Address Resolution Protocol - It's definitely a network layer protocol that
interfaces with the data-link layer protocol.
We know it's not just a Layer 2 protocol, because there's a higher level
(Layer 3) address associated with it.
As far as "the truth" is concerned, I wouldn't venture to provide *it* as
much as my opinion of it, which is that it's part of the 'handoff' between
Layer 2 and Layer 3, which makes Comer's statement partially correct. I'd
phrase it more as "It is the datalink-to-network layer interface" (because
there's a network-to-transport layer interface, too)
-e-
----- Original Message -----
From: "Dr Rita Puzmanova"
To:
Sent: Wednesday, June 13, 2001 6:58 AM
Subject: ARP and TCP/IP layering [7:8335]
> Hi all,
>
> Trivial yet fundamental question. I have seen ARP described as part of
> the network (internet) layer so many times that I have started to
> believe it belongs there (although I know well that it operates "as if"
> the Layer 2 protocol - as per OSI RM). Now I have eventually come across
> Doug Comer's statement: "It's part of the network interface layer."
>
> I should not ask where the truth is but still I will. That would mean
> quite a lot of books are incorrect in this (including Cisco materials).
>
> Rita
Message Posted at:
http://www.groupstudy.com/form/read.php?f=7&i=8432&t=8335
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