From nobody Mon Jan 1 17:26:30 2018 Return-Path: X-Original-To: netslices@ietfa.amsl.com Delivered-To: netslices@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 40E92124D85 for ; Mon, 1 Jan 2018 17:26:29 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -4.231 X-Spam-Level: X-Spam-Status: No, score=-4.231 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, RCVD_IN_MSPIKE_H3=-0.01, RCVD_IN_MSPIKE_WL=-0.01, SPF_PASS=-0.001, T_RP_MATCHES_RCVD=-0.01] autolearn=ham autolearn_force=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id VpT1tk6tAV7g for ; Mon, 1 Jan 2018 17:26:26 -0800 (PST) Received: from huawei.com (lhrrgout.huawei.com [194.213.3.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id A76C31242EA for ; Mon, 1 Jan 2018 17:26:26 -0800 (PST) Received: from lhreml706-cah.china.huawei.com (unknown [172.18.7.107]) by Forcepoint Email with ESMTP id 4A15DCCABB466 for ; Tue, 2 Jan 2018 01:26:23 +0000 (GMT) Received: from DGGEMM403-HUB.china.huawei.com (10.3.20.211) by lhreml706-cah.china.huawei.com (10.201.108.47) with Microsoft SMTP Server (TLS) id 14.3.361.1; Tue, 2 Jan 2018 01:26:23 +0000 Received: from DGGEMM513-MBS.china.huawei.com ([169.254.4.39]) by DGGEMM403-HUB.china.huawei.com ([10.3.20.211]) with mapi id 14.03.0361.001; Tue, 2 Jan 2018 09:26:19 +0800 From: "Liguangpeng (Roc, Network Technology Laboratory)" To: Alex Galis , Network Slices Thread-Topic: [Netslices] some considerations for the next steps towards IETF101. Thread-Index: AQHTe/MOOL1s+b69akyWrmpqI1QN3aNf11KA Date: Tue, 2 Jan 2018 01:26:19 +0000 Message-ID: <6F4E6B0C717D4641A2B79BC1740D8CF4A7A8CA76@dggemm513-mbs.china.huawei.com> References: <3205575B-3E70-401C-AB92-7B7FDCED69D9@ucl.ac.uk> In-Reply-To: <3205575B-3E70-401C-AB92-7B7FDCED69D9@ucl.ac.uk> Accept-Language: zh-CN, en-US Content-Language: zh-CN X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.130.157.47] Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 MIME-Version: 1.0 X-CFilter-Loop: Reflected Archived-At: Subject: [Netslices] =?utf-8?b?562U5aSNOiAgc29tZSBjb25zaWRlcmF0aW9ucyBm?= =?utf-8?q?or_the_next_steps_towards_IETF101=2E?= X-BeenThere: netslices@ietf.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: "This list is intended for discussion and review of network slicing at IETF." 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[Netslices] Summary of Open Issues X-BeenThere: netslices@ietf.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: "This list is intended for discussion and review of network slicing at IETF." 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Tue, 2 Jan 2018 11:34:55 -0800 (PST) In-Reply-To: <06C389826B926F48A557D5DB5A54C4ED2A5E2C18@dggemi509-mbs.china.huawei.com> References: <06C389826B926F48A557D5DB5A54C4ED2A5DED86@dggemi509-mbs.china.huawei.com> <06C389826B926F48A557D5DB5A54C4ED2A5E055E@dggemi509-mbs.china.huawei.com> <06C389826B926F48A557D5DB5A54C4ED2A5E2C18@dggemi509-mbs.china.huawei.com> From: Xavier de Foy Date: Tue, 2 Jan 2018 14:34:55 -0500 Message-ID: To: "qiangli (D)" Cc: "NetSlices@ietf.org" Content-Type: multipart/related; boundary="001a11c02e788b8a870561d0319b" Archived-At: Subject: Re: [Netslices] Summary of Open Issues X-BeenThere: netslices@ietf.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: "This list is intended for discussion and review of network slicing at IETF." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 02 Jan 2018 19:35:00 -0000 --001a11c02e788b8a870561d0319b Content-Type: multipart/alternative; boundary="001a11c02e788b8a840561d0319a" --001a11c02e788b8a840561d0319a Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Thanks for the explanations Cristina and Kiran, sorry for this late response. Basically I agree with your points, and plan to contribute to the progress of the existing drafts, in particular the 2 existing drafts on NBI/COMS model (draft-qiang-coms-netslicing-information-model and draft-defoy-coms-subnet-interconnection). I agree the NSaaS model (is it a customer service model?) discussed earlier in the thread may provide a use case for NBI/COMS. Best Regards, Xavier. On Mon, Jan 1, 2018 at 10:04 PM, qiangli (D) wrote: > Hi Xavier, > > > > Sorry for the late response just back from vacation. I have checked some > materials and hope the following figure and text could answer your questi= on. > > > > > > l *(Customer) Service Model* describes a service as offered or delivered > to a customer by a network operator [https://datatracker.ietf.org/ > doc/draft-ietf-opsawg-service-model-explained/ > > ] > > l *Service Delivery Model* is used by a network operator to define and > manage how a service is engineered in the network [ > https://datatracker.ietf.org/doc/draft-ietf-opsawg-service-model-explaine= d > / > > ] > > l *Information Model* is an abstraction and representation of the > entities in a managed environment, their properties, attributes and > operations, and the way that they relate to each other [https > :// > tools.ietf.org/html/rfc3444] > > l *Data model* is defined at a lower level of abstraction and include > many details, include implementation and protocol specific constructs. > There is a gray area where information models and data models overlap. Th= e > data model could be further divided into network configuration model and > device configuration model [https:// > tools.ietf.org/html/rfc3198] > > l *Network Configuration Model* is used by a network orchestrator to > instruct controllers (that may each be responsible for multiple network > elements) how to configure parts of a network [ > https://datatracker.ietf.org/doc/draft-ietf-opsawg-service-model-explaine= d > / > > ] > > l D*evice Configuration Model* is used by a controller to set parameters > on an individual network element [https://datatracker.ietf.org/ > doc/draft-ietf-opsawg-service-model-explained/ > > ] > > > > The above figure illustrates how these models are used to initialize a > network slice service request, the service delivery model is really > similar to the northbound interface at this time. However apart from the > request initialization process, northbound interface has a broader meanin= g > in such as capability exposure, monitoring result reporting, SLR/SLA > negotiation, multi-domain cooperation, etc. IMHO. > > > > Moreover, you may find there are two =E2=80=9Cinformation model=E2=80=9D = in the figure. I > think COMS information model could be corresponded to the network > orchestrator information model. As for the controller information model, = a > simple example would be ACTN information model. > > > > > > Best regards, > > > > Cristina QIANG > > > > *From:* Xavier de Foy [mailto:x.defoy.ietf@gmail.com] > *Sent:* Saturday, December 23, 2017 1:16 AM > > *To:* qiangli (D) > *Cc:* NetSlices@ietf.org > *Subject:* Re: [Netslices] Summary of Open Issues > > > > Thanks Cristina, to answer some of your questions, I am interested to wor= k > with you and others on this, especially on #3 items. In particular the wo= rk > we started on the COMS model (model and interconnection drafts) may be a > starting point for some of the work there. > > > > One thing I would like to understand better is the difference between > service model and northbound interface data model. Is it fair to say that > the service model would include for example the template (or blueprint) o= f > a network slice, which would be used in a instantiation request, while th= e > northbound data model would include the description of the actual instanc= e > of a network slice? If we foresee strong interrelations between those > models, it could be useful to work jointly on them. In any case, it could > be useful to provide more information to clarify their role and the > relation between them in the charter text. > > > > Best Regards, > > Xavier. > > > > On Fri, Dec 22, 2017 at 8:41 AM, qiangli (D) wrote: > > Hi Xavier and others, > > > > Thank you for your comments. According to your suggestions, I have > re-organized the potential work items as follows. Since the BoF proposal > cut-off date is on early February, I guess it=E2=80=99s time to carry out= action > ASAP on some items without too many disagreements: > > > > 1. The COMS Problem Statement - clearly provides the requirements > from management work item, and the architecture of COMS. > > 2. The COMS Use Cases - provides the motivating use cases as a basis > for the work. [need a COMS focused use case draft? Any volunteers for new > draft? Has discussed under thread entitled =E2=80=9COpen Issue III=E2=80= =9D ] > > 3. Model(s) describing a slice or slice subnet instance and > operations on a slice instance. [Any volunteers for new Service Model > draft?=E2=80=94discussed under thread entitled =E2=80=9COpen Issue II=E2= =80=9D; Any volunteers for > new northbound interface data model draft?] > > 4. The COMS mapping operation/interface to underlying technologies. > [Has discussed under thread entitled =E2=80=9COpen Issue I=E2=80=9D] > > > > > > Best regards, > > > > Cristina QIANG > > > > *From:* Xavier de Foy [mailto:x.defoy.ietf@gmail.com] > *Sent:* Friday, December 22, 2017 1:30 AM > *To:* qiangli (D) > *Cc:* NetSlices@ietf.org > *Subject:* Re: [Netslices] Summary of Open Issues > > > > Hi Cristina, > > Thanks for bringing this to the list. I agree with this narrowed down > approach, and would only have suggestions to simplify and shorten the wor= k > item list. For example 4-5-6 could be limited to 2: (4) model(s) describi= ng > a slice or slice subnet instance and operations on a slice instance; (5) > mapping operation to underlying technologies. Also, I would suggest > limiting the architecture effort as much as possible before IETF101, mayb= e > even using the problem statement document for this effort for now. > > Best Regards, > > Xavier > > > > On Wed, Dec 13, 2017 at 3:25 AM, qiangli (D) wrote: > > Hi All, > > > > Before we carry out the next stage work, we would like to hear your > opinion on future possible directions. We have preliminarily listed the > following 6 potential work items for discussion, is there anything missin= g > or inappropriate? > > > > COMS (Common Operation and Management on network Slices) =E2=80=93 a conc= rete > topic narrowed down from NetSlicing, focuses on resource-oriented > (including connectivity, computing, storage and other potential resources= ) > common management plane, be able to shield the differences of multiple > implementation techniques. > > > > 1. The COMS Architecture - provides common terminology, basic > architecture elements, resource abstractions and the inter-actions. > > 2. The COMS Use Cases - provides the motivating use cases as a > basis for the work. > > 3. The COMS Problem Statement - clearly provides the requirements > from management work item. > > 4. The COMS Information Model/Template - Identifies managed objects > needed to implement a network slice instance in a network slice aware > system. > > 5. The COMS Data Model - date models of northbound and > southbound/mapping interfaces of a network slice aware system. > > 6. The COMS Service Model =E2=80=93 a service model mapping to an i= nstance > of a slice and its management. > > > > Best regards, > > > > Cristina QIANG > > > > > > > _______________________________________________ > Netslices mailing list > Netslices@ietf.org > https://www.ietf.org/mailman/listinfo/netslices > > > > > --001a11c02e788b8a840561d0319a Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Thanks for the explanations Cristina and Kiran, sorry= for this late response. Basically I agree with your points, and plan to co= ntribute to the progress of the existing drafts, in particular the 2 existi= ng drafts on NBI/COMS model (draft-qiang-coms-netslicing-information-model = and draft-defoy-coms-subnet-interconnection). I agree the NSaaS model (is i= t a customer service model?) discussed earlier in the thread may provide a = use case for NBI/COMS.

