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Re: [DNSOP] New Version Notification for draft-pusateri-dnsop-update-timeout-00.txt

Tom Pusateri <pusateri@bangj.com> Mon, 27 August 2018 19:34 UTC

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From: Tom Pusateri <pusateri@bangj.com>
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Date: Mon, 27 Aug 2018 15:34:22 -0400
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To: Ted Lemon <mellon@fugue.com>
References: <153507165910.12116.7113196606839876181.idtracker@ietfa.amsl.com> <AFB90F6F-5D99-4403-AAB6-1123727973E6@bangj.com> <5B7F5E07.5080100@redbarn.org> <7F91FFF7-71C3-4F8E-82CD-266B170983E0@bangj.com> <C0EE2719-B662-4231-AF51-D3B98B00AD0D@fugue.com> <6D607922-393D-4549-AAFA-49279C260CA4@bangj.com> <3C6100BD-62D6-41ED-B7BF-679F0D4E4113@fugue.com> <5063A32B-4877-4860-BA73-CCB068AB7FCB@bangj.com> <CAPt1N1=tXZNgT6ygAaLFfOMze7hbGZ6q_eN1C3iEo9ryBNcyLg@mail.gmail.com> <98EF2CAC-7C13-4E68-8D2B-EC0659EA9646@bangj.com> <CAPt1N1kFNY4=CUMsTvXmeRREeLAkY8xpBdw4vPDxujgke6QT8A@mail.gmail.com> <963460AA-14BB-44AA-87CA-7F09A707DB5D@bangj.com> <47AE41F8-9F5F-4CC8-B4F0-7E8191011E99@bangj.com> <F4335D3A-0241-437F-A428-8EA95F0A1C18@fugue.com> <56E8B2A6-7B65-4D25-B102-9EFA7E2CBE7B@bangj.com> <86D465A4-F390-4370-83EC-0E72FBE115BE@isc.org> <CAPt1N1=xy+JAtgvvF_+9LiTiefbpTy_Vd0b8gswozA1K1C57Nw@mail.gmail.com> <99FA0B76-D225-45FC-A33C-B65E2673A45E@isc.org> <CAPt1N1kp8Tg5tWEiDCMuMNTmehRsBSkkC1=u+RcvkG6ZCegE-g@mail.gmail.com> <977DF12E-178B-4500-B045-F27BF1CDF51C@isc.org> <CAPt1N1=cafnVmnNM2eSF67QbgRk8hUEAd2Gwuqx4OUehPZSmyQ@mail.gmail.com> <AC3FE6CF-CC11-44D3-8C50-BC19C295F001@bangj.com> <CAPt1N1ksyp1t_e9Qd4FTtTVsZr9+VDm11MR-jS9Oz8Kpz7J7AQ@mail.gmail.com> <9B4A76C4-3BA6-46EC-90EB-E78065FD8BD3@bangj.com> <CAPt1N1=o3KRa_X2KTuW1=KagOv1R0KM=QvT0QBf5YrOSWTr9mw@mail.gmail.com> <461B2749-E2A4-42B8-9FB3-824D96039423@bangj.com> <DEE0C8C8-5557-4D97-B3C8-6535F3EB3693@bangj.com> <CAPt1N1knPwGFy38c0=xNT_mHwo=vQZmzqNJHc_=Oshcr1OH8sQ@mail.gmail.com> <C273A347-C918-428F-9CB9-FBF9426F913A@bangj.com> <CAPt1N1mTSYcmaw3TpO1UnHA1r4CF2+BQR9UG-kSQaiTxGtk24g@mail.gmail.com> <A3BB12A2-1159-40D6-8F24-96226F98E1F5@bangj.com> <AD5AAC94-077C-47A6-A28C-9FA7D2A78E2D@isc.org> <CAPt1N1mLVo917KWhU9msKsPaJWRquF=S0B796xa36+xwuGQGPw@mail.gmail.com> <7259D997-7915-4664-AE6E-6DE20A08852E@bangj.com> <CAPt1N1k3fK4YsYUJG2zNvspPjdDxZsFsQb9eqMT1pXzoxrWDQQ@mail.gmail.com>
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Subject: Re: [DNSOP] New Version Notification for draft-pusateri-dnsop-update-timeout-00.txt
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Not true. You have PTR records with the same service name from multiple clients each with different RDATA and unique timeouts as I demonstrated yesterday in the example.

Tom


> On Aug 27, 2018, at 3:27 PM, Ted Lemon <mellon@fugue.com> wrote:
> 
> For service instance names, there is only one service. So there shouldn’t be a problem. 
> 
> On Mon, Aug 27, 2018 at 2:28 PM Tom Pusateri <pusateri@bangj.com <mailto:pusateri@bangj.com>> wrote:
> Because even if you add TYPE, you have multiple PTR records (instance names) with the same owner name, class, and type that can timeout differently.
> 
> Tom
> 
>> On Aug 26, 2018, at 11:20 PM, Ted Lemon <mellon@fugue.com <mailto:mellon@fugue.com>> wrote:
>> 
>> If we do that, why do we need a hash at all?
>> 
>> On Sun, Aug 26, 2018 at 10:51 PM Mark Andrews <marka@isc.org <mailto:marka@isc.org>> wrote:
>> I would add a covered type field to TIMEOUT (c.f. RRSIG).  I also wouldn’t have more than
>> a single timeout per record.  I’m tempted to say a single hash as well.  If there is multiple
>> timeouts per record then the blocks need to be sorted in timeout order.
>> 
>> Covered is there to reduce the number of RR’s that need to be hashed to remove a record.
>> It will also reduce the size of IXFR’s as you don’t need to re-construct a new TIMEOUT
>> record that covers every timeout at a name on each change.
>> 
>> For all records at a name is often more expensive that for all records of type covered.
>> Name servers are optimised for looking up <name,type,class> tuples rather than <name,class>
>> tuples.
>> 
>> Sorting of timeout blocks is so that you can look at the first timeout when working out
>> which TIMEOUT needs to be processed first in a zone.
>> 
>> -- 
>> Mark Andrews, ISC
>> 1 Seymour St., Dundas Valley, NSW 2117, Australia <https://maps.google.com/?q=1+Seymour+St.,+Dundas+Valley,+NSW+2117,+Australia&entry=gmail&source=g>
>> PHONE: +61 2 9871 4742              INTERNET: marka@isc.org <mailto:marka@isc.org>
>> 
> 
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