Re: [Teas-ns-dt] Figure in the ACTN Applicability section
Xufeng Liu <xufeng.liu.ietf@gmail.com> Thu, 14 May 2020 13:29 UTC
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From: Xufeng Liu <xufeng.liu.ietf@gmail.com>
Date: Thu, 14 May 2020 09:29:11 -0400
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To: "Luis M. Contreras" <contreras.ietf@gmail.com>
Cc: Eric Gray <eric.gray=40ericsson.com@dmarc.ietf.org>, "teas-ns-dt@ietf.org" <teas-ns-dt@ietf.org>
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Subject: Re: [Teas-ns-dt] Figure in the ACTN Applicability section
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Luis's diagram makes more sense to me. Some additional thoughts: 1) Transport Slice Controller (TSC) can be hierarchical, so we can have TSC-H and TSC-L, to match MDSC-H and MDSC-L. 2) The -02 version does not clearly define "A higher level system", which is needed. 3) It is needed to clearly describe which of these components are slice-aware and which are not. Thanks, - Xufeng On Tue, May 12, 2020 at 12:03 PM Luis M. Contreras <contreras.ietf@gmail.com> wrote: > (My apologies for the mail before, with the Confidential Notes by default. > Please, ignore it. Repeating mail here). > > Hi Eric, all, > > > > Thanks for addressing this point. > > > > I have some few comments and suggestions. > > > > 1/ Regarding the figure, I think that as it is now mix things a bit. In my > personal subjective view I think it provides a view of how to fit TSC into > ACTN rather in the other way around. My suggestion would be to depict the > comparison as in the figure below (ignore the service model naming by now > for this point). I think it becomes more clear, but again this is > subjective, of course. > > > > 2/ Regarding the service model naming. I have revisited RFC8309 and I > think that the proper mapping to service models in the case of TSC would be > the one proposed in the figure below on the left-hand side (please, check > Figure 3 in RFC8309). > > > > Here is the figure I propose. > > > > Service Model in ACTN > > Transport Slice Transport Slice Framework Terminology > > Framework [RFC8309] and Concepts > > ------------- ------------------------- ------------ > > +------------------------------------+ > > | Customer | | > > +------------------------------------+ > > Customer A | > > Service | > > Model V | > > +------------------------------------+ > > | A highter level system | | +-----+ > > |(e.g e2e network slice orchestrator)| ===> | CNC | > > +------------------------------------+ | +-----+ > > Service A A > > Delivery | TSC NBI | | CMI > > Model V V (LxSM) > > +------------------------------------+ | +-------+ > > | Transport Slice Controller | ===> | MDSC-H| > > +------------------------------------+ | +-------+ > > A A > > | | | > > | V > > Network | | +-------+ > > Configuration | TSC SBI |MDSC-L | > > Model | | +-------+ > > | A > > | | | MPI > > V V (LxNM) > > +------------------------------------+ | +-----+ > > | Network Controller(s) | ===> | PNC | > > +------------------------------------+ | +-----+ > > > > > > The text you propose depends totally on the final figure and the > consideration of the service models that apply, so I would prefer to > discuss first about the figure and once it is closed to discuss the text, > to ensure consistency. > > > > Thanks > > > > Luis > > El mar., 12 may. 2020 a las 16:03, Eric Gray (<eric.gray= > 40ericsson.com@dmarc.ietf.org>) escribió: > >> John and I had a discussion with Dhruv about some ambiguity in the >> relationship between some of the entities in the ACTN architecture and the >> related concepts in our NS-DT work in the Framework draft. >> >> >> >> The upshot is that there is a bit of a slushy relationship between some >> of the terms that we (the