Best Regards,
Xav= ier.

O= n Mon, Jan 1, 2018 at 10:04 PM, qiangli (D) <qiangli3@huawei.com&g= t; wrote:

Hi Xavier,

=C2=A0

Sorry for the late res= ponse just back from vacation. I have checked some materials and hope the f= ollowing figure and text could answer your question.

=C2=A0

=C2=A0

l=C2=A0 (Customer) Ser= vice Model describes a service as offered or delivered to a customer by a network operator [https://datatracker.ietf.org/doc/draft-iet= f-opsawg-service-model-explained/]

l=C2=A0 Service Delive= ry Model is used by a network operator to define and manage how a service is engineered in = the network [https://datatracker.ietf.org/doc/draft-ietf-opsawg-service-model-explained/]

l=C2=A0 Information Mo= del is an abstraction and representation of the entities in a=C2=A0 managed environment, their p= roperties, attributes and operations, and the way that they relate to each = other [ht= tps:/= /tool= s.ietf.org/html/rfc3444]

l=C2=A0 Data model is defined at a lower level of abstraction and include many details, include implementation and = protocol specific constructs. There is a gray area where information models= and data models overlap. The data model could be further divided into netw= ork configuration model and device configuration model [https://tools.ietf.org/html/rfc3198]<= /p>

l=C2=A0 Network Config= uration Model is used by a network orchestrator to instruct controllers (that may each be r= esponsible for multiple network elements) how to configure parts of a netwo= rk [https://datatracker.ietf.org/doc/dr= aft-ietf-opsawg-service-model-explained/]

l=C2=A0 Device Configu= ration Model is used by a controller to set parameters on an individual= network element [https://datatracker.ietf.o= rg/doc/draft-ietf-opsawg-service-model-explained/]

=C2=A0

The above figure illus= trates how these models are used to initialize a network slice service requ= est, =C2=A0the service delivery model is really similar to the northbound interface at this time. However apart from the request i= nitialization process, northbound interface has a broader meaning in such a= s capability exposure, monitoring result reporting, SLR/SLA negotiation, mu= lti-domain cooperation, etc. IMHO.

=C2=A0

Moreover, you may find= there are two =E2=80=9Cinformation model=E2=80=9D in the figure. I think C= OMS information model could be corresponded to the network orchestrator information model. As for the controller information model, a simple examp= le would be ACTN information model.

=C2=A0

=C2=A0

Best regards,

=C2=A0

Cristina QIANG

=C2=A0

From: = Xavier de Foy [mailto:x.defoy.ietf@gmail.com]
Sent: Saturday, December 23, 2017 1:16 AM


To: qiangli (D) <qiangli3@huawei.com>
Cc: NetSlice= s@ietf.org
Subject: Re: [Netslices] Summary of Open Issues
<= /div>

=C2=A0

Thanks Cristina, to answer some= of your questions, I am interested to work with you and others on this, es= pecially on #3 items. In particular the work we started on the COMS model (= model and interconnection drafts) may be a starting point for some of the work there.

=C2=A0

One thing I would like to under= stand better is the difference between service model and northbound interfa= ce data model. Is it fair to say that the service model would include for e= xample the template (or blueprint) of a network slice, which would be used in a instantiation request, while the= northbound data model would include the description of the actual instance= of a network slice? If we foresee strong interrelations between those mode= ls, it could be useful to work jointly on them. In any case, it could be useful to provide more information to cl= arify their role and the relation between them in the charter text.

=C2=A0

Best Regards,

Xavier.

=C2=A0

On Fri, Dec 22, 2017 at 8:41 AM= , qiangli (D) <= qiangli3@huawei.com> wrote:

Hi Xavier and others,=

=C2=A0

Thank you for your comments. According to your suggestions, I have re-= organized the potential work items as follows. Since the BoF proposal cut-off date is on early February, I guess it=E2=80=99s time to carry out = action ASAP on some items without too many disagreements:

=C2=A0

1.=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 The COMS Pro= blem Statement - clearly provides the requirements from management work ite= m, and the architecture of COMS.

2.=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 The COMS Use= Cases - provides the motivating use cases as a basis for the work. [need a= COMS focused use case draft? Any volunteers for new draft?=C2=A0 Has discu= ssed under thread entitled =E2=80=9COpen Issue III=E2=80=9D ]

3.=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 Model(s) des= cribing a slice or slice subnet instance and operations on a slice instance= . [Any volunteers for new Service Model draft?=E2=80=94discussed under thre= ad entitled =E2=80=9COpen Issue II=E2=80=9D; Any volunteers for new northbound interfa= ce data model draft?]

4.=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 The COMS map= ping operation/interface to underlying technologies. [Has discussed under t= hread entitled =E2=80=9COpen Issue I=E2=80=9D]<= u>

=C2= =A0

=C2=A0

Best regards,

=C2=A0

Cristina QIANG

=C2=A0

From:<= /span> Xavier de Foy [mailto:x.defoy.ietf@gmail.com]
Sent: Friday, December 22, 2017 1:30 AM
To: qiangli (D) <qiangli3@huawei.com>
Cc: NetSlice= s@ietf.org
Subject: Re: [Netslices] Summary of Open Issues

=C2= =A0

Hi C= ristina,

=C2=A0 Thanks for bringing this to the list. I agree with this narrowed dow= n approach, and would only have suggestions to simplify and shorten the wor= k item list. For example 4-5-6 could be limited to 2: (4) model(s) describi= ng a slice or slice subnet instance and operations on a slice instance; (5) mapping operation to underlying techno= logies. Also, I would suggest limiting the architecture effort as much as p= ossible before IETF101, maybe even using the problem statement document for= this effort for now.
=C2=A0
=C2=A0 Best Regards,
=C2=A0
Xavier

=C2= =A0

On W= ed, Dec 13, 2017 at 3:25 AM, qiangli (D) <qiangli3@huawei.com> wrote:=

Hi A= ll,

=C2= =A0

Befo= re we carry out the next stage work, we would like to hear your opinion on = future possible directions. We have preliminarily listed the following 6 po= tential work items for discussion, is there anything missing or inappropriate?

=C2= =A0

COMS= (Common Operation and Management on network Slices) =E2=80=93 a concrete topic narrowed down from N= etSlicing, focuses on resource-oriented (including connectivity, computing,= storage and other potential resources) common management plane, be able to= shield the differences of multiple implementation techniques.

=C2= =A0

1.=C2=A0=C2=A0=C2=A0=C2=A0=C2= =A0=C2=A0 The COMS Architecture - provides common termino= logy, basic architecture elements, resource abstractions and the inter-acti= ons.

2.=C2=A0=C2=A0=C2=A0=C2=A0=C2= =A0=C2=A0 The COMS Use Cases - provides the motivating us= e cases as a basis for the work.

3.=C2=A0=C2=A0=C2=A0=C2=A0=C2= =A0=C2=A0 The COMS Problem Statement - clearly provides t= he requirements from management work item.

4.=C2=A0=C2=A0=C2=A0=C2=A0=C2= =A0=C2=A0 The COMS Information Model/Template - Identifie= s managed objects needed to implement a network slice instance in a network= slice aware system.

5.=C2=A0=C2=A0=C2=A0=C2=A0=C2= =A0=C2=A0 The COMS Data Model - date models of northbound= and southbound/mapping interfaces of a network slice aware system.<= u>

6.=C2=A0=C2=A0=C2=A0=C2=A0=C2= =A0=C2=A0 The COMS Service Model =E2=80=93 a service model mapping to an instance of a slice and its man= agement.

