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From: "qiangli (D)" <qiangli3@huawei.com>
To: "NetSlices@ietf.org" <NetSlices@ietf.org>
Thread-Topic: New Version Notification for draft-qiang-netslices-gap-analysis-01.txt
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Date: Mon, 3 Jul 2017 08:37:03 +0000
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Subject: [Netslices] New Version Notification for draft-qiang-netslices-gap-analysis-01.txt
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Dear All,



The 01 version of "Gap Analysis for Transport Network Slicing" draft has be=
en uploaded and is available on https://datatracker.ietf.org/doc/draft-qian=
g-netslices-gap-analysis/



Abstract:

   This document presents network slicing differentiation from the non-

   partition network or from simply partition of connectivity resources.

   It lists 7 standardization gaps related to 4 key requirements for

   network slicing in transport network.  It also presents an analysis

   of existing related work and other potential solutions on network

   slicing.

   This gap analysis document aims to provide a basis for future works

   in transport network slicing.



Comparing with 00 version, the main changes are:

1) added the word "Transport" to the title

2) 6 key requirements were reduced to 4 key requirements

3) 15 gaps were reduced to 7 gaps

4) refined some discussions and statements



Your comments and reviews are greatly appreciated.



Best regards,

Co-authors


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<p class=3D"MsoPlainText"><span lang=3D"EN-US">Dear All,<o:p></o:p></span><=
/p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">The 01 version of &quot;Gap =
Analysis for Transport Network Slicing&quot; draft has been uploaded and is=
 available on
<a href=3D"https://datatracker.ietf.org/doc/draft-qiang-netslices-gap-analy=
sis/">https://datatracker.ietf.org/doc/draft-qiang-netslices-gap-analysis/<=
/a><o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">Abstract:<o:p></o:p></span><=
/p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&nbsp;&nbsp; This document p=
resents network slicing differentiation from the non-<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&nbsp;&nbsp; partition netwo=
rk or from simply partition of connectivity resources.<o:p></o:p></span></p=
>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&nbsp;&nbsp; It lists 7 stan=
dardization gaps related to 4 key requirements for<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&nbsp;&nbsp; network slicing=
 in transport network.&nbsp; It also presents an analysis<o:p></o:p></span>=
</p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&nbsp;&nbsp; of existing rel=
ated work and other potential solutions on network<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&nbsp;&nbsp; slicing.<o:p></=
o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&nbsp;&nbsp; This gap analys=
is document aims to provide a basis for future works<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&nbsp;&nbsp; in transport ne=
twork slicing.<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">Comparing with 00 version, t=
he main changes are:<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">1) added the word &#8220;Tra=
nsport&#8221; to the title
<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">2) 6 key requirements were r=
educed to 4 key requirements<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">3) 15 gaps were reduced to 7=
 gaps<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">4) refined some discussions =
and statements<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">Your comments and reviews ar=
e greatly appreciated.<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">Best regards,<o:p></o:p></span>=
</p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">Co-authors<o:p></o:p></span></p=
>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
</div>
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Archived-At: <https://mailarchive.ietf.org/arch/msg/netslices/x4l5haky0fx0MmJg58hRpsf4E3I>
Subject: Re: [Netslices] New Version Notification for draft-galis-netslices-revised-problem-statement-01.txt
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X-List-Received-Date: Mon, 03 Jul 2017 12:12:00 -0000

3rd July 2017

Dear All

A new version of "Network Slicing - Revised Problem Statement=E2=80=9D =
draft has been uploaded and it is available at  =
https://www.ietf.org/internet-drafts/draft-galis-netslices-revised-problem=
-statement-01.txt


Name:		draft-galis-netslices-revised-problem-statement
Title:		Network Slicing - Revised Problem Statement
Document date:	2017-07-03
Group:		Individual Submission
Pages:		29
URL:            =
https://www.ietf.org/internet-drafts/draft-galis-netslices-revised-problem=
-statement-01.txt


Abstract:
  This document introduces Network Slicing problems and the motivation
  for new work areas. It represents an initial revision of the Network
  Slicing problem statement derived from the analysis of the technical
  gaps in IETF protocols ecosystem.  It complements and brings together
  the efforts being carried out in several other IETF working groups to
  achieve certain aspects of Network Slicing functions and operations.

Comparing with previous version the main changes are:

=E2=80=A2 a review of the problem priorities
=E2=80=A2 a summary focussing on selected higher priority problems and =
relationships with the gaps and requirements identifies in the related  =
I-Ds: draft-qiang-netslices-gap-analysis-01 and =
draft-netslices-usecases-01

Best Regards
Alex=


From nobody Mon Jul  3 08:43:44 2017
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From: "Kiran.Makhijani" <Kiran.Makhijani@huawei.com>
To: "netslices@ietf.org" <netslices@ietf.org>
Thread-Topic: New Version Notification for draft-netslices-usecases-01.txt
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Subject: [Netslices] New Version Notification for draft-netslices-usecases-01.txt
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From: "Flinck, Hannu (Nokia - FI/Espoo)" <hannu.flinck@nokia-bell-labs.com>
To: "netslices@ietf.org" <netslices@ietf.org>
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From: LUIS MIGUEL CONTRERAS MURILLO <luismiguel.contrerasmurillo@telefonica.com>
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Subject: Re: [Netslices] New Version Notification for draft-flinck-slicing-management-00.txt
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From nobody Tue Jul  4 21:28:20 2017
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Date: Wed, 5 Jul 2017 13:28:12 +0900
From: Pedro Martinez-Julia <pedro@nict.go.jp>
To: LUIS MIGUEL CONTRERAS MURILLO <luismiguel.contrerasmurillo@telefonica.com>
Cc: "Flinck, Hannu (Nokia - FI/Espoo)" <hannu.flinck@nokia-bell-labs.com>, "netslices@ietf.org" <netslices@ietf.org>
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Archived-At: <https://mailarchive.ietf.org/arch/msg/netslices/SYJDN00288mpy2eslDLTsCFxLnU>
Subject: Re: [Netslices] New Version Notification for draft-flinck-slicing-management-00.txt
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Dear Luis,

The "operator" perspective you are providing is really appreciated and
we will/should concentrate on point 3 for the "tenant perspective" and
the other points for the "operator perspective".

For the time being, I take this opportunity to ask you what an operator
is for you. In my mind I have the following roles (you can use different
names, but semantically are the same):

- Infrastructure Provider (InP): Owns the physical infrastructure and
  slices each physical element to get several virtual elements. For
  instance this /can/ be played by Telefonica, Orange, Vodafone, etc.

- Virtual Network Operator (VNO): Builds one or more slices of resources
  contacted to the InPs and then constructs a virtual network system on
  their top. For instance this /can/ be Yoigo, Simyo, etc.

- Application Service Provider (ASP): Contracts the virtual network
  system offered by a VNO, builds an application on top of it and offers
  it to users/customers. This can be played by Simyo (but not Yoigo).

Regarding the example organizations, all of them are clearly hybrid but
if we consider just a separate product/service we can classify them. For
instance, we can contract a set of physical links to Telefonica, a set
of access rights to Vodafone 4G service, and build a whole IP network
that a third party (ASP) can contract and then deploy an IMS solution to
offer call services to its customers.

In this sense, we have two clear points of standardization: The provider
needs a standard way to slice its physical resources so it is not tied
to any specific vendor or customer interface. The customer also needs a
standard way of managing (CRUD) their resource slices. The question in
relation to your comment would be whether it is better to address both
viewpoints together or separately.

Please give us your opinion and, please, try to associate it to some of
the roles I mention. Thank you very much.

Regards,
Pedro


On Wed, Jul 05, 2017 at 03:35:17AM +0000, LUIS MIGUEL CONTRERAS MURILLO wrote:
> Hi Hannu, all,
> 
> I have gone through the draft and some comments / doubts come to my mind.
> 
> .- The draft considers three different categories or kind of slices, depending on the level of control exposed to the tenant. These are basically:
> 1) the tenant just merely can use the slice provided
> 2) the tenant can change some configuration on the functions part of the slice
> 3) the tenant has full control of the slice
> Looking at this from an operator mindset, considering similarities with wholesale product offerings probably an analogy could be set in the sense of considering that:
> 1) what the tenant consumes is what is known as a managed service. The provider can use slicing mechanisms for that, but not only (or even a mix of slicing plus conventional service offerings). From the infrastructure point of view this is not so much different from sharing part of the network, or even partitioning in a more extreme case. But the provider retains the management and control e2e.
> 2) what the tenant is allowed is to managed its service to some extent. Then, from the service offering point of view, this would be equivalent to an unmanaged service (from the provider perspective). The tenant can make some operations / configurations, and the provider just provides the infrastructure necessary for that (understanding infrastructure in a broad sense, so including as well the network functions that the customer can configure). Once again, the provider can use slicing mechanisms for that, but not only (or even a mix of slicing plus conventional service offerings).
> 3) This is a pure slicing service from the provider perspective, where the tenant receives an e2e logical network, on top of a shared infrastructure with
> independent control and management. This necessary has to be implemented through slicing mechanisms, conventional ones are not more valid (this does not prevent that e.g. some overlay mechanisms could be used for the transport part).
> 
> My comment here is that probably the focus should be on (3) as the more complete and comprehensive scenario to analyze.
> 
> .- when talking about sharing or common usage of functions/elements, it is mentioned that such capability is performed by EMS/NMS. This is not clear to me. Such sharing capabilities are intrinsic to the element (e.g., VRFs in PE routers) or to the function (distinct APNs in GGSNs). This can be certainly instantiated or configured via EMS, but it is not a capability of them. Maybe you can clarify what you mean with that.
> 
> .- when talking about the different lifecycles for PNFs and VNFs it is mentioned that the NSMF should support service level abstractions. Since "service" is a very overloaded term I'm not sure about what kind or level of services you refer. I guess it should refer to network function level abstractions and connectivity abstractions, right? Because looking at TR 28.801 that the CSMF (the communications service  management function) passes to NSMF the requirements of the network slice in terms of network type, network capacity, QoS requirements, etc. In other words, the NSMF does not need to support customer service level abstractions, right?
> 
> .- It is not clear the purpose of Figure 1. It is not referenced in the text, then not clear to me if it is taken from some other place, if it is you final view of the problem, etc. Also it is not clear the origin of some entities like the Service M&O. Is it NGMN terminology? Is it 3GPP terminology? I don't think so, but maybe I'm wrong. For clarity it should be nice to have a better description and a better motivation for such figure.
> 
> .- Also it is mentioned that these constructs can be considered as part of the OSS/BSS according to TR28.801, but I think this is not correct. In section 7, TR 28.801 mentions: How network slice management functions are mapping to OSS/BSS is FFS
> 
> .- In general, I do not feel comfortable with your positioning of NSMF as part of OSS/BSS. I think that the purposes of OSS/BSS and NSMF are different and some positioning of NSMF with respect OSS/BSS like the one in ETSI NFV architecture is what I could expect. Linking NSMF to OSS/BSS creates important architectural dependencies for the evolution of the networks and for sure will difficult vendor interoperability/inter-manageability, as well as probably migration. This is what we are seeing today with more simplistic capabilities like SDN, for instance.
> 
> Probably I have misunderstood concepts, so any clarification is more than welcome.
> 
> Best regards
> 
> Luis
> 
> 
> -----Mensaje original-----
> De: Netslices [mailto:netslices-bounces@ietf.org] En nombre de Flinck, Hannu (Nokia - FI/Espoo)
> Enviado el: martes, 4 de julio de 2017 17:56
> Para: netslices@ietf.org
> Asunto: [Netslices] FW: New Version Notification for draft-flinck-slicing-management-00.txt
> 
> 
> 
> A new version of I-D, draft-flinck-slicing-management-00.txt
> has been successfully submitted by Hannu Flinck and posted to the IETF repository.
> 
> Name:draft-flinck-slicing-management
> Revision:00
> Title:Network Slicing Management and Orchestration
> Document date:2017-07-03
> Group:Individual Submission
> Pages:10
> URL:            https://www.ietf.org/internet-drafts/draft-flinck-slicing-management-00.txt
> Status:         https://datatracker.ietf.org/doc/draft-flinck-slicing-management/
> Htmlized:       https://tools.ietf.org/html/draft-flinck-slicing-management-00
> Htmlized:       https://datatracker.ietf.org/doc/html/draft-flinck-slicing-management-00
> 
> 
> Abstract:
>    Network Slicing is worked in multiple SDOs from different view
>    points.  As network slicing is an end-to-end topic, this draft
>    proposes that network slices architecture [NS-Framework] aligns with
>    the work done in NGMN, 3GPP and ETSI with relation to management and
>    orchestration.  The key aspect that this draft makes is the rational
>    for role and need for Network Slice Management Function (NSMF) entity
>    that operates above Network Virtualization Function Orchestrator and
>    PNFs Management Functions.  NSMF needs to support different
>    abstractions of resources and to offer access to different management
>    entities.
> 
> 
> 
> 
> 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.
> 
> The IETF Secretariat
> 
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-- 
Pedro Martinez-Julia
Network Science and Convergence Device Technology Laboratory
Network System Research Institute
National Institute of Information and Communications Technology (NICT)
4-2-1, Nukui-Kitamachi, Koganei, Tokyo 184-8795, Japan
Email: pedro@nict.go.jp
---------------------------------------------------------
*** Entia non sunt multiplicanda praeter necessitatem ***


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From: <mohamed.boucadair@orange.com>
To: "Flinck, Hannu (Nokia - FI/Espoo)" <hannu.flinck@nokia-bell-labs.com>, "netslices@ietf.org" <netslices@ietf.org>
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Dear Flinck,=20

Thank you for sharing this draft.=20

I had the impression that you assume a "slices for sale" approach (or a "le=
ase" network approach if you will) and that there is one single tenant for =
each instantiated network slice.=20

It is fine to cover this case (even if I have some concerns with it), but I=
 do personally see slicing as an internal tool for a network provider to ho=
nor the needs of services/customer having common requirements. That is a ne=
twork slice can be shared among multiple tenants/services. Doing so allows =
to rationalize the usage of resources within a network without requiring in=
stantiated slices to linearly increase as a function of the tenants.=20

I don't see this second perspective reflected in your document.

Cheers,
Med

> -----Message d'origine-----
> De=A0: Netslices [mailto:netslices-bounces@ietf.org] De la part de Flinck=
,
> Hannu (Nokia - FI/Espoo)
> Envoy=E9=A0: mardi 4 juillet 2017 17:56
> =C0=A0: netslices@ietf.org
> Objet=A0: [Netslices] FW: New Version Notification for draft-flinck-slici=
ng-
> management-00.txt
>=20
>=20
>=20
> A new version of I-D, draft-flinck-slicing-management-00.txt
> has been successfully submitted by Hannu Flinck and posted to the
> IETF repository.
>=20
> Name:		draft-flinck-slicing-management
> Revision:	00
> Title:		Network Slicing Management and Orchestration
> Document date:	2017-07-03
> Group:		Individual Submission
> Pages:		10
> URL:            https://www.ietf.org/internet-drafts/draft-flinck-slicing=
-
> management-00.txt
> Status:         https://datatracker.ietf.org/doc/draft-flinck-slicing-
> management/
> Htmlized:       https://tools.ietf.org/html/draft-flinck-slicing-
> management-00
> Htmlized:       https://datatracker.ietf.org/doc/html/draft-flinck-
> slicing-management-00
>=20
>=20
> Abstract:
>    Network Slicing is worked in multiple SDOs from different view
>    points.  As network slicing is an end-to-end topic, this draft
>    proposes that network slices architecture [NS-Framework] aligns with
>    the work done in NGMN, 3GPP and ETSI with relation to management and
>    orchestration.  The key aspect that this draft makes is the rational
>    for role and need for Network Slice Management Function (NSMF) entity
>    that operates above Network Virtualization Function Orchestrator and
>    PNFs Management Functions.  NSMF needs to support different
>    abstractions of resources and to offer access to different management
>    entities.
>=20
>=20
>=20
>=20
> 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.
>=20
> The IETF Secretariat
>=20
> _______________________________________________
> Netslices mailing list
> Netslices@ietf.org
> https://www.ietf.org/mailman/listinfo/netslices


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From: Gino Carrozzo <g.carrozzo@nextworks.it>
Date: Wed, 5 Jul 2017 18:58:20 +0200
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Hi Mohamed

If I correctly captured your point, the grouping of resources in a single
slice for multiple tenants will be driven by the capability to fulfill
similar service KPIs, e.g. for URLLC, eMBB, MTC, etc..

As such, doesn't the network slice "degenerate" into a set of NS-es
originated by the network [slice] operator?
Would the only control modes applicable to this case be 1) Monitoring only
and 2) limited configuration of VNFs? I.e. there would be no need for a
MANO stack for the slice consumer.

Thanks for your clarification
br
Gino

On 5 July 2017 at 15:52, <mohamed.boucadair@orange.com> wrote:

> Dear Flinck,
>
> Thank you for sharing this draft.
>
> I had the impression that you assume a "slices for sale" approach (or a
> "lease" network approach if you will) and that there is one single tenant
> for each instantiated network slice.
>
> It is fine to cover this case (even if I have some concerns with it), but
> I do personally see slicing as an internal tool for a network provider to
> honor the needs of services/customer having common requirements. That is =
a
> network slice can be shared among multiple tenants/services. Doing so
> allows to rationalize the usage of resources within a network without
> requiring instantiated slices to linearly increase as a function of the
> tenants.
>
> I don't see this second perspective reflected in your document.
>
> Cheers,
> Med
>
> > -----Message d'origine-----
> > De : Netslices [mailto:netslices-bounces@ietf.org] De la part de Flinck=
,
> > Hannu (Nokia - FI/Espoo)
> > Envoy=C3=A9 : mardi 4 juillet 2017 17:56
> > =C3=80 : netslices@ietf.org
> > Objet : [Netslices] FW: New Version Notification for
> draft-flinck-slicing-
> > management-00.txt
> >
> >
> >
> > A new version of I-D, draft-flinck-slicing-management-00.txt
> > has been successfully submitted by Hannu Flinck and posted to the
> > IETF repository.
> >
> > Name:         draft-flinck-slicing-management
> > Revision:     00
> > Title:                Network Slicing Management and Orchestration
> > Document date:        2017-07-03
> > Group:                Individual Submission
> > Pages:                10
> > URL:            https://www.ietf.org/internet-
> drafts/draft-flinck-slicing-
> > management-00.txt
> > Status:         https://datatracker.ietf.org/doc/draft-flinck-slicing-
> > management/
> > Htmlized:       https://tools.ietf.org/html/draft-flinck-slicing-
> > management-00
> > Htmlized:       https://datatracker.ietf.org/doc/html/draft-flinck-
> > slicing-management-00
> >
> >
> > Abstract:
> >    Network Slicing is worked in multiple SDOs from different view
> >    points.  As network slicing is an end-to-end topic, this draft
> >    proposes that network slices architecture [NS-Framework] aligns with
> >    the work done in NGMN, 3GPP and ETSI with relation to management and
> >    orchestration.  The key aspect that this draft makes is the rational
> >    for role and need for Network Slice Management Function (NSMF) entit=
y
> >    that operates above Network Virtualization Function Orchestrator and
> >    PNFs Management Functions.  NSMF needs to support different
> >    abstractions of resources and to offer access to different managemen=
t
> >    entities.
> >
> >
> >
> >
> > 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.
> >
> > The IETF Secretariat
> >
> > _______________________________________________
> > Netslices mailing list
> > Netslices@ietf.org
> > https://www.ietf.org/mailman/listinfo/netslices
>
> _______________________________________________
> Netslices mailing list
> Netslices@ietf.org
> https://www.ietf.org/mailman/listinfo/netslices
>



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=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
  Dr. Gino Carrozzo
  Deputy Head of R&D

  mobile    : +39 348 7610 081
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<div dir=3D"ltr">Hi Mohamed<div><br></div><div>If I correctly captured your=
 point, the grouping of resources in a single slice for multiple tenants wi=
ll be driven by the capability to fulfill similar service KPIs, e.g. for UR=
LLC, eMBB, MTC, etc..</div><div><br></div><div>As such, doesn&#39;t the net=
work slice &quot;degenerate&quot; into a set of NS-es originated by the net=
work [slice] operator?</div><div>Would the only control modes applicable to=
 this case be 1) Monitoring only and 2) limited configuration of VNFs? I.e.=
 there would be no need for a MANO stack for the slice consumer.</div><div>=
<br></div><div>Thanks for your clarification</div><div>br</div><div>Gino=C2=
=A0</div></div><div class=3D"gmail_extra"><br><div class=3D"gmail_quote">On=
 5 July 2017 at 15:52,  <span dir=3D"ltr">&lt;<a href=3D"mailto:mohamed.bou=
cadair@orange.com" target=3D"_blank">mohamed.boucadair@orange.com</a>&gt;</=
span> wrote:<br><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8e=
x;border-left:1px #ccc solid;padding-left:1ex">Dear Flinck,<br>
<br>
Thank you for sharing this draft.<br>
<br>
I had the impression that you assume a &quot;slices for sale&quot; approach=
 (or a &quot;lease&quot; network approach if you will) and that there is on=
e single tenant for each instantiated network slice.<br>
<br>
It is fine to cover this case (even if I have some concerns with it), but I=
 do personally see slicing as an internal tool for a network provider to ho=
nor the needs of services/customer having common requirements. That is a ne=
twork slice can be shared among multiple tenants/services. Doing so allows =
to rationalize the usage of resources within a network without requiring in=
stantiated slices to linearly increase as a function of the tenants.<br>
<br>
I don&#39;t see this second perspective reflected in your document.<br>
<br>
Cheers,<br>
Med<br>
<br>
&gt; -----Message d&#39;origine-----<br>
&gt; De=C2=A0: Netslices [mailto:<a href=3D"mailto:netslices-bounces@ietf.o=
rg">netslices-bounces@<wbr>ietf.org</a>] De la part de Flinck,<br>
&gt; Hannu (Nokia - FI/Espoo)<br>
&gt; Envoy=C3=A9=C2=A0: mardi 4 juillet 2017 17:56<br>
&gt; =C3=80=C2=A0: <a href=3D"mailto:netslices@ietf.org">netslices@ietf.org=
</a><br>
&gt; Objet=C2=A0: [Netslices] FW: New Version Notification for draft-flinck=
-slicing-<br>
&gt; management-00.txt<br>
&gt;<br>
&gt;<br>
&gt;<br>
<div class=3D"HOEnZb"><div class=3D"h5">&gt; A new version of I-D, draft-fl=
inck-slicing-<wbr>management-00.txt<br>
&gt; has been successfully submitted by Hannu Flinck and posted to the<br>
&gt; IETF repository.<br>
&gt;<br>
&gt; Name:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0draft-flinck-slicing-<wbr>manag=
ement<br>
&gt; Revision:=C2=A0 =C2=A0 =C2=A000<br>
&gt; Title:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 Network =
Slicing Management and Orchestration<br>
&gt; Document date:=C2=A0 =C2=A0 =C2=A0 =C2=A0 2017-07-03<br>
&gt; Group:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 Individu=
al Submission<br>
&gt; Pages:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 10<br>
&gt; URL:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 <a href=3D"https://www.i=
etf.org/internet-drafts/draft-flinck-slicing-" rel=3D"noreferrer" target=3D=
"_blank">https://www.ietf.org/internet-<wbr>drafts/draft-flinck-slicing-</a=
><br>
&gt; management-00.txt<br>
&gt; Status:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0<a href=3D"https://datatracke=
r.ietf.org/doc/draft-flinck-slicing-" rel=3D"noreferrer" target=3D"_blank">=
https://datatracker.ietf.org/<wbr>doc/draft-flinck-slicing-</a><br>
&gt; management/<br>
&gt; Htmlized:=C2=A0 =C2=A0 =C2=A0 =C2=A0<a href=3D"https://tools.ietf.org/=
html/draft-flinck-slicing-" rel=3D"noreferrer" target=3D"_blank">https://to=
ols.ietf.org/html/<wbr>draft-flinck-slicing-</a><br>
&gt; management-00<br>
&gt; Htmlized:=C2=A0 =C2=A0 =C2=A0 =C2=A0<a href=3D"https://datatracker.iet=
f.org/doc/html/draft-flinck-" rel=3D"noreferrer" target=3D"_blank">https://=
datatracker.ietf.org/<wbr>doc/html/draft-flinck-</a><br>
&gt; slicing-management-00<br>
&gt;<br>
&gt;<br>
&gt; Abstract:<br>
&gt;=C2=A0 =C2=A0 Network Slicing is worked in multiple SDOs from different=
 view<br>
&gt;=C2=A0 =C2=A0 points.=C2=A0 As network slicing is an end-to-end topic, =
this draft<br>
&gt;=C2=A0 =C2=A0 proposes that network slices architecture [NS-Framework] =
aligns with<br>
&gt;=C2=A0 =C2=A0 the work done in NGMN, 3GPP and ETSI with relation to man=
agement and<br>
&gt;=C2=A0 =C2=A0 orchestration.=C2=A0 The key aspect that this draft makes=
 is the rational<br>
&gt;=C2=A0 =C2=A0 for role and need for Network Slice Management Function (=
NSMF) entity<br>
&gt;=C2=A0 =C2=A0 that operates above Network Virtualization Function Orche=
strator and<br>
&gt;=C2=A0 =C2=A0 PNFs Management Functions.=C2=A0 NSMF needs to support di=
fferent<br>
&gt;=C2=A0 =C2=A0 abstractions of resources and to offer access to differen=
t management<br>
&gt;=C2=A0 =C2=A0 entities.<br>
&gt;<br>
&gt;<br>
&gt;<br>
&gt;<br>
&gt; Please note that it may take a couple of minutes from the time of<br>
&gt; submission<br>
&gt; until the htmlized version and diff are available at <a href=3D"http:/=
/tools.ietf.org" rel=3D"noreferrer" target=3D"_blank">tools.ietf.org</a>.<b=
r>
&gt;<br>
&gt; The IETF Secretariat<br>
&gt;<br>
&gt; ______________________________<wbr>_________________<br>
&gt; Netslices mailing list<br>
&gt; <a href=3D"mailto:Netslices@ietf.org">Netslices@ietf.org</a><br>
&gt; <a href=3D"https://www.ietf.org/mailman/listinfo/netslices" rel=3D"nor=
eferrer" target=3D"_blank">https://www.ietf.org/mailman/<wbr>listinfo/netsl=
ices</a><br>
<br>
______________________________<wbr>_________________<br>
Netslices mailing list<br>
<a href=3D"mailto:Netslices@ietf.org">Netslices@ietf.org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/netslices" rel=3D"noreferr=
er" target=3D"_blank">https://www.ietf.org/mailman/<wbr>listinfo/netslices<=
/a><br>
</div></div></blockquote></div><br><br clear=3D"all"><div><br></div>-- <br>=
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</div>

--001a1147d80052e4ca055394e84f--


From nobody Wed Jul  5 15:51:58 2017
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Reply-To: <adrian@olddog.co.uk>
From: "Adrian Farrel" <adrian@olddog.co.uk>
To: "Network Slices" <netslices@ietf.org>
Cc: <Gonzalo.Camarillo@ericsson.com>, <bclaise@cisco.com>
Date: Wed, 5 Jul 2017 23:51:50 +0100
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Archived-At: <https://mailarchive.ietf.org/arch/msg/netslices/5FnqjDhVeJ0ueSg44MqZxzAIWwY>
Subject: [Netslices] Draft agenda for Netslices BoF
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Hi,

This is what Gonzalo and I are posting as our work in progress agenda.

