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Re: [DNSOP] Anycast and DNS questions

Toerless Eckert <eckert@cisco.com> Wed, 06 August 2014 13:20 UTC

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Date: Wed, 06 Aug 2014 06:20:38 -0700
From: Toerless Eckert <eckert@cisco.com>
To: Tony Finch <dot@dotat.at>
Message-ID: <20140806132037.GH5546@cisco.com>
References: <20140806114759.GF5546@cisco.com> <alpine.LSU.2.00.1408061406030.13901@hermes-1.csi.cam.ac.uk>
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Subject: Re: [DNSOP] Anycast and DNS questions
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Hah! i am using that NTP one, but it didn't come to mind when asking the question.
Have to read up on that AS112. Thanks

Thanks!

On Wed, Aug 06, 2014 at 02:09:18PM +0100, Tony Finch wrote:
> Toerless Eckert <eckert@cisco.com> wrote:
> >
> > b) How common are deployments in which the information returned by different
> >    anycast member DNS servers for the same query would be different,
> >    aka: to "localize" lookup results, such as pointing to
> >    local CDN caches or the like ? What would be the most well known examples
> >    of such deployed instances ?
> 
> A good non-commercial example is http://www.pool.ntp.org
> 
> > c) Any example in which the DNS servers utilizing a single shared
> >    IP address (anycast address) are run by different operators ?
> 
> See https://www.as112.net (but unfortunately its X.509 certificate has
> expired).
> 
> Tony.
> -- 
> f.anthony.n.finch  <dot@dotat.at>  http://dotat.at/
> Trafalgar: Mainly northerly or northwesterly 5 or 6 in southeast, otherwise
> variable 3 or 4. Slight or moderate. Fair. Good.

-- 
---
Toerless Eckert, eckert@cisco.com
Cisco NSSTG Systems & Technology Architecture
SDN: Let me play with the network, mommy!

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