=C2= =A0

Best= regards,

=C2= =A0

Cris= tina QIANG

=C2= =A0

=C2= =A0


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

=C2= =A0

=C2=A0


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(Postfix) with ESMTP id 817F81205F0 for ; Thu, 4 Jan 2018 01:11:39 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -4.23 X-Spam-Level: X-Spam-Status: No, score=-4.23 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_MED=-2.3, RCVD_IN_MSPIKE_H3=-0.01, RCVD_IN_MSPIKE_WL=-0.01, SPF_PASS=-0.001, T_RP_MATCHES_RCVD=-0.01] autolearn=ham autolearn_force=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id vS2jcl-4WD3q for ; Thu, 4 Jan 2018 01:11:36 -0800 (PST) Received: from huawei.com (lhrrgout.huawei.com [194.213.3.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 0FE52120227 for ; Thu, 4 Jan 2018 01:11:36 -0800 (PST) Received: from lhreml701-cah.china.huawei.com (unknown [172.18.7.107]) by Forcepoint Email with ESMTP id 1C20F93535FD for ; Thu, 4 Jan 2018 09:11:32 +0000 (GMT) Received: from DGGEMI405-HUB.china.huawei.com (10.3.17.143) by lhreml701-cah.china.huawei.com (10.201.108.42) with Microsoft SMTP Server (TLS) id 14.3.361.1; Thu, 4 Jan 2018 09:11:33 +0000 Received: from DGGEMI509-MBS.china.huawei.com ([169.254.2.152]) by dggemi405-hub.china.huawei.com ([10.3.17.143]) with mapi id 14.03.0361.001; Thu, 4 Jan 2018 17:11:28 +0800 From: "qiangli (D)" To: Lei Wang , NetSlices Thread-Topic: Re: [Netslices] Open Issue I: SouthBound/Mapping Interface Thread-Index: AQHTeZ9kKiooTEHoikOC9L32YMqm1aNjgpvQ Date: Thu, 4 Jan 2018 09:11:29 +0000 Message-ID: <06C389826B926F48A557D5DB5A54C4ED2A5E355C@dggemi509-mbs.china.huawei.com> References: <06C389826B926F48A557D5DB5A54C4ED2A5DEDA1@dggemi509-mbs.china.huawei.com>, , <06C389826B926F48A557D5DB5A54C4ED2A5DFC7D@dggemi509-mbs.china.huawei.com> In-Reply-To: Accept-Language: zh-CN, en-US Content-Language: zh-CN X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.130.163.138] 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X-MS-Exchange-CrossTenant-originalarrivaltime: 09 Jan 2018 14:53:25.3919 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Internet X-MS-Exchange-CrossTenant-id: 84df9e7f-e9f6-40af-b435-aaaaaaaaaaaa X-MS-Exchange-Transport-CrossTenantHeadersStamped: PU1APC01HT051 Archived-At: Subject: Re: [Netslices] Input for problem statement X-BeenThere: netslices@ietf.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: "This list is intended for discussion and review of network slicing at IETF." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 09 Jan 2018 14:53:32 -0000 --_000_PS1PR0601MB1483DDA819BB8370C47E30B287100PS1PR0601MB1483_ Content-Type: text/plain; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable Hi Xavier, Thanks for your very helpful suggestion. As we discussed during IETF100, I believe the recursive nature of COMS is v= ery important and it is sensible to make the terms aligned with NGMN defini= tion. I will update the problem statement draft accordingly. In additional, do you think we can take out the end-to-end slice manager fo= r non-3GPP scenarios since the COMS may comes into the picture from the top= -level slice manager/controller? Best wishes Liang ________________________________ From: Netslices on behalf of De Foy, Xavier Sent: 06 December 2017 04:21:07 To: Geng, Liang Cc: NetSlices@ietf.org Subject: [Netslices] Input for problem statement Hi Liang, This is to follow-up our conversation at IETF 100 about draft-geng-coms-= problem-statement, and share on the list. The goal would be to make a recur= sive use of the same (COMS) model, from top to bottom. A secondary point would be to align our use of the terms =93slice segment= =94 and =93slice subnet=94 across drafts. Since =93subnet=94 is defined by = NGMN it could be simpler to use that term, as long as our definition is com= patible with NGMN. There is a definition in the interconnection draft. Please consider the following figure as input for an update to figure 2: = e.g. =93cross-segment=94 could become =93end-to-end=94, =93segment-specific= =94 could become =93technology specific=94, etc. One additional thing we could consider is using a single term =93manager= =94 or =93controller=94. This would be better aligned with the recursive na= ture of COMS (e.g. an e2e slice manager may be used to manager/control a sl= ice subnet for a larger slice). NSaaS and +------------------------------------------+ End-to-end | Network Slice Tenant | Network +-+----------------------------------------+ Slice | Requests a NSaaS Service Management | ^ +-v----------------------------------------+ | | Network Slice Service Provider | | +-+----------------------------------------+ | | Generates an end-to-end Slice Model | | | +-v----------------------------------------+ ^ | | E2e slice manager (COMS model) | | | +-+----------------------------------------+ | NS | | Decomposed by End-to-end | Layer | | Network Slice Manager | | +-v----------------------------------------+ | ------------|Slice controllers (COMS model for subnets)| | | | (may include multiple controllers) | | v +----+---------------+---------------+-----+ v Tech-specific | | | Network Slice | | | Management +------v------+ +------v------+ +------v------+ and | Network | | Network | | Network | Implementation |Configuration| |Configuration| |Configuration| | Model I | | Model II | | Model III | +-------------+ +-------------+ +-------------+ And to match it, here is some input for figure 1: +----------------------------------------------------------+ | Network Slice as a Service | | +-------------------------------------+ +--------------+ | | | Network Slice Template | | | | | | +---------+ +---------+ +---------+ | | Customized | | | | | 5G | | Internet| |Verticals| | | Network Slice| | | | | centric | | VPN | |Industry | | | | | | | +---------+ +---------+ +---------+ | | | | | +-------------------------------------+ +----+---------+ | | | | | | | | | | +------v----------------------------v----+ | | | Network Slice Service Profile | | | +----------------+-----------------------+ | | | | +----------------------------------------------------------+ | +---------v----------+ | End-to-end | +------------+ Slice Manager +--------------+ | +---------+----------+ | | | | | | | +----v----+ +--------------v-----------------+ +-----v----+ | RAN | | Network Slice Controller | | CN | | Slice | | | | Slice | | Ctrlr | +--------+----------+---------+-++ | Ctrlr | +---------+ | | | | | +----------+ +---+ | | | +----------+ | | | | | +------+-----+ +----+----+ +---+----+ +--+--------+ +-+--------+ |Connectivity| |Computing| | Storage| |Generalized| | Nw Slice | | | | | | | |Functions | | Ctrlr | +------------+ +---------+ +--------+ +-----------+ +----------+ Best Regards, Xavier. --_000_PS1PR0601MB1483DDA819BB8370C47E30B287100PS1PR0601MB1483_ Content-Type: text/html; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable

Hi Xavier,


Thanks for your very helpful sugg= estion.


As we discussed during IETF100, I= believe the recursive nature of COMS is very important and it is sensible = to make the terms aligned with NGMN definition. I will update the problem s= tatement draft accordingly.


In additional, do you think we ca= n take out the end-to-end slice manager for non-3GPP scenarios since the CO= MS may comes into the picture from the top-level slice manager/control= ler?


Best wishes

Liang


From: Netslices <netslic= es-bounces@ietf.org> on behalf of De Foy, Xavier <Xavier.DeFoy@InterD= igital.com>
Sent: 06 December 2017 04:21:07
To: Geng, Liang
Cc: NetSlices@ietf.org
Subject: [Netslices] Input for problem statement
 

Hi Liang,

 

   This is to f= ollow-up our conversation at IETF 100 about draft-geng-coms-problem-stateme= nt, and share on the list. The goal would be to make a recursive use of the= same (COMS) model, from top to bottom.

 

  A secondary point would be to align our use= of the terms =93slice segment=94 and =93slice subnet=94 across drafts. Sin= ce =93subnet=94 is defined by NGMN it could be simpler to use that term, as= long as our definition is compatible with NGMN. There is a definition in the interconnection draft.

 

  Please consider the following figure as inp= ut for an update to figure 2: e.g. =93cross-segment=94 could become =93end-= to-end=94, =93segment-specific=94 could become =93technology specific=94, e= tc.

 

  One additional thing we could consider is u= sing a single term =93manager=94 or =93controller=94. This would be better = aligned with the recursive nature of COMS (e.g. an e2e slice manager may be= used to manager/control a slice subnet for a larger slice).

 

 

  NSaaS and    &n= bsp;  +------------------------------------------+

  End-to-end    &= nbsp; |   Network Slice Tenant      = ;             |=

  Network     &nb= sp;   +-+----------------------------------------= 3;

  Slice     =         |   Requests a NSaaS S= ervice

  Management    &= nbsp;   |

      ^ &nbs= p;         +-v-----------------= -----------------------+

      | &nbs= p;         | Network Slice Service = Provider           |

      | &nbs= p;         +-+-------------= ---------------------------+

      | &nbs= p;           |  Gene= rates an end-to-end Slice Model

      | &nbs= p;           |

      = ;|           +-v-----= -----------------------------------+   ^

      | &nbs= p;         | E2e slice manager (COM= S model)           | = ;  |

      | &nbs= p;         +-+-------------= ---------------------------+   | NS

      | &nbs= p;           | Decomposed= by End-to-end          &= nbsp;        | Layer

      | &nbs= p;           |  = ;            &n= bsp;     Network Slice Manager   |

      | &nbs= p;         +-v-----------------= -----------------------+   |

      -----------= -|Slice controllers (COMS model for subnets)|   |

      | &nbs= p;         | (may include multiple = controllers)       |   |

      v &nbs= p;         +----+----------= -----+---------------+-----+   v

Tech-specific     &nbs= p;   |         =       |       &= nbsp;       |

Network Slice     &nbs= p;   |         =       |       &= nbsp;       |

Management     +--= ----v------+ +------v------+ +------v------+

and       &n= bsp;    | Network     | | Network&n= bsp;    | | Network     |

Implementation |Configuration| |Configurat= ion| |Configuration|

       =          |  Model I  = ;  | |  Model II   | |  Model III  |

       =          +-------------+ &#= 43;-------------+ +-------------+

 

 

And to match it, here is some input for figure 1:<= /p>

 

