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Re: [dnsext] New Version Notification for draft-ah-dnsext-rfc1995bis-ixfr-02

Masataka Ohta <mohta@necom830.hpcl.titech.ac.jp> Mon, 22 August 2011 13:07 UTC

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Date: Mon, 22 Aug 2011 22:07:02 +0900
From: Masataka Ohta <mohta@necom830.hpcl.titech.ac.jp>
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Subject: Re: [dnsext] New Version Notification for draft-ah-dnsext-rfc1995bis-ixfr-02
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Shane Kerr wrote:

> Consider an environment where one has 2 distribution servers at a node,

Only 2 distribution servers? It should be a toy zone.

And, do you mean "zone", not "node"?

> If the node suffers a power failure, then it is quite possible that both
> distribution servers will need a full AXFR when they restart.

Are you seriously saying that it is quite possible that two servers
simultaneously loss checkpointing information because of power
failure?

Even then, there is no point of IXFR-only because, with your example,
neither server can offer IXFR.

> If zone
> updates are frequent, there is a good chance that they will not have the
> exact same starting serial.

So?

> One solution is to have a single distribution server.

It's no solution. I'm afraid you completely misunderstand DNS.

							Masataka Ohta

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