Reference Guide
3
IP header number list
The IP Protocol header contains an 8-bit field that identifies the protocol for the transport layer for the
datagram.
Keyword
Number
Protocol
0
Reserved
ICMP
1
Internet Control Message
IGMP
2
Internet Group Management
GGP
3
Gateway-to-Gateway
IP
4
IP-within-IP (encapsulation)
ST
5
Stream
TCP
6
Transmission Control Protocol
UCL
7
UCL
EGP
8
Exterior Gateway Protocol
IGP
9
Any private interior gateway
BBN-RCC-MON
10
BBN RCC Monitoring
NVP-II
11
Network Voice Protocol
PUP
12
PUP
ARGUS
13
ARGUS
EMCON
14
EMCON
XNET
15
Cross Net Debugger
CHAOS
16
Chaos
UDP
17
User Datagram Protocol
MUX
18
Multiplexing
DCN-MEAS
19
DCN Measurement Subsystems
HMP
20
Host Monitoring
PRM
21
Packet Radio Measurement
XNS-IDP
22
XEROX NS IDP
TRUNK-1
23
Trunk-1
TRUNK-2
24
Trunk-2
LEAF-1
25
Leaf-1
LEAF-2
26
Leaf-2
RDP
27
Reliable Data Protocol
IRTP
28
Internet Reliable Transaction
ISO-TP4
29
ISO Transport Protocol Class 4
NETBLT
30
Bulk Data Transfer Protocol
MFE-NSP
31
MFE Network Services Protocol
MERIT-INP
32
MERIT Internodal Protocol
SEP
33
Sequential Exchange Protocol
3PC
34
Third Party Connect Protocol
IDPR
35
Inter-Domain Policy Routing Protocol