[150108] in North American Network Operators' Group
Re: Common operational misconceptions
daemon@ATHENA.MIT.EDU (Lamar Owen)
Fri Feb 17 14:51:59 2012
Date: Fri, 17 Feb 2012 14:45:26 -0500
From: Lamar Owen <lowen@pari.edu>
To: nanog@nanog.org
In-Reply-To: <5AD4C80D-425E-4CD0-B661-CF4F359A3D00@tzi.org>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
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.
