Re: [multimob] Working group last call for draft-ietf-multimob-fmipv6-pfmipv6-multicast-05
"Thomas C. Schmidt" <schmidt@informatik.haw-hamburg.de> Thu, 26 June 2014 09:33 UTC
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From: "Thomas C. Schmidt" <schmidt@informatik.haw-hamburg.de>
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Subject: Re: [multimob] Working group last call for draft-ietf-multimob-fmipv6-pfmipv6-multicast-05
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Hi all, as no more comments arrived, we have just updated the draft with the proposed text. Best, Thomas On 16.06.2014 14:35, Brian Haberman wrote: > You could always borrow legacy text from RFC 791... > > "Internet Header Length is the length of the internet header in 32 bit > words" > > Regards, > Brian > > On 6/16/14 6:25 AM, Thomas C. Schmidt wrote: >> Hi Dirk, >> >> many thanks for you continued effort! >> >> Making the bit counting more apparent, should not be a problem. I agree >> that this is a somewhat uncommon way of counting, but prevents us from >> changing the encoding structure of the mobility options, which I believe >> is the more relevant part. >> >> What is your opinion, Stig? >> >> Best regards, >> >> Thomas >> >> On 16.06.2014 12:00, Dirk.von-Hugo@telekom.de wrote: >>> Hi all, >>> I also had a look at the latest version -06 and it seems for me to be >>> ok now. >>> The only minor concern might be whether the expression "length in four >>> octets" is familiar enough (I didn't find this in any other draft) or >>> should be mentioned especially in terms of a warning "caution!" or >>> explicit (e.g. "i.e. 32 bit") or similar? >>> Otherwise I am fine with it ... >>> Thanks! >>> Best regards >>> Dirk >>> >>> -----Original Message----- >>> From: Stig Venaas [mailto:stig@venaas.com] >>> Sent: Donnerstag, 29. Mai 2014 00:28 >>> To: Thomas C. Schmidt; von Hugo, Dirk; multimob@ietf.org >>> Subject: Re: [multimob] Working group last call for >>> draft-ietf-multimob-fmipv6-pfmipv6-multicast-05 >>> >>> Hi >>> >>> On 5/22/2014 4:29 AM, Thomas C. Schmidt wrote: >>>> Hi Stig, Dirk, >>>> >>>> we just updated the document - sorry for me being slow. >>>> >>>> We have fixed all nits that you pointed at. >>>> >>>> In particular, the length counter issue should be resolved now: As >>>> this inherited 8 bit length counter is not long enough to count bytes >>>> of MLD state records, we propose to count four octets. This complies >>>> to the alignment and should not be a problem. However, it leads to a >>>> feasible number of MLD records in the payload which at least comes >>>> close to common packet lengths. >>> >>> Thanks. I'll have a look at this shortly. Great if others can help >>> verify that this change is OK as well. >>> >>> Stig >>> >>>> Best, >>>> >>>> Thomas >>>> >>>> >>>> On 19.05.2014 22:00, Stig Venaas wrote: >>>>> Hi >>>>> >>>>> On 4/22/2014 11:13 AM, Thomas C. Schmidt wrote: >>>>>> Hi Stig, >>>>>> >>>>>> sorry, we've been busy otherwise. >>>>>> >>>>>> We'll try to update asap. >>>>> >>>>> How is this going? Looks like we're still waiting. >>>>> >>>>> Stig >>>>> >>>>>> Cheers, >>>>>> >>>>>> Thomas >>>>>> >>>>>> On 22.04.2014 19:29, Stig Venaas wrote: >>>>>>> Thomas/authors, I think we're just waiting for 06 with these minor >>>>>>> changes and we can request publication. >>>>>>> >>>>>>> Stig >>>>>>> >>>>>>> On 4/3/2014 2:15 PM, Stig Venaas wrote: >>>>>>>> Hi >>>>>>>> >>>>>>>> On 3/31/2014 2:57 PM, Thomas C. Schmidt wrote: >>>>>>>>> Hi Dirk, >>>>>>>>> >>>>>>>>> many thanks for carefully looking through the draft. Please see >>>>>>>>> comments inline. >>>>>>>>> >>>>>>>>> On 27.03.2014 16:30, Dirk.von-Hugo@telekom.de wrote: >>>>>>>>> >>>>>>>>>> Sorry that I missed the preceding WGLC - I do think that this >>>>>>>>>> document is ready for publication. It has greatly improved since >>>>>>>>>> version 00 >>>>>>>>>> ;-) >>>>>>>>>> >>>>>>>>>> Though some (minor) nits came to my mind after re-reading: >>>>>>>>>> >>>>>>>>>> p.1. >>>>>>>>>> Updates: 5568 (if approved) => shouldn't be added 5949 since it >>>>>>>>>> does also update PFMIPv6? >>>>>>>>>> >>>>>>>>> >>>>>>>>> I don't think so. The update of 5568 is with the PrRtAdv-Messages. >>>>>>>>> 5949 >>>>>>>>> does not contain such things, as there is no explicit messaging >>>>>>>>> between MAGs and the MN. Mobility Options are explicitly under >>>>>>>>> the control of IANA. >>>>>>>>> >>>>>>>>>> As mentioned by others for prior versions there is still mixed >>>>>>>>>> usage of FBack, Hack, ... and FBACK, HACK, ... >>>>>>>>>> Same for PMAG/NMAG and pMAG/nMAG. >>>>>>>>>> >>>>>>>>> >>>>>>>>> Oh yes, that was in the figures ... >>>>>>>>> >>>>>>>>>> p.10ff >>>>>>>>>> "Section 3.3. Protocol Operations Specific to PFMIPv6" and Figs. >>>>>>>>>> 4/5 >>>>>>>>>> do include "PMAG (PAR)" and "NMAG (NAR)" - isn't it all about >>>>>>>>>> PMIP - so no relevance for AR? Otherwise I would expect a >>>>>>>>>> statement like that also a mixed scenario MIP/PMIP is in focus >>>>>>>>>> here ... >>>>>>>>>> I tried to find out whether this was explained in prior posts >>>>>>>>>> but didn't catch any ... sorry if I missed it! >>>>>>>>>> >>>>>>>>> >>>>>>>>> Actually the terms PAR and NAR in parenthesis are used to >>>>>>>>> indicate the correspondence with FMIP ... it does not consider >>>>>>>>> mixed terms, but should help the reader to see that this is all >>>>>>>>> about the same "abstract entities" here. >>>>>>>>> >>>>>>>>>> p.15 >>>>>>>>>> sect. 4.1.3 is on NAR, so I guess: >>>>>>>>>> of the PAR => of the NAR >>>>>>>>>> >>>>>>>>> >>>>>>>>> Yes, thanks. >>>>>>>>> >>>>>>>>>> the NAR joins the groups subscribed >>>>>>>>>> for forwarding on the tunnel link. < sounds puzzling to me >>>>>>>>>> => the NAR joins the groups the MN has subscribed >>>>>>>>>> for (which are then forwarded by PAR) via the tunnel link. < >>>>>>>>>> is it that what is meant? >>>>>>>>>> >>>>>>>>> >>>>>>>>> Yes, thanks. This is better. >>>>>>>>> >>>>>>>>>> p.21 >>>>>>>>>> number of muticast records => number of multicast records >>>>>>>>>> >>>>>>>>> >>>>>>>>> Thanks, fixed. >>>>>>>>> >>>>>>>>>> or Section 4.2 of [RFC3376]) for the => or Section 4.2 of >>>>>>>>>> [RFC3376] for the >>>>>>>>>> >>>>>>>>> >>>>>>>>> Thanks, fixed. >>>>>>>>> >>>>>>>>>> p.23 >>>>>>>>>> 5.5. Length Considerations: Number of Records and Addresses I >>>>>>>>>> understand why the maximum number of multicast address records >>>>>>>>>> is 72 or sources for MLDv2 is 89 (also given in >>>>>>>>>> http://tools.ietf.org/html/rfc3810#section-5.1.10), but I miss a >>>>>>>>>> consideration of specific limitation due to 8-bit Length format >>>>>>>>>> in new Mobility Header Multicast Option (Fig.7). >>>>>>>>>> Have I misunderstood something or isn't there a much stricter >>>>>>>>>> limit for multicast address records to (512-2-4)/(4+16) < 26 >>>>>>>>>> (w/o source >>>>>>>>>> addresses) ?? >>>>>>>>>> >>>>>>>>> >>>>>>>>> I guess you hit a point: By bringing back length formatting to >>>>>>>>> standard mobility options recently, we missed that this will not >>>>>>>>> fill an Ethernet packet. I don't think this matters much, but we >>>>>>>>> definitely should adjust the section on length considerations. >>>>>>>>> >>>>>>>>>> for that multicast address to their MLDv2 (IGMPv2) equivalents >>>>>>>>>> => for that multicast address to their MLDv2 (IGMPv3) >>>>>>>>>> equivalents >>>>>>>>>> >>>>>>>>> >>>>>>>>> Thanks, fixed. >>>>>>>>> >>>>>>>>>> Hope this helps >>>>>>>>> >>>>>>>>> Yes, it definitely does. >>>>>>>>> >>>>>>>>> We will wait for the next days to pass the call deadline