+-------------------------------------= ---------------------+

|       = ;          Network Slice as a = Service            &= nbsp;  |

| +-----------------------------------= --+ +--------------+ |

| |     Network Slice = Template          | | &nb= sp;            | |

| | +---------+ +---------+= ; +---------+ | | Customized   | |

| | |   5G    | |= Internet| |Verticals| | | Network Slice| |

| | | centric | |   VPN &nb= sp; | |Industry | | |         =      | |

| | +---------+ +---------+= ; +---------+ | |        &n= bsp;     | |

| +-----------------------------------= --+ +----+---------+ |

|       = ;          |   =             &nb= sp;            |&nbs= p;          |

|       = ;          |   =             &nb= sp;            |&nbs= p;          |

|       = ;   +------v----------------------------v----+  = ;    |

|       = ;   | Network Slice Service Profile      = ;    |      |

|       = ;   +----------------+-----------------------+ &= nbsp;    |

|       = ;            &n= bsp;       |     &nb= sp;            =             |=

+-------------------------------------= ---------------------+

       =             &nb= sp;        |

       =            +---------= v----------+

       =            |   = End-to-end       |

     +------------= +   Slice Manager    +--------------+<= /span>

     |  &nbs= p;         +---------+-----= -----+           = ;   |

     |  &nbs= p;            &= nbsp;      |      &n= bsp;            = ;      |

     |  &nbs= p;            &= nbsp;      |      &n= bsp;            = ;      |

+----v----+  +-----------= ---v-----------------+ +-----v----+

|  RAN    |  | Ne= twork Slice Controller       | |  CN &nb= sp;    |

|  Slice  |  |  &= nbsp;           &nbs= p;            &= nbsp;    | |  Slice   |

|  Ctrlr  |  +--------&= #43;----------+---------+-++ |  Ctrlr   |

+---------+  |  &nb= sp;     |       &nbs= p;  |         | |  +-= ---------+

       =   +---+        |  = ;        |     =     | +----------+

       =   |            = |          |   =       |       &= nbsp;    |

  +------+-----+ +---= -+----+ +---+----+ +--+--------+ +-+= ;--------+

  |Connectivity| |Computing| | Storag= e| |Generalized| | Nw Slice |

  |     &nbs= p;      | |      &nb= sp;  | |        | |Functions  = | | Ctrlr    |

  +------------+ +-------= --+ +--------+ +-----------+ +----------+

 

  Best Regards,

 

Xavier.

 

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BCL:0; PCL:0; RULEID:(201702061074)(5061506573)(5061507331)(1603103135)(2017031320274)(2017031324274)(2017031323274)(2017031322404)(1601125374)(1603101448)(1701031045); SRVR:SG2APC01HT025; x-ms-traffictypediagnostic: SG2APC01HT025: x-ms-office365-filtering-correlation-id: fecf692b-ef9f-461d-7e5e-08d55776026f x-exchange-antispam-report-cfa-test: BCL:0; PCL:0; RULEID:(444000031); SRVR:SG2APC01HT025; BCL:0; PCL:0; RULEID:(100000803101)(100110400095); SRVR:SG2APC01HT025; x-forefront-prvs: 0547116B72 x-forefront-antispam-report: SFV:NSPM; SFS:(7070007)(98901004); DIR:OUT; SFP:1901; SCL:1; SRVR:SG2APC01HT025; H:PS1PR0601MB1483.apcprd06.prod.outlook.com; FPR:; SPF:None; LANG:; spamdiagnosticoutput: 1:99 spamdiagnosticmetadata: NSPM Content-Type: multipart/alternative; boundary="_000_PS1PR0601MB1483093FFEB2A067E35AEC8987100PS1PR0601MB1483_" MIME-Version: 1.0 X-OriginatorOrg: hotmail.com X-MS-Exchange-CrossTenant-Network-Message-Id: fecf692b-ef9f-461d-7e5e-08d55776026f X-MS-Exchange-CrossTenant-originalarrivaltime: 09 Jan 2018 15:31:09.4380 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Internet X-MS-Exchange-CrossTenant-id: 84df9e7f-e9f6-40af-b435-aaaaaaaaaaaa X-MS-Exchange-Transport-CrossTenantHeadersStamped: SG2APC01HT025 Archived-At: Subject: Re: [Netslices] Open Issue I: SouthBound/Mapping Interface X-BeenThere: netslices@ietf.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: "This list is intended for discussion and review of network slicing at IETF." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 09 Jan 2018 15:31:21 -0000 --_000_PS1PR0601MB1483093FFEB2A067E35AEC8987100PS1PR0601MB1483_ Content-Type: text/plain; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable Hi Hannu Thanks for your email. Please find my comments in line. >HFl: Monitoring and ensuring the SLA end to end of a slice is an important= aspect. Note that when the slice is crossing a (technology) domain, we mig= ht need to stich the end to end slice OAM from different pieces of segments= . Can we have such a =93technology agnostic=94 OAM? Is that feasible? Or sh= ould we do something what SFC WG is doing? >>[LG] I was discussing this with Cristina the other day. What you said abo= ut e2e OAM is an extremely important concern for COMS. In a cross-technolog= y scenarios, on one hand, COMS may send OAM requests to different domain c= ontrollers. It is distributing and collecting OAM requests and responses ra= ther than directly executing OAM functions. At this level, I think the OAM = model can be technology agnostic because the OAM parameters COMS would like= to collect from different domains need to be aligned. However, the actual = OAM functions each domain is based on may be different. On the other hand, = COMS may need to execute OAM functions directly if there are generic resour= ce elements that are directly under COMS control. Also I am not very famili= ar with SFC OAM, could you share more informaiton on I personally think COMS itself should not include the southbound mapping be= cause there was an assumption that anything below COMS is not aware of "sli= ce" (although in management perspective, COMS may see some of them "Subnets= "). Existing WG/technologies may refer to/map with COMS models if they woul= d like to be part of the managed network slice instance. Eventually, it may= be us - the people from COMS community, who will be actively progressing t= hese southbound interfaces in various IETF WGs. >HFl: What you say above would be an ideal situation, but I am afraid that = in practice the situation is such that also other WGs are working on slicin= g. See https://www.ietf.org/id/draft-ietf-teas-actn-framework-11.txt >>[LG] Yes, you are absolutely correct! What I mean is that whether or not = a specific technology domain is working on slice, COMS does not need to kno= w. The SBI of COMS delivers configuration models - the domain control apply= this configuration based on their own technology choices. In principle, COMS itself provides the capability of inter-operation betwee= n different domains. This capability is enabled by common information model= /service model and related OAM models/mechanisms. The southbound mapping is= implementation-specific in the view of COMS and may be more suitable to be= carried out in various technology-specific WGs. A good example would be th= at for a link from node A to node B requiring 100Mbit/s peak bandwidth and = maximum of 5ms latency, one can map this using various type of SD-WAN(VPN) = controllers with different underlay data planes. COMS sees them as the same= . >HFl: ok. And also in terms of the working load of WG, the southbound mapping could b= e endless, it may not be feasible for COMS WG to deliver a sensible charter= on this matter concerning southbound interfaces. >HFl: right. Meanwhile, I think it would be good if we can first of all deliver a/severa= l information models so that the southbound technology domain can chose the= materials they need to map with. We can do this by categorizing the resour= ces as Cristina suggested as "classifications" - which may make the model m= ore systematic. However, it is not necessary to limit the southbound to one= category - it should be able to pick parameters/components whatever are ne= eded. >HFl: this a bit unclear to me. Maybe you can elaborate your thoughts furth= er. >>[LG] Here I mean if the information model which defines the template of p= arameters of various type of resource tends to be to complex, we could spli= t it into several information models based on the categories of resources. = A specific technology domain may define their own network configuration mod= el (specific SBI of COMS) based on those information models. Of course, the= information model could also be just one as we did now. The other thing I = would like to point out for discussion is that we may need to define a gene= ric SBI or network configuration model in cases where resources are directl= y managed/control by COMS. What do yo think? Best wishes Liang ________________________________ From: Netslices > on behalf of Flinck, Hannu (Nokia - FI/Espoo) > Sent: 22 December 2017 22:02:46 To: qiangli (D); NetSlices@ietf.org Subject: Re: [Netslices] Open Issue I: SouthBound/Mapping Interface Ok. Think I what you might be after. Probably what you want is to have a se= t of reference or example mappings for few representative technologies? Suc= h as - A slice over the WAN/transport network for a given technology, - A slice over VNF infrastructure (SFCs and nvo3), - A slice that is a concatenation of the two across different doma= ins (this we know is missing). Is this what you would like to see? If so, it sounds to me reasonable and m= otivating work and would be useful to identify possible gaps and needed ad= ditions. Best regards Hannu From: qiangli (D) [mailto:qiangli3@huawei.com] Sent: Friday, December 22, 2017 3:09 PM To: Flinck, Hannu (Nokia - FI/Espoo) >; NetSlices@ietf.org Subject: RE: [Netslices] Open Issue I: SouthBound/Mapping Interface Hi Hannu, You=92re right. Still that question, If there does not exist a uniform mapp= ing interface between COMS and various implementation technologies, I am af= raid we are unable to analyze all possibilities. That=92s why I suggested = option 3 even I=92m also not sure whether we can find out an appropriate cl= assification method. Best regards, Cristina QIANG From: Flinck, Hannu (Nokia - FI/Espoo) [mailto:hannu.flinck@nokia-bell-labs= .com] Sent: Thursday, December 21, 2017 9:43 PM To: qiangli (D) >; NetSlice= s@ietf.org Subject: RE: [Netslices] Open Issue I: SouthBound/Mapping Interface Hello Cristina I am not sure I understand the option 3 sufficiently. What would be the use= of the classification? Should we identify classes of technologies that can= be served by same/similar mapping based on the classification? Best regards Hannu From: Netslices [mailto:netslices-bounces@ietf.org] On Behalf Of qiangli (D= ) Sent: Thursday, December 21, 2017 11:02 AM To: Flinck, Hannu (Nokia - FI/Espoo) >; NetSlices@ietf.org Subject: Re: [Netslices] Open Issue I: SouthBound/Mapping Interface Hi Hannu and others, Thank you for your comments. As you and Diego mentioned, the standardizatio= n of southbound interface is a sensitive matter, we=92d better avoid infrin= ging other WGs/RGs. To solve this issue, maybe we should figure out =93Is it possible to have a= uniform/standard mapping interface to adapt to a variety of implementation= technologies?=94 first. If Pedro is right, such uniform interface does exi= st, then it=92s not a big deal to standardize it IMHO. Otherwise, I think w= e may need to consider which option listed below will be better: Option 1: No standardization work on southbound interface, at least before = IETF 101 Option 2: Separately analyze all specific technologies as you have done -- = ACTN [un-checked], NFV [checked], then how about SFC, VPN=85? Option 3: Classify technologies (e.g., providing connectivity, provide VNF= =85.) , then discuss for each classification. I personally prefer 1 or 3, what=92s your opinion? Best regards, Cristina QIANG From: Flinck, Hannu (Nokia - FI/Espoo) [mailto:hannu.flinck@nokia-bell-labs= .com] Sent: Wednesday, December 20, 2017 10:33 PM To: qiangli (D) >; NetSlice= s@ietf.org Subject: RE: [Netslices] Open Issue I: SouthBound/Mapping Interface Hello Cristina and others, I would suggest that COMS/ATCN interface mapping would be developed in the= TEAS WG since that is an IETF WG, is also alluding to slicing topics, has = related specifications and the expertise of the transport networks. However, NFVO related work is currently within NVFRG where the slicing work= is a minor subset of much larger territory of what the RG is discussing. = Therefore, it would be better to do such focused work in COMS when and if i= t becomes an IETF WG. Best regards Hannu From: Netslices [mailto:netslices-bounces@ietf.org] On Behalf Of qiangli (D= ) Sent: Wednesday, December 13, 2017 10:41 AM To: NetSlices@ietf.org Subject: [Netslices] Open Issue I: SouthBound/Mapping Interface Hi All, This email is want to collect your opinion on the following issue: Do we need to standardize the Southbound/Mapping interface of a network sli= ce aware system in COMS? Or do you think this work should be carried out in= existing WGs/RGs? (e.g., mapping interface between COMS and ACTN, mapping = interface between COMS and NFVO) Best regards, Cristina QIANG --_000_PS1PR0601MB1483093FFEB2A067E35AEC8987100PS1PR0601MB1483_ Content-Type: text/html; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable

