[75583] in North American Network Operators' Group
Re: anycast roots
daemon@ATHENA.MIT.EDU (Joe Abley)
Wed Nov 17 10:06:22 2004
In-Reply-To: <20041117133724.GM34085@new.detebe.org>
Cc: Stephane Bortzmeyer <bortzmeyer@nic.fr>, nanog@merit.edu
From: Joe Abley <jabley@isc.org>
Date: Wed, 17 Nov 2004 10:05:20 -0500
To: "Elmar K. Bins" <elmi@4ever.de>
Errors-To: owner-nanog-outgoing@merit.edu
On 17 Nov 2004, at 08:37, Elmar K. Bins wrote:
> in alternating fashion, but I would assume "jns1" through "jns6" are
> just the individual servers of a setup called "hgtld".
I have no idea about Verisign's scheme, but in case anybody notices
similar distribution of queries across F root servers, it may help to
know that:
xxxNa.f.root-servers.org
xxxNb.f.root-servers.org
xxxNc.f.root-servers.org
etc
are hosts all located at the same site "xxxN". Service is distributed
between those hosts at that site in the manner of:
http://www.isc.org/pubs/tn/isc-tn-2004-1.html
Service is distributed between sites in the manner of:
http://www.isc.org/pubs/tn/isc-tn-2003-1.html
I would expect people to see high affinity to a particular site for a
particular client, and much lower affinity between individual hosts
within a site (but still plenty to allow DNS over TCP to function
properly). It will be interesting to see Randy's results.
Today (2004-11-17) the only global nodes are SFO2 and PAO1; all the
rest are local nodes (where "global" and "local" are described at
<http://www.isc.org/pubs/tn/isc-tn-2003-1.html#anchor2>). Both global
nodes live in the same AS.
Joe
