[30723] in North American Network Operators' Group
Re: Formal study: How many points networks share
daemon@ATHENA.MIT.EDU (batz)
Mon Aug 28 16:43:38 2000
Date: Mon, 28 Aug 2000 11:57:35 -0400 (EDT)
From: batz <batsy@vapour.net>
To: Sean Donelan <sean@donelan.com>
Cc: nanog@merit.edu
In-Reply-To: <20000827041051.2564.cpmta@c004.sfo.cp.net>
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On 26 Aug 2000, Sean Donelan wrote:
:Have any providers done a formal study of how many points they share
:in common with other networks? I know most providers consider their
:competition, if nothing else for how peering will be done. There
:seems to be a tremendous amount of overlap between networks. Almost
:every major network map looks identical. And there are some third-party
:consultants selling network maps. But I was wondering if anyone had
:a formal study from "the horses mouth."
I missed the discussion from a few weeks ago, but is this for physical
network maps?
If not, couldn't this be done using routing tables, RAdb
information, and some geometry a la CAIDA?
Aren't most accurate physical network maps borderline classified for the
most part?
Many network maps include a PVC they use from a Tier-1 provider as part
of a 'physical' infrastructure, which would cause their network map to
be conspicuously similar to that of their transit provider.
CAIDA's AS connectivity maps are the closest thing to a study that I have
seen.
-j