Hi Hannu


Thanks for your email.


Please find my comments in l= ine.

 

>HFl: Monitoring and ensuring the SLA end to end of a slice is an imp= ortant aspect. Note that when the slice is crossing a (technology) domain, = we might need to stich the end to end slice OAM from different pieces of se= gments. Can we have such a =93technology agnostic=94 OAM? Is that feasible? Or should we do something what SFC WG i= s doing?


>>[LG] I was discussing this with Cristina the other day. What you= said about e2e OAM is an extremely important concern for COMS. In a c= ross-technology scenarios,  on one hand, COMS may send OAM reques= ts to different domain controllers. It is distributing and collecting OAM requests and responses rather than directly execut= ing OAM functions. At this level, I think the OAM model can be technology a= gnostic because the OAM parameters COMS would like to collect from differen= t domains need to be aligned. However, the actual OAM functions each domain is based on may be different. On the = other hand, COMS may need to execute OAM functions directly if there are generic resource elements that are directly under COMS= control. Also I am not very familiar with SFC OAM, could you share more in= formaiton on

 

I personally think COMS&nb= sp;itself should not include the southbound mapping because there was = an assumption that anything below COMS is not aware of "slice" (a= lthough in management perspective, COMS may see some of them "Subnets"). Existing WG/technologies may refer to/map with = COMS models if they would like to be part of the managed network slice= instance. Eventually, it may be us - the people from COMS community, who w= ill be actively progressing these southbound interfaces in various IETF WGs.

 

>HFl: What you say above would be an ideal situation, but I am afraid= that in practice the situation is such that also other WGs are working on = slicing. See https://www.ietf.org/id/draft-ietf-teas-actn-framework-11.txt


>>[LG] Yes, you are absolutely correct! What I mean is that whethe= r or not a specific technology domain is working on slice, COMS does not ne= ed to know. The SBI of COMS delivers configuration models - the domain cont= rol apply this configuration based on their own technology choices.

 

In principle, COMS itself = provides the capability of inter-operation between different domains. This = capability is enabled by common information model/service model and related= OAM models/mechanisms. The southbound mapping is implementation-specific in the view of COMS and may be mor= e suitable to be carried out in various technology-specific WGs. A goo= d example would be that for a link from node A to node B requiring 100= Mbit/s peak bandwidth and maximum of 5ms latency, one can map this using various type of SD-WAN(VPN) controllers with differ= ent underlay data planes. COMS sees them as the same.

 

>HFl:  ok.

 

And also in terms of the w= orking load of WG, the southbound mapping could be endless, it may not= be feasible for COMS WG to deliver a sensible charter on this matter conce= rning southbound interfaces.

 

>HFl: right.

 

Meanwhile, I think it woul= d be good if we can first of all deliver a/several information models = so that the southbound technology domain can chose the materials they need = to map with. We can do this by categorizing the resources as Cristina suggested as "classifications" - = which may make the model more systematic. However, it is not necessary= to limit the southbound to one category - it should be able= to pick parameters/components whatever are needed.

 

>HFl: this a bit unclear to me. Maybe you can elaborate your thoughts= further.

>>[LG] Here I mean if the information model which defines the temp= late of parameters of various type of resource tends to be to complex, we c= ould split it into several information models based on the categories of re= sources. A specific technology domain may define their own network configuration model (specific SBI of COMS) b= ased on those information models. Of course, the information model could al= so be just one as we did now. The other thing I would like to point ou= t for discussion is that we may need to define a generic SBI or network configuration model in cases where resources=  are directly managed/control by COMS. What do yo think?

 

Best wishes

Liang

 

From: Netslices <netslices-bounces@ietf.org> on behalf of Flinck, Hannu (N= okia - FI/Espoo) <ha= nnu.flinck@nokia-bell-labs.com>
Sent: 22 December 2017 22:02:46
To: qiangli (D); NetSlices@iet= f.org
Subject: Re: [Netslices] Open Issue I: SouthBound/Mapping Interface<= /span>

 

Ok. Think I what= you might be after. Probably what you want is to have a set of reference o= r example mappings for few representative technologies? Such as

 

-   &nbs= p;      A slice over the WAN/transport netw= ork for a given technology,

-   &nbs= p;      A slice over VNF infrastructure (SF= Cs and nvo3),

-   &nbs= p;      A slice that is a concatenation of = the two across different domains (this we know is missing).

 

Is this what you= would like to see? If so, it sounds to me reasonable and motivating work a= nd would be  useful to identify possible gaps and needed additions.

 

Best regards

Hannu

 

From: qiangli (D) [mailto:qiangli3@huaw= ei.com]
Sent: Friday, December 22, 2017 3:09 PM
To: Flinck, Hannu (Nokia - FI/Espoo) <hannu.flinck@nokia-bell-labs.com>; NetSlices@ietf.org
Subject: RE: [Netslices] Open Issue I: SouthBound/Mapping Interface<= /span>

 

Hi Hannu,

 

You=92re right. Sti= ll that question, If there does not exist a uniform mapping interface betwe= en COMS and various implementation technologies, I am afraid we are unable = to analyze all possibilities.  That=92s why I suggested option 3 even I=92m also not sure whether we can find out = an appropriate classification method.

 

Best regards,

 

Cristina QIANG

 

From: Flinck, Hannu (Nokia - FI/Espoo) [mailto:hannu.flinck@nokia-bell-labs.com]
Sent: Thursday, December 21, 2017 9:43 PM
To: qiangli (D) <qiangli3@= huawei.com>; NetSlices@ietf.org
Subject: RE: [Netslices] Open Issue I: SouthBound/Mapping Interface<= /span>

 

Hello Cristina

 

I am not sure I = understand the option 3 sufficiently. What would be the use of the classifi= cation? Should we identify classes of technologies that can be served by sa= me/similar mapping based on the classification?

 

Best regards

Hannu

 

From: Netslices [mailto:netslices-bounces@ietf.org] On Behalf Of qiangli (D)
Sent: Thursday, December 21, 2017 11:02 AM
To: Flinck, Hannu (Nokia - FI/Espoo) <hannu.flin= ck@nokia-bell-labs.com>; NetSlices@ietf.org
Subject: Re: [Netslices] Open Issue I: SouthBound/Mapping Interface<= /span>

 

Hi Hannu and  = others,

 

 

Thank you for your = comments. As you and Diego mentioned, the standardization of southbound int= erface is a sensitive matter, we=92d better avoid infringing other WGs/RGs.=

 

To solve this issue= , maybe we should figure out =93Is it possible to have a uniform/standard m= apping interface to adapt to a variety of implementation technologies?=94 f= irst. If Pedro is right, such uniform interface does exist, then it=92s not a big deal to standardize it IMHO. Otherwise, = I think we may need to consider which option listed below will be better:

 

Option 1: No standa= rdization work on southbound interface, at least before IETF 101

Option 2: Separatel= y analyze all specific technologies as you have done -- ACTN [un-checked], = NFV [checked], then how about SFC, VPN=85?

Option 3: Classify = technologies (e.g., providing connectivity, provide VNF=85.) , then discuss= for each classification.

 

I personally prefer= 1 or 3, what=92s your opinion?

