The protocol being used by a data packet is shown as pcol= followed by a protocol number.
|
Number
|
Protocol
|
Monitor shows
|
|
1
|
Internet Control Message
|
ICMP
|
|
2
|
Internet Group Management
|
IGMP
|
|
6
|
Transmission Control
|
TCP
|
|
8
|
Exterior Gateway Protocol
|
EGP
|
|
9
|
Interior Gateway Protocol
|
IGP
|
|
17
|
User Datagram
|
UDP
|
|
41
|
Ipv6
|
IPV6
|
|
46
|
Reservation Protocol
|
PRSVP
|
|
47
|
General Routing Encapsulation
|
GRE
|
|
58
|
ICMP for IPv6
|
IPV6–ICMP
|
|
111
|
IPX in IP
|
IPX-In-IP
|
|
115
|
Layer Two Tunneling Protocol
|
L2TP
|
|
121
|
Simple Message Protocol
|
SMP
|