Thanks,
Adrian
=====
1. Administrivia (chairs) [5 : 5/120]

2. Purpose of BoF (chairs/AD) [5 : 10/120]

3. How the IETF would approach this space (and what we won't do) (chairs) [5 :
15/120]

4. 3GPP viewpoint (Georg Mayer) [10 : 25/120]
   - current status
   - taxonomy in 3GPP
   - use cases
   - requirements

5. Understanding what different people mean by Network Slicing
   Addressing the following questions:
   - What do I mean by network slicing?
   - What are my main use cases?
   - What IETF work is in progress/needed?
   - What non-IETF work is relevant?

  a. BoF proponents' view of network slicing

     i. Terms and Systems (Alex Galis) [10 : 35/120]
        IETF problems to solve / needing work
        draft-galis-netslices-revised-problem-statement
        draft-netslices-usecases

     ii. Requirements and Gap Analysis (Cristina Qiang) [10: 45/120]
        draft-geng-netslices-architecture
        draft-qiang-netslices-gap-analysis

  b. Network virtualization and network slicing (Daniel King) [10 : 55/120]
     draft-king-teas-applicability-actn-slicing

  c. Applicability of network slicing to IoT (Jari Arkko - PEND) [10 : 65/120]

  d. Routing and Forwarding in support of Networking Slicing (Stewart Bryant)
[10 : 75/120]

  e. Network slice management and orchestration (Hannu Flinck) [10 : 85/120]

6. Open discussion (chairs) [20 : 105/120]

7. Answering the RFC 5434 questions (chairs) [5 : 110/120

8. Conclusions and next steps (chairs and ADs) [10 : 120/120]


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CC: "Flinck, Hannu (Nokia - FI/Espoo)" <hannu.flinck@nokia-bell-labs.com>, "netslices@ietf.org" <netslices@ietf.org>
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Archived-At: <https://mailarchive.ietf.org/arch/msg/netslices/OHW9gwCytlbiEjdvpSAIgUVu5Aw>
Subject: Re: [Netslices] FW: New Version Notification for draft-flinck-slicing-management-00.txt
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Hi Hannu,

I like the idea of adding ETSI MANO to the picture and distinguish PNF and =
VNF since the Orchestration of these different types of resources in a netw=
ork slice instance may be very different. We can discuss further to see how=
 the Framwork document address your concerns

However, the SA5 terms NSMF (which is E2E orchestration in NS-Framework) an=
d NSSMF (which is domain orchestration in NS-Framework) may need further di=
scussion. I am slightly worried about directly using terms defined in other=
 SDOs because you never know what they possibly mean tomorrow.

Best wishes
Liang


________________________________
Liang GENG
China Mobile Research Institute

From: Flinck, Hannu (Nokia - FI/Espoo)<mailto:hannu.flinck@nokia-bell-labs.=
com>
Date: 2017-07-04 23:56
To: netslices@ietf.org<mailto:netslices@ietf.org>
Subject: [Netslices] FW: New Version Notification for draft-flinck-slicing-=
management-00.txt


A new version of I-D, draft-flinck-slicing-management-00.txt
has been successfully submitted by Hannu Flinck and posted to the
IETF repository.

Name: draft-flinck-slicing-management
Revision: 00
Title: Network Slicing Management and Orchestration
Document date: 2017-07-03
Group: Individual Submission
Pages: 10
URL:            https://www.ietf.org/internet-drafts/draft-flinck-slicing-m=
anagement-00.txt
Status:         https://datatracker.ietf.org/doc/draft-flinck-slicing-manag=
ement/
Htmlized:       https://tools.ietf.org/html/draft-flinck-slicing-management=
-00
Htmlized:       https://datatracker.ietf.org/doc/html/draft-flinck-slicing-=
management-00


Abstract:
   Network Slicing is worked in multiple SDOs from different view
   points.  As network slicing is an end-to-end topic, this draft
   proposes that network slices architecture [NS-Framework] aligns with
   the work done in NGMN, 3GPP and ETSI with relation to management and
   orchestration.  The key aspect that this draft makes is the rational
   for role and need for Network Slice Management Function (NSMF) entity
   that operates above Network Virtualization Function Orchestrator and
   PNFs Management Functions.  NSMF needs to support different
   abstractions of resources and to offer access to different management
   entities.




Please note that it may take a couple of minutes from the time of submissio=
n
until the htmlized version and diff are available at tools.ietf.org.

The IETF Secretariat

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<html>
<head>
<meta http-equiv=3D"Content-Type" content=3D"text/html; charset=3Diso-8859-=
1">
<style>body { line-height: 1.5; }blockquote { margin-top: 0px; margin-botto=
m: 0px; margin-left: 0.5em; }body { font-size: 10.5pt; font-family: Tahoma;=
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<body>
<div><span></span>Hi Hannu,</div>
<div><br>
</div>
<div>I like the idea of adding ETSI MANO to the picture and distinguish PNF=
 and VNF since the Orchestration of these different types of resources in a=
 network slice instance may be very different. We can discuss further to se=
e how the Framwork document address
 your concerns</div>
<div><br>
</div>
<div>However, the SA5 terms NSMF (which is E2E orchestration in&nbsp;<span =
style=3D"font-size: 10.5pt; line-height: 1.5; background-color: window;">NS=
-Framework</span><span style=3D"font-size: 10.5pt; line-height: 1.5; backgr=
ound-color: window;">) and NSSMF (which is
 domain orchestration in NS-Framework) may need further discussion. I am sl=
ightly worried about directly using terms defined in other SDOs because you=
 never know what they possibly mean tomorrow.</span></div>
<div><span style=3D"font-size: 10.5pt; line-height: 1.5; background-color: =
window;"><br>
</span></div>
<div><span style=3D"font-size: 10.5pt; line-height: 1.5; background-color: =
window;">Best wishes</span></div>
<div><span style=3D"font-size: 10.5pt; line-height: 1.5; background-color: =
window;">Liang</span></div>
<div><span style=3D"font-size: 10.5pt; line-height: 1.5; background-color: =
window;"><br>
</span></div>
<div><br>
</div>
<hr style=3D"width: 210px; height: 1px;" color=3D"#b5c4df" size=3D"1" align=
=3D"left">
<div><span>Liang GENG
<div>China Mobile Research Institute</div>
</span></div>
<blockquote style=3D"margin-top: 0px; margin-bottom: 0px; margin-left: 0.5e=
m;">
<div>&nbsp;</div>
<div style=3D"border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm =
0cm 0cm">
<div style=3D"PADDING-RIGHT: 8px; PADDING-LEFT: 8px; FONT-SIZE: 12px;FONT-F=
AMILY:tahoma;COLOR:#000000; BACKGROUND: #efefef; PADDING-BOTTOM: 8px; PADDI=
NG-TOP: 8px">
<div><b>From:</b>&nbsp;<a href=3D"mailto:hannu.flinck@nokia-bell-labs.com">=
Flinck, Hannu (Nokia - FI/Espoo)</a></div>
<div><b>Date:</b>&nbsp;2017-07-04&nbsp;23:56</div>
<div><b>To:</b>&nbsp;<a href=3D"mailto:netslices@ietf.org">netslices@ietf.o=
rg</a></div>
<div><b>Subject:</b>&nbsp;[Netslices] FW: New Version Notification for draf=
t-flinck-slicing-management-00.txt</div>
</div>
</div>
<div>
<div>&nbsp;</div>
<div>&nbsp;</div>
<div>A new version of I-D, draft-flinck-slicing-management-00.txt</div>
<div>has been successfully submitted by Hannu Flinck and posted to the</div=
>
<div>IETF repository.</div>
<div>&nbsp;</div>
<div>Name: draft-flinck-slicing-management</div>
<div>Revision: 00</div>
<div>Title: Network Slicing Management and Orchestration</div>
<div>Document date: 2017-07-03</div>
<div>Group: Individual Submission</div>
<div>Pages: 10</div>
<div>URL:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
 https://www.ietf.org/internet-drafts/draft-flinck-slicing-management-00.tx=
t</div>
<div>Status:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; https://datatr=
acker.ietf.org/doc/draft-flinck-slicing-management/</div>
<div>Htmlized:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; https://tools.ietf.org/h=
tml/draft-flinck-slicing-management-00</div>
<div>Htmlized:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; https://datatracker.ietf=
.org/doc/html/draft-flinck-slicing-management-00</div>
<div>&nbsp;</div>
<div>&nbsp;</div>
<div>Abstract:</div>
<div>&nbsp;&nbsp; Network Slicing is worked in multiple SDOs from different=
 view</div>
<div>&nbsp;&nbsp; points.&nbsp; As network slicing is an end-to-end topic, =
this draft</div>
<div>&nbsp;&nbsp; proposes that network slices architecture [NS-Framework] =
aligns with</div>
<div>&nbsp;&nbsp; the work done in NGMN, 3GPP and ETSI with relation to man=
agement and</div>
<div>&nbsp;&nbsp; orchestration.&nbsp; The key aspect that this draft makes=
 is the rational</div>
<div>&nbsp;&nbsp; for role and need for Network Slice Management Function (=
NSMF) entity</div>
<div>&nbsp;&nbsp; that operates above Network Virtualization Function Orche=
strator and</div>
<div>&nbsp;&nbsp; PNFs Management Functions.&nbsp; NSMF needs to support di=
fferent</div>
<div>&nbsp;&nbsp; abstractions of resources and to offer access to differen=
t management</div>
<div>&nbsp;&nbsp; entities.</div>
<div>&nbsp;</div>
<div>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</div>
<div>&nbsp;</div>
<div>&nbsp;</div>
<div>Please note that it may take a couple of minutes from the time of subm=
ission</div>
<div>until the htmlized version and diff are available at tools.ietf.org.</=
div>
<div>&nbsp;</div>
<div>The IETF Secretariat</div>
<div>&nbsp;</div>
<div>_______________________________________________</div>
<div>Netslices mailing list</div>
<div>Netslices@ietf.org</div>
<div>https://www.ietf.org/mailman/listinfo/netslices</div>
</div>
</blockquote>
</body>
</html>

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From nobody Sun Jul  9 12:08:20 2017
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From: Lou Berger <lberger@labn.net>
To: netslices@ietf.org
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Archived-At: <https://mailarchive.ietf.org/arch/msg/netslices/FnZRxxPQVqLLIi1YrN3vGhc0Kt0>
Subject: [Netslices] Some comments on draft-qiang-netslices-gap-analysis
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Hi,

With all they "excitement" on slicing I'm sure there is work to be done
on the topic, but I think it would be good for such work to build on
(and at worst, understand) the IETF technology/RFCs.  In reading this
draft, I really felt like the authors were not familiar with the
substantive work that has been on TE networks over the years, notably:

- Section 5.2 cross domain coordination

There are many years of work and related RFCs in this area in IETF TE
that are missing from the 'gap analysis' .  I suggest reading RFC7926 as
a good primer on existing RFCs as well as some background that predates
the current TEAS ACTN work.

- WRT Section 6.2.1 and 2.3 

MPLS-TE solutions are broader than just signaling, i.e., routing is just
as important.  RCF7926 has sufficient pointers to good references for
this.  On a more specific note, this section is missing the intersection
of VPNs and RSVP-TE and L3VPNs, see RFC 6882.  Even more notably, the
section is missing that TE LSPs can support the Guaranteed Quality of
Service defined by RFC2212 (even if some vendors choose not to implement
it), GS is defined as:

   Guaranteed service provides firm (mathematically provable)
   bounds on end-to-end datagram queueing delays.  This service makes it
   possible to provide a service that guarantees both delay and
   bandwidth.

- Also, separately and in the context of Section 6.2.5

I think the 1st paragraph of correctly states that DetNet is concerned
with "low packet loss rates, low packet  delay variation (jitter) and
assured maximum end-to-end delivery latency." (leveraging existing RFCs
to the maximum extent possible.)  But much of the rest of the section
contradicts this and I really can't seem to parse the 2nd paragraph in
any way that makes sense in the context of detnet or delivering low
loss, low jitter and deterministic latency.

Also,  I suggest referencing 802.1TSN in the context or DetNet or
independently.  FWIW there is an 802.1 TSN tutorial scheduled for Sunday
(1345-1445 in Congress Hall III) and we'll be spending some time in the
DetNet WG session on understanding 802.1 TSN's flow
requirements/capabilities and how to they might be leveraged (and
support) by DetNet.

- finally, WRT timing

I'd think mentioned 1588 and other related time sync work in IETF could
be relevant.

Lou



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From: Daniele Ceccarelli <daniele.ceccarelli@ericsson.com>
To: Lou Berger <lberger@labn.net>, "netslices@ietf.org" <netslices@ietf.org>
Thread-Topic: [Netslices] Some comments on draft-qiang-netslices-gap-analysis
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Archived-At: <https://mailarchive.ietf.org/arch/msg/netslices/sBV8zFpSC5GHPYDUvrhsRmDgQp0>
Subject: Re: [Netslices] Some comments on draft-qiang-netslices-gap-analysis
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Hi all,

while i totally share Lou's point of view I'd like to add some references t=
hat might help understanding what is already there and possibly targeting a=
 better gap analysis.

The 9 requirements shown in table 1 and mapped against 4 KEY requirements a=
re very valuable but I struggle to see the difference between them and the =
ACTN requirements ,where we have 8 service-related requirements and 5 netwo=
rk-related requirements (https://tools.ietf.org/html/draft-ietf-teas-actn-r=
equirements-05 WG document since Oct 2015).

When it comes to the solutions for those requirements Lou correctly pointed=
 out at RFC 7926 (Problem Statement and Architecture for Information Exchan=
ge between Interconnected Traffic-Engineered Networks) and on the TEAS WG a=
nd PCE WG pages you can find a number of documents including framework, abs=
traction methods, info model, interfaces, applicability of PCE and YANG mod=
els to ACTN, telemetry. In particular I'd like to mention the ACTN VN, whic=
h is a construct that sees to address many of the requirements for the netw=
ork slicing.=20

My analysis of the gaps is as follows (please correct what I'm missing).
Req 1 - Network Slicing Specification: To me this looks like exactly an ACT=
N Virtual Network. In section 4.1 one thing that I understand to be missing=
 to the VN is the reachability scope (limited scope vs Internet-wide).
Req 2 - Network Slicing Cross-Domain Coordination: This seems to be one of =
the MDSC functionalities, actually the most important.
Req 3 - Network Slicing Performance Guarantee and Isolation: This is a targ=
et that can be reached via a Virtual Network, where resources can be dedica=
ted to a slice or shared among slices and the computation done with constra=
ints. Extensions for VN Telemetry are already available (even if this is at=
 an earlier stage).
Req 4 - Network Slicing OAM (NS-OAM). Being the VN members defined as a set=
 of stitched tunnels and LSPs the OAM tools available for tunnels and LSPs =
are automatically inherited.

Two more detailed comments:

1. Section  5.2.3.
It is said that: " However, ACTN focuses on resource
   abstraction and management on Layer 2 and Layer 1.  For transport
   network slicing, resources abstraction and management on Layer 3+
   (e.g., IP routing table, etc.) may also be necessary but have not
   been addressed by ACTN."
I don't know where MPLS is positioned in your analysis (according to some p=
eople it's layer 2, to some others it's 2.5, and someone believes it's laye=
r 3), but ACTN covers any kind of TE technology, including MPLS-TE and SR-T=
E. Building a slice without TE, well, it can be done, but how is it possibl=
e to guarantee KPIs, SLA, and so on?=20


2. Section 6.2.3.
It is said that: "RSVP-TE LSPs can be used as the underlay tunnels
   of the VPN service connections.  However, the requirement of some
   emerging services is not only about traffic bandwidth, but also has
   quite strict requirement on latency, jitter, etc.  Such requirements
   can hardly be met with existing RSVP-TE."
RSVP-TE is used to reserve the resource along the path meeting the required=
 constraints. If such path exists, RSVP-TE can reserve it, otherwise no one=
 can.

Hence my disagreement with the conclusions in Table 2.

Thank you
Daniele =20

-----Original Message-----
From: Netslices [mailto:netslices-bounces@ietf.org] On Behalf Of Lou Berger
Sent: domenica 9 luglio 2017 21:08
To: netslices@ietf.org
Subject: [Netslices] Some comments on draft-qiang-netslices-gap-analysis

Hi,

With all they "excitement" on slicing I'm sure there is work to be done on =
the topic, but I think it would be good for such work to build on (and at w=
orst, understand) the IETF technology/RFCs.  In reading this draft, I reall=
y felt like the authors were not familiar with the substantive work that ha=
s been on TE networks over the years, notably:

- Section 5.2 cross domain coordination

There are many years of work and related RFCs in this area in IETF TE that =
are missing from the 'gap analysis' .  I suggest reading RFC7926 as a good =
primer on existing RFCs as well as some background that predates the curren=
t TEAS ACTN work.

- WRT Section 6.2.1 and 2.3=20

MPLS-TE solutions are broader than just signaling, i.e., routing is just as=
 important.  RCF7926 has sufficient pointers to good references for this.  =
On a more specific note, this section is missing the intersection of VPNs a=
nd RSVP-TE and L3VPNs, see RFC 6882.  Even more notably, the section is mis=
sing that TE LSPs can support the Guaranteed Quality of Service defined by =
RFC2212 (even if some vendors choose not to implement it), GS is defined as=
:

   Guaranteed service provides firm (mathematically provable)
   bounds on end-to-end datagram queueing delays.  This service makes it
   possible to provide a service that guarantees both delay and
   bandwidth.

- Also, separately and in the context of Section 6.2.5

I think the 1st paragraph of correctly states that DetNet is concerned with=
 "low packet loss rates, low packet  delay variation (jitter) and assured m=
aximum end-to-end delivery latency." (leveraging existing RFCs to the maxim=
um extent possible.)  But much of the rest of the section contradicts this =
and I really can't seem to parse the 2nd paragraph in any way that makes se=
nse in the context of detnet or delivering low loss, low jitter and determi=
nistic latency.

Also,  I suggest referencing 802.1TSN in the context or DetNet or independe=
ntly.  FWIW there is an 802.1 TSN tutorial scheduled for Sunday
(1345-1445 in Congress Hall III) and we'll be spending some time in the Det=
Net WG session on understanding 802.1 TSN's flow requirements/capabilities =
and how to they might be leveraged (and
support) by DetNet.

- finally, WRT timing

I'd think mentioned 1588 and other related time sync work in IETF could be =
relevant.

Lou


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Archived-At: <https://mailarchive.ietf.org/arch/msg/netslices/zApUl9janOrk_RcsfAaPZk0gFhc>
Subject: Re: [Netslices] Some comments on draft-qiang-netslices-gap-analysiswe are not
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Hi Lou, Daniele and All

Thank you for your constructive comments  and views.

Please note that there are references and suggestions on how ACTN =
tenologieies could be used in part for Network Slicing in the following =
drafts:

=E2=80=A2 Network Slicing - Revised Problem Statement =
draft-galis-netslices-revised-problem-statement-01
=E2=80=A2 Network Slicing Architecture =
draft-geng-netslices-architecture-02
=E2=80=A2 Network Slicing Use Cases: Network Customization and =
Differentiated Services draft-netslices-usecases-01

Please also note that we are not proposing an other VPN++ or an other =
overlay to be defined /designed at IETF. What would be the point of such =
unnecessary proposals  which would create at best yet an other network =
with best effort support for all services?

Some of the requirements for NetSlicing are similar to ACTN requirements =
however they differ in the following key characterisations:
=E2=80=A2 NS is mainly an in-band management concept in support  well at =
least one service at a given time. It is also coordinating/orchestrating =
network functions and resources.

=E2=80=A2 NS is dynamically and non-disruptively reprovisioned.

=E2=80=A2 Network slices are concurrently deployed as multiple logical, =
self-contained and independent, partitioned network & service functions =
and resources (connectivity, storage and computation  resources) a =
common physical infrastructure in order to support well at least one =
service at a given time.

* NS has as the ability to dynamically expose and possibly negotiate the =
parameters that characterise an network slice. Network slices are =
configurable and programmable.

=E2=80=A2 NS has its own operator that sees it as a complete network =
infrastructure and to use part of the network resources to meet =
stringent resource requirements.

=E2=80=A2 NS is supporting tenant(s) that are strongly independent on =
infrastructure.

=E2=80=A2 NS is introducing an additional layer of abstraction by the =
creation of logically or physically isolated groups of network resources =
and network function/virtual network functions configurations separating =
its behaviour from the underlying physical network. =20

As such NS is not an overlay or an underlay (i.e. a VPN++)

I hope that the above would be of help to you.

Best Regards
Alex



> On 10 Jul 2017, at 14:06, Daniele Ceccarelli =
<daniele.ceccarelli@ericsson.com> wrote:
>=20
> Hi all,
>=20
> while i totally share Lou's point of view I'd like to add some =
references that might help understanding what is already there and =
possibly targeting a better gap analysis.
>=20
> The 9 requirements shown in table 1 and mapped against 4 KEY =
requirements are very valuable but I struggle to see the difference =
between them and the ACTN requirements ,where we have 8 service-related =
requirements and 5 network-related requirements =
(https://tools.ietf.org/html/draft-ietf-teas-actn-requirements-05 WG =
document since Oct 2015).
>=20
> When it comes to the solutions for those requirements Lou correctly =
pointed out at RFC 7926 (Problem Statement and Architecture for =
Information Exchange between Interconnected Traffic-Engineered Networks) =
and on the TEAS WG and PCE WG pages you can find a number of documents =
including framework, abstraction methods, info model, interfaces, =
applicability of PCE and YANG models to ACTN, telemetry. In particular =
I'd like to mention the ACTN VN, which is a construct that sees to =
address many of the requirements for the network slicing.=20
>=20
> My analysis of the gaps is as follows (please correct what I'm =
missing).
> Req 1 - Network Slicing Specification: To me this looks like exactly =
an Ato be CTN Virtual Network. In section 4.1 one thing that I =
understand to be missing to the VN is the reachability scope (limited =
scope vs Internet-wide).
> Req 2 - Network Slicing Cross-Domain Coordination: This seems to be =
one of the MDSC functionalities, actually the most important.
> Req 3 - Network Slicing Performance Guarantee and Isolation: This is a =
target that can be reached via a Virtual Network, where resources can be =
dedicated to a slice or shared among slices and the computation done =
with constraints. Extensions for VN Telemetry are already available =
(even if this is at an earlier stage).
> Req 4 - Network Slicing OAM (NS-OAM). Being the VN members defined as =
a set of stitched tunnels and LSPs the OAM tools available for tunnels =
and LSPs are automatically inherited.
>=20
> Two more detailed comments:
>=20
> 1. Section  5.2.3.
> It is said that: " However, ACTN focuses on resource
>   abstraction and management on Layer 2 and Layer 1.  For transport
>   network slicing, resources abstraction and management on Layer 3+
>   (e.g., IP routing table, etc.) may also be necessary but have not
>   been addressed by ACTN."
> I don't know where MPLS is positioned in your analysis (according to =
some people it's layer 2, to some others it's 2.5, and someone believes =
it's layer 3), but ACTN covers any kind of TE technology, including =
MPLS-TE and SR-TE. Building a slice without TE, well, it can be done, =
but how is it possible to guarantee KPIs, SLA, and so on?=20
>=20
>=20
> 2. Section 6.2.3.
> It is said that: "RSVP-TE LSPs can be used as the underlay tunnels
>   of the VPN service connections.  However, the requirement of some
>   emerging services is not only about traffic bandwidth, but also has
>   quite strict requirement on latency, jitter, etc.  Such requirements
>   can hardly be met with existing RSVP-TE."
> RSVP-TE is used to reserve the resource along the path meeting the =
required constraints. If such path exists, RSVP-TE can reserve it, =
otherwise no one can.
>=20
> Hence my disagreement with the conclusions in Table 2.
>=20
> Thank you
> Daniele =20
>=20
> -----Original Message-----
> From: Netslices [mailto:netslices-bounces@ietf.org] On Behalf Of Lou =
Berger
> Sent: domenica 9 luglio 2017 21:08
> To: netslices@ietf.org
> Subject: [Netslices] Some comments on =
draft-qiang-netslices-gap-analysis
>=20
> Hi,
>=20
> With all they "excitement" on slicing I'm sure there is work to be =
done on the topic, but I think it would be good for such work to build =
on (and at worst, understand) the IETF technology/RFCs.  In reading this =
draft, I really felt like the authors were not familiar with the =
substantive work that has been on TE networks over the years, notably:
>=20
> - Section 5.2 cross domain coordination
>=20
> There are many years of work and related RFCs in this area in IETF TE =
that are missing from the 'gap analysis' .  I suggest reading RFC7926 as =
a good primer on existing RFCs as well as some background that predates =
the current TEAS ACTN work.
>=20
> - WRT Section 6.2.1 and 2.3=20
>=20
> MPLS-TE solutions are broader than just signaling, i.e., routing is =
just as important.  RCF7926 has sufficient pointers to good references =
for this.  On a more specific note, this section is missing the =
intersection of VPNs and RSVP-TE and L3VPNs, see RFC 6882.  Even more =
notably, the section is missing that TE LSPs can support the Guaranteed =
Quality of Service defined by RFC2212 (even if some vendors choose not =
to implement it), GS is defined as:
>=20
>   Guaranteed service provides firm (mathematically provable)
>   bounds on end-to-end datagram queueing delays.  This service makes =
it
>   possible to provide a service that guarantees both delay and
>   bandwidth.
>=20
> - Also, separately and in the context of Section 6.2.5
>=20
> I think the 1st paragraph of correctly states that DetNet is concerned =
with "low packet loss rates, low packet  delay variation (jitter) and =
assured maximum end-to-end delivery latency." (leveraging existing RFCs =
to the maximum extent possible.)  But much of the rest of the section =
contradicts this and I really can't seem to parse the 2nd paragraph in =
any way that makes sense in the context of detnet or delivering low =
loss, low jitter and deterministic latency.
>=20
> Also,  I suggest referencing 802.1TSN in the context or DetNet or =
independently.  FWIW there is an 802.1 TSN tutorial scheduled for Sunday
> (1345-1445 in Congress Hall III) and we'll be spending some time in =
the DetNet WG session on understanding 802.1 TSN's flow =
requirements/capabilities and how to they might be leveraged (and
> support) by DetNet.
>=20
> - finally, WRT timing
>=20
> I'd think mentioned 1588 and other related time sync work in IETF =
could be relevant.
>=20
> Lou
>=20
>=20
> _______________________________________________
> Netslices mailing list
> Netslices@ietf.org
> https://www.ietf.org/mailman/listinfo/netslices
>=20
> _______________________________________________
> Netslices mailing list
> Netslices@ietf.org
> https://www.ietf.org/mailman/listinfo/netslices


--Apple-Mail=_F5EE3678-F9D4-4B7A-B707-07CC1DFD9A8D
Content-Transfer-Encoding: quoted-printable
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<html><head><meta http-equiv=3D"Content-Type" content=3D"text/html =
charset=3Dutf-8"></head><body style=3D"word-wrap: break-word; =
-webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" =
class=3D"">Hi Lou, Daniele and All<div class=3D""><br =
class=3D""></div><div class=3D"">Thank you for your constructive =
comments &nbsp;and views.</div><div class=3D""><br class=3D""></div><div =
class=3D"">Please note that there are references and suggestions on how =
ACTN tenologieies could be used in part for Network Slicing in the =
following drafts:</div><div class=3D""><br class=3D""></div><div =
class=3D"">=E2=80=A2&nbsp;Network Slicing - Revised Problem =
Statement&nbsp;draft-galis-netslices-revised-problem-statement-01</div><di=
v class=3D"">=E2=80=A2&nbsp;Network Slicing =
Architecture&nbsp;draft-geng-netslices-architecture-02</div><div =
class=3D"">=E2=80=A2&nbsp;Network Slicing Use Cases: Network =
Customization and =
Differentiated&nbsp;Services&nbsp;draft-netslices-usecases-01</div><div =
class=3D""><br class=3D""></div><div class=3D"">Please also note that we =
are not proposing an&nbsp;other&nbsp;VPN++ or an other overlay to be =
defined /designed at IETF. What would be the point of =
such&nbsp;unnecessary&nbsp;proposals &nbsp;which would create at best =
yet an other&nbsp;network&nbsp;with best effort support for all =
services?</div><div class=3D""><br class=3D""></div><div class=3D"">Some =
of the requirements for NetSlicing are similar to ACTN requirements =
however they differ in the following =
key&nbsp;characterisations:</div><div class=3D"">






