Re: [Teas] CE-based Network Slice RE: network Slice Endpoint in draft-ietf-teas-ietf-network-slice-definition-00
Joel Halpern Direct <jmh.direct@joelhalpern.com> Thu, 04 March 2021 13:02 UTC
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To: mohamed.boucadair@orange.com
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From: Joel Halpern Direct <jmh.direct@joelhalpern.com>
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Subject: Re: [Teas] CE-based Network Slice RE: network Slice Endpoint in draft-ietf-teas-ietf-network-slice-definition-00
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That works for me. Thanks Med. Joel On 3/4/2021 6:05 AM, mohamed.boucadair@orange.com wrote: > Re-, > > I think here where we need to invoke the new term proposed by John/Eric: IETF Network Slice Service. > > The IETF Network Slice Service is always between CEs. > > Other than the managed CE case, the scope of the IETF Network Slice is what Joel said with an emphasis on the adequate configuration of the access circuit. > > Cheers, > Med > >> -----Message d'origine----- >> De : Joel M. Halpern [mailto:jmh@joelhalpern.com] >> Envoyé : jeudi 4 mars 2021 01:42 >> À : Shunsuke Homma <s.homma0718@gmail.com>; BOUCADAIR Mohamed TGI/OLN >> <mohamed.boucadair@orange.com> >> Cc : teas@ietf.org >> Objet : Re: [Teas] CE-based Network Slice RE: network Slice Endpoint >> in draft-ietf-teas-ietf-network-slice-definition-00 >> >> I can't speak for Med, but in my opinion, the right scope for the >> IETF Network Slice is PE to PE. Information about the access circuit >> will need to be provided, but it is not, as I understand it,under the >> control of the IETF Network Slice Controller. >> >> Yours, >> Joel >> >> On 3/3/2021 7:25 PM, Shunsuke Homma wrote: >>> Hi Med, >>> >>> I think it's an important discussion. I'd like to clarify the range >>> which should be managed as an IETF network slice. In my >> understanding, >>> CE will be a slice consumer's end-host or an endpoint of an >> opposite >>> network slice, and it will be generally out of control of IETF >> network >>> slice. As you described, there may be cases where CE makes marking >> on >>> traffic and PE allocate it to appropriate slice based on the mark, >> but >>> I think the arrangement between CE and PE will be done by >>> controller/orchestrator higher than IETF Network Slice Controller. >> In >>> other words, a necessary policy is set to PE from higher >>> controller/orchestrator, and IETF network slice can work >> independently >>> of whether the CE is slice-aware or not. >>> >>> So my question is which is appropriate as the range of IETF network >> slice. >>> >>> 1. it is always between CE and CE, >>> 2. it is always between PE and PE, >>> 3. it is basically from PE to PE, and sometimes between CE and CE >>> (e.g., in case that CE is slice-aware,) >>> >>> # From a network operator or slice provider aspect, I'd like to >> know >>> whether SLA/SLO between CE and PE must be assured. >>> >>> Regards, >>> >>> Shunsuke >>> >>> 2021年3月3日(水) 22:57 <mohamed.boucadair@orange.com >>> <mailto:mohamed.boucadair@orange.com>>: >>> >>> Re-,____ >>> >>> __ __ >>> >>> Thanks Adrian for raising this point.____ >>> >>> __ __ >>> >>> My take is that we can’t discard it by design. Take the example >> of >>> stitched slices where packets are marked by the CE + that >> marking is >>> trusted by the PE to graft them to the appropriate network >> slice. >>> Likewise, a hierarchical design where an aggregate slice trusts >> the >>> marking of the upper slice to identify how to map between the >>> levels. Such trust may be justified under specific deployment >>> contexts. ____ >>> >>> __ __ >>> >>> Cheers,____ >>> >>> Med____ >>> >>> __ __ >>> >>> *De :* Teas [mailto:teas-bounces@ietf.org >>> <mailto:teas-bounces@ietf.org>] *De la part de* Adrian Farrel >>> *Envoyé :* jeudi 25 février 2021 11:52 >>> *À :* 'Young Lee' <younglee.tx@gmail.com >>> <mailto:younglee.tx@gmail.com>>; 'Luis M. Contreras' >>> <contreras.ietf@gmail.com <mailto:contreras.ietf@gmail.com>> >>> *Cc :* 'Joel M. Halpern' <jmh@joelhalpern.com >>> <mailto:jmh@joelhalpern.com>>; teas@ietf.org >> <mailto:teas@ietf.org>; >>> 'Eric Gray' <ewgray2k@gmail.com <mailto:ewgray2k@gmail.com>>; >> 'John >>> E Drake' <jdrake=40juniper.net@dmarc.ietf.org >>> <mailto:40juniper.net@dmarc.ietf.org>>; 'Rokui, Reza (Nokia - >>> CA/Ottawa)' <reza.rokui@nokia.com >> <mailto:reza.rokui@nokia.com>>; >>> BOUCADAIR Mohamed TGI/OLN <mohamed.boucadair@orange.com >>> <mailto:mohamed.boucadair@orange.com>> >>> *Objet :* Re: [Teas] network Slice Endpoint in >>> draft-ietf-teas-ietf-network-slice-definition-00____ >>> >>> __ __ >>> >>> __ __ >>> >>> [...] ____ >>> >>> ...but we have to ask ourselves carefully whether we **really** >> want >>> the CE-based approach in our network slicing:____ >>> >>> __-__What are the considerations for how much knowledge of the >>> underlay network has to be shared to the CE?