 

Best regards,

 

Cristina QIANG

 

From: Flinck, Hannu (Nokia - FI/Espoo) [mailto:hannu.flinck@n= okia-bell-labs.com]
Sent: Wednesday, December 20, 2017 10:33 PM
To: qiangli (D) <qiangli3@huawei.com>; NetSlices@ietf.org
Subject: RE: [Netslices] Open Issue I: SouthBound/Mapping Interface<= /span>

 

Hello Cristina a= nd others,

 

I would suggest = that  COMS/ATCN interface mapping would be developed in the TEAS WG si= nce that is an IETF WG, is also alluding to slicing topics, has related spe= cifications and the expertise of the transport networks.

 

However, NFVO re= lated work is currently within NVFRG where the slicing work is a minor subs= et of much larger territory of what the RG is discussing.  Therefore, = it would be better to do such focused work in COMS when and if it becomes an IETF WG.

 

 

Best regards

Hannu

 

From: Netslices [mailto:netslices-bounces@ietf.org] On Behalf Of qiangli (D)
Sent: Wednesday, December 13, 2017 10:41 AM
To: NetSlices@ietf.org
Subject: [Netslices] Open Issue I: SouthBound/Mapping Interface

 

Hi All,

 

This email is want to collect your opinion on the= following issue:

 

Do we need to standardize the Southbound/Mapping = interface of a network slice aware system in COMS? Or do you think this wor= k should be carried out in existing WGs/RGs? (e.g., mapping interface betwe= en COMS and ACTN, mapping interface between COMS and NFVO)

 

Best regards,

 

Cristina QIANG

 

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Hi Cristina, Hannu and Lei,


I would like to think it in this = way. Please see if this make sense to you.


-It is preferred in COMS NOT to d= efine network configuration model (SBI) for each technology domains.

-It may be preferred in COMS to d= o some sort of categorization based on the type of resources at the level o= f information model. This makes it easier for different domain control= lers to define specific network configuration models (SBI of COMS, or "mappings" in previous discussion in thi= s tread )

-It may be preferred in COMS to d= efine a generic network configuration model that is used for SBI with resou= rces directly managed by COMS.


What do you think?




From: Netslices <netslic= es-bounces@ietf.org> on behalf of qiangli (D) <qiangli3@huawei.com>= ;
Sent: 04 January 2018 17:11:29
To: Lei Wang; NetSlices
Subject: Re: [Netslices] Open Issue I: SouthBound/Mapping Interface<= /font>
 

Hi Lei Wang,

 

Thank you for your= comments. I think an example given by Hannu could be used to explain optio= n 3

 

=A1=B0Probably what you want is t= o have a set of reference or example mappings for few representative techno= logies? Such as

 

-   &nbs= p;      A slic= e over the WAN/transport network for a given technology,

-   &nbs= p;      A slic= e over VNF infrastructure (SFCs and nvo3),

-   &nbs= p;      A slic= e that is a concatenation of the two across different domains (this we know= is missing).=A1=B1

 

Best regards,

 

Cristina QIANG

 

From: Netslices [mailto:netslices-bounces@ietf.org] On Behalf Of Lei Wang
Sent: Thursday, January 04, 2018 3:12 PM
To: qiangli (D) <qiangli3@huawei.com>; NetSlices <NetSlices= @ietf.org>
Subject: Re: [Netslices] Open Issue I: SouthBound/Mapping Interface<= /span>

 

Hi = Cristina,

&nb= sp;

I a= gree with the Option 1. Maybe it is not the proper time to do  SBI sta= ndardization work in COMS now, not matter in terms of opportunity or techno= logy.

&nb= sp;

Abo= ut the Option 3,  do you mean we can discuss different situations of S= BI according to respenctive technologies in information model that can be delivered to multi-domains ( e.g. ACTN, Detnet...) ? Or what you want to s= ay is the classification of technology domains?

&nb= sp;

&nb= sp;

Kin= d Regards

&nb= sp;

Lei= Wang

&nb= sp;

&nb= sp;

&nb= sp;

From: qiangli (D)

Date: 2017-12-21 = ;17:02

Subject: Re: [Netslic= es] Open Issue I: SouthBound/Mapping Interface

Hi Hannu and  others,<= span lang=3D"EN-US" style=3D"font-size:10.5pt; font-family:"Calibri&qu= ot;,sans-serif; color:black">

 

 

Thank you for your comments. As yo= u and Diego mentioned, the standardization of southbound interface is a sensitive matter, we=A1=AFd better avoid infringing other W= Gs/RGs.

 

To solve this issue, maybe we shou= ld figure out =A1=B0Is it possible to have a uniform/standard mapping interface to adapt to a variety of implementation technologies?=A1= =B1 first. If Pedro is right, such uniform interface does exist, then it=A1= =AFs not a big deal to standardize it IMHO. Otherwise, I think we may need = to consider which option listed below will be better:

Option 1: No standardization work = on southbound interface, at least before IETF 101

Option 2: Separately analyze all s= pecific technologies as you have done -- ACTN [un-checked], NFV [checked], then how about SFC, VPN=A1=AD?

Option 3: Classify technologies (e= .g., providing connectivity, provide VNF=A1=AD.) , then discuss for each classification.

 

I personally prefer 1 or 3, what= =A1=AFs your opinion?

 

Best regards,

 

Cristina QIANG

 

From: Flinck, Hannu (Nokia - FI/Espoo) [mailto:hannu.flinck@nokia-bell-labs.com]
Sent: Wednesday, December 20, 2017 10:33 PM
To: qiangli (D) <qiangli3@= huawei.com>; NetSlices@ietf.org
Subject: RE: [Netslices] Open Issue I: SouthBound/Mapping Interface<= /span>

 

Hello Cristina and others,

 

I would suggest that  COMS/ATCN= interface mapping would be developed in the TEAS WG since that is an IETF WG, is also alluding to slicing topics, has related specif= ications and the expertise of the transport networks.

 

However, NFVO related work is curren= tly within NVFRG where the slicing work is a minor subset of much larger territory of what the RG is discussing.  Theref= ore, it would be better to do such focused work in COMS when and if it beco= mes an IETF WG.

 

 

Best regards

Hannu

 

From: Netslices [mailto:= netslices-bounces@ietf.org] On Behalf Of qiangli (D)
Sent: Wednesday, December 13, 2017 10:41 AM
To: NetSlices@ietf.o= rg
Subject: [Netslices] Open Issue I: SouthBound/Mapping Interface

 

Hi All,

 

This email is want to collect your o= pinion on the following issue:

 

Do we need to standardize the Southb= ound/Mapping interface of a network slice aware system in COMS? Or do you think this work should be carried out in existing WGs/R= Gs? (e.g., mapping interface between COMS and ACTN, mapping interface betwe= en COMS and NFVO)

 

Best regards,

 

Cristina QIANG

 