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<!--StartFragment--><p class=3D"MsoNormal"><span lang=3D"EN-US" =
class=3D"">=E2=80=A2 NS is mainly an in-band management concept
in support&nbsp;&nbsp;well at least one service at a given time. It is =
also coordinating/orchestrating network functions and resources. <o:p =
class=3D""></o:p></span></p><p class=3D"MsoNormal"><span lang=3D"EN-US" =
class=3D"">=E2=80=A2&nbsp;</span>NS is dynamically and non-disruptively =
reprovisioned.</p><p class=3D"MsoNormal">=E2=80=A2&nbsp;<span =
lang=3D"EN-US" class=3D"">Network slices are concurrently deployed as
multiple logical, self-contained and independent, partitioned network =
&amp; service functions
and resources (connectivity, storage and computation &nbsp;resources) a =
common physical infrastructure in
order to support well at least one service at a given time.</span></p><p =
class=3D"MsoNormal"><span lang=3D"EN-US" class=3D"">* NS has as the =
ability to dynamically expose
and possibly negotiate the parameters that characterise an network =
slice.
Network slices are configurable and programmable.<o:p =
class=3D""></o:p></span></p><p class=3D"MsoNormal"><span lang=3D"EN-US" =
class=3D"">=E2=80=A2 NS has its own operator that sees it as a
complete network infrastructure and to use part of the network resources =
to
meet stringent resource requirements.<o:p class=3D""></o:p></span></p><p =
class=3D"MsoNormal"><span lang=3D"EN-US" class=3D"">=E2=80=A2 NS is =
supporting tenant(s) that are
strongly independent on infrastructure.<o:p class=3D""></o:p></span></p><p=
 class=3D"MsoNormal"><span lang=3D"EN-US" class=3D"">=E2=80=A2 NS is =
introducing an additional layer of abstraction
by the creation of logically or physically isolated groups of network =
resources
and network function/virtual network functions configurations separating =
its
behaviour from the underlying physical network. &nbsp;</span></p><p =
class=3D"MsoNormal"><span lang=3D"EN-US" class=3D"">As such NS is not an =
overlay or an underlay (i.e. a VPN++)</span></p><div class=3D"">I hope =
that the above would be of help to you.</div><div class=3D""><br =
class=3D""></div><div class=3D"">Best Regards</div><div =
class=3D"">Alex</div><div class=3D""><br class=3D""></div>

<!--EndFragment--></div><div class=3D""><br class=3D""></div><div =
class=3D""><br class=3D""><div><blockquote type=3D"cite" class=3D""><div =
class=3D"">On 10 Jul 2017, at 14:06, Daniele Ceccarelli &lt;<a =
href=3D"mailto:daniele.ceccarelli@ericsson.com" =
class=3D"">daniele.ceccarelli@ericsson.com</a>&gt; wrote:</div><br =
class=3D"Apple-interchange-newline"><div class=3D""><div class=3D"">Hi =
all,<br class=3D""><br class=3D"">while i totally share Lou's point of =
view I'd like to add some references that might help understanding what =
is already there and possibly targeting a better gap analysis.<br =
class=3D""><br class=3D"">The 9 requirements shown in table 1 and mapped =
against 4 KEY requirements are very valuable but I struggle to see the =
difference between them and the ACTN requirements ,where we have 8 =
service-related requirements and 5 network-related requirements (<a =
href=3D"https://tools.ietf.org/html/draft-ietf-teas-actn-requirements-05" =
class=3D"">https://tools.ietf.org/html/draft-ietf-teas-actn-requirements-0=
5</a> WG document since Oct 2015).<br class=3D""><br class=3D"">When it =
comes to the solutions for those requirements Lou correctly pointed out =
at RFC 7926 (Problem Statement and Architecture for Information Exchange =
between Interconnected Traffic-Engineered Networks) and on the TEAS WG =
and PCE WG pages you can find a number of documents including framework, =
abstraction methods, info model, interfaces, applicability of PCE and =
YANG models to ACTN, telemetry. In particular I'd like to mention the =
ACTN VN, which is a construct that sees to address many of the =
requirements for the network slicing. <br class=3D""><br class=3D"">My =
analysis of the gaps is as follows (please correct what I'm missing).<br =
class=3D"">Req 1 - Network Slicing Specification: To me this looks like =
exactly an Ato be CTN Virtual Network. In section 4.1 one thing that I =
understand to be missing to the VN is the reachability scope (limited =
scope vs Internet-wide).<br class=3D"">Req 2 - Network Slicing =
Cross-Domain Coordination: This seems to be one of the MDSC =
functionalities, actually the most important.<br class=3D"">Req 3 - =
Network Slicing Performance Guarantee and Isolation: This is a target =
that can be reached via a Virtual Network, where resources can be =
dedicated to a slice or shared among slices and the computation done =
with constraints. Extensions for VN Telemetry are already available =
(even if this is at an earlier stage).<br class=3D"">Req 4 - Network =
Slicing OAM (NS-OAM). Being the VN members defined as a set of stitched =
tunnels and LSPs the OAM tools available for tunnels and LSPs are =
automatically inherited.<br class=3D""><br class=3D"">Two more detailed =
comments:<br class=3D""><br class=3D"">1. Section &nbsp;5.2.3.<br =
class=3D"">It is said that: " However, ACTN focuses on resource<br =
class=3D""> &nbsp;&nbsp;abstraction and management on Layer 2 and Layer =
1. &nbsp;For transport<br class=3D""> &nbsp;&nbsp;network slicing, =
resources abstraction and management on Layer 3+<br class=3D""> =
&nbsp;&nbsp;(e.g., IP routing table, etc.) may also be necessary but =
have not<br class=3D""> &nbsp;&nbsp;been addressed by ACTN."<br =
class=3D"">I don't know where MPLS is positioned in your analysis =
(according to some people it's layer 2, to some others it's 2.5, and =
someone believes it's layer 3), but ACTN covers any kind of TE =
technology, including MPLS-TE and SR-TE. Building a slice without TE, =
well, it can be done, but how is it possible to guarantee KPIs, SLA, and =
so on? <br class=3D""><br class=3D""><br class=3D"">2. Section 6.2.3.<br =
class=3D"">It is said that: "RSVP-TE LSPs can be used as the underlay =
tunnels<br class=3D""> &nbsp;&nbsp;of the VPN service connections. =
&nbsp;However, the requirement of some<br class=3D""> =
&nbsp;&nbsp;emerging services is not only about traffic bandwidth, but =
also has<br class=3D""> &nbsp;&nbsp;quite strict requirement on latency, =
jitter, etc. &nbsp;Such requirements<br class=3D""> &nbsp;&nbsp;can =
hardly be met with existing RSVP-TE."<br class=3D"">RSVP-TE is used to =
reserve the resource along the path meeting the required constraints. If =
such path exists, RSVP-TE can reserve it, otherwise no one can.<br =
class=3D""><br class=3D"">Hence my disagreement with the conclusions in =
Table 2.<br class=3D""><br class=3D"">Thank you<br class=3D"">Daniele =
&nbsp;<br class=3D""><br class=3D"">-----Original Message-----<br =
class=3D"">From: Netslices [<a href=3D"mailto:netslices-bounces@ietf.org" =
class=3D"">mailto:netslices-bounces@ietf.org</a>] On Behalf Of Lou =
Berger<br class=3D"">Sent: domenica 9 luglio 2017 21:08<br class=3D"">To: =
<a href=3D"mailto:netslices@ietf.org" class=3D"">netslices@ietf.org</a><br=
 class=3D"">Subject: [Netslices] Some comments on =
draft-qiang-netslices-gap-analysis<br class=3D""><br class=3D"">Hi,<br =
class=3D""><br class=3D"">With all they "excitement" on slicing I'm sure =
there is work to be done on the topic, but I think it would be good for =
such work to build on (and at worst, understand) the IETF =
technology/RFCs. &nbsp;In reading this draft, I really felt like the =
authors were not familiar with the substantive work that has been on TE =
networks over the years, notably:<br class=3D""><br class=3D"">- Section =
5.2 cross domain coordination<br class=3D""><br class=3D"">There are =
many years of work and related RFCs in this area in IETF TE that are =
missing from the 'gap analysis' . &nbsp;I suggest reading RFC7926 as a =
good primer on existing RFCs as well as some background that predates =
the current TEAS ACTN work.<br class=3D""><br class=3D"">- WRT Section =
6.2.1 and 2.3 <br class=3D""><br class=3D"">MPLS-TE solutions are =
broader than just signaling, i.e., routing is just as important. =
&nbsp;RCF7926 has sufficient pointers to good references for this. =
&nbsp;On a more specific note, this section is missing the intersection =
of VPNs and RSVP-TE and L3VPNs, see RFC 6882. &nbsp;Even more notably, =
the section is missing that TE LSPs can support the Guaranteed Quality =
of Service defined by RFC2212 (even if some vendors choose not to =
implement it), GS is defined as:<br class=3D""><br class=3D""> =
&nbsp;&nbsp;Guaranteed service provides firm (mathematically =
provable)<br class=3D""> &nbsp;&nbsp;bounds on end-to-end datagram =
queueing delays. &nbsp;This service makes it<br class=3D""> =
&nbsp;&nbsp;possible to provide a service that guarantees both delay =
and<br class=3D""> &nbsp;&nbsp;bandwidth.<br class=3D""><br class=3D"">- =
Also, separately and in the context of Section 6.2.5<br class=3D""><br =
class=3D"">I think the 1st paragraph of correctly states that DetNet is =
concerned with "low packet loss rates, low packet &nbsp;delay variation =
(jitter) and assured maximum end-to-end delivery latency." (leveraging =
existing RFCs to the maximum extent possible.) &nbsp;But much of the =
rest of the section contradicts this and I really can't seem to parse =
the 2nd paragraph in any way that makes sense in the context of detnet =
or delivering low loss, low jitter and deterministic latency.<br =
class=3D""><br class=3D"">Also, &nbsp;I suggest referencing 802.1TSN in =
the context or DetNet or independently. &nbsp;FWIW there is an 802.1 TSN =
tutorial scheduled for Sunday<br class=3D"">(1345-1445 in Congress Hall =
III) and we'll be spending some time in the DetNet WG session on =
understanding 802.1 TSN's flow requirements/capabilities and how to they =
might be leveraged (and<br class=3D"">support) by DetNet.<br =
class=3D""><br class=3D"">- finally, WRT timing<br class=3D""><br =
class=3D"">I'd think mentioned 1588 and other related time sync work in =
IETF could be relevant.<br class=3D""><br class=3D"">Lou<br class=3D""><br=
 class=3D""><br =
class=3D"">_______________________________________________<br =
class=3D"">Netslices mailing list<br class=3D""><a =
href=3D"mailto:Netslices@ietf.org" class=3D"">Netslices@ietf.org</a><br =
class=3D"">https://www.ietf.org/mailman/listinfo/netslices<br =
class=3D""><br =
class=3D"">_______________________________________________<br =
class=3D"">Netslices mailing list<br class=3D"">Netslices@ietf.org<br =
class=3D"">https://www.ietf.org/mailman/listinfo/netslices<br =
class=3D""></div></div></blockquote></div><br =
class=3D""></div></body></html>=

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Subject: Re: [Netslices] Some comments on draft-qiang-netslices-gap-analysiswe are not
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On 10/07/2017 16:34, Alex Galis wrote:
> Hi Lou, Daniele and All
>
> Thank you for your constructive comments  and views.
>
> Please note that there are references and suggestions on how ACTN 
> tenologieies could be used in part for Network Slicing in the 
> following drafts:
>
> • Network Slicing - Revised Problem 
> Statement draft-galis-netslices-revised-problem-statement-01
> • Network Slicing Architecture draft-geng-netslices-architecture-02
> • Network Slicing Use Cases: Network Customization and 
> Differentiated Services draft-netslices-usecases-01

How is that relevant to these slides, they do not talk about ACTN.

>
> Please also note that we are not proposing an other VPN++ or an other 
> overlay to be defined /designed at IETF. What would be the point of 
> such unnecessary proposals  which would create at best yet an 
> other network with best effort support for all services?

I am talking about VPN+, these new slides do not. Although the issue of 
how you instantiate your ideas in the dataplane is something I look 
forward to you explaining to us. Here I don't want a pointer to an 
obscure theoretical text. If you were asked to build a physical system 
to shift the bits in a project starting the week after IETF, how would 
you do it?

>
> Some of the requirements for NetSlicing are similar to ACTN 
> requirements however they differ in the following key characterisations:
>
> • NS is mainly an in-band management concept in support  well at least 
> one service at a given time. It is also coordinating/orchestrating 
> network functions and resources.
>

Don't you immediately hit Turing's problem with that? You need to create 
the service out of band, and you are going to have to do a lot of other 
management out of band?

> • NS is dynamically and non-disruptively reprovisioned.
>

I don't think we have said otherwise, although I don't see how you 
achieve that in a strict definition of non-disruptive. Indeed I think 
that you can prove that this is infeasible. For example if you 
reprovision a path to one with greater capacity (or less capacity to 
free up unused resources) how you avoid the latency change or packet 
misorder?

> • Network slices are concurrently deployed as multiple logical, 
> self-contained and independent, partitioned network & service 
> functions and resources (connectivity, storage and computation 
>  resources) a common physical infrastructure in order to support well 
> at least one service at a given time.
>

What does that mean in practice? I really think you need to show us data 
plane types how you achieve that.

> * NS has as the ability to dynamically expose and possibly negotiate 
> the parameters that characterise an network slice. Network slices are 
> configurable and programmable.
>

We agree, show me where the slides say otherwise?

> • NS has its own operator that sees it as a complete network 
> infrastructure and to use part of the network resources to meet 
> stringent resource requirements.
>

The devil is in the detail here which I look forward to you describing 
to the rest of us.

> • NS is supporting tenant(s) that are strongly independent on 
> infrastructure.
>
Where has anyone said otherwise?

> • NS is introducing an additional layer of abstraction by the creation 
> of logically or physically isolated groups of network resources and 
> network function/virtual network functions configurations separating 
> its behaviour from the underlying physical network.
>
I think you need to explain that to us, or at least to me a little more 
clearly. All abstractions need to resolve to the physics of the service, 
so lets understand what your statement means in practical terms.

> As such NS is not an overlay or an underlay (i.e. a VPN++)
>

OK, put your description of  the physics on the table, because I can 
guarantee you will get that question at the BOF.

> I hope that the above would be of help to you.

No, I need to understand how I actually build one of these systems, and 
in none of your work have you explained to me how you get a tenant's 
packets from A to B with the constraints you propose. So without 
reference to am obscure text please explain how we generate the the 
physical realization of one of these systems?

Best Regards

- Stewart
>
> Best Regards
> Alex
>
>
>
>> On 10 Jul 2017, at 14:06, Daniele Ceccarelli 
>> <daniele.ceccarelli@ericsson.com 
>> <mailto:daniele.ceccarelli@ericsson.com>> wrote:
>>
>> Hi all,
>>
>> while i totally share Lou's point of view I'd like to add some 
>> references that might help understanding what is already there and 
>> possibly targeting a better gap analysis.
>>
>> The 9 requirements shown in table 1 and mapped against 4 KEY 
>> requirements are very valuable but I struggle to see the difference 
>> between them and the ACTN requirements ,where we have 8 
>> service-related requirements and 5 network-related requirements 
>> (https://tools.ietf.org/html/draft-ietf-teas-actn-requirements-05 WG 
>> document since Oct 2015).
>>
>> When it comes to the solutions for those requirements Lou correctly 
>> pointed out at RFC 7926 (Problem Statement and Architecture for 
>> Information Exchange between Interconnected Traffic-Engineered 
>> Networks) and on the TEAS WG and PCE WG pages you can find a number 
>> of documents including framework, abstraction methods, info model, 
>> interfaces, applicability of PCE and YANG models to ACTN, telemetry. 
>> In particular I'd like to mention the ACTN VN, which is a construct 
>> that sees to address many of the requirements for the network slicing.
>>
>> My analysis of the gaps is as follows (please correct what I'm missing).
>> Req 1 - Network Slicing Specification: To me this looks like exactly 
>> an Ato be CTN Virtual Network. In section 4.1 one thing that I 
>> understand to be missing to the VN is the reachability scope (limited 
>> scope vs Internet-wide).
>> Req 2 - Network Slicing Cross-Domain Coordination: This seems to be 
>> one of the MDSC functionalities, actually the most important.
>> Req 3 - Network Slicing Performance Guarantee and Isolation: This is 
>> a target that can be reached via a Virtual Network, where resources 
>> can be dedicated to a slice or shared among slices and the 
>> computation done with constraints. Extensions for VN Telemetry are 
>> already available (even if this is at an earlier stage).
>> Req 4 - Network Slicing OAM (NS-OAM). Being the VN members defined as 
>> a set of stitched tunnels and LSPs the OAM tools available for 
>> tunnels and LSPs are automatically inherited.
>>
>> Two more detailed comments:
>>
>> 1. Section  5.2.3.
>> It is said that: " However, ACTN focuses on resource
>>   abstraction and management on Layer 2 and Layer 1.  For transport
>>   network slicing, resources abstraction and management on Layer 3+
>>   (e.g., IP routing table, etc.) may also be necessary but have not
>>   been addressed by ACTN."
>> I don't know where MPLS is positioned in your analysis (according to 
>> some people it's layer 2, to some others it's 2.5, and someone 
>> believes it's layer 3), but ACTN covers any kind of TE technology, 
>> including MPLS-TE and SR-TE. Building a slice without TE, well, it 
>> can be done, but how is it possible to guarantee KPIs, SLA, and so on?
>>
>>
>> 2. Section 6.2.3.
>> It is said that: "RSVP-TE LSPs can be used as the underlay tunnels
>>   of the VPN service connections.  However, the requirement of some
>>   emerging services is not only about traffic bandwidth, but also has
>>   quite strict requirement on latency, jitter, etc.  Such requirements
>>   can hardly be met with existing RSVP-TE."
>> RSVP-TE is used to reserve the resource along the path meeting the 
>> required constraints. If such path exists, RSVP-TE can reserve it, 
>> otherwise no one can.
>>
>> Hence my disagreement with the conclusions in Table 2.
>>
>> Thank you
>> Daniele
>>
>> -----Original Message-----
>> From: Netslices [mailto:netslices-bounces@ietf.org] On Behalf Of Lou 
>> Berger
>> Sent: domenica 9 luglio 2017 21:08
>> To: netslices@ietf.org <mailto:netslices@ietf.org>
>> Subject: [Netslices] Some comments on draft-qiang-netslices-gap-analysis
>>
>> Hi,
>>
>> With all they "excitement" on slicing I'm sure there is work to be 
>> done on the topic, but I think it would be good for such work to 
>> build on (and at worst, understand) the IETF technology/RFCs.  In 
>> reading this draft, I really felt like the authors were not familiar 
>> with the substantive work that has been on TE networks over the 
>> years, notably:
>>
>> - Section 5.2 cross domain coordination
>>
>> There are many years of work and related RFCs in this area in IETF TE 
>> that are missing from the 'gap analysis' .  I suggest reading RFC7926 
>> as a good primer on existing RFCs as well as some background that 
>> predates the current TEAS ACTN work.
>>
>> - WRT Section 6.2.1 and 2.3
>>
>> MPLS-TE solutions are broader than just signaling, i.e., routing is 
>> just as important.  RCF7926 has sufficient pointers to good 
>> references for this.  On a more specific note, this section is 
>> missing the intersection of VPNs and RSVP-TE and L3VPNs, see RFC 
>> 6882.  Even more notably, the section is missing that TE LSPs can 
>> support the Guaranteed Quality of Service defined by RFC2212 (even if 
>> some vendors choose not to implement it), GS is defined as:
>>
>>   Guaranteed service provides firm (mathematically provable)
>>   bounds on end-to-end datagram queueing delays.  This service makes it
>>   possible to provide a service that guarantees both delay and
>>   bandwidth.
>>
>> - Also, separately and in the context of Section 6.2.5
>>
>> I think the 1st paragraph of correctly states that DetNet is 
>> concerned with "low packet loss rates, low packet  delay variation 
>> (jitter) and assured maximum end-to-end delivery latency." 
>> (leveraging existing RFCs to the maximum extent possible.)  But much 
>> of the rest of the section contradicts this and I really can't seem 
>> to parse the 2nd paragraph in any way that makes sense in the context 
>> of detnet or delivering low loss, low jitter and deterministic latency.
>>
>> Also,  I suggest referencing 802.1TSN in the context or DetNet or 
>> independently.  FWIW there is an 802.1 TSN tutorial scheduled for Sunday
>> (1345-1445 in Congress Hall III) and we'll be spending some time in 
>> the DetNet WG session on understanding 802.1 TSN's flow 
>> requirements/capabilities and how to they might be leveraged (and
>> support) by DetNet.
>>
>> - finally, WRT timing
>>
>> I'd think mentioned 1588 and other related time sync work in IETF 
>> could be relevant.
>>
>> Lou
>>
>>
>> _______________________________________________
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>> Netslices@ietf.org <mailto:Netslices@ietf.org>
>> https://www.ietf.org/mailman/listinfo/netslices
>>
>> _______________________________________________
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>> Netslices@ietf.org
>> https://www.ietf.org/mailman/listinfo/netslices
>
>
>
> _______________________________________________
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    <br>
    <div class="moz-cite-prefix">On 10/07/2017 16:34, Alex Galis wrote:<br>
    </div>
    <blockquote type="cite"
      cite="mid:28DB5287-8FB2-459D-BACA-AAB330C2E320@ucl.ac.uk">
      <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
      Hi Lou, Daniele and All
      <div class=""><br class="">
      </div>
      <div class="">Thank you for your constructive comments  and views.</div>
      <div class=""><br class="">
      </div>
      <div class="">Please note that there are references and
        suggestions on how ACTN tenologieies could be used in part for
        Network Slicing in the following drafts:</div>
      <div class=""><br class="">
      </div>
      <div class="">• Network Slicing - Revised Problem
        Statement draft-galis-netslices-revised-problem-statement-01</div>
      <div class="">• Network Slicing
        Architecture draft-geng-netslices-architecture-02</div>
      <div class="">• Network Slicing Use Cases: Network Customization
        and Differentiated Services draft-netslices-usecases-01</div>
    </blockquote>
    <br>
    How is that relevant to these slides, they do not talk about ACTN.<br>
    <br>
    <blockquote type="cite"
      cite="mid:28DB5287-8FB2-459D-BACA-AAB330C2E320@ucl.ac.uk">
      <div class=""><br class="">
      </div>
      <div class="">Please also note that we are not proposing
        an other VPN++ or an other overlay to be defined /designed at
        IETF. What would be the point of such unnecessary proposals
         which would create at best yet an other network with best
        effort support for all services?</div>
    </blockquote>
    <br>
    I am talking about VPN+, these new slides do not. Although the issue
    of how you instantiate your ideas in the dataplane is something I
    look forward to you explaining to us. Here I don't want a pointer to
    an obscure theoretical text. If you were asked to build a physical
    system to shift the bits in a project starting the week after IETF,
    how would you do it?<br>
    <br>
    <blockquote type="cite"
      cite="mid:28DB5287-8FB2-459D-BACA-AAB330C2E320@ucl.ac.uk">
      <div class=""><br class="">
      </div>
      <div class="">Some of the requirements for NetSlicing are similar
        to ACTN requirements however they differ in the following
        key characterisations:</div>
      <div class="">
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        <!--StartFragment-->
        <p class="MsoNormal"><span class="" lang="EN-US">• NS is mainly
            an in-band management concept
            in support  well at least one service at a given time. It is
            also coordinating/orchestrating network functions and
            resources. </span></p>
      </div>
    </blockquote>
    <br>
    Don't you immediately hit Turing's problem with that? You need to
    create the service out of band, and you are going to have to do a
    lot of other management out of band?<br>
    <br>
    <blockquote type="cite"
      cite="mid:28DB5287-8FB2-459D-BACA-AAB330C2E320@ucl.ac.uk">
      <div class="">
        <p class="MsoNormal"><span class="" lang="EN-US"><o:p class=""></o:p></span></p>
        <p class="MsoNormal"><span class="" lang="EN-US">• </span>NS is
          dynamically and non-disruptively reprovisioned.</p>
      </div>
    </blockquote>
    <br>
    I don't think we have said otherwise, although I don't see how you
    achieve that in a strict definition of non-disruptive. Indeed I
    think that you can prove that this is infeasible. For example if you
    reprovision a path to one with greater capacity (or less capacity to
    free up unused resources) how you avoid the latency change or packet
    misorder?<br>
    <br>
    <blockquote type="cite"
      cite="mid:28DB5287-8FB2-459D-BACA-AAB330C2E320@ucl.ac.uk">
      <div class="">
        <p class="MsoNormal">• <span class="" lang="EN-US">Network
            slices are concurrently deployed as
            multiple logical, self-contained and independent,
            partitioned network &amp; service functions
            and resources (connectivity, storage and computation
             resources) a common physical infrastructure in
            order to support well at least one service at a given time.</span></p>
      </div>
    </blockquote>
    <br>
    What does that mean in practice? I really think you need to show us
    data plane types how you achieve that.<br>
    <br>
    <blockquote type="cite"
      cite="mid:28DB5287-8FB2-459D-BACA-AAB330C2E320@ucl.ac.uk">
      <div class="">
        <p class="MsoNormal"><span class="" lang="EN-US">* NS has as the
            ability to dynamically expose
            and possibly negotiate the parameters that characterise an
            network slice.
            Network slices are configurable and programmable.</span></p>
      </div>
    </blockquote>
    <br>
    We agree, show me where the slides say otherwise?<br>
    <br>
    <blockquote type="cite"
      cite="mid:28DB5287-8FB2-459D-BACA-AAB330C2E320@ucl.ac.uk">
      <div class="">
        <p class="MsoNormal"><span class="" lang="EN-US"><o:p class=""></o:p></span></p>
        <p class="MsoNormal"><span class="" lang="EN-US">• NS has its
            own operator that sees it as a
            complete network infrastructure and to use part of the
            network resources to
            meet stringent resource requirements.</span></p>
      </div>
    </blockquote>
    <br>
    The devil is in the detail here which I look forward to you
    describing to the rest of us.<br>
    <br>
    <blockquote type="cite"
      cite="mid:28DB5287-8FB2-459D-BACA-AAB330C2E320@ucl.ac.uk">
      <div class="">
        <p class="MsoNormal"><span class="" lang="EN-US"><o:p class=""></o:p></span></p>
        <p class="MsoNormal"><span class="" lang="EN-US">• NS is
            supporting tenant(s) that are
            strongly independent on infrastructure.</span></p>
      </div>
    </blockquote>
    Where has anyone said otherwise?<br>
    <br>
    <blockquote type="cite"
      cite="mid:28DB5287-8FB2-459D-BACA-AAB330C2E320@ucl.ac.uk">
      <div class="">
        <p class="MsoNormal"><span class="" lang="EN-US"><o:p class=""></o:p></span></p>
        <p class="MsoNormal"><span class="" lang="EN-US">• NS is
            introducing an additional layer of abstraction
            by the creation of logically or physically isolated groups
            of network resources
            and network function/virtual network functions
            configurations separating its
            behaviour from the underlying physical network.  <br>
          </span></p>
      </div>
    </blockquote>
    I think you need to explain that to us, or at least to me a little
    more clearly. All abstractions need to resolve to the physics of the
    service, so lets understand what your statement means in practical
    terms.<br>
    <br>
    <blockquote type="cite"
      cite="mid:28DB5287-8FB2-459D-BACA-AAB330C2E320@ucl.ac.uk">
      <div class="">
        <p class="MsoNormal"><span class="" lang="EN-US">As such NS is
            not an overlay or an underlay (i.e. a VPN++)</span></p>
      </div>
    </blockquote>
    <br>
    OK, put your description of  the physics on the table, because I can
    guarantee you will get that question at the BOF.<br>
    <br>
    <blockquote type="cite"
      cite="mid:28DB5287-8FB2-459D-BACA-AAB330C2E320@ucl.ac.uk">
      <div class="">
        <div class="">I hope that the above would be of help to you.</div>
      </div>
    </blockquote>
    <br>
    No, I need to understand how I actually build one of these systems,
    and in none of your work have you explained to me how you get a
    tenant's packets from A to B with the constraints you propose. So
    without reference to am obscure text please explain how we generate
    the the physical realization of one of these systems?<br>
    <br>
    Best Regards<br>
    <br>
    - Stewart<br>
    <blockquote type="cite"
      cite="mid:28DB5287-8FB2-459D-BACA-AAB330C2E320@ucl.ac.uk">
      <div class="">
        <div class=""><br class="">
        </div>
        <div class="">Best Regards</div>
        <div class="">Alex</div>
        <div class=""><br class="">
        </div>
        <!--EndFragment--></div>
      <div class=""><br class="">
      </div>
      <div class=""><br class="">
        <div>
          <blockquote type="cite" class="">
            <div class="">On 10 Jul 2017, at 14:06, Daniele Ceccarelli
              &lt;<a href="mailto:daniele.ceccarelli@ericsson.com"
                class="" moz-do-not-send="true">daniele.ceccarelli@ericsson.com</a>&gt;
              wrote:</div>
            <br class="Apple-interchange-newline">
            <div class="">
              <div class="">Hi all,<br class="">
                <br class="">
                while i totally share Lou's point of view I'd like to
                add some references that might help understanding what
                is already there and possibly targeting a better gap
                analysis.<br class="">
                <br class="">
                The 9 requirements shown in table 1 and mapped against 4
                KEY requirements are very valuable but I struggle to see
                the difference between them and the ACTN requirements
                ,where we have 8 service-related requirements and 5
                network-related requirements (<a
                  href="https://tools.ietf.org/html/draft-ietf-teas-actn-requirements-05"
                  class="" moz-do-not-send="true">https://tools.ietf.org/html/draft-ietf-teas-actn-requirements-05</a>
                WG document since Oct 2015).<br class="">
                <br class="">
                When it comes to the solutions for those requirements
                Lou correctly pointed out at RFC 7926 (Problem Statement
                and Architecture for Information Exchange between
                Interconnected Traffic-Engineered Networks) and on the
                TEAS WG and PCE WG pages you can find a number of
                documents including framework, abstraction methods, info
                model, interfaces, applicability of PCE and YANG models
                to ACTN, telemetry. In particular I'd like to mention
                the ACTN VN, which is a construct that sees to address
                many of the requirements for the network slicing. <br
                  class="">
                <br class="">
                My analysis of the gaps is as follows (please correct
                what I'm missing).<br class="">
                Req 1 - Network Slicing Specification: To me this looks
                like exactly an Ato be CTN Virtual Network. In section
                4.1 one thing that I understand to be missing to the VN
                is the reachability scope (limited scope vs
                Internet-wide).<br class="">
                Req 2 - Network Slicing Cross-Domain Coordination: This
                seems to be one of the MDSC functionalities, actually
                the most important.<br class="">
                Req 3 - Network Slicing Performance Guarantee and
                Isolation: This is a target that can be reached via a
                Virtual Network, where resources can be dedicated to a
                slice or shared among slices and the computation done
                with constraints. Extensions for VN Telemetry are
                already available (even if this is at an earlier stage).<br
                  class="">
                Req 4 - Network Slicing OAM (NS-OAM). Being the VN
                members defined as a set of stitched tunnels and LSPs
                the OAM tools available for tunnels and LSPs are
                automatically inherited.<br class="">
                <br class="">
                Two more detailed comments:<br class="">
                <br class="">
                1. Section  5.2.3.<br class="">
                It is said that: " However, ACTN focuses on resource<br
                  class="">
                  abstraction and management on Layer 2 and Layer 1.
                 For transport<br class="">
                  network slicing, resources abstraction and management
                on Layer 3+<br class="">
                  (e.g., IP routing table, etc.) may also be necessary
                but have not<br class="">
                  been addressed by ACTN."<br class="">
                I don't know where MPLS is positioned in your analysis
                (according to some people it's layer 2, to some others
                it's 2.5, and someone believes it's layer 3), but ACTN
                covers any kind of TE technology, including MPLS-TE and
                SR-TE. Building a slice without TE, well, it can be
                done, but how is it possible to guarantee KPIs, SLA, and
                so on? <br class="">
                <br class="">
                <br class="">
                2. Section 6.2.3.<br class="">
                It is said that: "RSVP-TE LSPs can be used as the
                underlay tunnels<br class="">
                  of the VPN service connections.  However, the
                requirement of some<br class="">
                  emerging services is not only about traffic bandwidth,
                but also has<br class="">
                  quite strict requirement on latency, jitter, etc.
                 Such requirements<br class="">
                  can hardly be met with existing RSVP-TE."<br class="">
                RSVP-TE is used to reserve the resource along the path
                meeting the required constraints. If such path exists,
                RSVP-TE can reserve it, otherwise no one can.<br
                  class="">
                <br class="">
                Hence my disagreement with the conclusions in Table 2.<br
                  class="">
                <br class="">
                Thank you<br class="">
                Daniele  <br class="">
                <br class="">
                -----Original Message-----<br class="">
                From: Netslices [<a
                  href="mailto:netslices-bounces@ietf.org" class=""
                  moz-do-not-send="true">mailto:netslices-bounces@ietf.org</a>]
                On Behalf Of Lou Berger<br class="">
                Sent: domenica 9 luglio 2017 21:08<br class="">
                To: <a href="mailto:netslices@ietf.org" class=""
                  moz-do-not-send="true">netslices@ietf.org</a><br
                  class="">
                Subject: [Netslices] Some comments on
                draft-qiang-netslices-gap-analysis<br class="">
                <br class="">
                Hi,<br class="">
                <br class="">
                With all they "excitement" on slicing I'm sure there is
                work to be done on the topic, but I think it would be
                good for such work to build on (and at worst,
                understand) the IETF technology/RFCs.  In reading this
                draft, I really felt like the authors were not familiar
                with the substantive work that has been on TE networks
                over the years, notably:<br class="">
                <br class="">
                - Section 5.2 cross domain coordination<br class="">
                <br class="">
                There are many years of work and related RFCs in this
                area in IETF TE that are missing from the 'gap analysis'
                .  I suggest reading RFC7926 as a good primer on
                existing RFCs as well as some background that predates
                the current TEAS ACTN work.<br class="">
                <br class="">
                - WRT Section 6.2.1 and 2.3 <br class="">
                <br class="">
                MPLS-TE solutions are broader than just signaling, i.e.,
                routing is just as important.  RCF7926 has sufficient
                pointers to good references for this.  On a more
                specific note, this section is missing the intersection
                of VPNs and RSVP-TE and L3VPNs, see RFC 6882.  Even more
                notably, the section is missing that TE LSPs can support
                the Guaranteed Quality of Service defined by RFC2212
                (even if some vendors choose not to implement it), GS is
                defined as:<br class="">
                <br class="">
                  Guaranteed service provides firm (mathematically
                provable)<br class="">
                  bounds on end-to-end datagram queueing delays.  This
                service makes it<br class="">
                  possible to provide a service that guarantees both
                delay and<br class="">
                  bandwidth.<br class="">
                <br class="">
                - Also, separately and in the context of Section 6.2.5<br
                  class="">
                <br class="">
                I think the 1st paragraph of correctly states that
                DetNet is concerned with "low packet loss rates, low
                packet  delay variation (jitter) and assured maximum
                end-to-end delivery latency." (leveraging existing RFCs
                to the maximum extent possible.)  But much of the rest
                of the section contradicts this and I really can't seem
                to parse the 2nd paragraph in any way that makes sense
                in the context of detnet or delivering low loss, low
                jitter and deterministic latency.<br class="">
                <br class="">
                Also,  I suggest referencing 802.1TSN in the context or
                DetNet or independently.  FWIW there is an 802.1 TSN
                tutorial scheduled for Sunday<br class="">
                (1345-1445 in Congress Hall III) and we'll be spending
                some time in the DetNet WG session on understanding
                802.1 TSN's flow requirements/capabilities and how to
                they might be leveraged (and<br class="">
                support) by DetNet.<br class="">
                <br class="">
                - finally, WRT timing<br class="">
                <br class="">
                I'd think mentioned 1588 and other related time sync
                work in IETF could be relevant.<br class="">
                <br class="">
                Lou<br class="">
                <br class="">
                <br class="">
                _______________________________________________<br
                  class="">
                Netslices mailing list<br class="">
                <a href="mailto:Netslices@ietf.org" class=""
                  moz-do-not-send="true">Netslices@ietf.org</a><br
                  class="">
                <a class="moz-txt-link-freetext" href="https://www.ietf.org/mailman/listinfo/netslices">https://www.ietf.org/mailman/listinfo/netslices</a><br
                  class="">
                <br class="">
                _______________________________________________<br
                  class="">
                Netslices mailing list<br class="">
                <a class="moz-txt-link-abbreviated" href="mailto:Netslices@ietf.org">Netslices@ietf.org</a><br class="">
                <a class="moz-txt-link-freetext" href="https://www.ietf.org/mailman/listinfo/netslices">https://www.ietf.org/mailman/listinfo/netslices</a><br
                  class="">
              </div>
            </div>
          </blockquote>
        </div>
        <br class="">
      </div>
      <br>
      <fieldset class="mimeAttachmentHeader"></fieldset>
      <br>
      <pre wrap="">_______________________________________________
Netslices mailing list
<a class="moz-txt-link-abbreviated" href="mailto:Netslices@ietf.org">Netslices@ietf.org</a>
<a class="moz-txt-link-freetext" href="https://www.ietf.org/mailman/listinfo/netslices">https://www.ietf.org/mailman/listinfo/netslices</a>
</pre>
    </blockquote>
    <br>
  </body>
</html>