____ >>> >>> __-__What are the considerations for how an underlay >> distinguishes >>> CE-originated slicing traffic?____ >>> >>> These are pretty much the same questions that CE-based VPNs >> have to >>> answer. Of course, the concept of a “provider-managed CE” >> muddies >>> these waters somewhat.____ >>> >>> __ __ >>> >>> Conversely, the port-based PE-based VPN has none of these >> problems, >>> but does have to agree on the “Access Connection” encoding, and >> that >>> is either payload-sensitive (like in PWE3) or technology-aware >> (like >>> in L3VPN).____ >>> >>> __ __ >>> >>> [...] ____ >>> >>> __ __ >>> >>> >>> >> _____________________________________________________________________ >> _ >>> ___________________________________________________ >>> >>> Ce message et ses pieces jointes peuvent contenir des >> informations confidentielles ou privilegiees et ne doivent donc >>> pas etre diffuses, exploites ou copies sans autorisation. Si >> vous avez recu ce message par erreur, veuillez le signaler >>> a l'expediteur et le detruire ainsi que les pieces jointes. Les >> messages electroniques etant susceptibles d'alteration, >>> Orange decline toute responsabilite si ce message a ete altere, >> deforme ou falsifie. Merci. >>> >>> This message and its attachments may contain confidential or >> privileged information that may be protected by law; >>> they should not be distributed, used or copied without >> authorisation. >>> If you have received this email in error, please notify the >> sender and delete this message and its attachments. >>> As emails may be altered, Orange is not liable for messages >> that have been modified, changed or falsified. >>> Thank you. >>> >>> _______________________________________________ >>> Teas mailing list >>> Teas@ietf.org <mailto:Teas@ietf.org> >>> https://www.ietf.org/mailman/listinfo/teas >>> <https://www.ietf.org/mailman/listinfo/teas> >>> >>> >>> _______________________________________________ >>> Teas mailing list >>> Teas@ietf.org >>> https://www.ietf.org/mailman/listinfo/teas >>> > > _________________________________________________________________________________________________________________________ > > Ce message et ses pieces jointes peuvent contenir des informations confidentielles ou privilegiees et ne doivent donc > pas etre diffuses, exploites ou copies sans autorisation. Si vous avez recu ce message par erreur, veuillez le signaler > a l'expediteur et le detruire ainsi que les pieces jointes. Les messages electroniques etant susceptibles d'alteration, > Orange decline toute responsabilite si ce message a ete altere, deforme ou falsifie. Merci. > > This message and its attachments may contain confidential or privileged information that may be protected by law; > they should not be distributed, used or copied without authorisation. > If you have received this email in error, please notify the sender and delete this message and its attachments. > As emails may be altered, Orange is not liable for messages that have been modified, changed or falsified. > Thank you. > > _______________________________________________ > Teas mailing list > Teas@ietf.org > https://www.ietf.org/mailman/listinfo/teas >
- [Teas] CE-based Network Slice RE: network Slice E… mohamed.boucadair
- Re: [Teas] CE-based Network Slice RE: network Sli… Shunsuke Homma
- Re: [Teas] CE-based Network Slice RE: network Sli… Joel M. Halpern
- Re: [Teas] CE-based Network Slice RE: network Sli… mohamed.boucadair
- Re: [Teas] CE-based Network Slice RE: network Sli… mohamed.boucadair
- Re: [Teas] CE-based Network Slice RE: network Sli… Adrian Farrel
- Re: [Teas] CE-based Network Slice RE: network Sli… Joel Halpern Direct
- Re: [Teas] CE-based Network Slice RE: network Sli… Shunsuke Homma
- Re: [Teas] CE-based Network Slice RE: network Sli… LUIS MIGUEL CONTRERAS MURILLO
- Re: [Teas] CE-based Network Slice RE: network Sli… John E Drake
- Re: [Teas] CE-based Network Slice RE: network Sli… Ogaki, Kenichi
- Re: [Teas] CE-based Network Slice RE: network Sli… Ogaki, Kenichi
- Re: [Teas] CE-based Network Slice RE: network Sli… mohamed.boucadair
- Re: [Teas] CE-based Network Slice RE: network Sli… Shunsuke Homma
- Re: [Teas] CE-based Network Slice RE: network Sli… Kiran Makhijani
- Re: [Teas] CE-based Network Slice RE: network Sli… mohamed.boucadair
- Re: [Teas] CE-based Network Slice RE: network Sli… Shunsuke Homma