--_000_PS1PR0601MB148378B5C9C917D3D4AE8DDD87100PS1PR0601MB1483_-- From nobody Tue Jan 9 08:43:40 2018 Return-Path: X-Original-To: netslices@ietfa.amsl.com Delivered-To: netslices@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 41A2A12D77B for ; Tue, 9 Jan 2018 08:43:38 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2.698 X-Spam-Level: X-Spam-Status: No, score=-2.698 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, FREEMAIL_FROM=0.001, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_LOW=-0.7, SPF_PASS=-0.001, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=gmail.com Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id HIreTnpJLoio for ; Tue, 9 Jan 2018 08:43:35 -0800 (PST) Received: from mail-qk0-x22a.google.com (mail-qk0-x22a.google.com [IPv6:2607:f8b0:400d:c09::22a]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 04E4A12D574 for ; Tue, 9 Jan 2018 08:43:35 -0800 (PST) Received: by mail-qk0-x22a.google.com with SMTP id b76so6428941qkc.1 for ; Tue, 09 Jan 2018 08:43:34 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :cc; bh=esIfcjXP0oSBs4oxfCQgw16QywKWTRyrjVIRbpspMs4=; b=Zww+DIshmOxFCWbr7h/RXRLW21HjF0RsVOq798qtNW1XdiTbNrQX6MnncXAXYkIkHn jOsloy/jeOePKigV+5cJKrWk8R09yoSBlvlTlKxsxcPcXGhYyCQ1p+ePdDEefJb7l5P+ Eed7kIaSbUBXUinf5ewakAMNqqRD5cu8ImVL+8rCfUUyWk+5pZa3ES0+JF+z7RnpFI4+ 6HKOlF09j+88jmT+Ho/9aVH9vQwJbMbR0ecIP+fVOTYmGOZivogBg2GqeirnobN0gtAs lmBhuCy/rfDjaHeyWbdRWJTuj9GPmycIzuHDtXYEtF0S5BVY32EHWINJLt6W4kTcqYhk sICQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:in-reply-to:references:from:date :message-id:subject:to:cc; bh=esIfcjXP0oSBs4oxfCQgw16QywKWTRyrjVIRbpspMs4=; b=Pn296uam3EjcibxOfr6bc8raytglfunFHFQXalptG80ldmPjowBVUVM1YqurkAOQEb mkcVcKEHeiioNnnt1lQRLcoEbCcvgukooWcRgL/UdS4ocMAWWI9XFH/8NgSP+g/Q05Mm elikzo9F72cgVh2JQCH8xkXVPCe1b1YP1/OFaeDVtCeYE5eSf9HOpwWc5Y0DGgwv3Tyv u7ejn7/HmYMpTJZp8FbnQ0BNGdxcdAzNsDdBP69FP8krN1HUpcMH0aiu7N+AcaNblyZy 33OfRW1vipdWdHoSuhgxDAN7dJH5t18Csoh9R+k7s/NsGrGT8r0gnMR+PXg+K66YTu9G D9Yw== X-Gm-Message-State: AKwxytfnj1aHdeBqS8h8aHlfV7onbh9Zi2LGkTvcF+1eC5lr9l5RsynI s3LKSaVe/XMRHi8fggt63umWke0NC/LLt6eYh6Q= X-Google-Smtp-Source: ACJfBos+nYveiQmBuZmgbASZ2SjX4HdDk7oXuslTbXaV7OkQebN9uSENQtN4OVkFUpTZsbIgQ/fwuWLJYGnf6UBfSw8= X-Received: by 10.55.147.133 with SMTP id v127mr22393743qkd.81.1515516214075; Tue, 09 Jan 2018 08:43:34 -0800 (PST) MIME-Version: 1.0 Received: by 10.200.52.79 with HTTP; Tue, 9 Jan 2018 08:43:33 -0800 (PST) In-Reply-To: References: From: Xavier de Foy Date: Tue, 9 Jan 2018 11:43:33 -0500 Message-ID: To: Liang GENG Cc: "De Foy, Xavier" , "Geng, Liang" , "NetSlices@ietf.org" Content-Type: multipart/alternative; boundary="94eb2c08b3009766fa05625a9d73" Archived-At: Subject: Re: [Netslices] Input for problem statement X-BeenThere: netslices@ietf.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: "This list is intended for discussion and review of network slicing at IETF." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 09 Jan 2018 16:43:38 -0000 --94eb2c08b3009766fa05625a9d73 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Hi Liang, Sure, it makes sense that in some cases, end-to-end slice management may be realized by the service that sits above the COMS model. Actually we can probably update the diagram to show both possibilities (and also remove RAN/CN to be more general). For example: +----------------------------------------------------------+ | Network Slice as a Service | | +-------------------------------------+ +--------------+ | | | Network Slice Template | | | | | | +---------+ +---------+ +---------+ | | Customized | | | | | 5G | | Internet| |Verticals| | | Network Slice| | | | | centric | | VPN | |Industry | | | | | | | +---------+ +---------+ +---------+ | | | | | +-------------------------------------+ +----+---------+ | | | | | | | | | | +------v----------------------------v----+ | | | Network Slice Service Profile | | | +----------------+----------+------------+ | | | . | +----------------------------------------------------------+ | . | . | . | +..............+ | . | . |COMS .COMS +--------------v-----------------+ +-----v----+ | Network Slice Controller | | Nw Slice | | | | Ctrlr | +--------+----------+---------+-++ +----------+ | | | | | +---+ | | | +----------+ | | | | |COMS +------+-----+ +----+----+ +---+----+ +--+--------+ +-+--------+ |Connectivity| |Computing| | Storage| |Generalized| | Nw Slice | | | | | | | |Functions | | Ctrlr | +------------+ +---------+ +--------+ +-----------+ +----------+ Regards, Xavier On Tue, Jan 9, 2018 at 9:53 AM, Liang GENG wrote: > Hi Xavier, > > > Thanks for your very helpful suggestion. > > > As we discussed during IETF100, I believe the recursive nature of COMS is > very important and it is sensible to make the terms aligned with NGMN > definition. I will update the problem statement draft accordingly. > > > In additional, do you think we can take out the end-to-end slice manager > for non-3GPP scenarios since the COMS may comes into the picture from the > top-level slice manager/controller? > > > Best wishes > > Liang > > > ------------------------------ > *From:* Netslices on behalf of De Foy, > Xavier > *Sent:* 06 December 2017 04:21:07 > *To:* Geng, Liang > *Cc:* NetSlices@ietf.org > *Subject:* [Netslices] Input for problem statement > > > Hi Liang, > > > > This is to follow-up our conversation at IETF 100 about > draft-geng-coms-problem-statement, and share on the list. The goal would > be to make a recursive use of the same (COMS) model, from top to bottom. > > > > A secondary point would be to align our use of the terms =E2=80=9Cslice= segment=E2=80=9D > and =E2=80=9Cslice subnet=E2=80=9D across drafts. Since =E2=80=9Csubnet= =E2=80=9D is defined by NGMN it > could be simpler to use that term, as long as our definition is compatibl= e > with NGMN. There is a definition in the interconnection draft. > > > > Please consider the following figure as input for an update to figure 2= : > e.g. =E2=80=9Ccross-segment=E2=80=9D could become =E2=80=9Cend-to-end=E2= =80=9D, =E2=80=9Csegment-specific=E2=80=9D could > become =E2=80=9Ctechnology specific=E2=80=9D, etc. > > > > One additional thing we could consider is using a single term =E2=80=9C= manager=E2=80=9D > or =E2=80=9Ccontroller=E2=80=9D. This would be better aligned with the re= cursive nature of > COMS (e.g. an e2e slice manager may be used to manager/control a slice > subnet for a larger slice). > > > > > > NSaaS and +------------------------------------------+ > > End-to-end | Network Slice Tenant | > > Network +-+----------------------------------------+ > > Slice | Requests a NSaaS Service > > Management | > > ^ +-v----------------------------------------+ > > | | Network Slice Service Provider | > > | +-+----------------------------------------+ > > | | Generates an end-to-end Slice Model > > | | > > | +-v----------------------------------------+ ^ > > | | E2e slice manager (COMS model) | | > > | +-+----------------------------------------+ | NS > > | | Decomposed by End-to-end | Layer > > | | Network Slice Manager | > > | +-v----------------------------------------+ | > > ------------|Slice controllers (COMS model for subnets)| | > > | | (may include multiple controllers) | | > > v +----+---------------+---------------+-----+ v > > Tech-specific | | | > > Network Slice | | | > > Management +------v------+ +------v------+ +------v------+ > > and | Network | | Network | | Network | > > Implementation |Configuration| |Configuration| |Configuration| > > | Model I | | Model II | | Model III | > > +-------------+ +-------------+ +-------------+ > > > > > > And to match it, here is some input for figure 1: > > > > +----------------------------------------------------------+ > > | Network Slice as a Service | > > | +-------------------------------------+ +--------------+ | > > | | Network Slice Template | | | | > > | | +---------+ +---------+ +---------+ | | Customized | | > > | | | 5G | | Internet| |Verticals| | | Network Slice| | > > | | | centric | | VPN | |Industry | | | | | > > | | +---------+ +---------+ +---------+ | | | | > > | +-------------------------------------+ +----+---------+ | > > | | | | > > | | | | > > | +------v----------------------------v----+ | > > | | Network Slice Service Profile | | > > | +----------------+-----------------------+ | > > | | | > > +----------------------------------------------------------+ > > | > > +---------v----------+ > > | End-to-end | > > +------------+ Slice Manager +--------------+ > > | +---------+----------+ | > > | | | > > | | | > > +----v----+ +--------------v-----------------+ +-----v----+ > > | RAN | | Network Slice Controller | | CN | > > | Slice | | | | Slice | > > | Ctrlr | +--------+----------+---------+-++ | Ctrlr | > > +---------+ | | | | | +----------+ > > +---+ | | | +----------+ > > | | | | | > > +------+-----+ +----+----+ +---+----+ +--+--------+ +-+--------+ > > |Connectivity| |Computing| | Storage| |Generalized| | Nw Slice | > > | | | | | | |Functions | | Ctrlr | > > +------------+ +---------+ +--------+ +-----------+ +----------+ > > > > Best Regards, > > > > Xavier. > > > > _______________________________________________ > Netslices mailing list > Netslices@ietf.org > 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Precedence: list List-Id: "This list is intended for discussion and review of network slicing at IETF." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 09 Jan 2018 17:28:57 -0000 --_004_HE1PR0701MB2714BE78F2CD35A6075904F8F0100HE1PR0701MB2714_ Content-Type: multipart/alternative; boundary="_000_HE1PR0701MB2714BE78F2CD35A6075904F8F0100HE1PR0701MB2714_" --_000_HE1PR0701MB2714BE78F2CD35A6075904F8F0100HE1PR0701MB2714_ Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Hi Lei Wang, Cristina, all, i think it is important, first of all, to decide which type of model you wa= nt to address. The drawing from Cristina (from https://datatracker.ietf.org= /doc/draft-ietf-opsawg-service-model-explained/) is an excellent starting= point. In my opinion you should not try to map "more or less" what you have with o= ne of the models below, but on the other side discuss which one you want to= address (e.g. Service Delivery Model) and then proceed on that path. That said, if I correctly understood you don't want to address the models o= n the SBI of the network orchestrator (i.e. Network configuration model or = device model), hence you need to decide if you want to build a service deli= very model or a service model (to start with). BR Daniele [cid:image001.png@01D38977.9E8312A0] From: Netslices [mailto:netslices-bounces@ietf.org] On Behalf Of Liang GENG Sent: marted=EC 9 gennaio 2018 16:43 To: qiangli (D) ; Lei Wang ; Net= Slices Subject: Re: [Netslices] Open Issue I: SouthBound/Mapping Interface Hi Cristina, Hannu and Lei, I would like to think it in this way. Please see if this make sense to you. -It is preferred in COMS NOT to define network configuration model (SBI) fo= r each technology domains. -It may be preferred in COMS to do some sort of categorization based on the= type of resources at the level of information model. This makes it easier = for different domain controllers to define specific network configuration m= odels (SBI of COMS, or "mappings" in previous discussion in this tread ) -It may be preferred in COMS to define a generic network configuration mode= l that is used for SBI with resources directly managed by COMS. What do you think? ________________________________ From: Netslices > on behalf of qiangli (D) > Sent: 04 January 2018 17:11:29 To: Lei Wang; NetSlices Subject: Re: [Netslices] Open Issue I: SouthBound/Mapping Interface Hi Lei Wang, Thank you for your comments. I think an example given by Hannu could be use= d to explain option 3 "Probably what you want is to have a set of reference or example mappings f= or few representative technologies? Such as - A slice over the WAN/transport network for a given technology, - A slice over VNF infrastructure (SFCs and nvo3), - A slice that is a concatenation of the two across different doma= ins (this we know is missing)." Best regards, Cristina QIANG From: Netslices [mailto:netslices-bounces@ietf.org] On Behalf Of Lei Wang Sent: Thursday, January 04, 2018 3:12 PM To: qiangli (D) >; NetSlice= s > Subject: Re: [Netslices] Open Issue I: SouthBound/Mapping Interface Hi Cristina, I agree with the Option 1. Maybe it is not the proper time to do SBI stand= ardization work in COMS now, not matter in terms of opportunity or technolo= gy. About the Option 3, do you mean we can discuss different situations of SBI= according to respenctive technologies in information model that can be del= ivered to multi-domains ( e.g. ACTN, Detnet...) ? Or what you want to say i= s the classification of technology domains? Kind Regards Lei Wang ________________________________ leiw0920@outlook.com From: qiangli (D) Date: 2017-12-21 17:02 To: Flinck, Hannu (Nokia - FI/Espoo); NetSlices@ietf.org Subject: Re: [Netslices] Open Issue I: SouthBound/Mapping Interface Hi Hannu and others, Thank you for your comments. As you and Diego mentioned, the standardizatio= n of southbound interface is a sensitive matter, we'd better avoid infringi= ng other WGs/RGs. To solve this issue, maybe we should figure out "Is it possible to have a u= niform/standard mapping interface to adapt to a variety of implementation t= echnologies?" first. If Pedro is right, such uniform interface does exist, = then it's not a big deal to standardize it IMHO. Otherwise, I think we may = need to consider which option listed below will be better: Option 1: No standardization work on southbound interface, at least before = IETF 101 Option 2: Separately analyze all specific technologies as you have done -- = ACTN [un-checked], NFV [checked], then how about SFC, VPN...? Option 3: Classify technologies (e.g., providing connectivity, provide VNF.= ...) , then discuss for each classification. I personally prefer 1 or 3, what's your opinion? Best regards, Cristina QIANG From: Flinck, Hannu (Nokia - FI/Espoo) [mailto:hannu.flinck@nokia-bell-labs= .com] Sent: Wednesday, December 20, 2017 10:33 PM To: qiangli (D) >; NetSlice= s@ietf.org Subject: RE: [Netslices] Open Issue I: SouthBound/Mapping Interface Hello Cristina and others, I would suggest that COMS/ATCN interface mapping would be developed in the= TEAS WG since that is an IETF WG, is also alluding to slicing topics, has = related specifications and the expertise of the transport networks. However, NFVO related work is currently within NVFRG where the slicing work= is a minor subset of much larger territory of what the RG is discussing. = Therefore, it would be better to do such focused work in COMS when and if i= t becomes an IETF WG. Best regards Hannu From: Netslices [mailto:netslices-bounces@ietf.org] On Behalf Of qiangli (D= ) Sent: Wednesday, December 13, 2017 10:41 AM To: NetSlices@ietf.org Subject: [Netslices] Open Issue I: SouthBound/Mapping Interface Hi All, This email is want to collect your opinion on the following issue: Do we need to standardize the Southbound/Mapping interface of a network sli= ce aware system in COMS? Or do you think this work should be carried out in= existing WGs/RGs? (e.g., mapping interface between COMS and ACTN, mapping = interface between COMS and NFVO) Best regards, Cristina QIANG --_000_HE1PR0701MB2714BE78F2CD35A6075904F8F0100HE1PR0701MB2714_ Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