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To: Alex Galis <a.galis@ucl.ac.uk>, Daniele Ceccarelli <daniele.ceccarelli@ericsson.com>
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References: <abda1f7d-a27c-7324-bcea-ad66b9fcf0d8@labn.net> <AM2PR07MB0994ECC43A1791AABAF8BE5CF0A90@AM2PR07MB0994.eurprd07.prod.outlook.com> <28DB5287-8FB2-459D-BACA-AAB330C2E320@ucl.ac.uk>
From: Lou Berger <lberger@labn.net>
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Subject: Re: [Netslices] Some comments on draft-qiang-netslices-gap-analysiswe are not
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On 7/10/2017 11:34 AM, Alex Galis wrote:
> Please note that there are references and suggestions on how ACTN
> tenologieies could be used in part for Network Slicing in the
> following drafts:
>

Umm, ACTN was not really the main subject of my email.  It was more
about the full breadth of IETF TE technologies (of which ACTN is a
recent addition), the existence of Guaranteed Service (RFC2212) and
scope of DetNet...

Lou


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To: Stewart Bryant <stewart.bryant@gmail.com>, Alex Galis <a.galis@ucl.ac.uk>, Daniele Ceccarelli <daniele.ceccarelli@ericsson.com>
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From: Lou Berger <lberger@labn.net>
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Subject: Re: [Netslices] Some comments on draft-qiang-netslices-gap-analysiswe are not
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Stewart,

    Your mail is a bit hard to follow as it seems that you are
disagreeing with Alex's comments but attributing them to Daniel.

It seems you are really just trying to understand data plane details,
and I suspect you are more interested in traffic handling vs marking. Is
this correct?  If so, I suggest starting with RFC2112 for the IETF
definition of a bonded delay and bandwidth service and to see where
detnet headed see 802.1 TSN (http://www.ieee802.org/1/ -- there is even
802.1CM - Time-Sensitive Networking for Fronthaul). 

If you're interested in marking, existing TE solutions are MPLS based
(control can be whatever you'd like) and DetNet is currently planning
MPLS+PWs and IPv6.

Lou

PS In case you missed it: There is an 802.1 TSN tutorial scheduled for
Sunday
(1345-1445 in Congress Hall III) and we'll be spending some time in the
DetNet WG session on understanding 802.1 TSN's flow
requirements/capabilities and how to they might be leveraged (and
support) by DetNet.

On 7/10/2017 12:08 PM, Stewart Bryant wrote:
>
>
>
> On 10/07/2017 16:34, Alex Galis wrote:
>> Hi Lou, Daniele and All
>>
>> Thank you for your constructive comments  and views.
>>
>> Please note that there are references and suggestions on how ACTN
>> tenologieies could be used in part for Network Slicing in the
>> following drafts:
>>
>> • Network Slicing - Revised Problem
>> Statement draft-galis-netslices-revised-problem-statement-01
>> • Network Slicing Architecture draft-geng-netslices-architecture-02
>> • Network Slicing Use Cases: Network Customization and
>> Differentiated Services draft-netslices-usecases-01
>
> How is that relevant to these slides, they do not talk about ACTN.
>
>>
>> Please also note that we are not proposing an other VPN++ or an other
>> overlay to be defined /designed at IETF. What would be the point of
>> such unnecessary proposals  which would create at best yet an
>> other network with best effort support for all services?
>
> I am talking about VPN+, these new slides do not. Although the issue
> of how you instantiate your ideas in the dataplane is something I look
> forward to you explaining to us. Here I don't want a pointer to an
> obscure theoretical text. If you were asked to build a physical system
> to shift the bits in a project starting the week after IETF, how would
> you do it?
>
>>
>> Some of the requirements for NetSlicing are similar to ACTN
>> requirements however they differ in the following key characterisations:
>>
>> • NS is mainly an in-band management concept in support  well at
>> least one service at a given time. It is also
>> coordinating/orchestrating network functions and resources.
>>
>
> Don't you immediately hit Turing's problem with that? You need to
> create the service out of band, and you are going to have to do a lot
> of other management out of band?
>
>> • NS is dynamically and non-disruptively reprovisioned.
>>
>
> I don't think we have said otherwise, although I don't see how you
> achieve that in a strict definition of non-disruptive. Indeed I think
> that you can prove that this is infeasible. For example if you
> reprovision a path to one with greater capacity (or less capacity to
> free up unused resources) how you avoid the latency change or packet
> misorder?
>
>> • Network slices are concurrently deployed as multiple logical,
>> self-contained and independent, partitioned network & service
>> functions and resources (connectivity, storage and computation
>>  resources) a common physical infrastructure in order to support well
>> at least one service at a given time.
>>
>
> What does that mean in practice? I really think you need to show us
> data plane types how you achieve that.
>
>> * NS has as the ability to dynamically expose and possibly negotiate
>> the parameters that characterise an network slice. Network slices are
>> configurable and programmable.
>>
>
> We agree, show me where the slides say otherwise?
>
>> • NS has its own operator that sees it as a complete network
>> infrastructure and to use part of the network resources to meet
>> stringent resource requirements.
>>
>
> The devil is in the detail here which I look forward to you describing
> to the rest of us.
>
>> • NS is supporting tenant(s) that are strongly independent on
>> infrastructure.
>>
> Where has anyone said otherwise?
>
>> • NS is introducing an additional layer of abstraction by the
>> creation of logically or physically isolated groups of network
>> resources and network function/virtual network functions
>> configurations separating its behaviour from the underlying physical
>> network. 
>>
> I think you need to explain that to us, or at least to me a little
> more clearly. All abstractions need to resolve to the physics of the
> service, so lets understand what your statement means in practical terms.
>
>> As such NS is not an overlay or an underlay (i.e. a VPN++)
>>
>
> OK, put your description of  the physics on the table, because I can
> guarantee you will get that question at the BOF.
>
>> I hope that the above would be of help to you.
>
> No, I need to understand how I actually build one of these systems,
> and in none of your work have you explained to me how you get a
> tenant's packets from A to B with the constraints you propose. So
> without reference to am obscure text please explain how we generate
> the the physical realization of one of these systems?
>
> Best Regards
>
> - Stewart
>>
>> Best Regards
>> Alex
>>
>>
>>
>>> On 10 Jul 2017, at 14:06, Daniele Ceccarelli
>>> <daniele.ceccarelli@ericsson.com
>>> <mailto:daniele.ceccarelli@ericsson.com>> wrote:
>>>
>>> Hi all,
>>>
>>> while i totally share Lou's point of view I'd like to add some
>>> references that might help understanding what is already there and
>>> possibly targeting a better gap analysis.
>>>
>>> The 9 requirements shown in table 1 and mapped against 4 KEY
>>> requirements are very valuable but I struggle to see the difference
>>> between them and the ACTN requirements ,where we have 8
>>> service-related requirements and 5 network-related requirements
>>> (https://tools.ietf.org/html/draft-ietf-teas-actn-requirements-05 WG
>>> document since Oct 2015).
>>>
>>> When it comes to the solutions for those requirements Lou correctly
>>> pointed out at RFC 7926 (Problem Statement and Architecture for
>>> Information Exchange between Interconnected Traffic-Engineered
>>> Networks) and on the TEAS WG and PCE WG pages you can find a number
>>> of documents including framework, abstraction methods, info model,
>>> interfaces, applicability of PCE and YANG models to ACTN, telemetry.
>>> In particular I'd like to mention the ACTN VN, which is a construct
>>> that sees to address many of the requirements for the network slicing.
>>>
>>> My analysis of the gaps is as follows (please correct what I'm missing).
>>> Req 1 - Network Slicing Specification: To me this looks like exactly
>>> an Ato be CTN Virtual Network. In section 4.1 one thing that I
>>> understand to be missing to the VN is the reachability scope
>>> (limited scope vs Internet-wide).
>>> Req 2 - Network Slicing Cross-Domain Coordination: This seems to be
>>> one of the MDSC functionalities, actually the most important.
>>> Req 3 - Network Slicing Performance Guarantee and Isolation: This is
>>> a target that can be reached via a Virtual Network, where resources
>>> can be dedicated to a slice or shared among slices and the
>>> computation done with constraints. Extensions for VN Telemetry are
>>> already available (even if this is at an earlier stage).
>>> Req 4 - Network Slicing OAM (NS-OAM). Being the VN members defined
>>> as a set of stitched tunnels and LSPs the OAM tools available for
>>> tunnels and LSPs are automatically inherited.
>>>
>>> Two more detailed comments:
>>>
>>> 1. Section  5.2.3.
>>> It is said that: " However, ACTN focuses on resource
>>>   abstraction and management on Layer 2 and Layer 1.  For transport
>>>   network slicing, resources abstraction and management on Layer 3+
>>>   (e.g., IP routing table, etc.) may also be necessary but have not
>>>   been addressed by ACTN."
>>> I don't know where MPLS is positioned in your analysis (according to
>>> some people it's layer 2, to some others it's 2.5, and someone
>>> believes it's layer 3), but ACTN covers any kind of TE technology,
>>> including MPLS-TE and SR-TE. Building a slice without TE, well, it
>>> can be done, but how is it possible to guarantee KPIs, SLA, and so on?
>>>
>>>
>>> 2. Section 6.2.3.
>>> It is said that: "RSVP-TE LSPs can be used as the underlay tunnels
>>>   of the VPN service connections.  However, the requirement of some
>>>   emerging services is not only about traffic bandwidth, but also has
>>>   quite strict requirement on latency, jitter, etc.  Such requirements
>>>   can hardly be met with existing RSVP-TE."
>>> RSVP-TE is used to reserve the resource along the path meeting the
>>> required constraints. If such path exists, RSVP-TE can reserve it,
>>> otherwise no one can.
>>>
>>> Hence my disagreement with the conclusions in Table 2.
>>>
>>> Thank you
>>> Daniele  
>>>
>>> -----Original Message-----
>>> From: Netslices [mailto:netslices-bounces@ietf.org] On Behalf Of Lou
>>> Berger
>>> Sent: domenica 9 luglio 2017 21:08
>>> To: netslices@ietf.org <mailto:netslices@ietf.org>
>>> Subject: [Netslices] Some comments on draft-qiang-netslices-gap-analysis
>>>
>>> Hi,
>>>
>>> With all they "excitement" on slicing I'm sure there is work to be
>>> done on the topic, but I think it would be good for such work to
>>> build on (and at worst, understand) the IETF technology/RFCs.  In
>>> reading this draft, I really felt like the authors were not familiar
>>> with the substantive work that has been on TE networks over the
>>> years, notably:
>>>
>>> - Section 5.2 cross domain coordination
>>>
>>> There are many years of work and related RFCs in this area in IETF
>>> TE that are missing from the 'gap analysis' .  I suggest reading
>>> RFC7926 as a good primer on existing RFCs as well as some background
>>> that predates the current TEAS ACTN work.
>>>
>>> - WRT Section 6.2.1 and 2.3
>>>
>>> MPLS-TE solutions are broader than just signaling, i.e., routing is
>>> just as important.  RCF7926 has sufficient pointers to good
>>> references for this.  On a more specific note, this section is
>>> missing the intersection of VPNs and RSVP-TE and L3VPNs, see RFC
>>> 6882.  Even more notably, the section is missing that TE LSPs can
>>> support the Guaranteed Quality of Service defined by RFC2212 (even
>>> if some vendors choose not to implement it), GS is defined as:
>>>
>>>   Guaranteed service provides firm (mathematically provable)
>>>   bounds on end-to-end datagram queueing delays.  This service makes it
>>>   possible to provide a service that guarantees both delay and
>>>   bandwidth.
>>>
>>> - Also, separately and in the context of Section 6.2.5
>>>
>>> I think the 1st paragraph of correctly states that DetNet is
>>> concerned with "low packet loss rates, low packet  delay variation
>>> (jitter) and assured maximum end-to-end delivery latency."
>>> (leveraging existing RFCs to the maximum extent possible.)  But much
>>> of the rest of the section contradicts this and I really can't seem
>>> to parse the 2nd paragraph in any way that makes sense in the
>>> context of detnet or delivering low loss, low jitter and
>>> deterministic latency.
>>>
>>> Also,  I suggest referencing 802.1TSN in the context or DetNet or
>>> independently.  FWIW there is an 802.1 TSN tutorial scheduled for Sunday
>>> (1345-1445 in Congress Hall III) and we'll be spending some time in
>>> the DetNet WG session on understanding 802.1 TSN's flow
>>> requirements/capabilities and how to they might be leveraged (and
>>> support) by DetNet.
>>>
>>> - finally, WRT timing
>>>
>>> I'd think mentioned 1588 and other related time sync work in IETF
>>> could be relevant.
>>>
>>> Lou
>>>
>>>
>>> _______________________________________________
>>> Netslices mailing list
>>> Netslices@ietf.org <mailto:Netslices@ietf.org>
>>> https://www.ietf.org/mailman/listinfo/netslices
>>>
>>> _______________________________________________
>>> Netslices mailing list
>>> Netslices@ietf.org
>>> https://www.ietf.org/mailman/listinfo/netslices
>>
>>
>>
>> _______________________________________________
>> Netslices mailing list
>> Netslices@ietf.org
>> https://www.ietf.org/mailman/listinfo/netslices
>
>
>
> This body part will be downloaded on demand.


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To: Lou Berger <lberger@labn.net>, Alex Galis <a.galis@ucl.ac.uk>, Daniele Ceccarelli <daniele.ceccarelli@ericsson.com>
Cc: "netslices@ietf.org" <netslices@ietf.org>
References: <abda1f7d-a27c-7324-bcea-ad66b9fcf0d8@labn.net> <AM2PR07MB0994ECC43A1791AABAF8BE5CF0A90@AM2PR07MB0994.eurprd07.prod.outlook.com> <28DB5287-8FB2-459D-BACA-AAB330C2E320@ucl.ac.uk> <f1f27ead-4c40-2315-0927-f5279a6cc0e2@gmail.com> <8f1cfab0-5e2a-8d6d-6812-9fcf079ecf4a@labn.net>
From: Stewart Bryant <stewart.bryant@gmail.com>
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Date: Mon, 10 Jul 2017 19:49:24 +0100
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Archived-At: <https://mailarchive.ietf.org/arch/msg/netslices/Z_1rgq7PilcVSzZrjDEM_Rk8Bgc>
Subject: Re: [Netslices] Some comments on draft-qiang-netslices-gap-analysiswe are not
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Hi Lou,

Ah yes, you should be confused, I was confused and mixed up two threads!

What I have been looking at is a tighter integration between the 
customer layer and the service underlay to understand how to deliver the 
packets properly.

I did take a quick look at RFC2212 and this tells us something of how to 
specify performance guarantees, but seems to assume nothing more 
sophisticated than policing and WFQ. I am not sure that this is enough.

I will not arrive in time for the 802 presentation, but I seem to 
remember attending one in the past where the focus was more on what 
documents there were than n how it worked and why it looked like it does.

My interest with this is bottom up: how to get the bits across the 
network with the right characteristics. I don't think it matters much 
what the various abstraction layers look like unless the lower layers 
can physically deliver the tenants' bits across the network with the 
right characteristics. Of course we do need the upper layers to 
interface with the system dynamically collecting user requirements and 
then talk the network layer into delivering the bits, but that is a 
problem that I hope that others more qualified will consider, and for 
the moment I have no opinion on them.

