Re: [Teas] I-D Action: draft-ietf-teas-ietf-network-slice-definition-01.txt

mohamed.boucadair@orange.com Tue, 23 February 2021 08:14 UTC

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From: <mohamed.boucadair@orange.com>
To: Joel Halpern Direct <jmh.direct@joelhalpern.com>, "Rokui, Reza (Nokia - CA/Ottawa)" <reza.rokui@nokia.com>, Kiran Makhijani <kiranm@futurewei.com>, "teas@ietf.org" <teas@ietf.org>
Thread-Topic: [Teas] I-D Action: draft-ietf-teas-ietf-network-slice-definition-01.txt
Thread-Index: AQHXCUWuMe84hfFn80S/AASak54lnaplZHTA
Date: Tue, 23 Feb 2021 08:14:24 +0000
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Subject: Re: [Teas] I-D Action: draft-ietf-teas-ietf-network-slice-definition-01.txt
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Hi all, 

I also echo the concerns raised by Joel, modulo that I think that not only the PE view should be visible, but also the CE and the CE-PE circuit.

Cheers,
Med

> -----Message d'origine-----
> De : Teas [mailto:teas-bounces@ietf.org] De la part de Joel Halpern
> Direct
> Envoyé : lundi 22 février 2021 19:08
> À : Rokui, Reza (Nokia - CA/Ottawa) <reza.rokui@nokia.com>om>; Kiran
> Makhijani <kiranm@futurewei.com>om>; teas@ietf.org
> Objet : Re: [Teas] I-D Action: draft-ietf-teas-ietf-network-slice-
> definition-01.txt
> 
> We are in the middle of an ongoing discussion (on the WG email list)
> about what things need names and what they should be named.  The
> document authors decided instead to add elaboration on the term
> endpoint, including claiming that the external endpoints are the
> ingress / egress.
> 
> It is probably not worth insisting that the changes be rolled back.
> But I do not consider the discussion resolved, nor do I consider that
> the wording in the document has WG agreement.
> 
> Personally, I would focus on the actual edge of the IETF Network
> Slice, and focus on naming those points.  ingress / egress or PE seem
> viable terms.  Then we could discuss whether the IETF Network Slice
> (or its
> controller) cares about the external edges, and if so to what degree
> it cares.
> 
> Yours,
> Joel
> 
> On 2/22/2021 1:04 PM, Rokui, Reza (Nokia - CA/Ottawa) wrote:
> > Joel,
> >
> > Please be specific on your concerns. Note that since IETF network
> slice endpoints are technology-agnostics, the current definition
> draft just defines them. We on purpose did not go through any aspects
> of IETF network slice realization.
> >
> > The mapping between IETF technology-specific and NSE (as per Adrian
> see Figure 2. of RFC3985) is given in following draft  (see section
> 6.3 IETF Network Slice Endpoint (NSE)):
> >
> > https://www.ietf.org/archive/id/draft-wd-teas-ietf-network-slice-
> nbi-y
> > ang-02.txt
> >
> > Reza
> >
> > ----------------------------------------------------------
> >
> > On 2021-02-22, 12:54 PM, "Teas on behalf of Joel M. Halpern" <teas-
> bounces@ietf.org on behalf of jmh@joelhalpern.com> wrote:
> >
> >      The conflating of the external entity (what the diagram calls
> endpoint)
> >      with the ingress / egress is simply confusing and does not
> match the
> >      usage the IETF generally uses for those terms.
> >
> >      There are other aspects of this as well, but getting agreement
> on what
> >      we want to name, and what their names are, in ways that are
> consistent
> >      with general IETF usage, will make it simpler to discuss the
> other issues.
> >
> >      Yours,
> >      Joel
> >
> >      On 2/22/2021 12:43 PM, Kiran Makhijani wrote:
> >      > Very fair point,
> >      >
> >      > We had finished revising the text late Friday and rushed to
> post due to
> >      > the submission deadline. It did not occur to first post it
> on the list (
> >      > we should have).
> >      >
> >      > Regardless, please let us know your concerns.
> >      >
> >      > Cheers,
> >      >
> >      > Kiran
> >      >
> >      > *From: *Teas <teas-bounces@ietf.org> on behalf of Joel M.
> Halpern
> >      > <jmh@joelhalpern.com>
> >      > *Date: *Monday, February 22, 2021 at 09:31
> >      > *To: *teas@ietf.org <teas@ietf.org>
> >      > *Subject: *Re: [Teas] I-D Action:
> >      > draft-ietf-teas-ietf-network-slice-definition-01.txt
> >      >
> >      > The effort to address the discussion about the term
> "endpoint" seems to
> >      > have made things worse, not better.  I would have expected
> the changes
> >      > to be deferred until we had WG rough consensus on what the
> changes
> >      > should look like.
> >      >
> >      > Yours,
> >      > Joel
> >      >
> >      > On 2/22/2021 11:21 AM, internet-drafts@ietf.org wrote:
> >      >  >
> >      >  > A New Internet-Draft is available from the on-line
> Internet-Drafts
> >      > directories.
> >      >  > This draft is a work item of the Traffic Engineering
> Architecture and
> >      > Signaling WG of the IETF.
> >      >  >
> >      >  >          Title           : Definition of IETF Network
> Slices
> >      >  >          Authors         : Reza Rokui
> >      >  >                            Shunsuke Homma
> >      >  >                            Kiran Makhijani
> >      >  >                            Luis M. Contreras
> >      >  >                            Jeff Tantsura
> >      >  >        Filename        :
> >      > draft-ietf-teas-ietf-network-slice-definition-01.txt
> >      >  >        Pages           : 17
> >      >  >        Date            : 2021-02-22
> >      >  >
> >      >  > Abstract:
> >      >  >     This document provides a definition of the term "IETF
> Network Slice"
> >      >  >     for use within the IETF and specifically as a
> reference for other
> >      >  >     IETF documents that describe or use aspects of
> network slices.
> >      >  >
> >      >  >     The document also describes the characteristics of an
> IETF network
> >      >  >     slice, related terms and their meanings, and explains
> how IETF
> >      >  >     network slices can be used in combination with end-
> to-end network
> >      >  >     slices or independent of them.
> >      >  >
> >      >  >
> >      >  > The IETF datatracker status page for this draft is:
> >      >  >
> >      >
> https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fdat
> atracker.ietf.org%2Fdoc%2Fdraft-ietf-teas-ietf-network-slice-
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> >      >  >
> >      >  > A diff from the previous version is available at:
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> >      >
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