[153021] in North American Network Operators' Group
Re: DNS anycasting - multiple DNS servers on same subnet Vs
daemon@ATHENA.MIT.EDU (Stephane Bortzmeyer)
Mon May 28 15:33:41 2012
Date: Mon, 28 May 2012 21:32:29 +0200
From: Stephane Bortzmeyer <bortzmeyer@nic.fr>
To: Anurag Bhatia <me@anuragbhatia.com>
In-Reply-To: <25604_1338233229_4FC3D18D_25604_1794_1_CAJ0+aXabEt=3eG-JFH1TXXWGS3JsnuAtqzQuGA78bj-6oxAgMQ@mail.gmail.com>
Cc: NANOG Mailing List <nanog@nanog.org>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
On Tue, May 29, 2012 at 12:21:10AM +0530,
Anurag Bhatia <me@anuragbhatia.com> wrote
a message of 28 lines which said:
> I know few registry/registrars which do not accept both (or all)
> name servers of domain name on same subnet.
Since my employer is one of these registries, let me mention that I
fully agree with David Conrad here.
On Tue, May 29, 2012 at 12:54:01AM +0530,
Anurag Bhatia <me@anuragbhatia.com> wrote
a message of 42 lines which said:
> I am building redundancy within that setup. I mean it will be
> software based BGP so if hardware if fried up, it will break BGP
> session and pull off routes anyway and for cases like DNS server
> (software) failure, I will monitor it via simple bash script which
> can turn bgp daemon down.
You will address *some* failure modes with this setup but not
all. Again, see David Conrad's examples of a fat finger adding your
prefix in a route-map.
