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Re: [DNSOP] Anycast and DNS questions

David Conrad <drc@virtualized.org> Wed, 27 August 2014 14:04 UTC

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From: David Conrad <drc@virtualized.org>
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Date: Wed, 27 Aug 2014 07:04:09 -0700
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References: <20140806114759.GF5546@cisco.com>, <25907D96-0076-417A-8DB9-41A5A178D479@ianai.net>, <20140806123205.GG5546@cisco.com> <2014082716115865363718@cnnic.cn>
To: Guangqing Deng <dengguangqing@cnnic.cn>
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Archived-At: http://mailarchive.ietf.org/arch/msg/dnsop/xxNRltwIDeHdBemCmn4CUgwezgs
Cc: dnsop <dnsop@ietf.org>
Subject: Re: [DNSOP] Anycast and DNS questions
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Hi,

On Aug 27, 2014, at 1:11 AM, Guangqing Deng <dengguangqing@cnnic.cn> wrote:
> Here, one interesting question  can be raised is what is the best localization policy for DNS? Should DNS clients visit the anycast server with the least network latency (which can be measured by RTT) or minimal AS hops or minimal router hops? In other words, the question is about what is the best assessment index for DNS system.

I suspect DNS clients care primarily about getting correct answers as quickly as possible.  I doubt they care about hops be they AS or router.

Regards,
-drc

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