Reed's views, was [e2e] Cannara's views
braden at ISI.EDU
Mon Apr 16 09:38:38 PDT 2001
*> so the interesting thing that is happening is that while we play games
*> with level 2, 3 and 4 , to work around our shortcomings, the internet
*> is showing how general the idea of "routing around damage" is, and is
*> devising level 7 mechanisms - the whole overlay approach is quite fun,
*> (unlike the underlay approaches) in that it can be used to side step
*> any amount of firewall and lower level addresstranslation munging....
Quite fun. Those concerned with efficiency may note that moving a
fix for lower layer problems into the upper layers is typically less
efficient, but it gets the job done.
A major shift in 30 years is in transmission cost ... the cost per
bit has gone down dramatically since we paid thousands of dollars a
month for a 56kbps line. This means we can now well afford the luxury
of fixing lower layer problems at the application layer.
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