NS design team) have defined (see the definitions >> draft) and loosely corresponding concepts defined in ACTN. In particular, >> there are currently issues with the positioning of the TSC as directly >> analogous to MDSC, impacting interfaces between these logical components as >> well. >> >> >> >> After a few iterations in discussion, Dhruv, John and I agreed to propose >> a replacement figure and text as shown immediately below. >> >> >> >> +------------------------------------+ >> >> | Customer | | >> >> +------------------------------------+ >> >> A | ACTN >> >> | Terminology >> >> V | and Concepts >> >> +------------------------------------+ >> >> | A highter level system | | +-----+ >> >> |(e.g e2e network slice orchestrator)| ===> | CNC | >> >> +------------------------------------+ | +-----+ >> >> A A >> >> | TSC NBI | | CMI >> >> V V (LxSM) >> >> +------------------------------------+ | +-------+ >> >> | Transport Slice Controller | ===> | MDSC-H| >> >> +------------------------------------+ | +-------+ >> >> A A >> >> | TSC SBI (LxNM) | | >> >> V V >> >> +------------------------------------+ | +-------+ >> >> | Network Controller(s) | ===> |MDSC-L | >> >> +------------------------------------+ | +-------+ >> >> A >> >> Terminology/Concepts | | MPI >> >> Used in this Document V >> >> | +-----+ >> >> | PNC | >> >> | +-----+ >> >> >> >> >> >> We would also add further clarifying text along the lines of: >> >> >> >> The TS-NBI would be at the same level as the customer service models >> (LxSM), except that it uses a technology agnostic service model where as >> LxSM does not. >> >> >> >> We add hierarchy to the MDSC concept in this figure so that the mapping >> with LxNM might be easier to see. But the TSC could also directly interact >> with multiple domain controllers in which case we have a single MDSC. >> >> >> >> If nobody objects, or has additional input they would like to provide, we >> would like to go ahead and make this change to the Framework draft. >> >> >> >> If necessary, we can discuss this at the meeting on Thursday (14 May). >> >> >> >> -- >> >> Eric >> -- >> Teas-ns-dt mailing list >> Teas-ns-dt@ietf.org >> https://www.ietf.org/mailman/listinfo/teas-ns-dt >> > > > -- > ___________________________________________ > Luis M. Contreras > contreras.ietf@gmail.com > luismiguel.contrerasmurillo@telefonica.com > Global CTIO unit / Telefonica > -- > Teas-ns-dt mailing list > Teas-ns-dt@ietf.org > https://www.ietf.org/mailman/listinfo/teas-ns-dt >
- [Teas-ns-dt] Figure in the ACTN Applicability sec… Eric Gray
- Re: [Teas-ns-dt] Figure in the ACTN Applicability… LUIS MIGUEL CONTRERAS MURILLO
- Re: [Teas-ns-dt] Figure in the ACTN Applicability… Luis M. Contreras
- Re: [Teas-ns-dt] Figure in the ACTN Applicability… Zhenghaomian
- Re: [Teas-ns-dt] Figure in the ACTN Applicability… Dhruv Dhody
- Re: [Teas-ns-dt] Figure in the ACTN Applicability… Belotti, Sergio (Nokia - IT/Vimercate)
- Re: [Teas-ns-dt] Figure in the ACTN Applicability… Luis M. Contreras
- Re: [Teas-ns-dt] Figure in the ACTN Applicability… Belotti, Sergio (Nokia - IT/Vimercate)
- Re: [Teas-ns-dt] Figure in the ACTN Applicability… Luis M. Contreras
- Re: [Teas-ns-dt] Figure in the ACTN Applicability… Belotti, Sergio (Nokia - IT/Vimercate)
- Re: [Teas-ns-dt] Figure in the ACTN Applicability… Kiran Makhijani
- Re: [Teas-ns-dt] Figure in the ACTN Applicability… Xufeng Liu
- Re: [Teas-ns-dt] Figure in the ACTN Applicability… Eric Gray
- Re: [Teas-ns-dt] Figure in the ACTN Applicability… Dhruv Dhody
- Re: [Teas-ns-dt] Figure in the ACTN Applicability… John E Drake
- Re: [Teas-ns-dt] Figure in the ACTN Applicability… Eric Gray
- Re: [Teas-ns-dt] Figure in the ACTN Applicability… John E Drake
- Re: [Teas-ns-dt] Figure in the ACTN Applicability… Dhruv Dhody