Re: [DNSOP] Review of draft-ietf-dnsop-cookies-00

P Vixie <paul@redbarn.org> Tue, 16 December 2014 18:33 UTC

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From: P Vixie <paul@redbarn.org>
Date: Tue, 16 Dec 2014 10:32:08 -0800
To: Mukund Sivaraman <muks@isc.org>
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Subject: Re: [DNSOP] Review of draft-ietf-dnsop-cookies-00
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On December 16, 2014 9:47:34 AM PST, Mukund Sivaraman <muks@isc.org> wrote:
>Hi Paul
>
>On Tue, Dec 16, 2014 at 09:20:12AM -0800, Paul Vixie wrote:
>> 3 round trips, 7 packets, for an isolated tcp/53 query.
>> 
>> s   ->
>>     <- s+a
>> a   ->
>> q   ->
>>     <- r+a
>> f+a ->
>>     <- f+a
>
>It's 2 round trips to get at the data, answer the question. FIN is
>later.

The total transaction time includes all time during which state is held. That third round trip is in your departmental budget and will show up at scale or in benchmarks. So you have to count it.

Vixie
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