[e2e] Layering vs. modularization
L.Wood at surrey.ac.uk
Fri May 16 01:13:21 PDT 2008
David P. Reed wrote on Fri 2008-05-16 2:24:
> if you change/extend the behavior of a layer, you must reimplement
> and re-prove all layers above that layer. Thus, the deeper the stack,
> the less benefit of modularity.
No, just the layer above it - develop a new link layer, describe how
to run IP over it, you're done as far as IP-based apps are concerned.
This is an example of the classic computer science 'you can do
anything with a single level of indirection'.
if layering is a hallucination, so is "computer science".
<http://www.ee.surrey.ac.uk/Personal/L.Wood/><L.Wood at surrey.ac.uk>
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