Subject: Re: IGMP

From: Wilbert de Graaf <[email-masked]>
Date: Fri, 02 Mar 2001 08:58:45 +0100

>hello,
>just a simple question
>IGMP messages are encapsulated in IPv4 with an IP protocol number of 2.
>what is the number 2 ;
>is it that mean the sending and recieving mode or what?

The protocol number 2 is assigned to IGMP (rfc1112), and the IP module of
the TCP/IP stack uses this number to hand the message to the IGMP module.
(That is, to discriminate igmp packets from icmp, tcp, udp, and so on.)

Wilbert