- Stewart



On 10/07/2017 18:11, Lou Berger wrote:
> Stewart,
>
>      Your mail is a bit hard to follow as it seems that you are
> disagreeing with Alex's comments but attributing them to Daniel.
>
> It seems you are really just trying to understand data plane details,
> and I suspect you are more interested in traffic handling vs marking. Is
> this correct?  If so, I suggest starting with RFC2112 for the IETF
> definition of a bonded delay and bandwidth service and to see where
> detnet headed see 802.1 TSN (http://www.ieee802.org/1/ -- there is even
> 802.1CM - Time-Sensitive Networking for Fronthaul).
>
> If you're interested in marking, existing TE solutions are MPLS based
> (control can be whatever you'd like) and DetNet is currently planning
> MPLS+PWs and IPv6.
>
> Lou
>
> PS In case you missed it: There is an 802.1 TSN tutorial scheduled for
> Sunday
> (1345-1445 in Congress Hall III) and we'll be spending some time in the
> DetNet WG session on understanding 802.1 TSN's flow
> requirements/capabilities and how to they might be leveraged (and
> support) by DetNet.
>
> On 7/10/2017 12:08 PM, Stewart Bryant wrote:
>>
>>
>> On 10/07/2017 16:34, Alex Galis wrote:
>>> Hi Lou, Daniele and All
>>>
>>> Thank you for your constructive comments  and views.
>>>
>>> Please note that there are references and suggestions on how ACTN
>>> tenologieies could be used in part for Network Slicing in the
>>> following drafts:
>>>
>>> • Network Slicing - Revised Problem
>>> Statement draft-galis-netslices-revised-problem-statement-01
>>> • Network Slicing Architecture draft-geng-netslices-architecture-02
>>> • Network Slicing Use Cases: Network Customization and
>>> Differentiated Services draft-netslices-usecases-01
>> How is that relevant to these slides, they do not talk about ACTN.
>>
>>> Please also note that we are not proposing an other VPN++ or an other
>>> overlay to be defined /designed at IETF. What would be the point of
>>> such unnecessary proposals  which would create at best yet an
>>> other network with best effort support for all services?
>> I am talking about VPN+, these new slides do not. Although the issue
>> of how you instantiate your ideas in the dataplane is something I look
>> forward to you explaining to us. Here I don't want a pointer to an
>> obscure theoretical text. If you were asked to build a physical system
>> to shift the bits in a project starting the week after IETF, how would
>> you do it?
>>
>>> Some of the requirements for NetSlicing are similar to ACTN
>>> requirements however they differ in the following key characterisations:
>>>
>>> • NS is mainly an in-band management concept in support  well at
>>> least one service at a given time. It is also
>>> coordinating/orchestrating network functions and resources.
>>>
>> Don't you immediately hit Turing's problem with that? You need to
>> create the service out of band, and you are going to have to do a lot
>> of other management out of band?
>>
>>> • NS is dynamically and non-disruptively reprovisioned.
>>>
>> I don't think we have said otherwise, although I don't see how you
>> achieve that in a strict definition of non-disruptive. Indeed I think
>> that you can prove that this is infeasible. For example if you
>> reprovision a path to one with greater capacity (or less capacity to
>> free up unused resources) how you avoid the latency change or packet
>> misorder?
>>
>>> • Network slices are concurrently deployed as multiple logical,
>>> self-contained and independent, partitioned network & service
>>> functions and resources (connectivity, storage and computation
>>>   resources) a common physical infrastructure in order to support well
>>> at least one service at a given time.
>>>
>> What does that mean in practice? I really think you need to show us
>> data plane types how you achieve that.
>>
>>> * NS has as the ability to dynamically expose and possibly negotiate
>>> the parameters that characterise an network slice. Network slices are
>>> configurable and programmable.
>>>
>> We agree, show me where the slides say otherwise?
>>
>>> • NS has its own operator that sees it as a complete network
>>> infrastructure and to use part of the network resources to meet
>>> stringent resource requirements.
>>>
>> The devil is in the detail here which I look forward to you describing
>> to the rest of us.
>>
>>> • NS is supporting tenant(s) that are strongly independent on
>>> infrastructure.
>>>
>> Where has anyone said otherwise?
>>
>>> • NS is introducing an additional layer of abstraction by the
>>> creation of logically or physically isolated groups of network
>>> resources and network function/virtual network functions
>>> configurations separating its behaviour from the underlying physical
>>> network.
>>>
>> I think you need to explain that to us, or at least to me a little
>> more clearly. All abstractions need to resolve to the physics of the
>> service, so lets understand what your statement means in practical terms.
>>
>>> As such NS is not an overlay or an underlay (i.e. a VPN++)
>>>
>> OK, put your description of  the physics on the table, because I can
>> guarantee you will get that question at the BOF.
>>
>>> I hope that the above would be of help to you.
>> No, I need to understand how I actually build one of these systems,
>> and in none of your work have you explained to me how you get a
>> tenant's packets from A to B with the constraints you propose. So
>> without reference to am obscure text please explain how we generate
>> the the physical realization of one of these systems?
>>
>> Best Regards
>>
>> - Stewart
>>> Best Regards
>>> Alex
>>>
>>>
>>>
>>>> On 10 Jul 2017, at 14:06, Daniele Ceccarelli
>>>> <daniele.ceccarelli@ericsson.com
>>>> <mailto:daniele.ceccarelli@ericsson.com>> wrote:
>>>>
>>>> Hi all,
>>>>
>>>> while i totally share Lou's point of view I'd like to add some
>>>> references that might help understanding what is already there and
>>>> possibly targeting a better gap analysis.
>>>>
>>>> The 9 requirements shown in table 1 and mapped against 4 KEY
>>>> requirements are very valuable but I struggle to see the difference
>>>> between them and the ACTN requirements ,where we have 8
>>>> service-related requirements and 5 network-related requirements
>>>> (https://tools.ietf.org/html/draft-ietf-teas-actn-requirements-05 WG
>>>> document since Oct 2015).
>>>>
>>>> When it comes to the solutions for those requirements Lou correctly
>>>> pointed out at RFC 7926 (Problem Statement and Architecture for
>>>> Information Exchange between Interconnected Traffic-Engineered
>>>> Networks) and on the TEAS WG and PCE WG pages you can find a number
>>>> of documents including framework, abstraction methods, info model,
>>>> interfaces, applicability of PCE and YANG models to ACTN, telemetry.
>>>> In particular I'd like to mention the ACTN VN, which is a construct
>>>> that sees to address many of the requirements for the network slicing.
>>>>
>>>> My analysis of the gaps is as follows (please correct what I'm missing).
>>>> Req 1 - Network Slicing Specification: To me this looks like exactly
>>>> an Ato be CTN Virtual Network. In section 4.1 one thing that I
>>>> understand to be missing to the VN is the reachability scope
>>>> (limited scope vs Internet-wide).
>>>> Req 2 - Network Slicing Cross-Domain Coordination: This seems to be
>>>> one of the MDSC functionalities, actually the most important.
>>>> Req 3 - Network Slicing Performance Guarantee and Isolation: This is
>>>> a target that can be reached via a Virtual Network, where resources
>>>> can be dedicated to a slice or shared among slices and the
>>>> computation done with constraints. Extensions for VN Telemetry are
>>>> already available (even if this is at an earlier stage).
>>>> Req 4 - Network Slicing OAM (NS-OAM). Being the VN members defined
>>>> as a set of stitched tunnels and LSPs the OAM tools available for
>>>> tunnels and LSPs are automatically inherited.
>>>>
>>>> Two more detailed comments:
>>>>
>>>> 1. Section  5.2.3.
>>>> It is said that: " However, ACTN focuses on resource
>>>>    abstraction and management on Layer 2 and Layer 1.  For transport
>>>>    network slicing, resources abstraction and management on Layer 3+
>>>>    (e.g., IP routing table, etc.) may also be necessary but have not
>>>>    been addressed by ACTN."
>>>> I don't know where MPLS is positioned in your analysis (according to
>>>> some people it's layer 2, to some others it's 2.5, and someone
>>>> believes it's layer 3), but ACTN covers any kind of TE technology,
>>>> including MPLS-TE and SR-TE. Building a slice without TE, well, it
>>>> can be done, but how is it possible to guarantee KPIs, SLA, and so on?
>>>>
>>>>
>>>> 2. Section 6.2.3.
>>>> It is said that: "RSVP-TE LSPs can be used as the underlay tunnels
>>>>    of the VPN service connections.  However, the requirement of some
>>>>    emerging services is not only about traffic bandwidth, but also has
>>>>    quite strict requirement on latency, jitter, etc.  Such requirements
>>>>    can hardly be met with existing RSVP-TE."
>>>> RSVP-TE is used to reserve the resource along the path meeting the
>>>> required constraints. If such path exists, RSVP-TE can reserve it,
>>>> otherwise no one can.
>>>>
>>>> Hence my disagreement with the conclusions in Table 2.
>>>>
>>>> Thank you
>>>> Daniele
>>>>
>>>> -----Original Message-----
>>>> From: Netslices [mailto:netslices-bounces@ietf.org] On Behalf Of Lou
>>>> Berger
>>>> Sent: domenica 9 luglio 2017 21:08
>>>> To: netslices@ietf.org <mailto:netslices@ietf.org>
>>>> Subject: [Netslices] Some comments on draft-qiang-netslices-gap-analysis
>>>>
>>>> Hi,
>>>>
>>>> With all they "excitement" on slicing I'm sure there is work to be
>>>> done on the topic, but I think it would be good for such work to
>>>> build on (and at worst, understand) the IETF technology/RFCs.  In
>>>> reading this draft, I really felt like the authors were not familiar
>>>> with the substantive work that has been on TE networks over the
>>>> years, notably:
>>>>
>>>> - Section 5.2 cross domain coordination
>>>>
>>>> There are many years of work and related RFCs in this area in IETF
>>>> TE that are missing from the 'gap analysis' .  I suggest reading
>>>> RFC7926 as a good primer on existing RFCs as well as some background
>>>> that predates the current TEAS ACTN work.
>>>>
>>>> - WRT Section 6.2.1 and 2.3
>>>>
>>>> MPLS-TE solutions are broader than just signaling, i.e., routing is
>>>> just as important.  RCF7926 has sufficient pointers to good
>>>> references for this.  On a more specific note, this section is
>>>> missing the intersection of VPNs and RSVP-TE and L3VPNs, see RFC
>>>> 6882.  Even more notably, the section is missing that TE LSPs can
>>>> support the Guaranteed Quality of Service defined by RFC2212 (even
>>>> if some vendors choose not to implement it), GS is defined as:
>>>>
>>>>    Guaranteed service provides firm (mathematically provable)
>>>>    bounds on end-to-end datagram queueing delays.  This service makes it
>>>>    possible to provide a service that guarantees both delay and
>>>>    bandwidth.
>>>>
>>>> - Also, separately and in the context of Section 6.2.5
>>>>
>>>> I think the 1st paragraph of correctly states that DetNet is
>>>> concerned with "low packet loss rates, low packet  delay variation
>>>> (jitter) and assured maximum end-to-end delivery latency."
>>>> (leveraging existing RFCs to the maximum extent possible.)  But much
>>>> of the rest of the section contradicts this and I really can't seem
>>>> to parse the 2nd paragraph in any way that makes sense in the
>>>> context of detnet or delivering low loss, low jitter and
>>>> deterministic latency.
>>>>
>>>> Also,  I suggest referencing 802.1TSN in the context or DetNet or
>>>> independently.  FWIW there is an 802.1 TSN tutorial scheduled for Sunday
>>>> (1345-1445 in Congress Hall III) and we'll be spending some time in
>>>> the DetNet WG session on understanding 802.1 TSN's flow
>>>> requirements/capabilities and how to they might be leveraged (and
>>>> support) by DetNet.
>>>>
>>>> - finally, WRT timing
>>>>
>>>> I'd think mentioned 1588 and other related time sync work in IETF
>>>> could be relevant.
>>>>
>>>> Lou
>>>>
>>>>
>>>> _______________________________________________
>>>> Netslices mailing list
>>>> Netslices@ietf.org <mailto:Netslices@ietf.org>
>>>> https://www.ietf.org/mailman/listinfo/netslices
>>>>
>>>> _______________________________________________
>>>> Netslices mailing list
>>>> Netslices@ietf.org
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>>>
>>>
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>>
>>
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References: <abda1f7d-a27c-7324-bcea-ad66b9fcf0d8@labn.net> <AM2PR07MB0994ECC43A1791AABAF8BE5CF0A90@AM2PR07MB0994.eurprd07.prod.outlook.com> <28DB5287-8FB2-459D-BACA-AAB330C2E320@ucl.ac.uk> <f1f27ead-4c40-2315-0927-f5279a6cc0e2@gmail.com> <8f1cfab0-5e2a-8d6d-6812-9fcf079ecf4a@labn.net> <2744a966-7e43-6056-5b2a-25af9f45aad3@gmail.com>
From: Lou Berger <lberger@labn.net>
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Subject: Re: [Netslices] Some comments on draft-qiang-netslices-gap-analysiswe are not
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Hi Stewart,


On 7/10/2017 2:49 PM, Stewart Bryant wrote:
> Hi Lou,
>
> Ah yes, you should be confused, I was confused and mixed up two threads!
glad I'm not loosing my mind -- I'll save that for next week!

> What I have been looking at is a tighter integration between the 
> customer layer and the service underlay to understand how to deliver the 
> packets properly.
>
> I did take a quick look at RFC2212 and this tells us something of how to 
> specify performance guarantees, but seems to assume nothing more 
> sophisticated than policing and WFQ. I am not sure that this is enough.
I agree with this too, at least in the DetNet context, but it *is* the
established IETF starting point.  There's also support for MEF10.1
traffic parameters in RFC6003, but I think this is less interesting..

> I will not arrive in time for the 802 presentation, but I seem to 
> remember attending one in the past where the focus was more on what 
> documents there were than n how it worked and why it looked like it does.
I believe the slides are posted
(https://datatracker.ietf.org/group/edu/materials/) and the normal
youtube should be available Late Monday or Tuesday.   I'm hoping to get
to the interesting parts (traffic description and handling/queuing) in
the TSN discussion in Thursday AM's DetNet WG Session.

> My interest with this is bottom up: how to get the bits across the 
> network with the right characteristics. I don't think it matters much 
> what the various abstraction layers look like unless the lower layers 
> can physically deliver the tenants' bits across the network with the 
> right characteristics. 
100% agree and that's why much of our current discussion is on data
plane in DetNet.  My hope is that we'll leave this meeting with solid
direction on tagging and protection, and the TSN discussion will help
focus future discussion on service traffic description (flow spec).
 
> Of course we do need the upper layers to 
> interface with the system dynamically collecting user requirements and 
> then talk the network layer into delivering the bits, but that is a 
> problem that I hope that others more qualified will consider, and for 
> the moment I have no opinion on them.
That parallels DetNet as well.  In addition to nailing down the data
plane, we're looking to develop an information model (we'll be
discussing some individual work on this in Prague) and a YANG data model
in the current set of deliverables.  Once that's done, we're aiming to
dovetail into existing/ongoing work in other WGs, but this is a
discussion for the future.

Cheers,
Lou
>
> - Stewart
>
>
>
> On 10/07/2017 18:11, Lou Berger wrote:
>> Stewart,
>>
>>      Your mail is a bit hard to follow as it seems that you are
>> disagreeing with Alex's comments but attributing them to Daniel.
>>
>> It seems you are really just trying to understand data plane details,
>> and I suspect you are more interested in traffic handling vs marking. Is
>> this correct?  If so, I suggest starting with RFC2112 for the IETF
>> definition of a bonded delay and bandwidth service and to see where
>> detnet headed see 802.1 TSN (http://www.ieee802.org/1/ -- there is even
>> 802.1CM - Time-Sensitive Networking for Fronthaul).
>>
>> If you're interested in marking, existing TE solutions are MPLS based
>> (control can be whatever you'd like) and DetNet is currently planning
>> MPLS+PWs and IPv6.
>>
>> Lou
>>
>> PS In case you missed it: There is an 802.1 TSN tutorial scheduled for
>> Sunday
>> (1345-1445 in Congress Hall III) and we'll be spending some time in the
>> DetNet WG session on understanding 802.1 TSN's flow
>> requirements/capabilities and how to they might be leveraged (and
>> support) by DetNet.
>>
>> On 7/10/2017 12:08 PM, Stewart Bryant wrote:
>>>
>>> On 10/07/2017 16:34, Alex Galis wrote:
>>>> Hi Lou, Daniele and All
>>>>
>>>> Thank you for your constructive comments  and views.
>>>>
>>>> Please note that there are references and suggestions on how ACTN
>>>> tenologieies could be used in part for Network Slicing in the
>>>> following drafts:
>>>>
>>>> • Network Slicing - Revised Problem
>>>> Statement draft-galis-netslices-revised-problem-statement-01
>>>> • Network Slicing Architecture draft-geng-netslices-architecture-02
>>>> • Network Slicing Use Cases: Network Customization and
>>>> Differentiated Services draft-netslices-usecases-01
>>> How is that relevant to these slides, they do not talk about ACTN.
>>>
>>>> Please also note that we are not proposing an other VPN++ or an other
>>>> overlay to be defined /designed at IETF. What would be the point of
>>>> such unnecessary proposals  which would create at best yet an
>>>> other network with best effort support for all services?
>>> I am talking about VPN+, these new slides do not. Although the issue
>>> of how you instantiate your ideas in the dataplane is something I look
>>> forward to you explaining to us. Here I don't want a pointer to an
>>> obscure theoretical text. If you were asked to build a physical system
>>> to shift the bits in a project starting the week after IETF, how would
>>> you do it?
>>>
>>>> Some of the requirements for NetSlicing are similar to ACTN
>>>> requirements however they differ in the following key characterisations:
>>>>
>>>> • NS is mainly an in-band management concept in support  well at
>>>> least one service at a given time. It is also
>>>> coordinating/orchestrating network functions and resources.
>>>>
>>> Don't you immediately hit Turing's problem with that? You need to
>>> create the service out of band, and you are going to have to do a lot
>>> of other management out of band?
>>>
>>>> • NS is dynamically and non-disruptively reprovisioned.
>>>>
>>> I don't think we have said otherwise, although I don't see how you
>>> achieve that in a strict definition of non-disruptive. Indeed I think
>>> that you can prove that this is infeasible. For example if you
>>> reprovision a path to one with greater capacity (or less capacity to
>>> free up unused resources) how you avoid the latency change or packet
>>> misorder?
>>>
>>>> • Network slices are concurrently deployed as multiple logical,
>>>> self-contained and independent, partitioned network & service
>>>> functions and resources (connectivity, storage and computation
>>>>   resources) a common physical infrastructure in order to support well
>>>> at least one service at a given time.
>>>>
>>> What does that mean in practice? I really think you need to show us
>>> data plane types how you achieve that.
>>>
>>>> * NS has as the ability to dynamically expose and possibly negotiate
>>>> the parameters that characterise an network slice. Network slices are
>>>> configurable and programmable.
>>>>
>>> We agree, show me where the slides say otherwise?
>>>
>>>> • NS has its own operator that sees it as a complete network
>>>> infrastructure and to use part of the network resources to meet
>>>> stringent resource requirements.
>>>>
>>> The devil is in the detail here which I look forward to you describing
>>> to the rest of us.
>>>
>>>> • NS is supporting tenant(s) that are strongly independent on
>>>> infrastructure.
>>>>
>>> Where has anyone said otherwise?
>>>
>>>> • NS is introducing an additional layer of abstraction by the
>>>> creation of logically or physically isolated groups of network
>>>> resources and network function/virtual network functions
>>>> configurations separating its behaviour from the underlying physical
>>>> network.
>>>>
>>> I think you need to explain that to us, or at least to me a little
>>> more clearly. All abstractions need to resolve to the physics of the
>>> service, so lets understand what your statement means in practical terms.
>>>
>>>> As such NS is not an overlay or an underlay (i.e. a VPN++)
>>>>
>>> OK, put your description of  the physics on the table, because I can
>>> guarantee you will get that question at the BOF.
>>>
>>>> I hope that the above would be of help to you.
>>> No, I need to understand how I actually build one of these systems,
>>> and in none of your work have you explained to me how you get a
>>> tenant's packets from A to B with the constraints you propose. So
>>> without reference to am obscure text please explain how we generate
>>> the the physical realization of one of these systems?
>>>
>>> Best Regards
>>>
>>> - Stewart
>>>> Best Regards
>>>> Alex
>>>>
>>>>
>>>>
>>>>> On 10 Jul 2017, at 14:06, Daniele Ceccarelli
>>>>> <daniele.ceccarelli@ericsson.com
>>>>> <mailto:daniele.ceccarelli@ericsson.com>> wrote:
>>>>>
>>>>> Hi all,
>>>>>
>>>>> while i totally share Lou's point of view I'd like to add some
>>>>> references that might help understanding what is already there and
>>>>> possibly targeting a better gap analysis.
>>>>>
>>>>> The 9 requirements shown in table 1 and mapped against 4 KEY
>>>>> requirements are very valuable but I struggle to see the difference
>>>>> between them and the ACTN requirements ,where we have 8
>>>>> service-related requirements and 5 network-related requirements
>>>>> (https://tools.ietf.org/html/draft-ietf-teas-actn-requirements-05 WG
>>>>> document since Oct 2015).
>>>>>
>>>>> When it comes to the solutions for those requirements Lou correctly
>>>>> pointed out at RFC 7926 (Problem Statement and Architecture for
>>>>> Information Exchange between Interconnected Traffic-Engineered
>>>>> Networks) and on the TEAS WG and PCE WG pages you can find a number
>>>>> of documents including framework, abstraction methods, info model,
>>>>> interfaces, applicability of PCE and YANG models to ACTN, telemetry.
>>>>> In particular I'd like to mention the ACTN VN, which is a construct
>>>>> that sees to address many of the requirements for the network slicing.
>>>>>
>>>>> My analysis of the gaps is as follows (please correct what I'm missing).
>>>>> Req 1 - Network Slicing Specification: To me this looks like exactly
>>>>> an Ato be CTN Virtual Network. In section 4.1 one thing that I
>>>>> understand to be missing to the VN is the reachability scope
>>>>> (limited scope vs Internet-wide).
>>>>> Req 2 - Network Slicing Cross-Domain Coordination: This seems to be
>>>>> one of the MDSC functionalities, actually the most important.
>>>>> Req 3 - Network Slicing Performance Guarantee and Isolation: This is
>>>>> a target that can be reached via a Virtual Network, where resources
>>>>> can be dedicated to a slice or shared among slices and the
>>>>> computation done with constraints. Extensions for VN Telemetry are
>>>>> already available (even if this is at an earlier stage).
>>>>> Req 4 - Network Slicing OAM (NS-OAM). Being the VN members defined
>>>>> as a set of stitched tunnels and LSPs the OAM tools available for
>>>>> tunnels and LSPs are automatically inherited.
>>>>>
>>>>> Two more detailed comments:
>>>>>
>>>>> 1. Section  5.2.3.
>>>>> It is said that: " However, ACTN focuses on resource
>>>>>    abstraction and management on Layer 2 and Layer 1.  For transport
>>>>>    network slicing, resources abstraction and management on Layer 3+
>>>>>    (e.g., IP routing table, etc.) may also be necessary but have not
>>>>>    been addressed by ACTN."
>>>>> I don't know where MPLS is positioned in your analysis (according to
>>>>> some people it's layer 2, to some others it's 2.5, and someone
>>>>> believes it's layer 3), but ACTN covers any kind of TE technology,
>>>>> including MPLS-TE and SR-TE. Building a slice without TE, well, it
>>>>> can be done, but how is it possible to guarantee KPIs, SLA, and so on?
>>>>>
>>>>>
>>>>> 2. Section 6.2.3.
>>>>> It is said that: "RSVP-TE LSPs can be used as the underlay tunnels
>>>>>    of the VPN service connections.  However, the requirement of some
>>>>>    emerging services is not only about traffic bandwidth, but also has
>>>>>    quite strict requirement on latency, jitter, etc.  Such requirements
>>>>>    can hardly be met with existing RSVP-TE."
>>>>> RSVP-TE is used to reserve the resource along the path meeting the
>>>>> required constraints. If such path exists, RSVP-TE can reserve it,
>>>>> otherwise no one can.
>>>>>
>>>>> Hence my disagreement with the conclusions in Table 2.
>>>>>
>>>>> Thank you
>>>>> Daniele
>>>>>
>>>>> -----Original Message-----
>>>>> From: Netslices [mailto:netslices-bounces@ietf.org] On Behalf Of Lou
>>>>> Berger
>>>>> Sent: domenica 9 luglio 2017 21:08
>>>>> To: netslices@ietf.org <mailto:netslices@ietf.org>
>>>>> Subject: [Netslices] Some comments on draft-qiang-netslices-gap-analysis
>>>>>
>>>>> Hi,
>>>>>
>>>>> With all they "excitement" on slicing I'm sure there is work to be
>>>>> done on the topic, but I think it would be good for such work to
>>>>> build on (and at worst, understand) the IETF technology/RFCs.  In
>>>>> reading this draft, I really felt like the authors were not familiar
>>>>> with the substantive work that has been on TE networks over the
>>>>> years, notably:
>>>>>
>>>>> - Section 5.2 cross domain coordination
>>>>>
>>>>> There are many years of work and related RFCs in this area in IETF
>>>>> TE that are missing from the 'gap analysis' .  I suggest reading
>>>>> RFC7926 as a good primer on existing RFCs as well as some background
>>>>> that predates the current TEAS ACTN work.
>>>>>
>>>>> - WRT Section 6.2.1 and 2.3
>>>>>
>>>>> MPLS-TE solutions are broader than just signaling, i.e., routing is
>>>>> just as important.  RCF7926 has sufficient pointers to good
>>>>> references for this.  On a more specific note, this section is
>>>>> missing the intersection of VPNs and RSVP-TE and L3VPNs, see RFC
>>>>> 6882.  Even more notably, the section is missing that TE LSPs can
>>>>> support the Guaranteed Quality of Service defined by RFC2212 (even
>>>>> if some vendors choose not to implement it), GS is defined as:
>>>>>
>>>>>    Guaranteed service provides firm (mathematically provable)
>>>>>    bounds on end-to-end datagram queueing delays.  This service makes it
>>>>>    possible to provide a service that guarantees both delay and
>>>>>    bandwidth.
>>>>>
>>>>> - Also, separately and in the context of Section 6.2.5
>>>>>
>>>>> I think the 1st paragraph of correctly states that DetNet is
>>>>> concerned with "low packet loss rates, low packet  delay variation
>>>>> (jitter) and assured maximum end-to-end delivery latency."
>>>>> (leveraging existing RFCs to the maximum extent possible.)  But much
>>>>> of the rest of the section contradicts this and I really can't seem
>>>>> to parse the 2nd paragraph in any way that makes sense in the
>>>>> context of detnet or delivering low loss, low jitter and
>>>>> deterministic latency.
>>>>>
>>>>> Also,  I suggest referencing 802.1TSN in the context or DetNet or
>>>>> independently.  FWIW there is an 802.1 TSN tutorial scheduled for Sunday
>>>>> (1345-1445 in Congress Hall III) and we'll be spending some time in
>>>>> the DetNet WG session on understanding 802.1 TSN's flow
>>>>> requirements/capabilities and how to they might be leveraged (and
>>>>> support) by DetNet.
>>>>>
>>>>> - finally, WRT timing
>>>>>
>>>>> I'd think mentioned 1588 and other related time sync work in IETF
>>>>> could be relevant.
>>>>>
>>>>> Lou
>>>>>
>>>>>
>>>>> _______________________________________________
>>>>> Netslices mailing list
>>>>> Netslices@ietf.org <mailto:Netslices@ietf.org>
>>>>> https://www.ietf.org/mailman/listinfo/netslices
>>>>>
>>>>> _______________________________________________
>>>>> Netslices mailing list
>>>>> Netslices@ietf.org
>>>>> https://www.ietf.org/mailman/listinfo/netslices
>>>>
>>>> _______________________________________________
>>>> Netslices mailing list
>>>> Netslices@ietf.org
>>>> https://www.ietf.org/mailman/listinfo/netslices
>>>
>>> This body part will be downloaded on demand.
>


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From nobody Mon Jul 10 20:41:55 2017
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From: "qiangli (D)" <qiangli3@huawei.com>
To: Lou Berger <lberger@labn.net>, "netslices@ietf.org" <netslices@ietf.org>
Thread-Topic: [Netslices] Some comments on draft-qiang-netslices-gap-analysis
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Subject: Re: [Netslices] Some comments on draft-qiang-netslices-gap-analysis
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Hi Lou,

Thank you for your comments, please see my reply marked as [Cr] inline.

Best regards,

Cristina QIANG

-----Original Message-----
From: Netslices [mailto:netslices-bounces@ietf.org] On Behalf Of Lou Berger
Sent: Monday, July 10, 2017 3:08 AM
To: netslices@ietf.org
Subject: [Netslices] Some comments on draft-qiang-netslices-gap-analysis

Hi,

With all they "excitement" on slicing I'm sure there is work to be done on =
the topic, but I think it would be good for such work to build on (and at w=
orst, understand) the IETF technology/RFCs.  In reading this draft, I reall=
y felt like the authors were not familiar with the substantive work that ha=
s been on TE networks over the years, notably:

- Section 5.2 cross domain coordination

There are many years of work and related RFCs in this area in IETF TE that =
are missing from the 'gap analysis' .  I suggest reading RFC7926 as a good =
primer on existing RFCs as well as some background that predates the curren=
t TEAS ACTN work.

[Cr] I have taken a quick look at RFC 7926, If I understand it correctly th=
e cross-domain coordination here is addressed through Step 1) abstracting T=
E information; Step 2) advertising the abstracted Infor in the abstraction =
layer network. I agree with you that there are a lot of related work on the=
se two points (e.g., ACTN for abstraction, BGP for advertisement), netslici=
ng specific extension on these related work may be enough. As we clarified =
in section 8, what is missing is the data model for flat cross-domain coord=
ination IMHO.


- WRT Section 6.2.1 and 2.3=20

MPLS-TE solutions are broader than just signaling, i.e., routing is just as=
 important.  RCF7926 has sufficient pointers to good references for this.  =
On a more specific note, this section is missing the intersection of VPNs a=
nd RSVP-TE and L3VPNs, see RFC 6882.  Even more notably, the section is mis=
sing that TE LSPs can support the Guaranteed Quality of Service defined by =
RFC2212 (even if some vendors choose not to implement it), GS is defined as=
:

   Guaranteed service provides firm (mathematically provable)
   bounds on end-to-end datagram queueing delays.  This service makes it
   possible to provide a service that guarantees both delay and
   bandwidth.

