Re: ARP and TCP/IP layering [7:8335]

[Marty Adkins]

"Howard C. Berkowitz" wrote:
> 
> OSI, in its _basic_ 7 layer form, is a useful tool for
> conceptualizing and educating. That's it.  Certain concepts, like the
> generic relationship between layers, protocol encapsulation, etc.,
> are generally useful. But I assure you, from personal experience in
> ISO, IETF, CCITT/ITU-T, and ANSI, nobody spends more than a few
> seconds thinking about what layer something goes into.

I wholeheartedly agree, Howard!  What is very important to understand
is ENCAPSULATION and the concept of protocol headers.  It's crucial
to know what layer is encapsulated inside of another.  This is fundamental
to both design and troubleshooting.

- Marty




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