Common operational misconceptions

Lamar Owen lowen at pari.edu
Fri Feb 17 13:45:26 CST 2012


On Friday, February 17, 2012 01:30:30 AM Carsten Bormann wrote:
> Ah, one of the greatest misconceptions still around in 2012:

> -- OSI Layer numbers mean something.
> or
> -- Somewhere in the sky, there is an exact definition of what is layer 2, layer 3, layer 4, layer 5 (!), layer 7

Misconception: Layers are not recursive. 

Thanks to tunneling/MPLS/other encapsulation techniques, they are.



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