Re: [CCAMP] WG Last Call: WSON documents - draft-ietf-ccamp-rwa-wson-encode
Leeyoung <leeyoung@huawei.com> Tue, 12 November 2013 22:12 UTC
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From: Leeyoung <leeyoung@huawei.com>
To: Lou Berger <lberger@labn.net>, CCAMP <ccamp@ietf.org>, "draft-ietf-ccamp-rwa-wson-encode@tools.ietf.org" <draft-ietf-ccamp-rwa-wson-encode@tools.ietf.org>
Thread-Topic: [CCAMP] WG Last Call: WSON documents - draft-ietf-ccamp-rwa-wson-encode
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Date: Tue, 12 Nov 2013 22:12:40 +0000
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Subject: Re: [CCAMP] WG Last Call: WSON documents - draft-ietf-ccamp-rwa-wson-encode
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Hi Lou, WRT to your comment on: Section 4. The definitions of sub-sub-TLVs are a bit underspecified. Some specific questions to address: - Are there any sub-sub-TLV ordering requirements? - How are multiple sub-sub-TLVs of the same type to be handled? - What is the sub-sub-TLV header (TL format)? - Are there any alignment requirements? - What happens when a sub-sub-TLV is larger than 256 bytes? (There are already systems that advertise 192 wavelengths on a fiber and an application code takes 8 bytes, right? But of course this presents a problem when carried within an RSVP object too.) For the last dash item, "what happens when sub-sub-TLV is larger than 256 bytes", I guess you meant that the RB Info Field (in which to contain sub-sub-TLVs) can exceed 256 bytes as opposed to individual sub-sub-TLVs in the RB Info Field? As for the resolution for this case, should this be addressed in the respective routing and signaling drafts? I am not familiar the method to resolve this kind of issues --- can you suggest some references or relevant text? I think this issue would arise both routing and signaling. Thanks. Young -----Original Message----- From: Lou Berger [mailto:lberger@labn.net] Sent: Tuesday, October 29, 2013 1:27 PM To: CCAMP; draft-ietf-ccamp-rwa-wson-encode@tools.ietf.org Subject: Re: [CCAMP] WG Last Call: WSON documents - draft-ietf-ccamp-rwa-wson-encode Authors, I have some comments on this document. Many are strictly editorial. Note that I'm the document shepherd, see RFC 4858 for more information. - Please address my general comments on the WSON document set - section 1 This document makes use of the Label Set Field encoding of [Gen-Encode] and refers to it as a Wavelength Set Field. Why? Why not just refer to it as Label Set? Perhaps you mean that a Wavelength Set Field is a Label Set Field that MUST carry a label as defined in RFC6205? If so, this needs to be made explicit. (probably in a section other than the introduction.) - section2/3 section alignment with rwa-info It's probably a good idea to align naming and ordering wherever possible. - section 2 1st two paragraphs. Why does this section try to introduce concepts that are defined in 6163 and in [WSON-INFO]? Is something missing from those documents? If so, at least wson info should be fixed. If not, these paragraphs should be replaced with simple terminology/concept references. - Section 2, same comment WRT TLVs as made on general-constraint- encode: The text reads: This document defines the following sub-TLVs pertaining to resources within an optical node: All references to sub-TLVs should dropped, again see related comment in my may on general-constraint-encode. This doesn't hold for sub-sub-TLVs, and I'll get to this below. - Section 3.1 0 1 2 3 4 5 6 7 8 | Connectivity | Why is connectivity a byte here, but only a bit in section 2.1? Either it should be a bit here to, or section 2.1 should be a byte. Note, that this can be fixed in a compatible way by defining it here as: 0 1 2 3 4 5 6 7 8 | Reserved |C| - Section 4. The definitions of sub-sub-TLVs are a bit underspecified. Some specific questions to address: - Are there any sub-sub-TLV ordering requirements? - How are multiple sub-sub-TLVs of the same type to be handled? - What is the sub-sub-TLV header (TL format)? - Are there any alignment requirements? - What happens when a sub-sub-TLV is larger than 256 bytes? (There are already systems that advertise 192 wavelengths on a fiber and an application code takes 8 bytes, right? But of course this presents a problem when carried within an RSVP object too.) If you find you need more specifics, we can discuss / I can propose new text. Feel free to discuss the details on or off list (your choice.) - Section 4.1 Title and 1st sentence don't agree on the element's name. - Section 3.4, 4.1 - Bits I & E are defined here, but I & O are used in parallel ways in Section 3.2. For consistency it should be I & O everywhere (to match input and output). - Section 4.2.1 s/[ITU-G.695.1]/[ITU-G.695] - Section 4.2.2, 4.2.3 Why do you use bit names that are different than the ITU-T definitions for p and s (rather than D and F)? WRT Section 8: - [RFC3471] is an informative reference. - [Gen-Encode] needs to be normative, this document reuses its definitions. - I'm surprised [WSON-Info] is informative (and not normative). Do you think this is correct? That's it on