Re: [trill] RtgDir review: draft-ietf-trill-mtu-negotiation-02
"Susan Hares" <shares@ndzh.com> Tue, 10 May 2016 21:30 UTC
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From: Susan Hares <shares@ndzh.com>
To: 'Alia Atlas' <akatlas@gmail.com>, 'Mingui Zhang' <zhangmingui@huawei.com>
References: <57212222.5080904@orange.com> <4552F0907735844E9204A62BBDD325E787C858FD@NKGEML515-MBX.china.huawei.com> <572706E7.7050005@orange.com> <4552F0907735844E9204A62BBDD325E787C865EB@NKGEML515-MBX.china.huawei.com> <5729D091.2040904@orange.com> <4552F0907735844E9204A62BBDD325E787C889B1@NKGEML515-MBX.china.huawei.com> <57319CE8.9020300@orange.com> <4552F0907735844E9204A62BBDD325E787C88C39@NKGEML515-MBX.china.huawei.com> <CAG4d1reZt3a+VJ9B5ijzvu-eLW32YW5gBnWix0OgQ_vjJ5Qy2A@mail.gmail.com>
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Date: Tue, 10 May 2016 17:30:36 -0400
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Cc: rtg-ads@ietf.org, rtg-dir@ietf.org, draft-ietf-trill-mtu-negotiation.all@ietf.org, trill@ietf.org, 'Julien Meuric' <julien.meuric@orange.com>
Subject: Re: [trill] RtgDir review: draft-ietf-trill-mtu-negotiation-02
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Julien: Thank you from one of the TRILL WG chairs. Sue From: Alia Atlas [mailto:akatlas@gmail.com] Sent: Tuesday, May 10, 2016 1:06 PM To: Mingui Zhang Cc: Julien Meuric; draft-ietf-trill-mtu-negotiation.all@ietf.org; rtg-ads@ietf.org; rtg-dir@ietf.org; trill@ietf.org Subject: Re: RtgDir review: draft-ietf-trill-mtu-negotiation-02 Julien, Thank you very much for your review! Mingui, Thank you for addressing the comments. Regards, Alia On Tue, May 10, 2016 at 7:16 AM, Mingui Zhang <zhangmingui@huawei.com> wrote: Hi Julien, Thanks for pointing it out. That typo will be fixed together with other comments we would receive. Thanks, Mingui > -----Original Message----- > From: Julien Meuric [mailto:julien.meuric@orange.com] > Sent: Tuesday, May 10, 2016 4:34 PM > To: Mingui Zhang > Cc: draft-ietf-trill-mtu-negotiation.all@ietf.org; rtg-ads@ietf.org; rtg-dir@ietf.org; > trill@ietf.org > Subject: Re: RtgDir review: draft-ietf-trill-mtu-negotiation-02 > > Hi Mingui, > > This version seems to address my comment. > > Please note a new typo on page 8: s/any LPS/any LSP/ > > Thanks, > > Julien > > > May. 10, 2016 - zhangmingui@huawei.com: > > Hi Julien, > > > > I have uploaded the 04 version. Please take a look. > > > > Thanks, > > Mingui > > > >> -----Original Message----- > >> From: Julien Meuric [mailto:julien.meuric@orange.com] > >> Sent: Wednesday, May 04, 2016 6:36 PM > >> > >> Hi Mingui, > >> > >> I have looked at the diff of your update and have noticed that several > "should" > >> have been replaced by "need[s] to": I appreciate that you acknowledge > >> my comment on this, but none of them being RFC 2119 keyword, I still > >> doubt this matches Standards Track expectations. > >> > >> I caught a nit in section 3: s/is sent to/is set to/ > >> > >> Regards, > >> > >> Julien > >> > >> > >> May. 03, 2016 - zhangmingui@huawei.com: > >>> Hi Julien, > >>> > >>> The updated version has just been uploaded. > >>> > >>> Thanks, > >>> Mingui > >>> > >>>> -----Original Message----- > >>>> From: Julien Meuric [mailto:julien.meuric@orange.com] > >>>> Sent: Monday, May 02, 2016 3:51 PM > >>>> > >>>> Hi Mingui, > >>>> > >>>> About the "updated RFCs" issue below, my point is: "please make > >>>> sure the text and the hearder are complete". I just had a quick > >>>> look at those references, you know better than me which are actually > relevant. > >>>> > >>>> I am looking forward to the updated version. > >>>> > >>>> Thanks, > >>>> > >>>> Julien > >>>> > >>>> > >>>> Apr. 29, 2016 - zhangmingui@huawei.com: > >>>>> Hi Julien, > >>>>> > >>>>> Thanks for the comments! Much appreciated! > >>>>> > >>>>> Please see in-lines below. An updated version will soon be > >>>>> uploaded to resolve > >>>> the comments. > >>>>> > >>>>> Thanks, > >>>>> Mingui > >>>>> > >>>>>> -----Original Message----- > >>>>>> From: