Q:
Here is another
www.inetdaemon.com/tutorials/theory/osi/operation.html
Hmmmmm...evidence seems to be building.
" think, though, based on RFC 826, it is really talking about how to help Ethernet and RFC 1180 talks about, more simply, the function of ARP based on a global perspective when talking about routing (indirect or direct).
Actually, direct routing by definition is within a broadcast domain, and indirect routing is by definition is communication with an end-node in a diferent broadcast domain requiring the use of a router or gateway for communication. Direct routing conceptually speaking is not a routing function persay but a concept used to describe the function of moving a packet within a broadcast segment, such communication not requiring any alternate device by which to facilitate the communication. Indirect routing requires alternate devices to facilitate the communication, a router or gateway. And that is the way RFC 1180 discusses the two concepts. It is the interaction between the two concepts and the concept of path determination that was my point. ARP is a helper algorithm to the function of IP and plays a role in the path determination function of IP, at layer 3.
"ARP does not cross collision domains by default. It is used to help frames find its destination between hosts within a collision domain."
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