[Cr] Good point.

- Also, separately and in the context of Section 6.2.5

I think the 1st paragraph of correctly states that DetNet is concerned with=
 "low packet loss rates, low packet  delay variation (jitter) and assured m=
aximum end-to-end delivery latency." (leveraging existing RFCs to the maxim=
um extent possible.)  But much of the rest of the section contradicts this =
and I really can't seem to parse the 2nd paragraph in any way that makes se=
nse in the context of detnet or delivering low loss, low jitter and determi=
nistic latency.

[Cr] Statement in 2rd paragraph will be modified in the next version.

Also,  I suggest referencing 802.1TSN in the context or DetNet or independe=
ntly.  FWIW there is an 802.1 TSN tutorial scheduled for Sunday
(1345-1445 in Congress Hall III) and we'll be spending some time in the Det=
Net WG session on understanding 802.1 TSN's flow requirements/capabilities =
and how to they might be leveraged (and
support) by DetNet.

- finally, WRT timing

I'd think mentioned 1588 and other related time sync work in IETF could be =
relevant.

Lou


_______________________________________________
Netslices mailing list
Netslices@ietf.org
https://www.ietf.org/mailman/listinfo/netslices


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From: "qiangli (D)" <qiangli3@huawei.com>
To: Daniele Ceccarelli <daniele.ceccarelli@ericsson.com>, Lou Berger <lberger@labn.net>, "netslices@ietf.org" <netslices@ietf.org>
Thread-Topic: [Netslices] Some comments on draft-qiang-netslices-gap-analysis
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Date: Tue, 11 Jul 2017 07:12:24 +0000
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Subject: Re: [Netslices] Some comments on draft-qiang-netslices-gap-analysis
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Hi Daniele,

Thank you for your comments, please see my reply marked as [Cr] inline.

Best regards,

Cristina QIANG


-----Original Message-----
From: Netslices [mailto:netslices-bounces@ietf.org] On Behalf Of Daniele Ce=
ccarelli
Sent: Monday, July 10, 2017 9:06 PM
To: Lou Berger; netslices@ietf.org
Subject: Re: [Netslices] Some comments on draft-qiang-netslices-gap-analysi=
s

Hi all,

while i totally share Lou's point of view I'd like to add some references t=
hat might help understanding what is already there and possibly targeting a=
 better gap analysis.

The 9 requirements shown in table 1 and mapped against 4 KEY requirements a=
re very valuable but I struggle to see the difference between them and the =
ACTN requirements ,where we have 8 service-related requirements and 5 netwo=
rk-related requirements (https://tools.ietf.org/html/draft-ietf-teas-actn-r=
equirements-05 WG document since Oct 2015).

[Cr] It's not difficult to understand that NetSlicing and ACTN have differe=
nt requirements if you can accept NetSlicing and ACTN are not the same thin=
g. I suggest you jump out of ACTN and try to look at network slicing in an =
independent perspective.


When it comes to the solutions for those requirements Lou correctly pointed=
 out at RFC 7926 (Problem Statement and Architecture for Information Exchan=
ge between Interconnected Traffic-Engineered Networks) and on the TEAS WG a=
nd PCE WG pages you can find a number of documents including framework, abs=
traction methods, info model, interfaces, applicability of PCE and YANG mod=
els to ACTN, telemetry. In particular I'd like to mention the ACTN VN, whic=
h is a construct that sees to address many of the requirements for the netw=
ork slicing.=20

[Cr] We will never deny that ACTN could be one of the solutions for NetSlic=
ing.


My analysis of the gaps is as follows (please correct what I'm missing).
Req 1 - Network Slicing Specification: To me this looks like exactly an ACT=
N Virtual Network. In section 4.1 one thing that I understand to be missing=
 to the VN is the reachability scope (limited scope vs Internet-wide).

[Cr] There are two aspects here --- describe the network resources/function=
s & capture the NetSlicing requirements.=20
ACTN does provide a certain degree of resource abstraction, but probably no=
t enough. As we stated in section 4.2.2.2, ACTN focuses on Traffic Engineer=
ing aspect and some resources such as IP routing table is not covered.
Meanwhile, the NetSlicing requirements such as path restriction (e.g., spec=
ify some points that must be passed through for security reasons--different=
 from deterministic routing), high-availability guidelines (e.g., restorati=
on within 10ms, 100ms, or 1 second) also need to be considered.

Req 2 - Network Slicing Cross-Domain Coordination: This seems to be one of =
the MDSC functionalities, actually the most important.

[Cr] Different domain controllers could coordinate through a common platfor=
m like the (hierarchical) MDSC; or through a flat way.
=20
Req 3 - Network Slicing Performance Guarantee and Isolation: This is a targ=
et that can be reached via a Virtual Network, where resources can be dedica=
ted to a slice or shared among slices and the computation done with constra=
ints. Extensions for VN Telemetry are already available (even if this is at=
 an earlier stage).

[Cr] In additional to VN (TE-tunnel), there are also many other technologie=
s such as VPN, SR, FlexE could be extended and reused for this requirement.

Req 4 - Network Slicing OAM (NS-OAM). Being the VN members defined as a set=
 of stitched tunnels and LSPs the OAM tools available for tunnels and LSPs =
are automatically inherited.

[Cr] If you think ACTN is NetSlicing (or VN is network slice instance), I w=
ill not oppose your above statement. Then please think about how will you p=
rovide OAM if the slice is implemented by SFC technology. NS-OAM is not an =
OAM tool related problem, as Section 7.2.1 stated there are lots of technol=
ogy-specific tools can be reused in the context of network slicing, no gap =
identified so far. The problem of NS-OAM is that, the network slicing has c=
ompletely changes the granularity of OAM.=20

Two more detailed comments:

1. Section  5.2.3.
It is said that: " However, ACTN focuses on resource
   abstraction and management on Layer 2 and Layer 1.  For transport
   network slicing, resources abstraction and management on Layer 3+
   (e.g., IP routing table, etc.) may also be necessary but have not
   been addressed by ACTN."
I don't know where MPLS is positioned in your analysis (according to some p=
eople it's layer 2, to some others it's 2.5, and someone believes it's laye=
r 3), but ACTN covers any kind of TE technology, including MPLS-TE and SR-T=
E. Building a slice without TE, well, it can be done, but how is it possibl=
e to guarantee KPIs, SLA, and so on?=20


2. Section 6.2.3.
It is said that: "RSVP-TE LSPs can be used as the underlay tunnels
   of the VPN service connections.  However, the requirement of some
   emerging services is not only about traffic bandwidth, but also has
   quite strict requirement on latency, jitter, etc.  Such requirements
   can hardly be met with existing RSVP-TE."
RSVP-TE is used to reserve the resource along the path meeting the required=
 constraints. If such path exists, RSVP-TE can reserve it, otherwise no one=
 can.

Hence my disagreement with the conclusions in Table 2.

Thank you
Daniele =20

-----Original Message-----
From: Netslices [mailto:netslices-bounces@ietf.org] On Behalf Of Lou Berger
Sent: domenica 9 luglio 2017 21:08
To: netslices@ietf.org
Subject: [Netslices] Some comments on draft-qiang-netslices-gap-analysis

Hi,

With all they "excitement" on slicing I'm sure there is work to be done on =
the topic, but I think it would be good for such work to build on (and at w=
orst, understand) the IETF technology/RFCs.  In reading this draft, I reall=
y felt like the authors were not familiar with the substantive work that ha=
s been on TE networks over the years, notably:

- Section 5.2 cross domain coordination

There are many years of work and related RFCs in this area in IETF TE that =
are missing from the 'gap analysis' .  I suggest reading RFC7926 as a good =
primer on existing RFCs as well as some background that predates the curren=
t TEAS ACTN work.

- WRT Section 6.2.1 and 2.3=20

MPLS-TE solutions are broader than just signaling, i.e., routing is just as=
 important.  RCF7926 has sufficient pointers to good references for this.  =
On a more specific note, this section is missing the intersection of VPNs a=
nd RSVP-TE and L3VPNs, see RFC 6882.  Even more notably, the section is mis=
sing that TE LSPs can support the Guaranteed Quality of Service defined by =
RFC2212 (even if some vendors choose not to implement it), GS is defined as=
:

   Guaranteed service provides firm (mathematically provable)
   bounds on end-to-end datagram queueing delays.  This service makes it
   possible to provide a service that guarantees both delay and
   bandwidth.

- Also, separately and in the context of Section 6.2.5

I think the 1st paragraph of correctly states that DetNet is concerned with=
 "low packet loss rates, low packet  delay variation (jitter) and assured m=
aximum end-to-end delivery latency." (leveraging existing RFCs to the maxim=
um extent possible.)  But much of the rest of the section contradicts this =
and I really can't seem to parse the 2nd paragraph in any way that makes se=
nse in the context of detnet or delivering low loss, low jitter and determi=
nistic latency.

Also,  I suggest referencing 802.1TSN in the context or DetNet or independe=
ntly.  FWIW there is an 802.1 TSN tutorial scheduled for Sunday
(1345-1445 in Congress Hall III) and we'll be spending some time in the Det=
Net WG session on understanding 802.1 TSN's flow requirements/capabilities =
and how to they might be leveraged (and
support) by DetNet.

- finally, WRT timing

I'd think mentioned 1588 and other related time sync work in IETF could be =
relevant.

Lou


_______________________________________________
Netslices mailing list
Netslices@ietf.org
https://www.ietf.org/mailman/listinfo/netslices

_______________________________________________
Netslices mailing list
Netslices@ietf.org
https://www.ietf.org/mailman/listinfo/netslices


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From: Daniele Ceccarelli <daniele.ceccarelli@ericsson.com>
To: Kiran.Makhijani <Kiran.Makhijani@huawei.com>, Lou Berger <lberger@labn.net>, "netslices@ietf.org" <netslices@ietf.org>
Thread-Topic: [Netslices] Some comments on draft-qiang-netslices-gap-analysis
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Subject: Re: [Netslices] Some comments on draft-qiang-netslices-gap-analysis
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From: Daniele Ceccarelli <daniele.ceccarelli@ericsson.com>
To: "qiangli (D)" <qiangli3@huawei.com>, Lou Berger <lberger@labn.net>, "netslices@ietf.org" <netslices@ietf.org>
Thread-Topic: [Netslices] Some comments on draft-qiang-netslices-gap-analysis
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Archived-At: <https://mailarchive.ietf.org/arch/msg/netslices/E4uNTBghnzzbN-YA-blRttludSo>
Subject: Re: [Netslices] Some comments on draft-qiang-netslices-gap-analysis
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Hi Cristina,

My email ended up focusing on ACTN because it's my area of expertise, but m=
y incipit was that I totally share Lou's point of view on the fact that the=
re are a lot of consolidated solutions in the routing area (among which ACT=
N, DetNet, and many other TE initiatives) that seem to have already address=
ed the requirements that are being defined against the TE network.

Please see my further replies in line.

BR/Daniele =20


-----Original Message-----
From: qiangli (D) [mailto:qiangli3@huawei.com]=20
Sent: marted=EC 11 luglio 2017 09:12
To: Daniele Ceccarelli <daniele.ceccarelli@ericsson.com>; Lou Berger <lberg=
er@labn.net>; netslices@ietf.org
Subject: RE: [Netslices] Some comments on draft-qiang-netslices-gap-analysi=
s

Hi Daniele,

Thank you for your comments, please see my reply marked as [Cr] inline.

Best regards,

Cristina QIANG


-----Original Message-----
From: Netslices [mailto:netslices-bounces@ietf.org] On Behalf Of Daniele Ce=
ccarelli
Sent: Monday, July 10, 2017 9:06 PM
To: Lou Berger; netslices@ietf.org
Subject: Re: [Netslices] Some comments on draft-qiang-netslices-gap-analysi=
s

Hi all,

while i totally share Lou's point of view I'd like to add some references t=
hat might help understanding what is already there and possibly targeting a=
 better gap analysis.

The 9 requirements shown in table 1 and mapped against 4 KEY requirements a=
re very valuable but I struggle to see the difference between them and the =
ACTN requirements ,where we have 8 service-related requirements and 5 netwo=
rk-related requirements (https://tools.ietf.org/html/draft-ietf-teas-actn-r=
equirements-05 WG document since Oct 2015).

[Cr] It's not difficult to understand that NetSlicing and ACTN have differe=
nt requirements if you can accept NetSlicing and ACTN are not the same thin=
g. I suggest you jump out of ACTN and try to look at network slicing in an =
independent perspective.
[>DC] Thanks, I will try...but I guess I jump too low since from a transpor=
t point of view I still see none.

When it comes to the solutions for those requirements Lou correctly pointed=
 out at RFC 7926 (Problem Statement and Architecture for Information Exchan=
ge between Interconnected Traffic-Engineered Networks) and on the TEAS WG a=
nd PCE WG pages you can find a number of documents including framework, abs=
traction methods, info model, interfaces, applicability of PCE and YANG mod=
els to ACTN, telemetry. In particular I'd like to mention the ACTN VN, whic=
h is a construct that sees to address many of the requirements for the netw=
ork slicing.=20

[Cr] We will never deny that ACTN could be one of the solutions for NetSlic=
ing.
[>DC] But few lines above you said that Netslicing and ACTN have different =
requirements...


My analysis of the gaps is as follows (please correct what I'm missing).
Req 1 - Network Slicing Specification: To me this looks like exactly an ACT=
N Virtual Network. In section 4.1 one thing that I understand to be missing=
 to the VN is the reachability scope (limited scope vs Internet-wide).

[Cr] There are two aspects here --- describe the network resources/function=
s & capture the NetSlicing requirements.=20
ACTN does provide a certain degree of resource abstraction, but probably no=
t enough. As we stated in section 4.2.2.2, ACTN focuses on Traffic Engineer=
ing aspect and some resources such as IP routing table is not covered.
[>DC] IP routing tables are not addressed by ACTN but they are from e.g. I2=
RS. In any case, if you want to guarantee end to end SLA and KPI with routi=
ng tables...good luck=20

Meanwhile, the NetSlicing requirements such as path restriction (e.g., spec=
ify some points that must be passed through for security reasons--different=
 from deterministic routing), high-availability guidelines (e.g., restorati=
on within 10ms, 100ms, or 1 second) also need to be considered.
[>DC] This is just adding path computation constraints and configuration pa=
rameters to the existing tools.


Req 2 - Network Slicing Cross-Domain Coordination: This seems to be one of =
the MDSC functionalities, actually the most important.
[Cr] Different domain controllers could coordinate through a common platfor=
m like the (hierarchical) MDSC; or through a flat way.
[>DC] what do you mean with flat way? Peering? Since hierarchy is already t=
here why defining another methods to reach the same? Multiple parallel solu=
tions always decrease the chances of interop.
=20
Req 3 - Network Slicing Performance Guarantee and Isolation: This is a targ=
et that can be reached via a Virtual Network, where resources can be dedica=
ted to a slice or shared among slices and the computation done with constra=
ints. Extensions for VN Telemetry are already available (even if this is at=
 an earlier stage).

[Cr] In additional to VN (TE-tunnel), there are also many other technologie=
s such as VPN, SR, FlexE could be extended and reused for this requirement.
[>DC] Please see above.

Req 4 - Network Slicing OAM (NS-OAM). Being the VN members defined as a set=
 of stitched tunnels and LSPs the OAM tools available for tunnels and LSPs =
are automatically inherited.

[Cr] If you think ACTN is NetSlicing (or VN is network slice instance), I w=
ill not oppose your above statement. Then please think about how will you p=
rovide OAM if the slice is implemented by SFC technology. NS-OAM is not an =
OAM tool related problem, as Section 7.2.1 stated there are lots of technol=
ogy-specific tools can be reused in the context of network slicing, no gap =
identified so far. The problem of NS-OAM is that, the network slicing has c=
ompletely changes the granularity of OAM.=20
[>DC] This is a good point. The obvious solution that comes to my mind is t=
o bind the SFCs with the same characteristics to the same VN (there are alr=
eady the YANG models available for VPN to VN binding, extending them to inc=
lude also the SFC shouldn't be difficult...provided it's a good idea), but =
I admit here there is room for improvement.=20

Two more detailed comments:

1. Section  5.2.3.
It is said that: " However, ACTN focuses on resource
   abstraction and management on Layer 2 and Layer 1.  For transport
   network slicing, resources abstraction and management on Layer 3+
   (e.g., IP routing table, etc.) may also be necessary but have not
   been addressed by ACTN."
I don't know where MPLS is positioned in your analysis (according to some p=
eople it's layer 2, to some others it's 2.5, and someone believes it's laye=
r 3), but ACTN covers any kind of TE technology, including MPLS-TE and SR-T=
E. Building a slice without TE, well, it can be done, but how is it possibl=
e to guarantee KPIs, SLA, and so on?=20


2. Section 6.2.3.
It is said that: "RSVP-TE LSPs can be used as the underlay tunnels
   of the VPN service connections.  However, the requirement of some
   emerging services is not only about traffic bandwidth, but also has
   quite strict requirement on latency, jitter, etc.  Such requirements
   can hardly be met with existing RSVP-TE."
RSVP-TE is used to reserve the resource along the path meeting the required=
 constraints. If such path exists, RSVP-TE can reserve it, otherwise no one=
 can.

Hence my disagreement with the conclusions in Table 2.

Thank you
Daniele =20

-----Original Message-----
From: Netslices [mailto:netslices-bounces@ietf.org] On Behalf Of Lou Berger
Sent: domenica 9 luglio 2017 21:08
To: netslices@ietf.org
Subject: [Netslices] Some comments on draft-qiang-netslices-gap-analysis

Hi,

With all they "excitement" on slicing I'm sure there is work to be done on =
the topic, but I think it would be good for such work to build on (and at w=
orst, understand) the IETF technology/RFCs.  In reading this draft, I reall=
y felt like the authors were not familiar with the substantive work that ha=
s been on TE networks over the years, notably:

- Section 5.2 cross domain coordination

There are many years of work and related RFCs in this area in IETF TE that =
are missing from the 'gap analysis' .  I suggest reading RFC7926 as a good =
primer on existing RFCs as well as some background that predates the curren=
t TEAS ACTN work.

- WRT Section 6.2.1 and 2.3=20

MPLS-TE solutions are broader than just signaling, i.e., routing is just as=
 important.  RCF7926 has sufficient pointers to good references for this.  =
On a more specific note, this section is missing the intersection of VPNs a=
nd RSVP-TE and L3VPNs, see RFC 6882.  Even more notably, the section is mis=
sing that TE LSPs can support the Guaranteed Quality of Service defined by =
RFC2212 (even if some vendors choose not to implement it), GS is defined as=
:

   Guaranteed service provides firm (mathematically provable)
   bounds on end-to-end datagram queueing delays.  This service makes it
   possible to provide a service that guarantees both delay and
   bandwidth.

- Also, separately and in the context of Section 6.2.5

I think the 1st paragraph of correctly states that DetNet is concerned with=
 "low packet loss rates, low packet  delay variation (jitter) and assured m=
aximum end-to-end delivery latency." (leveraging existing RFCs to the maxim=
um extent possible.)  But much of the rest of the section contradicts this =
and I really can't seem to parse the 2nd paragraph in any way that makes se=
nse in the context of detnet or delivering low loss, low jitter and determi=
nistic latency.

Also,  I suggest referencing 802.1TSN in the context or DetNet or independe=
ntly.  FWIW there is an 802.1 TSN tutorial scheduled for Sunday
(1345-1445 in Congress Hall III) and we'll be spending some time in the Det=
Net WG session on understanding 802.1 TSN's flow requirements/capabilities =
and how to they might be leveraged (and
support) by DetNet.

- finally, WRT timing

I'd think mentioned 1588 and other related time sync work in IETF could be =
relevant.

Lou


_______________________________________________
Netslices mailing list
Netslices@ietf.org
https://www.ietf.org/mailman/listinfo/netslices

_______________________________________________
Netslices mailing list
Netslices@ietf.org
https://www.ietf.org/mailman/listinfo/netslices


From nobody Thu Jul 13 12:36:18 2017
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From: "Adrian Farrel" <adrian@olddog.co.uk>
To: "Network Slices" <netslices@ietf.org>
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Date: Thu, 13 Jul 2017 20:36:09 +0100
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Subject: [Netslices] Looking for volunteers for the Netslicing BoF
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Hi,

We need some volunteers:

- Two people to take minutes
   Minutes do not need to be a verbatim record (there is an audio recording for
that).
   But they should capture the key points made outside of the presentations.
   Minutes can be taken in your own way and then forwarded to the chairs, but
they
   are most effective if you use the Etherpad tool that is available and allows
collaboration.

- One person to be jabber scribe
   RFC 7649 describes this job.
   It can be pretty light, but is important to allow remote participants to
properly play
   a part in the BoF.

Please volunteer now so that we don't waste time at the start of the meeting.

Thanks,
Adrian


From nobody Thu Jul 13 13:21:54 2017
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From: "Susan Hares" <shares@ndzh.com>
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Subject: Re: [Netslices] Looking for volunteers for the Netslicing BoF
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Adrian: 

I will volunteer to either take minute taker or jabber scribe.   I am
familiar with the work - so either works for me. 

Sue Hares

-----Original Message-----
From: Netslices [mailto:netslices-bounces@ietf.org] On Behalf Of Adrian
Farrel
Sent: Thursday, July 13, 2017 3:36 PM
To: Network Slices
Cc: netslicing-chairs@ietf.org
Subject: [Netslices] Looking for volunteers for the Netslicing BoF

Hi,

We need some volunteers:

- Two people to take minutes
   Minutes do not need to be a verbatim record (there is an audio recording
for that).
   But they should capture the key points made outside of the presentations.
   Minutes can be taken in your own way and then forwarded to the chairs,
but they
   are most effective if you use the Etherpad tool that is available and
allows collaboration.

- One person to be jabber scribe
   RFC 7649 describes this job.
   It can be pretty light, but is important to allow remote participants to
properly play
   a part in the BoF.

Please volunteer now so that we don't waste time at the start of the
meeting.

Thanks,
Adrian

_______________________________________________
Netslices mailing list
Netslices@ietf.org
https://www.ietf.org/mailman/listinfo/netslices


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Thanks Sue,

You're star at minute taking, so I am not about to turn that down!

Another helper would still be good.

Thanks,
Adrian

> -----Original Message-----
> From: Susan Hares [mailto:shares@ndzh.com]
> Sent: 13 July 2017 21:16
> To: adrian@olddog.co.uk; 'Network Slices'
> Cc: netslicing-chairs@ietf.org
> Subject: RE: [Netslices] Looking for volunteers for the Netslicing BoF
> 
> Adrian:
> 
> I will volunteer to either take minute taker or jabber scribe.   I am
> familiar with the work - so either works for me.
> 
> Sue Hares
> 
> -----Original Message-----
> From: Netslices [mailto:netslices-bounces@ietf.org] On Behalf Of Adrian
> Farrel
> Sent: Thursday, July 13, 2017 3:36 PM
> To: Network Slices
> Cc: netslicing-chairs@ietf.org
> Subject: [Netslices] Looking for volunteers for the Netslicing BoF
> 
> Hi,
> 
> We need some volunteers:
> 
> - Two people to take minutes
>    Minutes do not need to be a verbatim record (there is an audio recording
> for that).
>    But they should capture the key points made outside of the presentations.
>    Minutes can be taken in your own way and then forwarded to the chairs,
> but they
>    are most effective if you use the Etherpad tool that is available and
> allows collaboration.
> 
> - One person to be jabber scribe
>    RFC 7649 describes this job.
>    It can be pretty light, but is important to allow remote participants to
> properly play
>    a part in the BoF.
> 
> Please volunteer now so that we don't waste time at the start of the
> meeting.
> 
> Thanks,
> Adrian
> 
> _______________________________________________
> Netslices mailing list
> Netslices@ietf.org
> https://www.ietf.org/mailman/listinfo/netslices


From nobody Thu Jul 13 14:08:59 2017
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From: "Kiran.Makhijani" <Kiran.Makhijani@huawei.com>
To: "adrian@olddog.co.uk" <adrian@olddog.co.uk>, "'Susan Hares'" <shares@ndzh.com>, "'Network Slices'" <netslices@ietf.org>
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Thread-Topic: [Netslices] Looking for volunteers for the Netslicing BoF
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From nobody Fri Jul 14 00:28:27 2017
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From: "Adrian Farrel" <adrian@olddog.co.uk>
To: "'Kiran.Makhijani'" <Kiran.Makhijani@huawei.com>, "'Susan Hares'" <shares@ndzh.com>, "'Network Slices'" <netslices@ietf.org>
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References: <031701d2fc0f$484b2940$d8e17bc0$@olddog.co.uk> <003101d2fc14$d1b967a0$752c36e0$@ndzh.com> <032d01d2fc17$933ea7d0$b9bbf770$@olddog.co.uk> <15200650-1DA8-4B1F-A26D-564F66DEED3D@huawei.com>
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Subject: Re: [Netslices] Looking for volunteers for the Netslicing BoF
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Thanks Kiran!

Adrian

> -----Original Message-----
> From: Kiran.Makhijani [mailto:Kiran.Makhijani@huawei.com]
> Sent: 13 July 2017 22:09
> To: adrian@olddog.co.uk; 'Susan Hares'; 'Network Slices'
> Cc: netslicing-chairs@ietf.org
> Subject: Re: [Netslices] Looking for volunteers for the Netslicing BoF
>=20
> Count me in as a backup, in case you can=E2=80=99t find a second =
volunteer.
> -Kiran
>=20
> On 7/13/17, 1:35 PM, "Netslices on behalf of Adrian Farrel" =
<netslices-
> bounces@ietf.org on behalf of adrian@olddog.co.uk> wrote:
>=20
>     Thanks Sue,
>=20
>     You're star at minute taking, so I am not about to turn that down!
>=20
>     Another helper would still be good.
>=20
>     Thanks,
>     Adrian
>=20
>     > -----Original Message-----
>     > From: Susan Hares [mailto:shares@ndzh.com]
>     > Sent: 13 July 2017 21:16
>     > To: adrian@olddog.co.uk; 'Network Slices'
>     > Cc: netslicing-chairs@ietf.org
>     > Subject: RE: [Netslices] Looking for volunteers for the =
Netslicing BoF
>     >
>     > Adrian:
>     >
>     > I will volunteer to either take minute taker or jabber scribe.   =
I am
>     > familiar with the work - so either works for me.
>     >
>     > Sue Hares
>     >
>     > -----Original Message-----
>     > From: Netslices [mailto:netslices-bounces@ietf.org] On Behalf Of =
Adrian
>     > Farrel
>     > Sent: Thursday, July 13, 2017 3:36 PM
>     > To: Network Slices
>     > Cc: netslicing-chairs@ietf.org
>     > Subject: [Netslices] Looking for volunteers for the Netslicing =
BoF
>     >
>     > Hi,
>     >
>     > We need some volunteers:
>     >
>     > - Two people to take minutes
>     >    Minutes do not need to be a verbatim record (there is an =
audio recording
>     > for that).
>     >    But they should capture the key points made outside of the =
presentations.
>     >    Minutes can be taken in your own way and then forwarded to =
the chairs,
>     > but they
>     >    are most effective if you use the Etherpad tool that is =
available and
>     > allows collaboration.
>     >
>     > - One person to be jabber scribe
>     >    RFC 7649 describes this job.
>     >    It can be pretty light, but is important to allow remote =
participants to
>     > properly play
>     >    a part in the BoF.
>     >
>     > Please volunteer now so that we don't waste time at the start of =
the
>     > meeting.
>     >
>     > Thanks,
>     > Adrian
>     >
>     > _______________________________________________
>     > Netslices mailing list
>     > Netslices@ietf.org
>     > https://www.ietf.org/mailman/listinfo/netslices
>=20
>     _______________________________________________
>     Netslices mailing list
>     Netslices@ietf.org
>     https://www.ietf.org/mailman/listinfo/netslices
>=20



From nobody Fri Jul 14 05:16:54 2017
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Date: Fri, 14 Jul 2017 08:16:45 -0400
Cc: "Kiran.Makhijani" <Kiran.Makhijani@huawei.com>, Susan Hares <shares@ndzh.com>, Network Slices <netslices@ietf.org>, netslicing-chairs@ietf.org
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Subject: Re: [Netslices] Looking for volunteers for the Netslicing BoF
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	Adrian,

	Will there be remote access for the BoF?

