Re: [Teas] New Slicing revision: I-D Action: draft-ietf-teas-ietf-network-slices-01.txt
Daniele Ceccarelli <daniele.ceccarelli@ericsson.com> Mon, 19 April 2021 09:14 UTC
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From: Daniele Ceccarelli <daniele.ceccarelli@ericsson.com>
To: "adrian@olddog.co.uk" <adrian@olddog.co.uk>, "teas@ietf.org" <teas@ietf.org>
Thread-Topic: [Teas] New Slicing revision: I-D Action: draft-ietf-teas-ietf-network-slices-01.txt
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Date: Mon, 19 Apr 2021 09:14:09 +0000
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Archived-At: <https://mailarchive.ietf.org/arch/msg/teas/t23jfQMMW-da3e-8l0o6NhIEre0>
Subject: Re: [Teas] New Slicing revision: I-D Action: draft-ietf-teas-ietf-network-slices-01.txt
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Hi Adrian, Completely agree. Please see in line for some more comments. BR Daniele > -----Original Message----- > From: Adrian Farrel <adrian@olddog.co.uk> > Sent: den 16 april 2021 21:06 > To: Daniele Ceccarelli <daniele.ceccarelli@ericsson.com>; teas@ietf.org > Subject: RE: [Teas] New Slicing revision: I-D Action: draft-ietf-teas-ietf-network- > slices-01.txt > > Hi Daniele, > > > Regarding the discussion on realization. > > > > Maybe we could have section 6 split into an analysis of existing > > tools, > something like: > > > > 6. Applicability of existing IETF tools to IETF Network Slices > > 6.1 ACTN > > 6.2 Enhanced VPN > > 6.3 draft-bestbar > > Yes, that's the split I am seeing (although may need a better name for 6.3). [DC] yes definitely. Maybe something like: "Network slicing and slice aggregates in IP/MPLS networks" > > However, I don't envision much text in each section. IMHO, this document is not > the place to expound in detail on the realisation possibilities. Once we have > established the key architectural points in this document, people can write other > documents (applicability statements) to explain how their favourite approach > can be applied to satisfy the architecture. [DC] Makes sense. It's not the scope of the framework to define solutions. An hook to existing work is more than enough. Maybe solution drafts might go into a more detailed analysis of how each solution can meet the requirements. > > > (I still believe the VTN can be a particular type of VN...but this is > another story) > > That is a discussion that is really worth continuing, but I think it is outside the > scope of this document. > > > Willing to be more creative we could split them into data plane, and > control/management > > plane? > > I wonder whether this should find its way into... > 5.5. Realizing IETF Network Slice . . . . . . . . . . . . . . 20 > 5.5.1. Underlying Technology . . . . . . . . . . . . . . . . 20 > [DC] yes, that's a valuable option. Even if as you said above it would be just an reference. > Cheers, > Adrian > > -----Original Message----- > From: Teas <teas-bounces@ietf.org> On Behalf Of Adrian Farrel > Sent: den 16 april 2021 12:39 > To: teas@ietf.org > Cc: adrian@olddog.co.uk > Subject: [Teas] New Slicing revision: I-D Action: > draft-ietf-teas-ietf-network-slices-01.txt > > Hi, > > In this revision, I have tidied the text. That involved: > - Fixing inconsistent editorial standards between the source documents > - Some more minor editorials > - Moving a couple of sections around > - Collapsing a little duplication arising from pulling text from two places > - Removing cross-references between the source documents > - Removing the tagging of the source material > > In doing so, there were two small paragraphs that didn't seem to belong. > These can be seen in the Appendix. > > ACTION: All: Please shout if you believe this text should not be deleted. > > While this document is now in a condition that can be reviewed and commented > on, I propose to make some suggestions to reduce and consolidate the text. I > will bring these to the list as separate threads (some have already been seen on > the list, but we should make the proposed changes clear). They will > cover: > > - Discussion of realisation. > This should be a discussion of architectural realisation, not of underlying > technologies. > Currently we have: > - a large section on ACTN > - a couple of references to VPN+ > - no mention of the