Re: [Etherape-users] found a crash

[Matthew F. <mf...@ci...>]

> > Other point : you put the ICMP protocol in the layer 4. I am not agree with 
> > that. ICMP use and is a part of IP. It's layer 3. Each IP implementation must 
> > have ICMP.
> ICMP is part of the TCP/IP suite of protocols, yes, but ICMP doesn't travel
> atop any IP packet, but rather directly over the Ethernet frame.
> 

Oh really, then how come ICMP is IP protocol 1 and how would you able to
ping a host by specifying an IP address if it were directly above layer 2
(Ethernet) ??

It not a transport protocol (UDP/TCP) but it is encapsulated (and
therefore above) layer 3. I believe technically it is layer 3 even though
utilizes a layer 3 datagram delivery service like layer 4 protocols
(TCP/UDP)

-mdf