and >>>>>>>>> resubmit then. >>>>>>>> >>>>>>>> Thanks. Looks like these are the only outstanding issues. Thanks >>>>>>>> for having a careful look Dirk. >>>>>>>> >>>>>>>> Once you submit the new version I'll allow a couple of days for >>>>>>>> myself and others to review changes. If they look good I'll >>>>>>>> request publishing. >>>>>>>> >>>>>>>> If others have any issues, please let us know, even if passed the >>>>>>>> WGLC deadline. >>>>>>>> >>>>>>>> Stig >>>>>>>> >>>>>>>>> Thanks again & best regards, >>>>>>>>> >>>>>>>>> Thomas >>>>>>>>> >>>>>>>>> >>>>>>>>>> -----Original Message----- >>>>>>>>>> From: multimob [mailto:multimob-bounces@ietf.org] On Behalf Of >>>>>>>>>> Stig Venaas >>>>>>>>>> Sent: Montag, 24. März 2014 21:30 >>>>>>>>>> To: multimob@ietf.org >>>>>>>>>> Subject: [multimob] Working group last call for >>>>>>>>>> draft-ietf-multimob-fmipv6-pfmipv6-multicast-05 >>>>>>>>>> >>>>>>>>>> This is a working group last call for >>>>>>>>>> draft-ietf-multimob-fmipv6-pfmipv6-multicast-05 >>>>>>>>>> >>>>>>>>>> Please state whether you think it is ready for publishing or if >>>>>>>>>> you believe there are issues with the document or that it is not >>>>>>>>>> ready for other reasons. >>>>>>>>>> >>>>>>>>>> The document has already been reviewed by several people, but it >>>>>>>>>> is still good to hear from the working group what you think. >>>>>>>>>> >>>>>>>>>> The last call ends one week from now on Monday March 31st. >>>>>>>>>> >>>>>>>>>> The draft is available at >>>>>>>>>> http://tools.ietf.org/html/draft-ietf-multimob-fmipv6-pfmipv6-mu >>>>>>>>>> lticast-05 >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> Stig >>>>>>>>>> >>>>>>>>>> _______________________________________________ >>>>>>>>>> multimob mailing list >>>>>>>>>> multimob@ietf.org >>>>>>>>>> https://www.ietf.org/mailman/listinfo/multimob >>>>>>>>>> >>>>>>>>>> _______________________________________________ >>>>>>>>>> multimob mailing list >>>>>>>>>> multimob@ietf.org >>>>>>>>>> https://www.ietf.org/mailman/listinfo/multimob >>>>>>>>>> >>>>>>>>> >>>>>>>> >>>>>>> >>>>>> >>>>> >>>> >>> >>> _______________________________________________ >>> multimob mailing list >>> multimob@ietf.org >>> https://www.ietf.org/mailman/listinfo/multimob >>> >> > > > > _______________________________________________ > multimob mailing list > multimob@ietf.org > https://www.ietf.org/mailman/listinfo/multimob > -- Prof. Dr. Thomas C. Schmidt ° Hamburg University of Applied Sciences Berliner Tor 7 ° ° Dept. Informatik, Internet Technologies Group 20099 Hamburg, Germany ° ° http://www.haw-hamburg.de/inet Fon: +49-40-42875-8452 ° ° http://www.informatik.haw-hamburg.de/~schmidt Fax: +49-40-42875-8409 °
- [multimob] Working group last call for draft-ietf… Stig Venaas
- Re: [multimob] Working group last call for draft-… Dirk.von-Hugo
- Re: [multimob] Working group last call for draft-… Thomas C. Schmidt
- Re: [multimob] Working group last call for draft-… Stig Venaas
- Re: [multimob] Working group last call for draft-… Stig Venaas
- Re: [multimob] Working group last call for draft-… Thomas C. Schmidt
- Re: [multimob] Working group last call for draft-… Stig Venaas
- Re: [multimob] Working group last call for draft-… Thomas C. Schmidt
- Re: [multimob] Working group last call for draft-… Stig Venaas
- Re: [multimob] Working group last call for draft-… Dirk.von-Hugo
- Re: [multimob] Working group last call for draft-… Thomas C. Schmidt
- Re: [multimob] Working group last call for draft-… Brian Haberman
- Re: [multimob] Working group last call for draft-… Stig Venaas
- Re: [multimob] Working group last call for draft-… Thomas C. Schmidt
- Re: [multimob] Working group last call for draft-… Stig Venaas
- Re: [multimob] Working group last call for draft-… Stig Venaas