Re: [Dots] Alissa Cooper's Discuss on draft-ietf-dots-signal-channel-31: (with DISCUSS and COMMENT)
<mohamed.boucadair@orange.com> Fri, 10 May 2019 05:35 UTC
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From: mohamed.boucadair@orange.com
To: Alissa Cooper <alissa@cooperw.in>
CC: IESG <iesg@ietf.org>, "draft-ietf-dots-signal-channel@ietf.org" <draft-ietf-dots-signal-channel@ietf.org>, Liang Xia <frank.xialiang@huawei.com>, "dots@ietf.org" <dots@ietf.org>, "dots-chairs@ietf.org" <dots-chairs@ietf.org>
Thread-Topic: Alissa Cooper's Discuss on draft-ietf-dots-signal-channel-31: (with DISCUSS and COMMENT)
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Date: Fri, 10 May 2019 05:35:07 +0000
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Subject: Re: [Dots] Alissa Cooper's Discuss on draft-ietf-dots-signal-channel-31: (with DISCUSS and COMMENT)
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Hi Alissa, The main reason is that the examples in the draft are using the JSON encoding of YANG modelled data. Cheers, Med > -----Message d'origine----- > De : Alissa Cooper [mailto:alissa@cooperw.in] > Envoyé : jeudi 9 mai 2019 23:09 > À : Alissa Cooper > Cc : IESG; draft-ietf-dots-signal-channel@ietf.org; Liang Xia; > dots@ietf.org; dots-chairs@ietf.org > Objet : Re: Alissa Cooper's Discuss on draft-ietf-dots-signal-channel-31: > (with DISCUSS and COMMENT) > > Thanks, the changes look good. However I still don’t understand why RFC > 7951 is listed as a normative reference. > > Alissa > > > > On May 1, 2019, at 9:55 PM, Alissa Cooper via Datatracker > <noreply@ietf.org> wrote: > > > > Alissa Cooper has entered the following ballot position for > > draft-ietf-dots-signal-channel-31: Discuss > > > > When responding, please keep the subject line intact and reply to all > > email addresses included in the To and CC lines. (Feel free to cut this > > introductory paragraph, however.) > > > > > > Please refer to https://www.ietf.org/iesg/statement/discuss- > criteria.html > > for more information about IESG DISCUSS and COMMENT positions. > > > > > > The document, along with other ballot positions, can be found here: > > https://datatracker.ietf.org/doc/draft-ietf-dots-signal-channel/ > > > > > > > > ---------------------------------------------------------------------- > > DISCUSS: > > ---------------------------------------------------------------------- > > > > = Section 3 = > > > > "By default, a DOTS signal channel MUST run over port number TBD as > > defined in Section 9.1, for both UDP and TCP, unless the DOTS server > > has a mutual agreement with its DOTS clients to use a different port > > number. DOTS clients MAY alternatively support means to dynamically > > discover the ports used by their DOTS servers (e.g., > > [I-D.boucadair-dots-server-discovery])." > > > > MUST implies an absolute requirement, so "MUST ... unless" is a > problematic > > construction. Furthermore, it doesn't make sense together with "MAY > > alternatively," which indicates that port number discovery is an > alternative to > > the fixed to-be-assigned port. > > > > I didn't have time to get very far into draft-boucadair-dots-server- > discovery, > > but it appears that it does not mandate support for any single discovery > > mechanism for clients and servers to support. If so, that > "alternatively" seems > > like more of a problem, since it allows for there to be no interoperable > > mechanism for clients to discover server ports. I think maybe what was > intended > > here was: > > > > s/MUST/SHOULD/ > > s/MAY alternatively/MAY additionally/ > > > > = Section 4.4.1 = > > > > (1) > > "In deployments where server-domain DOTS gateways are enabled, > > identity information about the origin source client domain SHOULD be > > propagated to the DOTS server. That information is meant to assist > > the DOTS server to enforce some policies such as grouping DOTS > > clients that belong to the same DOTS domain, limiting the number of > > DOTS requests, and identifying the mitigation scope. These policies > > can be enforced per-client, per-client domain, or both. Also, the > > identity information may be used for auditing and debugging purposes." > > > > Does "identity information" just refer to cdid, or something else? > > > > (2) The constructions "MUST ... (absent explicit policy/configuration > > otherwise)" are problematic. I'm assuming these are meant to be SHOULDs. > > > > = Section 13.1 = > > > > I don't understand why RFC 7951 is a normative reference but > > draft-ietf-core-yang-cbor is an informative reference. > > > > > > ---------------------------------------------------------------------- > > COMMENT: > > ---------------------------------------------------------------------- > > > > = Section 4.4.1 = > > > > "The 'cuid' is intended to be stable when communicating with a > > given DOTS server, i.e., the 'cuid' used by a DOTS client SHOULD > > NOT change over time. " > > > > Why is this the recommended behavior? > > > >
- [Dots] Alissa Cooper's Discuss on draft-ietf-dots… Alissa Cooper via Datatracker
- Re: [Dots] Alissa Cooper's Discuss on draft-ietf-… mohamed.boucadair
- Re: [Dots] Alissa Cooper's Discuss on draft-ietf-… Alexey Melnikov
- Re: [Dots] Alissa Cooper's Discuss on draft-ietf-… mohamed.boucadair
- Re: [Dots] Alissa Cooper's Discuss on draft-ietf-… Alissa Cooper
- Re: [Dots] Alissa Cooper's Discuss on draft-ietf-… Konda, Tirumaleswar Reddy
- Re: [Dots] Alissa Cooper's Discuss on draft-ietf-… Benjamin Kaduk
- Re: [Dots] Alissa Cooper's Discuss on draft-ietf-… Benjamin Kaduk
- Re: [Dots] Alissa Cooper's Discuss on draft-ietf-… mohamed.boucadair
- Re: [Dots] Alissa Cooper's Discuss on draft-ietf-… mohamed.boucadair
- Re: [Dots] Alissa Cooper's Discuss on draft-ietf-… Barry Leiba
- Re: [Dots] Alissa Cooper's Discuss on draft-ietf-… mohamed.boucadair
- Re: [Dots] Alissa Cooper's Discuss on draft-ietf-… Alissa Cooper
- Re: [Dots] Alissa Cooper's Discuss on draft-ietf-… mohamed.boucadair
- Re: [Dots] Alissa Cooper's Discuss on draft-ietf-… Alissa Cooper
- Re: [Dots] Alissa Cooper's Discuss on draft-ietf-… mohamed.boucadair