[149852] in North American Network Operators' Group
Re: Common operational misconceptions
daemon@ATHENA.MIT.EDU (Jack Bates)
Thu Feb 16 12:09:51 2012
Date: Thu, 16 Feb 2012 11:08:22 -0600
From: Jack Bates <jbates@brightok.net>
To: Ray Soucy <rps@maine.edu>
In-Reply-To: <CALFTrnNzgs1V1i35sZPbU_jEg61Kmh=N7=aQCQxk4Rkhoy--GQ@mail.gmail.com>
Cc: "nanog@nanog.org" <nanog@nanog.org>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
On 2/16/2012 7:17 AM, Ray Soucy wrote:
> There seems to be (even among faculty) a gross misunderstanding of
> Layer-2. Nearly every textbook starts with IP, and talks about it as
> if we were 20 years in the past.
Understanding all layers and how they can interact stacked within layers
is a big issue. Granted, they aren't coming out of school, but I've seen
old Sonet/TDM guys trying to figure out transport of Ethernet and it has
been a nightmare on dealing with terminology.
It at first started with trying to explain that vlan based switching is
not Layer-3. :(
Use your imagination when they finally got into MPLS, which kindly takes
the OSI model like a flat piece of paper and wads it up.
Jack