	=E2=80=94Tom


> On Jul 14, 2017:3:28 AM, at 3:28 AM, Adrian Farrel =
<adrian@olddog.co.uk> wrote:
>=20
> Thanks Kiran!
>=20
> Adrian
>=20
>> -----Original Message-----
>> From: Kiran.Makhijani [mailto:Kiran.Makhijani@huawei.com]
>> Sent: 13 July 2017 22:09
>> To: adrian@olddog.co.uk; 'Susan Hares'; 'Network Slices'
>> Cc: netslicing-chairs@ietf.org
>> Subject: Re: [Netslices] Looking for volunteers for the Netslicing =
BoF
>>=20
>> Count me in as a backup, in case you can=E2=80=99t find a second =
volunteer.
>> -Kiran
>>=20
>> On 7/13/17, 1:35 PM, "Netslices on behalf of Adrian Farrel" =
<netslices-
>> bounces@ietf.org on behalf of adrian@olddog.co.uk> wrote:
>>=20
>>    Thanks Sue,
>>=20
>>    You're star at minute taking, so I am not about to turn that down!
>>=20
>>    Another helper would still be good.
>>=20
>>    Thanks,
>>    Adrian
>>=20
>>> -----Original Message-----
>>> From: Susan Hares [mailto:shares@ndzh.com]
>>> Sent: 13 July 2017 21:16
>>> To: adrian@olddog.co.uk; 'Network Slices'
>>> Cc: netslicing-chairs@ietf.org
>>> Subject: RE: [Netslices] Looking for volunteers for the Netslicing =
BoF
>>>=20
>>> Adrian:
>>>=20
>>> I will volunteer to either take minute taker or jabber scribe.   I =
am
>>> familiar with the work - so either works for me.
>>>=20
>>> Sue Hares
>>>=20
>>> -----Original Message-----
>>> From: Netslices [mailto:netslices-bounces@ietf.org] On Behalf Of =
Adrian
>>> Farrel
>>> Sent: Thursday, July 13, 2017 3:36 PM
>>> To: Network Slices
>>> Cc: netslicing-chairs@ietf.org
>>> Subject: [Netslices] Looking for volunteers for the Netslicing BoF
>>>=20
>>> Hi,
>>>=20
>>> We need some volunteers:
>>>=20
>>> - Two people to take minutes
>>>   Minutes do not need to be a verbatim record (there is an audio =
recording
>>> for that).
>>>   But they should capture the key points made outside of the =
presentations.
>>>   Minutes can be taken in your own way and then forwarded to the =
chairs,
>>> but they
>>>   are most effective if you use the Etherpad tool that is available =
and
>>> allows collaboration.
>>>=20
>>> - One person to be jabber scribe
>>>   RFC 7649 describes this job.
>>>   It can be pretty light, but is important to allow remote =
participants to
>>> properly play
>>>   a part in the BoF.
>>>=20
>>> Please volunteer now so that we don't waste time at the start of the
>>> meeting.
>>>=20
>>> Thanks,
>>> Adrian
>>>=20
>>> _______________________________________________
>>> Netslices mailing list
>>> Netslices@ietf.org
>>> https://www.ietf.org/mailman/listinfo/netslices
>>=20
>>    _______________________________________________
>>    Netslices mailing list
>>    Netslices@ietf.org
>>    https://www.ietf.org/mailman/listinfo/netslices
>>=20
>=20
>=20
> _______________________________________________
> Netslices mailing list
> Netslices@ietf.org
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To: Thomas Nadeau <tnadeau@lucidvision.com>, Farrel Adrian <adrian@olddog.co.uk>
CC: Kiran.Makhijani <Kiran.Makhijani@huawei.com>, Susan Hares <shares@ndzh.com>, Network Slices <netslices@ietf.org>, <netslicing-chairs@ietf.org>
References: <031701d2fc0f$484b2940$d8e17bc0$@olddog.co.uk> <003101d2fc14$d1b967a0$752c36e0$@ndzh.com> <032d01d2fc17$933ea7d0$b9bbf770$@olddog.co.uk> <15200650-1DA8-4B1F-A26D-564F66DEED3D@huawei.com> <03a801d2fc72$bd72e2e0$3858a8a0$@olddog.co.uk> <6C436CAF-BC6F-4F12-85FB-4D7950FEAA60@lucidvision.com>
From: Gonzalo Camarillo <Gonzalo.Camarillo@ericsson.com>
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Date: Fri, 14 Jul 2017 15:23:54 +0300
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Archived-At: <https://mailarchive.ietf.org/arch/msg/netslices/8QS8tAcp7Z8pmPAhHF_Rq5gBJ44>
X-Mailman-Approved-At: Fri, 14 Jul 2017 05:41:21 -0700
Subject: Re: [Netslices] Looking for volunteers for the Netslicing BoF
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Hi,

nowadays you can follow *all* IETF sessions remotely through Meetecho.
We will not have remote *presenters* this time, though.

Cheers,

Gonzalo

On 14/07/2017 3:16 PM, Thomas Nadeau wrote:
> 
> 	Adrian,
> 
> 	Will there be remote access for the BoF?
> 
> 	—Tom
> 
> 
>> On Jul 14, 2017:3:28 AM, at 3:28 AM, Adrian Farrel <adrian@olddog.co.uk> wrote:
>>
>> Thanks Kiran!
>>
>> Adrian
>>
>>> -----Original Message-----
>>> From: Kiran.Makhijani [mailto:Kiran.Makhijani@huawei.com]
>>> Sent: 13 July 2017 22:09
>>> To: adrian@olddog.co.uk; 'Susan Hares'; 'Network Slices'
>>> Cc: netslicing-chairs@ietf.org
>>> Subject: Re: [Netslices] Looking for volunteers for the Netslicing BoF
>>>
>>> Count me in as a backup, in case you can’t find a second volunteer.
>>> -Kiran
>>>
>>> On 7/13/17, 1:35 PM, "Netslices on behalf of Adrian Farrel" <netslices-
>>> bounces@ietf.org on behalf of adrian@olddog.co.uk> wrote:
>>>
>>>    Thanks Sue,
>>>
>>>    You're star at minute taking, so I am not about to turn that down!
>>>
>>>    Another helper would still be good.
>>>
>>>    Thanks,
>>>    Adrian
>>>
>>>> -----Original Message-----
>>>> From: Susan Hares [mailto:shares@ndzh.com]
>>>> Sent: 13 July 2017 21:16
>>>> To: adrian@olddog.co.uk; 'Network Slices'
>>>> Cc: netslicing-chairs@ietf.org
>>>> Subject: RE: [Netslices] Looking for volunteers for the Netslicing BoF
>>>>
>>>> Adrian:
>>>>
>>>> I will volunteer to either take minute taker or jabber scribe.   I am
>>>> familiar with the work - so either works for me.
>>>>
>>>> Sue Hares
>>>>
>>>> -----Original Message-----
>>>> From: Netslices [mailto:netslices-bounces@ietf.org] On Behalf Of Adrian
>>>> Farrel
>>>> Sent: Thursday, July 13, 2017 3:36 PM
>>>> To: Network Slices
>>>> Cc: netslicing-chairs@ietf.org
>>>> Subject: [Netslices] Looking for volunteers for the Netslicing BoF
>>>>
>>>> Hi,
>>>>
>>>> We need some volunteers:
>>>>
>>>> - Two people to take minutes
>>>>   Minutes do not need to be a verbatim record (there is an audio recording
>>>> for that).
>>>>   But they should capture the key points made outside of the presentations.
>>>>   Minutes can be taken in your own way and then forwarded to the chairs,
>>>> but they
>>>>   are most effective if you use the Etherpad tool that is available and
>>>> allows collaboration.
>>>>
>>>> - One person to be jabber scribe
>>>>   RFC 7649 describes this job.
>>>>   It can be pretty light, but is important to allow remote participants to
>>>> properly play
>>>>   a part in the BoF.
>>>>
>>>> Please volunteer now so that we don't waste time at the start of the
>>>> meeting.
>>>>
>>>> Thanks,
>>>> Adrian
>>>>
>>>> _______________________________________________
>>>> Netslices mailing list
>>>> Netslices@ietf.org
>>>> https://www.ietf.org/mailman/listinfo/netslices
>>>
>>>    _______________________________________________
>>>    Netslices mailing list
>>>    Netslices@ietf.org
>>>    https://www.ietf.org/mailman/listinfo/netslices
>>>
>>
>>
>> _______________________________________________
>> Netslices mailing list
>> Netslices@ietf.org
>> https://www.ietf.org/mailman/listinfo/netslices
> 


From nobody Fri Jul 14 08:52:23 2017
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Reply-To: <adrian@olddog.co.uk>
From: "Adrian Farrel" <adrian@olddog.co.uk>
To: "'Gonzalo Camarillo'" <Gonzalo.Camarillo@ericsson.com>, "'Thomas Nadeau'" <tnadeau@lucidvision.com>
Cc: "'Kiran.Makhijani'" <Kiran.Makhijani@huawei.com>, "'Susan Hares'" <shares@ndzh.com>, "'Network Slices'" <netslices@ietf.org>, <netslicing-chairs@ietf.org>
References: <031701d2fc0f$484b2940$d8e17bc0$@olddog.co.uk> <003101d2fc14$d1b967a0$752c36e0$@ndzh.com> <032d01d2fc17$933ea7d0$b9bbf770$@olddog.co.uk> <15200650-1DA8-4B1F-A26D-564F66DEED3D@huawei.com> <03a801d2fc72$bd72e2e0$3858a8a0$@olddog.co.uk> <6C436CAF-BC6F-4F12-85FB-4D7950FEAA60@lucidvision.com> <1ec935b6-ded3-1a52-5dd8-7e13bd86bbc2@ericsson.com>
In-Reply-To: <1ec935b6-ded3-1a52-5dd8-7e13bd86bbc2@ericsson.com>
Date: Fri, 14 Jul 2017 16:52:07 +0100
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> nowadays you can follow *all* IETF sessions remotely through Meetecho.
> We will not have remote *presenters* this time, though.

And, to be clear, that means you can watch audio and listen to the video =
(-;
And, should the whim take you and assuming there is time, you can join =
the remote mic line and speak.

A
> > 	Adrian,
> >
> > 	Will there be remote access for the BoF?


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From: "Flinck, Hannu (Nokia - FI/Espoo)" <hannu.flinck@nokia-bell-labs.com>
To: GENG Liang <liang.geng@hotmail.com>, "netslices@ietf.org" <netslices@ietf.org>
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Archived-At: <https://mailarchive.ietf.org/arch/msg/netslices/0oMnc9wbXGTl04evidckvwh1bZY>
Subject: Re: [Netslices] FW: New Version Notification for draft-flinck-slicing-management-00.txt
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Hello Liang

Sorry about late response. I have been out of office few past weeks.

Even if I am  not too particular about the terminology we still need to hav=
e a common understanding how the various concepts relate especially at  the=
 boarders of the domains across different SDOs. This is important to identi=
fy caps and ensure interoperability.

Best regards
Hannu


From: GENG Liang [mailto:liang.geng@hotmail.com]
Sent: Thursday, July 06, 2017 1:26 PM
To: Flinck, Hannu (Nokia - FI/Espoo) <hannu.flinck@nokia-bell-labs.com>; ne=
tslices@ietf.org
Subject: Re: [Netslices] FW: New Version Notification for draft-flinck-slic=
ing-management-00.txt

Hi Hannu,

I like the idea of adding ETSI MANO to the picture and distinguish PNF and =
VNF since the Orchestration of these different types of resources in a netw=
ork slice instance may be very different. We can discuss further to see how=
 the Framwork document address your concerns

However, the SA5 terms NSMF (which is E2E orchestration in NS-Framework) an=
d NSSMF (which is domain orchestration in NS-Framework) may need further di=
scussion. I am slightly worried about directly using terms defined in other=
 SDOs because you never know what they possibly mean tomorrow.

Best wishes
Liang


________________________________
Liang GENG
China Mobile Research Institute

From: Flinck, Hannu (Nokia - FI/Espoo)<mailto:hannu.flinck@nokia-bell-labs.=
com>
Date: 2017-07-04 23:56
To: netslices@ietf.org<mailto:netslices@ietf.org>
Subject: [Netslices] FW: New Version Notification for draft-flinck-slicing-=
management-00.txt


A new version of I-D, draft-flinck-slicing-management-00.txt
has been successfully submitted by Hannu Flinck and posted to the
IETF repository.

Name: draft-flinck-slicing-management
Revision: 00
Title: Network Slicing Management and Orchestration
Document date: 2017-07-03
Group: Individual Submission
Pages: 10
URL:            https://www.ietf.org/internet-drafts/draft-flinck-slicing-m=
anagement-00.txt
Status:         https://datatracker.ietf.org/doc/draft-flinck-slicing-manag=
ement/
Htmlized:       https://tools.ietf.org/html/draft-flinck-slicing-management=
-00
Htmlized:       https://datatracker.ietf.org/doc/html/draft-flinck-slicing-=
management-00


Abstract:
   Network Slicing is worked in multiple SDOs from different view
   points.  As network slicing is an end-to-end topic, this draft
   proposes that network slices architecture [NS-Framework] aligns with
   the work done in NGMN, 3GPP and ETSI with relation to management and
   orchestration.  The key aspect that this draft makes is the rational
   for role and need for Network Slice Management Function (NSMF) entity
   that operates above Network Virtualization Function Orchestrator and
   PNFs Management Functions.  NSMF needs to support different
   abstractions of resources and to offer access to different management
   entities.




Please note that it may take a couple of minutes from the time of submissio=
n
until the htmlized version and diff are available at tools.ietf.org.

The IETF Secretariat

_______________________________________________
Netslices mailing list
Netslices@ietf.org<mailto:Netslices@ietf.org>
https://www.ietf.org/mailman/listinfo/netslices

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<div class=3D"WordSection1">
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,sans-serif;mso-fareast-language:EN-US">Hello Lia=
ng<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"mso-fareast-language:E=
N-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"mso-fareast-language:E=
N-US">Sorry about late response. I have been out of office few past weeks.<=
o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"mso-fareast-language:E=
N-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"mso-fareast-language:E=
N-US">Even if I am&nbsp; not too particular about the terminology we still =
need to have a common understanding how the various concepts relate especia=
lly at&nbsp; the boarders of the domains across
 different SDOs. This is important to identify caps and ensure interoperabi=
lity.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"mso-fareast-language:E=
N-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"mso-fareast-language:E=
N-US">Best regards<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"mso-fareast-language:E=
N-US">Hannu &nbsp;&nbsp;<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"mso-fareast-language:E=
N-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"mso-fareast-language:E=
N-US"><o:p>&nbsp;</o:p></span></p>
<div>
<div style=3D"border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm =
0cm 0cm">
<p class=3D"MsoNormal"><b><span lang=3D"EN-US" style=3D"font-size:11.0pt;fo=
nt-family:&quot;Calibri&quot;,sans-serif">From:</span></b><span lang=3D"EN-=
US" style=3D"font-size:11.0pt;font-family:&quot;Calibri&quot;,sans-serif"> =
GENG Liang [mailto:liang.geng@hotmail.com]
<br>
<b>Sent:</b> Thursday, July 06, 2017 1:26 PM<br>
<b>To:</b> Flinck, Hannu (Nokia - FI/Espoo) &lt;hannu.flinck@nokia-bell-lab=
s.com&gt;; netslices@ietf.org<br>
<b>Subject:</b> Re: [Netslices] FW: New Version Notification for draft-flin=
ck-slicing-management-00.txt<o:p></o:p></span></p>
</div>
</div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;font-family:&quot;Ta=
homa&quot;,sans-serif;color:black">Hi Hannu,<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;font-family:&quot;Ta=
homa&quot;,sans-serif;color:black"><o:p>&nbsp;</o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;font-family:&quot;Ta=
homa&quot;,sans-serif;color:black">I like the idea of adding ETSI MANO to t=
he picture and distinguish PNF and VNF since the Orchestration of these dif=
ferent types of resources in a network slice instance
 may be very different. We can discuss further to see how the Framwork docu=
ment address your concerns<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;font-family:&quot;Ta=
homa&quot;,sans-serif;color:black"><o:p>&nbsp;</o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;font-family:&quot;Ta=
homa&quot;,sans-serif;color:black">However, the SA5 terms NSMF (which is E2=
E orchestration in&nbsp;<span style=3D"background:white">NS-Framework) and =
NSSMF (which is domain orchestration in NS-Framework)
 may need further discussion. I am slightly worried about directly using te=
rms defined in other SDOs because you never know what they possibly mean to=
morrow.</span><o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;font-family:&quot;Ta=
homa&quot;,sans-serif;color:black"><o:p>&nbsp;</o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;font-family:&quot;Ta=
homa&quot;,sans-serif;color:black;background:white">Best wishes</span><span=
 style=3D"font-size:10.5pt;font-family:&quot;Tahoma&quot;,sans-serif;color:=
black"><o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;font-family:&quot;Ta=
homa&quot;,sans-serif;color:black;background:white">Liang</span><span style=
=3D"font-size:10.5pt;font-family:&quot;Tahoma&quot;,sans-serif;color:black"=
><o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;font-family:&quot;Ta=
homa&quot;,sans-serif;color:black"><o:p>&nbsp;</o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;font-family:&quot;Ta=
homa&quot;,sans-serif;color:black"><o:p>&nbsp;</o:p></span></p>
</div>
<div class=3D"MsoNormal"><span style=3D"font-size:10.5pt;font-family:&quot;=
Tahoma&quot;,sans-serif;color:black">
<hr size=3D"1" width=3D"210" style=3D"width:157.5pt" noshade=3D"" style=3D"=
color:#B5C4DF" align=3D"left">
</span></div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;font-family:&quot;Ta=
homa&quot;,sans-serif;color:black">Liang GENG
<o:p></o:p></span></p>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;font-family:&quot;Ta=
homa&quot;,sans-serif;color:black">China Mobile Research Institute<o:p></o:=
p></span></p>
</div>
</div>
<blockquote style=3D"margin-left:6.0pt">
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;font-family:&quot;Ta=
homa&quot;,sans-serif;color:black">&nbsp;<o:p></o:p></span></p>
</div>
<div style=3D"border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm =
0cm 0cm">
<div>
<div>
<p class=3D"MsoNormal" style=3D"background:#EFEFEF"><b><span style=3D"font-=
size:9.0pt;font-family:&quot;Tahoma&quot;,sans-serif;color:black">From:</sp=
an></b><span style=3D"font-size:9.0pt;font-family:&quot;Tahoma&quot;,sans-s=
erif;color:black">&nbsp;<a href=3D"mailto:hannu.flinck@nokia-bell-labs.com"=
>Flinck,
 Hannu (Nokia - FI/Espoo)</a><o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"background:#EFEFEF"><b><span style=3D"font-=
size:9.0pt;font-family:&quot;Tahoma&quot;,sans-serif;color:black">Date:</sp=
an></b><span style=3D"font-size:9.0pt;font-family:&quot;Tahoma&quot;,sans-s=
erif;color:black">&nbsp;2017-07-04&nbsp;23:56<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"background:#EFEFEF"><b><span style=3D"font-=
size:9.0pt;font-family:&quot;Tahoma&quot;,sans-serif;color:black">To:</span=
></b><span style=3D"font-size:9.0pt;font-family:&quot;Tahoma&quot;,sans-ser=
if;color:black">&nbsp;<a href=3D"mailto:netslices@ietf.org">netslices@ietf.=
org</a><o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"background:#EFEFEF"><b><span style=3D"font-=
size:9.0pt;font-family:&quot;Tahoma&quot;,sans-serif;color:black">Subject:<=
/span></b><span style=3D"font-size:9.0pt;font-family:&quot;Tahoma&quot;,san=
s-serif;color:black">&nbsp;[Netslices] FW: New Version Notification
 for draft-flinck-slicing-management-00.txt<o:p></o:p></span></p>
</div>
</div>
</div>
<div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;font-family:&quot;Ta=
homa&quot;,sans-serif;color:black">&nbsp;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;font-family:&quot;Ta=
homa&quot;,sans-serif;color:black">&nbsp;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;font-family:&quot;Ta=
homa&quot;,sans-serif;color:black">A new version of I-D, draft-flinck-slici=
ng-management-00.txt<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;font-family:&quot;Ta=
homa&quot;,sans-serif;color:black">has been successfully submitted by Hannu=
 Flinck and posted to the<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;font-family:&quot;Ta=
homa&quot;,sans-serif;color:black">IETF repository.<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;font-family:&quot;Ta=
homa&quot;,sans-serif;color:black">&nbsp;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;font-family:&quot;Ta=
homa&quot;,sans-serif;color:black">Name: draft-flinck-slicing-management<o:=
p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;font-family:&quot;Ta=
homa&quot;,sans-serif;color:black">Revision: 00<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;font-family:&quot;Ta=
homa&quot;,sans-serif;color:black">Title: Network Slicing Management and Or=
chestration<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;font-family:&quot;Ta=
homa&quot;,sans-serif;color:black">Document date: 2017-07-03<o:p></o:p></sp=
an></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;font-family:&quot;Ta=
homa&quot;,sans-serif;color:black">Group: Individual Submission<o:p></o:p><=
/span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;font-family:&quot;Ta=
homa&quot;,sans-serif;color:black">Pages: 10<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;font-family:&quot;Ta=
homa&quot;,sans-serif;color:black">URL:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<a href=3D"https://www.ietf.org/internet-drafts/draft-flinck-slicing-manage=
ment-00.txt">
https://www.ietf.org/internet-drafts/draft-flinck-slicing-management-00.txt=
</a><o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;font-family:&quot;Ta=
homa&quot;,sans-serif;color:black">Status:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;
<a href=3D"https://datatracker.ietf.org/doc/draft-flinck-slicing-management=
/">https://datatracker.ietf.org/doc/draft-flinck-slicing-management/</a><o:=
p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;font-family:&quot;Ta=
homa&quot;,sans-serif;color:black">Htmlized:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;
<a href=3D"https://tools.ietf.org/html/draft-flinck-slicing-management-00">=
https://tools.ietf.org/html/draft-flinck-slicing-management-00</a><o:p></o:=
p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;font-family:&quot;Ta=
homa&quot;,sans-serif;color:black">Htmlized:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;
<a href=3D"https://datatracker.ietf.org/doc/html/draft-flinck-slicing-manag=
ement-00">
https://datatracker.ietf.org/doc/html/draft-flinck-slicing-management-00</a=
><o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;font-family:&quot;Ta=
homa&quot;,sans-serif;color:black">&nbsp;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;font-family:&quot;Ta=
homa&quot;,sans-serif;color:black">&nbsp;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;font-family:&quot;Ta=
homa&quot;,sans-serif;color:black">Abstract:<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;font-family:&quot;Ta=
homa&quot;,sans-serif;color:black">&nbsp;&nbsp; Network Slicing is worked i=
n multiple SDOs from different view<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;font-family:&quot;Ta=
homa&quot;,sans-serif;color:black">&nbsp;&nbsp; points.&nbsp; As network sl=
icing is an end-to-end topic, this draft<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;font-family:&quot;Ta=
homa&quot;,sans-serif;color:black">&nbsp;&nbsp; proposes that network slice=
s architecture [NS-Framework] aligns with<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;font-family:&quot;Ta=
homa&quot;,sans-serif;color:black">&nbsp;&nbsp; the work done in NGMN, 3GPP=
 and ETSI with relation to management and<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;font-family:&quot;Ta=
homa&quot;,sans-serif;color:black">&nbsp;&nbsp; orchestration.&nbsp; The ke=
y aspect that this draft makes is the rational<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;font-family:&quot;Ta=
homa&quot;,sans-serif;color:black">&nbsp;&nbsp; for role and need for Netwo=
rk Slice Management Function (NSMF) entity<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;font-family:&quot;Ta=
homa&quot;,sans-serif;color:black">&nbsp;&nbsp; that operates above Network=
 Virtualization Function Orchestrator and<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;font-family:&quot;Ta=
homa&quot;,sans-serif;color:black">&nbsp;&nbsp; PNFs Management Functions.&=
nbsp; NSMF needs to support different<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;font-family:&quot;Ta=
homa&quot;,sans-serif;color:black">&nbsp;&nbsp; abstractions of resources a=
nd to offer access to different management<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;font-family:&quot;Ta=
homa&quot;,sans-serif;color:black">&nbsp;&nbsp; entities.<o:p></o:p></span>=
</p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;font-family:&quot;Ta=
homa&quot;,sans-serif;color:black">&nbsp;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;font-family:&quot;Ta=
homa&quot;,sans-serif;color:black">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;font-family:&quot;Ta=
homa&quot;,sans-serif;color:black">&nbsp;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;font-family:&quot;Ta=
homa&quot;,sans-serif;color:black">&nbsp;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;font-family:&quot;Ta=
homa&quot;,sans-serif;color:black">Please note that it may take a couple of=
 minutes from the time of submission<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;font-family:&quot;Ta=
homa&quot;,sans-serif;color:black">until the htmlized version and diff are =
available at tools.ietf.org.<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;font-family:&quot;Ta=
homa&quot;,sans-serif;color:black">&nbsp;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;font-family:&quot;Ta=
homa&quot;,sans-serif;color:black">The IETF Secretariat<o:p></o:p></span></=
p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;font-family:&quot;Ta=
homa&quot;,sans-serif;color:black">&nbsp;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;font-family:&quot;Ta=
homa&quot;,sans-serif;color:black">________________________________________=
_______<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;font-family:&quot;Ta=
homa&quot;,sans-serif;color:black">Netslices mailing list<o:p></o:p></span>=
</p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;font-family:&quot;Ta=
homa&quot;,sans-serif;color:black"><a href=3D"mailto:Netslices@ietf.org">Ne=
tslices@ietf.org</a><o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;font-family:&quot;Ta=
homa&quot;,sans-serif;color:black"><a href=3D"https://www.ietf.org/mailman/=
listinfo/netslices">https://www.ietf.org/mailman/listinfo/netslices</a><o:p=
></o:p></span></p>
</div>
</div>
</blockquote>
</div>
</body>
</html>

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From: "Flinck, Hannu (Nokia - FI/Espoo)" <hannu.flinck@nokia-bell-labs.com>
To: GENG Liang <liang.geng@hotmail.com>, "mohamed.boucadair@orange.com" <mohamed.boucadair@orange.com>, "netslices@ietf.org" <netslices@ietf.org>
Thread-Topic: Re: [Netslices] New Version Notification for draft-flinck-slicing-management-00.txt
Thread-Index: AQHS9AWqkasVzMuXpES7cgzsAwtm3qJXu8Rw
Date: Mon, 17 Jul 2017 08:00:25 +0000
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Archived-At: <https://mailarchive.ietf.org/arch/msg/netslices/ZdQKmjF_AJqmXmcYHKa7c916PbE>
Subject: Re: [Netslices] New Version Notification for draft-flinck-slicing-management-00.txt
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From nobody Mon Jul 17 01:05:51 2017
Return-Path: <hannu.flinck@nokia-bell-labs.com>
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From: "Flinck, Hannu (Nokia - FI/Espoo)" <hannu.flinck@nokia-bell-labs.com>
To: "mohamed.boucadair@orange.com" <mohamed.boucadair@orange.com>, Kiran.Makhijani <Kiran.Makhijani@huawei.com>, Gino Carrozzo <g.carrozzo@nextworks.it>
CC: "netslices@ietf.org" <netslices@ietf.org>
Thread-Topic: [Netslices] New Version Notification for draft-flinck-slicing-management-00.txt
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Date: Mon, 17 Jul 2017 08:05:42 +0000
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Archived-At: <https://mailarchive.ietf.org/arch/msg/netslices/79CsPP1gyoYHcj4x5RHBGmCe9rQ>
Subject: Re: [Netslices] New Version Notification for draft-flinck-slicing-management-00.txt
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From nobody Mon Jul 17 09:17:04 2017
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Reply-To: <adrian@olddog.co.uk>
From: "Adrian Farrel" <adrian@olddog.co.uk>
To: "Network Slices" <netslices@ietf.org>
Date: Mon, 17 Jul 2017 17:16:54 +0100
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Subject: [Netslices] Thanks for the BoF
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Thanks to all who contributed to the BoF for clear and timely work.

