp
IP
Payload Compression Protocol
[RFC2393]
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 [RFC3768]
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
IATP
Interactive
Agent Transfer Protocol [Murphy]
118
STP
Schedule
Transfer Protocol
[JMP]
119
SRP
SpectraLink
Radio Protocol
[Hamilton]
120
UTI
UTI
[Lothberg]
121
SMP
Simple
Message Protocol
[Ekblad]
122
SM
SM
[Crowcroft]
123
PTP
Performance
Transparency Protocol
[Welzl]
124
ISIS over IPv4
[Przygienda]
125
FIRE
[Partridge]
126
CRTP
Combat
Radio Transport Protocol
[Sautter]
127
CRUDP
Combat
Radio User Datagram
[Sautter]
128
SSCOPMCE
[Waber]
129
IPLT
[Hollbach]
130
SPS
Secure
Packet Shield
[McIntosh]
131
PIPE
Private
IP Encapsulation within IP
[Petri]
132
SCTP
Stream
Control Transmission Protocol
[Stewart]
133
FC
Fibre
Channel
[Rajagopal]
134
RSVP-E2E-IGNORE
[RFC3175]
135
Mobility Header
[RFC3775]
136
UDPLite
[RFC3828]
137
MPLS-in-IP
[RFC4023]
138-252 Unassigned
[IANA]
253
Use for experimentation and testing
[RFC3692]
254
Use for experimentation and testing
[RFC3692]
255
Reserved
[IANA]
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