[28200] in North American Network Operators' Group

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Re: Peering Table Question

daemon@ATHENA.MIT.EDU (Randy Bush)
Wed Apr 19 20:31:20 2000

From: Randy Bush <randy@psg.com>
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To: Larry Snyder <larrys@lexis-nexis.com>
Cc: nanog@nanog.org
Message-Id: <E12i4ps-0002mP-00@rip.psg.com>
Date: Wed, 19 Apr 2000 17:28:48 -0700
Errors-To: owner-nanog-outgoing@merit.edu


> A large file of baseline traceroutes could replace the benefits of
> disclosure, I suppose.

if it could, many of us would beg someone to do it RIGOROUSLY and publish.

a few problems:
  o routing is not always symmetric, or i guess rarely is
  o you would have to do it from'*many* distributed locations to many
    distributed locations to see all the peering points through the potato 
    fog
  o heck, due to bgp best path propagation, unless you are on a router with
    which P is a peer, you can not really tell if C is a customer or peer 
    of P.
  o and it still would not tell you who is paying whom when it is peering

randy


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