I thought the meeting had a fairy tale ending [1]

We will post draft minutes SOON [2] and leave it to the AD to work out what
comes next.

Adrian

[1] https://www.feedaread.com/profiles/8604/
[2] https://datatracker.ietf.org/doc/draft-farrel-soon/


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Date: Tue, 18 Jul 2017 11:11:01 +0100
Cc: Benoit Claise <bclaise@cisco.com>, Warren Kumari <warren@kumari.net>, Terry Manderson <terry.manderson@icann.org>, Adrian Farrel <adrian@olddog.co.uk>, Gonzalo Camarillo <Gonzalo.Camarillo@ericsson.com>
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Archived-At: <https://mailarchive.ietf.org/arch/msg/netslices/cTfQqvLV29FPYoc8DkkbKaMBIVM>
Subject: Re: [Netslices] NetSlicing work review - meeting invitation for Thursday 20th July morning 8:00am - 9:00am at IETF99
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18th July 2017

Hi All

Thank you for your participation in yesterday NetSlicing BoF.

In order to move forward the BoF proponents (25) and other willing =
volunteers to contribute to the NetSlicing work at IETF who are present =
in Prague are kindly invited meet initially on Thursday 20th July 2017 =
morning to discuss a reduce scope for near future standardisation work, =
probably including:

=E2=80=A2 slice-oriented management & orchestration =20
=E2=80=A2 unified data-set regarding to slicing abstraction from =
lower-layer infrastructure  (i.e. either per use case or abstraction =
across some lower-layer infrastructures)=20
=E2=80=A2 unified templates & system models


 'Attendee Sign-Up Meeting Room=E2=80=99 was set-up for this meeting on =
Thursday 20th July morning 8:00am - 9:00am. The meeting room is Istanbul =
room on the Lobby Level.


See you there.

Best Cheers
Alex=


From nobody Tue Jul 18 12:43:21 2017
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From: "Sprecher, Nurit (Nokia - IL/Kfar Sava)" <nurit.sprecher@nokia.com>
To: Network Slices <netslices@ietf.org>
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Archived-At: <https://mailarchive.ietf.org/arch/msg/netslices/z2tS_TrQynQTz6CkY_ZWD_-Mo1s>
Subject: [Netslices] 3GPP Requirements on Network Slicing
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Hello,
I have looked at the slides 3GPP Network Slicing that were presented by the=
 #GPP CT chairman (slides-99-netslicing-georg-mayer-3gpp-network-slicing-04=
<https://www.ietf.org/proceedings/99/slides/slides-99-netslicing-georg-maye=
r-3gpp-network-slicing-04.pdf>), which say that 3GPP does not have at the m=
oment dedicated requirements for any kind of IETF protocol or activity rela=
ted to nw-slicing.
This correctly describes the current situation in CT and RAN, but as mentio=
ned in my earlier mail, I want to re-clarify that SA5 intends to provide li=
nk requirements to the transport network management system. I think the IET=
F may see soon a request for collaboration with 3GPP on this topic. Please =
see http://www.3gpp.org/ftp/tsg_sa/WG5_TM/TSGS5_111_Bis/Docs/S5A-170313.zip
"SA5 currently understands that the 3GPP management system will manage only=
 the CN part and RAN part of the network slice instances based on the netwo=
rk slice description in 3GPP SA1. Regarding the TN part supporting connecti=
vity within and between CN and RAN parts, 3GPP management system will provi=
de link requirements (e.g. topology, QOS parameters) to the TN management s=
ystem. SA5 will identify relevant standard groups and industry fora, and tr=
igger the cooperation discussion addressing the TN management."
Best regards,
Nurit

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<p class=3D"MsoNormal" style=3D"margin-top:3.0pt;line-height:115%">Hello,<o=
:p></o:p></p>
<p class=3D"MsoNormal" style=3D"margin-top:3.0pt;line-height:115%">I have l=
ooked at the slides 3GPP Network Slicing that were presented by the #GPP CT=
 chairman (<a href=3D"https://www.ietf.org/proceedings/99/slides/slides-99-=
netslicing-georg-mayer-3gpp-network-slicing-04.pdf">slides-99-netslicing-ge=
org-mayer-3gpp-network-slicing-04</a>),
 which say that 3GPP does not have at the moment dedicated requirements for=
 any kind of IETF protocol or activity related to nw-slicing.
<o:p></o:p></p>
<p class=3D"MsoNormal" style=3D"margin-top:3.0pt;line-height:115%">This cor=
rectly describes the current situation in CT and RAN, but as mentioned in m=
y earlier mail, I want to re-clarify that
<b>SA5 intends to provide link requirements to the transport network manage=
ment system.
</b>I think the IETF may see soon a request for collaboration with 3GPP on =
this topic. Please see
<u><span style=3D"font-size:10.0pt;line-height:115%;font-family:&quot;Segoe=
 UI&quot;,sans-serif;color:blue"><a href=3D"http://www.3gpp.org/ftp/tsg_sa/=
WG5_TM/TSGS5_111_Bis/Docs/S5A-170313.zip">http://www.3gpp.org/ftp/tsg_sa/WG=
5_TM/TSGS5_111_Bis/Docs/S5A-170313.zip</a><o:p></o:p></span></u></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:3.0pt;margin-right:0in;m=
argin-bottom:0in;margin-left:.5in;margin-bottom:.0001pt;line-height:115%">
<span style=3D"mso-fareast-language:ZH-CN">&#8220;SA5 currently understands=
 that the 3GPP management system will manage only the CN part and RAN part =
of the network slice instances based on the network slice description in 3G=
PP SA1. Regarding the TN part supporting
 connectivity within and between CN and RAN parts, 3GPP management system w=
ill provide link requirements (e.g. topology, QOS parameters) to the TN man=
agement system. SA5 will identify relevant standard groups and industry for=
a, and trigger the cooperation discussion
 addressing the TN management.&#8221; <o:p></o:p></span></p>
<p class=3D"MsoNormal" style=3D"margin-top:3.0pt;line-height:115%">Best reg=
ards,<o:p></o:p></p>
<p class=3D"MsoNormal" style=3D"margin-top:3.0pt;line-height:115%">Nurit<o:=
p></o:p></p>
</div>
</body>
</html>

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From nobody Thu Jul 20 15:46:17 2017
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From: "Adrian Farrel" <adrian@olddog.co.uk>
To: "Network Slices" <netslices@ietf.org>
Cc: <Gonzalo.Camarillo@ericsson.com>, <bclaise@cisco.com>, "Warren Kumari" <warren@kumari.net>
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Subject: [Netslices] Netslices draft minutes posted
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https://www.ietf.org/proceedings/99/minutes/minutes-99-netslicing-00.txt

Comments welcome.
(Minutes re what you said, not what you wish you said ;-)

Many thanks to the minute takers: Sue, Kiran, and Ignas.

Adrian



From nobody Sun Jul 23 14:00:34 2017
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Archived-At: <https://mailarchive.ietf.org/arch/msg/netslices/LpWwA5_js57PBdzcET5skDO5i_o>
Subject: Re: [Netslices] Network Slicing next steps / call on Wednesday 26th July 2017 at 14:00 UK time
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23rd July 2017


Hi All=20

Thank you for your participation in the NetSlicing BoF of Monday 17th =
July 2017 at IETF99 in Prague.

In order to move forward the willing volunteers who would like to =
contribute to the NetSlicing work for IETF100 are kindly invited to the =
next NetSlicing proponents call scheduled for Wednesday 26th July 2017 =
at 14:00 UK time.

Agenda would include a review of the work planed for IETF100 which may =
include a number of deliverables (drafts):

=E2=80=A2 An interface (YANG Data Model) from the management and =
orchestration system towards the transport part (i.e., new IPV6 based =
protocol to enable slicing in the transport part: ACTN, DETNET, Segment =
Routing =E2=80=A6.)

=E2=80=A2 Description of an enhanced network underlay(s) which would be =
of utility for a use case or a group of use cases (i.e. guarantees for =
isolation; part of VPN++ as required) and interfacing towards the =
management and orchestration system.=20

=E2=80=A2 Resource specification (abstract way of representing the =
transport) and an interface towards the management and orchestration =
system.

=E2=80=A2 NS Management & Orchestration:

 - Protocol based E2E orchestration /coordination enabling =
composition/decomposition of net slices
 - Protocol based monitoring & discovery of net slicing
 - Common net slicing template [i.e. 1. description of Service Instance =
Components; 2. description of Network Functions Instance Components; 3. =
description of connectivity, compute, storage resources; 4. description =
of Slice Element Manager and Capability exposure component]



If interested please send me (a.galis@ucl.ac.uk) a message for inclusion =
in the Net Slicing call list for the next period (i.e. July - November =
2017)

Thank you in advance

Best Regards
Alex




From nobody Thu Jul 27 10:32:06 2017
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Subject: [Netslices] netslicing/netslices: Potential next steps
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Dear all,

Thanks for all who contributed to the netslicing BoF: the document 
authors, the presenters, the participants, and the chairs. During this 
week, next to BoF itself, I've had multiple opportunities to speak about 
netslicing, with some BoF proponents, with the IAB shepherds, and with 
the IESG/IAB on Friday afternoon, etc. This helped me understanding the 
different points of views and clarified some aspects.

It's true that the network slicing has got a specific meaning in the 
context of 5G, but, as Georg (as liaison) stressed: there are no 3GPP 
requirements for the IETF at this point in time. Nevertheless, there are 
parts that the IETF should look at. And there are parts of the network 
slicing concept that are already being worked on at the IETF. ACTN comes 
to mind, but also DETNET, and I heard of VPN+. The individual work in 
WGs should continue and potentially be extended.

Note that I carefully used the "network slicing concept" term in the 
previous sentence. As one important next step, it would nice to focus on 
a common "network slicing" definition, at least its meaning for the IETF.

As mentioned during the BoF, this is not the IETF role to define a 
complete orchestrator, controller, or NMS/OSS. This should be developed 
by an opensource project. However, what would be a practical next step 
is to specify a kind of network slicing template, with the envisioned 
required parameters. From there, we could determine what's missing when 
we try to map it to a specific (IETF) technologies.

Let me make up an (hopefully simple) example: I would like to have a 
network slice with a guaranteed bandwidth b, end-to-end jitter j, packet 
loss p, end-to-end max delay d. Do we even those abilities in the 
underlying technologies?

Regards, Benoit (as the BoF responsible AD)



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Date: Thu, 27 Jul 2017 10:47:43 -0700
From: Jeff Tantsura <jefftant.ietf@gmail.com>
To: Benoit Claise <bclaise@cisco.com>, <NetSlices@ietf.org>, Jari Arkko <jari.arkko@piuha.net>
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Thread-Topic: [Netslices] netslicing/netslices: Potential next steps
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Subject: Re: [Netslices] netslicing/netslices: Potential next steps
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Benoit,

Thanks for sharing.
As discussed =E2=80=93 we will continue working towards narrowed down and realist=
ic set of requirements towards IETF, that should guide all the great work ha=
ppening across different area=E2=80=99s/wg=E2=80=99s.

>From IAB that would be Jari and myself.

Cheers,
Jeff (as the BoF IAB shepherd)

-----Original Message-----
From: Netslices <netslices-bounces@ietf.org> on behalf of Benoit Claise <bc=
laise@cisco.com>
Date: Thursday, July 27, 2017 at 10:32
To: <NetSlices@ietf.org>
Subject: [Netslices] netslicing/netslices: Potential next steps

    Dear all,
   =20
    Thanks for all who contributed to the netslicing BoF: the document=20
    authors, the presenters, the participants, and the chairs. During this=20
    week, next to BoF itself, I've had multiple opportunities to speak abou=
t=20
    netslicing, with some BoF proponents, with the IAB shepherds, and with=20
    the IESG/IAB on Friday afternoon, etc. This helped me understanding the=
=20
    different points of views and clarified some aspects.
   =20
    It's true that the network slicing has got a specific meaning in the=20
    context of 5G, but, as Georg (as liaison) stressed: there are no 3GPP=20
    requirements for the IETF at this point in time. Nevertheless, there ar=
e=20
    parts that the IETF should look at. And there are parts of the network=20
    slicing concept that are already being worked on at the IETF. ACTN come=
s=20
    to mind, but also DETNET, and I heard of VPN+. The individual work in=20
    WGs should continue and potentially be extended.
   =20
    Note that I carefully used the "network slicing concept" term in the=20
    previous sentence. As one important next step, it would nice to focus o=
n=20
    a common "network slicing" definition, at least its meaning for the IET=
F.
   =20
    As mentioned during the BoF, this is not the IETF role to define a=20
    complete orchestrator, controller, or NMS/OSS. This should be developed=
=20
    by an opensource project. However, what would be a practical next step=20
    is to specify a kind of network slicing template, with the envisioned=20
    required parameters. From there, we could determine what's missing when=
=20
    we try to map it to a specific (IETF) technologies.
   =20
    Let me make up an (hopefully simple) example: I would like to have a=20
    network slice with a guaranteed bandwidth b, end-to-end jitter j, packe=
t=20
    loss p, end-to-end max delay d. Do we even those abilities in the=20
    underlying technologies?
   =20
    Regards, Benoit (as the BoF responsible AD)
   =20
   =20
    _______________________________________________
    Netslices mailing list
    Netslices@ietf.org
    https://www.ietf.org/mailman/listinfo/netslices
   =20



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From: Sheng Jiang <jiangsheng@huawei.com>
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From: Jeff Tantsura <jefftant.ietf@gmail.com>
Date: Sun, 30 Jul 2017 20:51:29 +0000
Message-ID: <CAFAzdPWXX9UesP316Qyu-aj-0duFoRKapoaLa5waFd_5uFZvkw@mail.gmail.com>
To: Sheng Jiang <jiangsheng@huawei.com>, Benoit Claise <bclaise@cisco.com>,  Jari Arkko <jari.arkko@piuha.net>
Cc: IAB <iab-bounces@iab.org>, "NetSlices@ietf.org" <NetSlices@ietf.org>,  "qiangli (D)" <qiangli3@huawei.com>, Yudelei <yudelei@huawei.com>
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Archived-At: <https://mailarchive.ietf.org/arch/msg/netslices/qb1Nx3ky15O6Ue6CJWFrLeQ5R4o>
Subject: Re: [Netslices] netslicing/netslices: Potential next steps
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Sheng,

Great, thanks for the update.
Would be great if you'd bring your work to IETF at a rather early stage,
otherwise there could be a rather large gap, between what we will be doing
in IETF vs your team's work. Also think about collaboration with all the
efforts you have mentioned above and how to build on top (API's, data
models) rather than trying to reinvent the wheel.
IAB/IESG will continuously direct the overall effort.

Looking forward to seeing your work.

Thanks,
Jeff
On Fri, Jul 28, 2017 at 19:00 Sheng Jiang <jiangsheng@huawei.com> wrote:

> Benoit & Jeff,
>
> Thanks for your clear advices and instructions, which we will follow. For
> me, a unified slice template/object and its management are modest work fo=
r
> IETF to start work. My team is working on such design and correspondent
> implementation. The implementation is also including orchestration
> algorithms and mapping the unified slice template/object to one/multiple
> specific network infrastructures, for which VPN, Virtual router, Detnet,
> ACTN, and other new technologies are in our consideration. We are plannin=
g
> a demonstration on this for IETF 100 Bits-N-Bites, too.
>
> Many thanks and best regards,
>
> Sheng
>
> > -----Original Message-----
> > From: Netslices [mailto:netslices-bounces@ietf.org] On Behalf Of Jeff
> Tantsura
> > Sent: Friday, July 28, 2017 1:48 AM
> > To: Benoit Claise; NetSlices@ietf.org; Jari Arkko
> > Cc: IAB
> > Subject: Re: [Netslices] netslicing/netslices: Potential next steps
> >
> > Benoit,
> >
> > Thanks for sharing.
> > As discussed =E2=80=93 we will continue working towards narrowed down a=
nd
> realistic
> > set of requirements towards IETF, that should guide all the great work
> > happening across different area=E2=80=99s/wg=E2=80=99s.
> >
> > >From IAB that would be Jari and myself.
> >
> > Cheers,
> > Jeff (as the BoF IAB shepherd)
> >
> > -----Original Message-----
> > From: Netslices <netslices-bounces@ietf.org> on behalf of Benoit Claise
> > <bclaise@cisco.com>
> > Date: Thursday, July 27, 2017 at 10:32
> > To: <NetSlices@ietf.org>
> > Subject: [Netslices] netslicing/netslices: Potential next steps
> >
> >     Dear all,
> >
> >     Thanks for all who contributed to the netslicing BoF: the document
> >     authors, the presenters, the participants, and the chairs. During
> this
> >     week, next to BoF itself, I've had multiple opportunities to speak
> about
> >     netslicing, with some BoF proponents, with the IAB shepherds, and
> with
> >     the IESG/IAB on Friday afternoon, etc. This helped me understanding
> the
> >     different points of views and clarified some aspects.
> >
> >     It's true that the network slicing has got a specific meaning in th=
e
> >     context of 5G, but, as Georg (as liaison) stressed: there are no 3G=
PP
> >     requirements for the IETF at this point in time. Nevertheless, ther=
e
> are
> >     parts that the IETF should look at. And there are parts of the
> network
> >     slicing concept that are already being worked on at the IETF. ACTN
> comes
> >     to mind, but also DETNET, and I heard of VPN+. The individual work =
in
> >     WGs should continue and potentially be extended.
> >
> >     Note that I carefully used the "network slicing concept" term in th=
e
> >     previous sentence. As one important next step, it would nice to
> focus on
> >     a common "network slicing" definition, at least its meaning for the
> IETF.
> >
> >     As mentioned during the BoF, this is not the IETF role to define a
> >     complete orchestrator, controller, or NMS/OSS. This should be
> developed
> >     by an opensource project. However, what would be a practical next
> step
> >     is to specify a kind of network slicing template, with the envision=
ed
> >     required parameters. From there, we could determine what's missing
> > when
> >     we try to map it to a specific (IETF) technologies.
> >
> >     Let me make up an (hopefully simple) example: I would like to have =
a
> >     network slice with a guaranteed bandwidth b, end-to-end jitter j,
> packet
> >     loss p, end-to-end max delay d. Do we even those abilities in the
> >     underlying technologies?
> >
> >     Regards, Benoit (as the BoF responsible AD)
> >
> >
> >     _______________________________________________
> >     Netslices mailing list
> >     Netslices@ietf.org
> >     https://www.ietf.org/mailman/listinfo/netslices
> >
> >
> >
> > _______________________________________________
> > Netslices mailing list
> > Netslices@ietf.org
> > https://www.ietf.org/mailman/listinfo/netslices
>

--94eb2c1957feb52e1e05558f142a
Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

Sheng,<br><br>Great, thanks for the update. <br>Would be great if you&#39;d=
 bring your work to IETF at a rather early stage, otherwise there could be =
a rather large gap,  between what we will be doing in IETF vs your team&#39=
;s work. Also think about collaboration with all the efforts you have menti=
oned above and how to build on top (API&#39;s, data models) rather than try=
ing to reinvent the wheel.<br>IAB/IESG will continuously direct the overall=
 effort.<br><br>Looking forward to seeing your work.<br><br>Thanks,<br>Jeff=
<br><div class=3D"gmail_quote"><div dir=3D"ltr">On Fri, Jul 28, 2017 at 19:=
00 Sheng Jiang &lt;<a href=3D"mailto:jiangsheng@huawei.com">jiangsheng@huaw=
ei.com</a>&gt; wrote:<br></div><blockquote class=3D"gmail_quote" style=3D"m=
argin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Benoit &amp; =
Jeff,<br>
<br>
Thanks for your clear advices and instructions, which we will follow. For m=
e, a unified slice template/object and its management are modest work for I=
ETF to start work. My team is working on such design and correspondent impl=
ementation. The implementation is also including orchestration algorithms a=
nd mapping the unified slice template/object to one/multiple specific netwo=
rk infrastructures, for which VPN, Virtual router, Detnet, ACTN, and other =
new technologies are in our consideration. We are planning a demonstration =
on this for IETF 100 Bits-N-Bites, too.<br>
<br>
Many thanks and best regards,<br>
<br>
Sheng<br>
<br>
&gt; -----Original Message-----<br>
&gt; From: Netslices [mailto:<a href=3D"mailto:netslices-bounces@ietf.org" =
target=3D"_blank">netslices-bounces@ietf.org</a>] On Behalf Of Jeff Tantsur=
a<br>
&gt; Sent: Friday, July 28, 2017 1:48 AM<br>
&gt; To: Benoit Claise; <a href=3D"mailto:NetSlices@ietf.org" target=3D"_bl=
ank">NetSlices@ietf.org</a>; Jari Arkko<br>
&gt; Cc: IAB<br>
&gt; Subject: Re: [Netslices] netslicing/netslices: Potential next steps<br=
>
&gt;<br>
&gt; Benoit,<br>
&gt;<br>
&gt; Thanks for sharing.<br>
&gt; As discussed =E2=80=93 we will continue working towards narrowed down =
and realistic<br>
&gt; set of requirements towards IETF, that should guide all the great work=
<br>
&gt; happening across different area=E2=80=99s/wg=E2=80=99s.<br>
&gt;<br>
&gt; &gt;From IAB that would be Jari and myself.<br>
&gt;<br>
&gt; Cheers,<br>
&gt; Jeff (as the BoF IAB shepherd)<br>
&gt;<br>
&gt; -----Original Message-----<br>
&gt; From: Netslices &lt;<a href=3D"mailto:netslices-bounces@ietf.org" targ=
et=3D"_blank">netslices-bounces@ietf.org</a>&gt; on behalf of Benoit Claise=
<br>
&gt; &lt;<a href=3D"mailto:bclaise@cisco.com" target=3D"_blank">bclaise@cis=
co.com</a>&gt;<br>
&gt; Date: Thursday, July 27, 2017 at 10:32<br>
&gt; To: &lt;<a href=3D"mailto:NetSlices@ietf.org" target=3D"_blank">NetSli=
ces@ietf.org</a>&gt;<br>
&gt; Subject: [Netslices] netslicing/netslices: Potential next steps<br>
&gt;<br>
&gt;=C2=A0 =C2=A0 =C2=A0Dear all,<br>
&gt;<br>
&gt;=C2=A0 =C2=A0 =C2=A0Thanks for all who contributed to the netslicing Bo=
F: the document<br>
&gt;=C2=A0 =C2=A0 =C2=A0authors, the presenters, the participants, and the =
chairs. During this<br>
&gt;=C2=A0 =C2=A0 =C2=A0week, next to BoF itself, I&#39;ve had multiple opp=
ortunities to speak about<br>
&gt;=C2=A0 =C2=A0 =C2=A0netslicing, with some BoF proponents, with the IAB =
shepherds, and with<br>
&gt;=C2=A0 =C2=A0 =C2=A0the IESG/IAB on Friday afternoon, etc. This helped =
me understanding the<br>
&gt;=C2=A0 =C2=A0 =C2=A0different points of views and clarified some aspect=
s.<br>
&gt;<br>
&gt;=C2=A0 =C2=A0 =C2=A0It&#39;s true that the network slicing has got a sp=
ecific meaning in the<br>
&gt;=C2=A0 =C2=A0 =C2=A0context of 5G, but, as Georg (as liaison) stressed:=
 there are no 3GPP<br>
&gt;=C2=A0 =C2=A0 =C2=A0requirements for the IETF at this point in time. Ne=
vertheless, there are<br>
&gt;=C2=A0 =C2=A0 =C2=A0parts that the IETF should look at. And there are p=
arts of the network<br>
&gt;=C2=A0 =C2=A0 =C2=A0slicing concept that are already being worked on at=
 the IETF. ACTN comes<br>
&gt;=C2=A0 =C2=A0 =C2=A0to mind, but also DETNET, and I heard of VPN+. The =
individual work in<br>
&gt;=C2=A0 =C2=A0 =C2=A0WGs should continue and potentially be extended.<br=
>
&gt;<br>
&gt;=C2=A0 =C2=A0 =C2=A0Note that I carefully used the &quot;network slicin=
g concept&quot; term in the<br>
&gt;=C2=A0 =C2=A0 =C2=A0previous sentence. As one important next step, it w=
ould nice to focus on<br>
&gt;=C2=A0 =C2=A0 =C2=A0a common &quot;network slicing&quot; definition, at=
 least its meaning for the IETF.<br>
&gt;<br>
&gt;=C2=A0 =C2=A0 =C2=A0As mentioned during the BoF, this is not the IETF r=
ole to define a<br>
&gt;=C2=A0 =C2=A0 =C2=A0complete orchestrator, controller, or NMS/OSS. This=
 should be developed<br>
&gt;=C2=A0 =C2=A0 =C2=A0by an opensource project. However, what would be a =
practical next step<br>
&gt;=C2=A0 =C2=A0 =C2=A0is to specify a kind of network slicing template, w=
ith the envisioned<br>
&gt;=C2=A0 =C2=A0 =C2=A0required parameters. From there, we could determine=
 what&#39;s missing<br>
&gt; when<br>
&gt;=C2=A0 =C2=A0 =C2=A0we try to map it to a specific (IETF) technologies.=
<br>
&gt;<br>
&gt;=C2=A0 =C2=A0 =C2=A0Let me make up an (hopefully simple) example: I wou=
ld like to have a<br>
&gt;=C2=A0 =C2=A0 =C2=A0network slice with a guaranteed bandwidth b, end-to=
-end jitter j, packet<br>
&gt;=C2=A0 =C2=A0 =C2=A0loss p, end-to-end max delay d. Do we even those ab=
ilities in the<br>
&gt;=C2=A0 =C2=A0 =C2=A0underlying technologies?<br>
&gt;<br>
&gt;=C2=A0 =C2=A0 =C2=A0Regards, Benoit (as the BoF responsible AD)<br>
&gt;<br>
&gt;<br>
&gt;=C2=A0 =C2=A0 =C2=A0_______________________________________________<br>
&gt;=C2=A0 =C2=A0 =C2=A0Netslices mailing list<br>
&gt;=C2=A0 =C2=A0 =C2=A0<a href=3D"mailto:Netslices@ietf.org" target=3D"_bl=
ank">Netslices@ietf.org</a><br>
&gt;=C2=A0 =C2=A0 =C2=A0<a href=3D"https://www.ietf.org/mailman/listinfo/ne=
tslices" rel=3D"noreferrer" target=3D"_blank">https://www.ietf.org/mailman/=
listinfo/netslices</a><br>
&gt;<br>
&gt;<br>
&gt;<br>
&gt; _______________________________________________<br>
&gt; Netslices mailing list<br>
&gt; <a href=3D"mailto:Netslices@ietf.org" target=3D"_blank">Netslices@ietf=
.org</a><br>
&gt; <a href=3D"https://www.ietf.org/mailman/listinfo/netslices" rel=3D"nor=
eferrer" target=3D"_blank">https://www.ietf.org/mailman/listinfo/netslices<=
/a><br>
</blockquote></div>

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Thread-Topic: [Netslices] netslicing/netslices: Potential next steps
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