Q: Here is a Cisco paper that backs up the premise of the diferences in the models (Its just a paper that outlines the DOD Model
and functions:
www.cisco.com/univercd/cc/td/doc/product/iaabu/centri4/user/scf4ap1.htm#xtocid6
"Finally RFC 826 mentions ARP as being lower than the higher, layer 3 and up, protocols [CHAOS,
Internet, PUP, DECnet]:"
Again you have to remember they were using a different model. Also, as I stated earlier RFC 826 was a discussion of the
definition of ARP and its potential implementation.
8. "RFC continues to talk only in terms of a collision domain, layer 2, in this:"
Again they are discussing the broadcasting not collisions.
A:
RFC 1180 was presented for its outline of direct and indirect routing and a basic outline of my position on ARP as a Layer 3 protocol. By the way clear outline of the concepts of direct and indirect routing can also be found in Illustrated TCP/IP. Anyway, what I was presenting was that before IP can send the packet to the Data Link Layer the IP layer must have already determined whether the packet would be directly routed to the intended receiver (local to the network)or indirectly (sent through a router or gateway)and in essence this was a form of path determination, a direct function of Layer 3.
OK so let's say you don't buy the RFC arguments that I have given how about a couple of quotes
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