Julien Meuric [mailto:julien.meuric@orange.com] > >>>>>> Sent: Thursday, April 28, 2016 4:34 AM > >>>>>> > >>>>>> Hello, > >>>>>> > >>>>>> I have been selected as the Routing Directorate reviewer for this draft. > >>>>>> The Routing Directorate seeks to review all routing or > >>>>>> routing-related drafts as they pass through IETF last call and > >>>>>> IESG review, and sometimes on special request. The purpose of the > >>>>>> review is to > >>>> provide assistance to the Routing ADs. > >>>>>> For more information about the Routing Directorate, please see > >>>>>> http://trac.tools.ietf.org/area/rtg/trac/wiki/RtgDir > >>>>>> > >>>>>> Although these comments are primarily for the use of the Routing > >>>>>> ADs, it would be helpful if you could consider them along with > >>>>>> any other IETF Last Call comments that you receive, and strive to > >>>>>> resolve them through discussion or by updating the draft. > >>>>>> > >>>>>> Document: draft-ietf-trill-mtu-negotiation-02.txt > >>>>>> Reviewer: Julien Meuric > >>>>>> Review Date: April 27, 2016 > >>>>>> IETF LC End Date: April 5, 2016 > >>>>>> > >>>>>> Intended Status: Standards Track > >>>>>> > >>>>>> > >>>>>> *Summary:* > >>>>>> I have some minor concerns about this document that I think > >>>>>> should be resolved before publication. > >>>>>> > >>>>>> *Comments:* > >>>>>> Even though it requires to browse some other TRILL (normative) > >>>>>> documents, the mechanism itself is simple and well described. > >>>>>> Nevertheless, the specification deserves some improvement when it > >>>>>> comes to obligations and options: this was part of my expectation > >>>>>> after I realized it was upgrading a short section of the base > >>>>>> document (RFC 6325), which needs to be emphasized as well. > >>>>> > >>>>> In the abstract, it's already mentioned as "optional updates" to > >>>>> RFC 6325. I think > >>>> "Updates: 6325 " needs to appear in the page header as well. > >>>>> > >>>>>> > >>>>>> *Minor Issues:* > >>>>>> - The document is ST and references RFC 2119. There a some "MUST" > >>>>>> and one "SHOULD", many of them inherited from specifications out > >>>>>> of the referenced documents. On the other side, "must" and "should" > >>>>>> are commonly used. This MUST be brought up to ST expectations. > >>>>> > >>>>> The usage of "must" and "should" will be updated as needed. I have > >>>>> checked all > >>>> those appearances. The changes would be editorial. > >>>>> > >>>>>> - The document claims to only update RFC 7177. It seems however > >>>>>> that it also updates RFC 6325 (section 4.3.2), RFC 7176 and maybe > >>>>>> even RFC > >> 7780. > >>>>> > >>>>> Actually, I don't think this document updates RFC7176. It simply > >>>>> makes use of > >>>> the MTU Sub-TLV defined in RFC 7176. > >>>>> The specification about the originatingL1LSPBufferSize of an > >>>>> unreachable > >>>> RBridge is a slight update to RFC7780. This will be emphasized. > >>>>> > >>>>>> That should be either acknowledged or clarified. The 4th > >>>>>> paragraph of the introduction tries to tackle that topic, but it > >>>>>> is not clear enough in defining the position of the document with > >>>>>> respect to previously > >>>> defined mechanisms. > >>>>> > >>>>> The updated to RFC 6325 will be emphasized in this paragraph. The > >>>>> backward > >>>> compatibility will be moved to here as well. It will help the positioning. > >>>>> > >>>>>> - The 3rd paragraph of the introduction duplicates the beginning > >>>>>> of the following section 2. A possible way to limit this > >>>>>> repetition effect may be to summarize that part of the introduction. > >>>>> > >>>>> Yes, summarization is the proper way. > >>>>> > >>>>>> - Section 3 specifies an algorithm. Even if it does not rely on a > >>>>>> formal language, consistency would be valuable. My mind compiler > >>>>>> would > >>>> suggest: > >>>>>> * "If" is followed by "then" only once: "then" keyword to > >>>>>> be > >> dropped? > >>>>>> * The algorithm relies on a break/stop or continue > >>>>>> principle; as such, the instance of "Else" at the end should be > >>>>>> replaced by "<line > >>>>>> break> 4) Repeat Step1"; > >>>>>> * "is set to" and "<--" seem to be similar: please pick one or > clarify; > >>>>>> * to improve readability, I would drop the double naming > >>>>>> introduced with X, > >>>>>> X1 and X2 and rely on explicit variable names all along, as in > >>>>>> the > >>>>>> text: e.g., "linkMtuSize" instead of X, "lowerBound" for X1 and > >> "upperBound" > >>>> instead of X2. > >>>>> > >>>>> Sure. Explicit names will be used for the sake of readability. > >>>>> > >>>>>> > >>>>>> *Nits:* > >>>>> > >>>>> The following nits will be fixed as suggested. > >>>>> > >>>>>> ------ > >>>>>> "Updates" field in header > >>>>>> --- > >>>>>> - I think the "RFC" acronym should appear. > >>>>>> - The list may be extended with RFC RFC 6325, RFC 7176 and maybe > >>>>>> even RFC 7780. > >>>>>> ------ > >>>>>> Abstract > >>>>>> --- > >>>>>> - s/campus wide MTU feature/campus-wide MTU feature/ > >>>>>> - s/campus wide capability/campus-wide capability/ > >>>>>> - s/link local packets/link-local packets/ > >>>>>> - s/link local MTUs/link-local MTUs/ > >>>>>> - "It updates RFC..." duplicates header: either to drop or make > >>>>>> more specific to point to precise sections/mechanisms. > >>>>>> ------ > >>>>>> Section 1. > >>>>>> --- > >>>>>> - s/link scope PDUs can/link-scoped PDUs can/ > >>>>>> ------ > >>>>>> Section 2. > >>>>>> --- > >>>>>> - s/campus wide Sz MTU/campus-wide Sz MTU/ > >>>>>> - s/area wide scope/area-wide scope/ > >>>>>> - s/domain wide scope/domain wide scope/ > >>>>>> - s/L1 Circuit Scoped/L1 Circuit-Scoped/ > >>>>>> - "limited to 1470 to 65,535 bytes": I cannot parse it, is it > >>>>>> meant to be a > >> range? > >>>>>> ------ > >>>>>> Section 4. > >>>>>> - OLD > >>>>>> "while RB1 normally ignores link state information for any IS-IS > >>>>>> unreachable RBridge RB2, originatingL1LSPBufferSize is an exception." > >>>>>> NEW > >>>>>> "while in most cases RB1 ignores link state information for IS-IS > >>>>>> unreachable RBridge RB2, originatingL1LSPBufferSize is meaningful." > >>>>>> [current wording suggests it is adding an exception to a > >>>>>> mandatory behavior, which AFAIU it does not] > >>>>> > >>>>> OK. Will update the words. > >>>>> > >>>>>> ------ > >>>>>> Section 7. > >>>>>> --- > >>>>>> - "tested size can be advertised": "can" is to be addressed as > >>>>>> part of the loose RFC 2119 wording comment. > >>>>> > >>>>> Will use the word "MAY" instead. > >>>>> > >>>>>> ------ > >>>>>> Section 8. > >>>>>> --- > >>>>>> - "value [...] had been reported": "reported" puzzles me, maybe > "tested" > >>>>>> was meant? > >>>>>> - The 3rd paragraph "For an Lz-ignorant [...] link-wide Lz." > >>>>>> should be moved up to become the second paragraph, so as to > >>>>>> clarify what an > >>>> Lz-ignorant is. > >>>>> > >>>>> OK. It will be moved up. > >>>>> > >>>>>> - "The extension of TRILL MTU negociation...": this is an > >>>>>> explicit positioning which should be mentioned earlier in the I-D. > >>>>> > >>>>> > >>>>> OK. This will be moved to the introduction. > >>>>> > >>>>>> ------ > >>>>>> Section 10. > >>>>>> --- > >>>>>> - RFC 7180 bis is now RFC 7780. > >>>>> > >>>>> Yes, this will be updated. > >>>>> > >>>>>> --- > >>>>>> > >>>>>> Regards, > >>>>>> > >>>>>> Julien > >>>>>
- [trill] RtgDir review: draft-ietf-trill-mtu-negot… Julien Meuric
- Re: [trill] RtgDir review: draft-ietf-trill-mtu-n… Mingui Zhang
- Re: [trill] RtgDir review: draft-ietf-trill-mtu-n… Julien Meuric
- Re: [trill] RtgDir review: draft-ietf-trill-mtu-n… Mingui Zhang
- Re: [trill] RtgDir review: draft-ietf-trill-mtu-n… Julien Meuric
- Re: [trill] RtgDir review: draft-ietf-trill-mtu-n… Mingui Zhang
- Re: [trill] RtgDir review: draft-ietf-trill-mtu-n… Julien Meuric
- Re: [trill] RtgDir review: draft-ietf-trill-mtu-n… Mingui Zhang
- Re: [trill] RtgDir review: draft-ietf-trill-mtu-n… Alia Atlas
- Re: [trill] RtgDir review: draft-ietf-trill-mtu-n… Susan Hares