this one, Lou On 10/22/2013 4:34 PM, Lou Berger wrote: > > All, > Given the recent draft submission deadline and only one comment being > received to date, we'd like to extend the WG more time for review. > > These drafts represent significant work by the authors and WG, so > please review and let the WG know what you think (positive or negative)! > > Please have all comments in by October 29. > > Thank you, > Lou (and Deborah) > > On 10/1/2013 12:34 PM, Lou Berger wrote: >> All, >> >> This mail begins working group last call on the WSON documents. As >> there are 6 documents in this set, the last call will be three weeks. >> The documents included in the last call are: >> >> http://tools.ietf.org/html/draft-ietf-ccamp-rwa-info-18 >> (Informational, IPR Disclosed) >> >> http://tools.ietf.org/html/draft-ietf-ccamp-general-constraint-encode >> -11 >> (Standards Track, IPR Disclosed) >> >> http://tools.ietf.org/html/draft-ietf-ccamp-rwa-wson-encode-21 >> (Standards Track) >> >> http://tools.ietf.org/html/draft-ietf-ccamp-gmpls-general-constraints >> -ospf-te-05 >> (Standards Track, IPR Disclosed) >> >> http://tools.ietf.org/html/draft-ietf-ccamp-wson-signal-compatibility >> -ospf-12 >> (Standards Track, IPR Disclosed) >> >> http://tools.ietf.org/html/draft-ietf-ccamp-wson-signaling-06 >> (Standards >> Track) Also has one open issue that will need to be resolved as part >> of LC, see http://trac.tools.ietf.org/wg/ccamp/trac/ticket/52. >> >> This working group last call ends on October 22. Comments should be >> sent to the CCAMP mailing list. Please remember to include the >> technical basis for any comments. >> >> Positive comments, e.g., "I've reviewed this document and believe it >> is ready for publication", are welcome! >> >> Please note that we're still missing some IPR statements. Any >> forthcoming publication request will be delayed by late IPR >> statements/disclosures. >> >> >> Thank you, >> Lou (and Deborah) >> _______________________________________________ >> CCAMP mailing list >> CCAMP@ietf.org >> https://www.ietf.org/mailman/listinfo/ccamp >> >> >> >> > _______________________________________________ > CCAMP mailing list > CCAMP@ietf.org > https://www.ietf.org/mailman/listinfo/ccamp > > > >
- [CCAMP] WG Last Call: WSON documents - rwa-info, … Lou Berger
- Re: [CCAMP] WG Last Call: WSON documents - rwa-in… Margaria, Cyril (Coriant - DE/Munich)
- Re: [CCAMP] WG Last Call: WSON documents - rwa-in… Lou Berger
- Re: [CCAMP] WG Last Call: WSON documents - rwa-in… Leeyoung
- Re: [CCAMP] WG Last Call: WSON documents - rwa-in… Giovanni Martinelli (giomarti)
- Re: [CCAMP] WG Last Call: WSON documents - rwa-in… Giovanni Martinelli (giomarti)
- Re: [CCAMP] WG Last Call: WSON documents - rwa-in… Lou Berger
- Re: [CCAMP] WG Last Call: WSON documents - draft-… Lou Berger
- Re: [CCAMP] WG Last Call: WSON documents - draft-… Lou Berger
- Re: [CCAMP] WG Last Call: WSON documents - draft-… Lou Berger
- Re: [CCAMP] WG Last Call: WSON documents - draft-… Lou Berger
- Re: [CCAMP] WG Last Call: WSON documents - draft-… Lou Berger
- Re: [CCAMP] WG Last Call: WSON documents - draft-… Lou Berger
- Re: [CCAMP] WG Last Call: WSON documents - rwa-in… Leeyoung
- Re: [CCAMP] WG Last Call: WSON documents - draft-… Lou Berger
- Re: [CCAMP] WG Last Call: WSON documents - rwa-in… Lou Berger
- Re: [CCAMP] WG Last Call: WSON documents - rwa-in… Leeyoung
- Re: [CCAMP] WG Last Call: WSON documents - rwa-in… Leeyoung
- Re: [CCAMP] WG Last Call: WSON documents - draft-… Leeyoung
- Re: [CCAMP] WG Last Call: WSON documents - draft-… Leeyoung
- Re: [CCAMP] WG Last Call: WSON documents - draft-… Leeyoung
- Re: [CCAMP] WG Last Call: WSON documents - draft-… Leeyoung
- Re: [CCAMP] WG Last Call: WSON documents - draft-… Lou Berger
- Re: [CCAMP] WG Last Call: WSON documents - draft-… Lou Berger
- Re: [CCAMP] WG Last Call: WSON documents - draft-… Lou Berger
- Re: [CCAMP] WG Last Call: WSON documents - draft-… Leeyoung
- Re: [CCAMP] WG Last Call: WSON documents - draft-… Leeyoung
- Re: [CCAMP] WG Last Call: WSON documents - draft-… Leeyoung
- Re: [CCAMP] WG Last Call: WSON documents - draft-… Lou Berger
- Re: [CCAMP] WG Last Call: WSON documents - draft-… Lou Berger
- Re: [CCAMP] WG Last Call: WSON documents - draft-… Lou Berger
- Re: [CCAMP] WG Last Call: WSON documents - draft-… Leeyoung
- Re: [CCAMP] WG Last Call: WSON documents - draft-… Lou Berger
- Re: [CCAMP] WG Last Call: WSON documents - draft-… Leeyoung
- Re: [CCAMP] WG Last Call: WSON documents - draft-… Lou Berger
- Re: [CCAMP] WG Last Call: WSON documents - draft-… Leeyoung
- Re: [CCAMP] WG Last Call: WSON documents - draft-… Lou Berger
- Re: [CCAMP] WG Last Call: WSON documents - draft-… Lou Berger
- Re: [CCAMP] WG Last Call: WSON documents - draft-… Leeyoung
- Re: [CCAMP] WG Last Call: WSON documents - draft-… Lou Berger
- Re: [CCAMP] WG Last Call: WSON documents - draft-… Giovanni Martinelli (giomarti)
- Re: [CCAMP] WG Last Call: WSON documents - draft-… Giovanni Martinelli (giomarti)
- Re: [CCAMP] WG Last Call: WSON documents - draft-… Giovanni Martinelli (giomarti)
- Re: [CCAMP] WG Last Call: WSON documents - draft-… Lou Berger