The protocol being used by a data packet is shown as pcol= followed by a protocol number.
For the following common protocols, SysMonitor also adds the protocol name taken from http://www.iana.org/assignments/protocol-numbers. For example pcol=1 is displayed as pcol=1 (ICMP).
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 |