architecture underlying draft-bestbar-teas-yang-slice- > policy > I already suggested (on list) a way to reduce the ACTN text, but it has since > been > proposed to me that all discussion of realisation of the architecture can be best > achieved with brief paragraphs and references. I will propose text. > > - Isolation and "unmeasurable SLOs" > This has long been a contentious topic. I think we had reached a bit of a > compromise > in the definitions draft, but doing the merge has caused me to re-read it and I > am > uneasy. I will be making a text suggestion to clarify the purpose and meaning of > the > section on isolation, and that will depend on us also clarifying the description > of > "directly measurable SLOs" and "indirectly measurable SLOs. > > - Revisiting the definition of a network slice > This is obviously pretty core to our work! John Drake previously sent a > suggestion to > the list (2021-04-03). This caused a bit of discussion and raises a number of > points. > I plan to try to tease out the various points to see whether we can agree them > Separately and then come up with new definitions text. This may be a good > topic > For our first telechat on the document. > > ACTION: Chairs: Decide what the rules are for having telechat meetings for this > document. > > Thanks, > Adrian > > -----Original Message----- > From: I-D-Announce <i-d-announce-bounces@ietf.org> On Behalf Of internet- > drafts@ietf.org > Sent: 16 April 2021 11:19 > To: i-d-announce@ietf.org > Cc: teas@ietf.org > Subject: I-D Action: draft-ietf-teas-ietf-network-slices-01.txt > > > 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 : Framework for IETF Network Slices > Authors : Adrian Farrel > Eric Gray > John Drake > Reza Rokui > Shunsuke Homma > Kiran Makhijani > Luis M. Contreras > Jeff Tantsura > Filename : draft-ietf-teas-ietf-network-slices-01.txt > Pages : 33 > Date : 2021-04-16 > > Abstract: > This document describes network slicing in the context of networks > built from IETF technologies. It defines the term "IETF Network > Slice" and establishes the general principles of network slicing in > the IETF context. > > The document discusses the general framework for requesting and > operating IETF Network Slices, the characteristics of an IETF Network > Slice, the necessary system components and interfaces, and how > abstract requests can be mapped to more specific technologies. The > document also discusses related considerations with monitoring and > security. > > This document also provides definitions of related terms to enable > consistent usage in other IETF documents that describe or use aspects > of IETF Network Slices. > > > The IETF datatracker status page for this draft is: > https://datatracker.ietf.org/doc/draft-ietf-teas-ietf-network-slices/ > > There are also htmlized versions available at: > https://tools.ietf.org/html/draft-ietf-teas-ietf-network-slices-01 > https://datatracker.ietf.org/doc/html/draft-ietf-teas-ietf-network-slices-01 > > A diff from the previous version is available at: > https://www.ietf.org/rfcdiff?url2=draft-ietf-teas-ietf-network-slices-01 > > > Please note that it may take a couple of minutes from the time of submission > until the htmlized version and diff are available at tools.ietf.org. > > Internet-Drafts are also available by anonymous FTP at: > ftp://ftp.ietf.org/internet-drafts/ > > > _______________________________________________ > I-D-Announce mailing list > I-D-Announce@ietf.org > https://www.ietf.org/mailman/listinfo/i-d-announce > Internet-Draft directories: http://www.ietf.org/shadow.html or > ftp://ftp.ietf.org/ietf/1shadow-sites.txt > > _______________________________________________ > Teas mailing list > Teas@ietf.org > https://www.ietf.org/mailman/listinfo/teas
- [Teas] New Slicing revision: I-D Action: draft-ie… Adrian Farrel
- Re: [Teas] New Slicing revision: I-D Action: draf… Daniele Ceccarelli
- Re: [Teas] New Slicing revision: I-D Action: draf… Adrian Farrel
- Re: [Teas] New Slicing revision: I-D Action: draf… Daniele Ceccarelli
- Re: [Teas] New Slicing revision: I-D Action: draf… Uma Chunduri
- Re: [Teas] New Slicing revision: I-D Action: draf… Adrian Farrel
- Re: [Teas] New Slicing revision: I-D Action: draf… Uma Chunduri
- Re: [Teas] New Slicing revision: I-D Action: draf… Dongjie (Jimmy)