Hi Lei Wang, Cristina, a= ll,

 =

i think i= t is important, first of all, to decide which type of model you want to add= ress. The drawing from Cristina (from https://datatracker.ietf.org/doc/draft-ietf-opsawg-service-model-explained/= )   is an excellent starting point.

In my opi= nion you should not try to map “more or less” what you have wit= h one of the models below, but on the other side discuss which one you want to address (e.g. Service Delivery Model) and then proceed on = that path.

That said= , if I correctly understood you don’t want to address the models on t= he SBI of the network orchestrator (i.e. Network configuration model or device model), hence you need to decide if you want to build a se= rvice delivery model or a service model (to start with).<= /p>

BR
Daniele

&nbs= p;

 =

From: = Netslices [mailto:netslices-bounces@ietf.org] On Behalf Of Liang GENG
Sent: marted=EC 9 gennaio 2018 16:43
To: qiangli (D) <qiangli3@huawei.com>; Lei Wang <leiw0920@o= utlook.com>; NetSlices <NetSlices@ietf.org>
Subject: Re: [Netslices] Open Issue I: SouthBound/Mapping Interface<= o:p>

 

H= i Cristina, Hannu and Lei,

<= o:p> 

I= would like to think it in this way. Please see if this make sense to you.<= o:p>

<= o:p> 

-= It is preferred in COMS NOT to define network configuration model (SBI= ) for each technology domains.

-= It may be preferred in COMS to do some sort of categorization based on the = type of resources at the level of information model. This makes it easier f= or different domain controllers to define specific network configuration models (SBI of COMS, or "mappings" in prev= ious discussion in this tread )

-= It may be preferred in COMS to define a generic network configuration model= that is used for SBI with resources directly managed by COMS.

<= o:p> 

W= hat do you think?

<= o:p> 

<= o:p> 

<= o:p> 

From: Netsli= ces <netslices-bounces@iet= f.org> on behalf of qiangli (D) <qiangl= i3@huawei.com>
Sent: 04 January 2018 17:11:29
To: Lei Wang; NetSlices
Subject: Re: [Netslices] Open Issue I: SouthBound/Mapping Interface<= /span>

 

Hi Lei Wang,

 

Thank you for your co= mments. I think an example given by Hannu could be used to explain option 3=

 

“Probably what you want is to= have a set of reference or example mappings for few representative technol= ogies? Such as

 

-          A slice over the WAN= /transport network for a given technology,

-          A slice over VNF inf= rastructure (SFCs and nvo3),

-          A slice that is a co= ncatenation of the two across different domains (this we know is missing).&= #8221;

 

Best regards,

 

Cristina QIANG

 

From:= Netslices [mailto:netslices-= bounces@ietf.org] On Behalf Of Lei Wang
Sent: Thursday, January 04, 2018 3:12 PM
To: qiangli (D) <qiangli3@= huawei.com>; NetSlices <Net= Slices@ietf.org>
Subject: Re: [Netslices] Open Issue I: SouthBound/Mapping Interface<= /span>

 

Hi Cristina,

 

I agree with th= e Option 1. Maybe it is not the proper time to do  SBI standardization= work in COMS now, not matter in terms of opportunity or technology.

 

About the Optio= n 3,  do you mean we can discuss different situations of SBI according= to respenctive technologies in information model that can be delivered to multi-domains ( e.g. ACTN, Detnet...) ? Or what you wa= nt to say is the classification of technology domains?

 

 

Kind Regards

 

Lei Wang=

 

 

 

From: qiangli (D)

Date: 2017-12-21 17:0= 2

Subject: Re: [Netslices] Open Issue I: SouthBound/Mapping Interface

Hi Hannu and  others,=

 

 

Thank you for your comments. As you an= d Diego mentioned, the standardization of southbound interface is a sensitive matter, we’d better avoid infringing other = WGs/RGs.

 

To solve this issue, maybe we should f= igure out “Is it possible to have a uniform/standard mapping interface to adapt to a variety of implementation technologies?= 221; first. If Pedro is right, such uniform interface does exist, then it&#= 8217;s not a big deal to standardize it IMHO. Otherwise, I think we may nee= d to consider which option listed below will be better:

Option 1: No standardization work on s= outhbound interface, at least before IETF 101

Option 2: Separately analyze all speci= fic technologies as you have done -- ACTN [un-checked], NFV [checked], then how about SFC, VPN…?

Option 3: Classify technologies (e.g.,= providing connectivity, provide VNF….) , then discuss for each classification.

 

I personally prefer 1 or 3, what’= ;s your opinion?

 

Best regards,

 

Cristina QIANG

 

From: Flinck, Hannu (Nokia - FI/Espoo) [mailto:hannu.flinck@nokia-bell-labs.com]
Sent: Wednesday, December 20, 2017 10:33 PM
To: qiangli (D) <qiangli3@= huawei.com>; NetSlices@ietf.org
Subject: RE: [Netslices] Open Issue I: SouthBound/Mapping Interface<= /span>

 

Hello Cristina and others,

 

I would suggest that  COMS/ATCN int= erface mapping would be developed in the TEAS WG since that is an IETF WG, is also alluding to slicing topics, has related specif= ications and the expertise of the transport networks.

 

However, NFVO related work is currently = within NVFRG where the slicing work is a minor subset of much larger territory of what the RG is discussing.  Therefore, it= would be better to do such focused work in COMS when and if it becomes an = IETF WG.

 

 

Best regards

Hannu

 

From: Netslices [mailto:net= slices-bounces@ietf.org] On Behalf Of qiangli (D)
Sent: Wednesday, December 13, 2017 10:41 AM
To: NetSlices@ietf.org<= /span>
Subject: [Netslices] Open Issue I: SouthBound/Mapping Interface

 

Hi All,

 

This email is want to collect your opini= on on the following issue:

 

Do we need to standardize the Southbound= /Mapping interface of a network slice aware system in COMS? Or do you think this work should be carried out in existing WGs/R= Gs? (e.g., mapping interface between COMS and ACTN, mapping interface betwe= en COMS and NFVO)

 

Best regards,

 

Cristina QIANG

 

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X-MS-Exchange-Transport-CrossTenantHeadersStamped: SG2APC01HT115 Archived-At: Subject: Re: [Netslices] Open Issue I: SouthBound/Mapping Interface X-BeenThere: netslices@ietf.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: "This list is intended for discussion and review of network slicing at IETF." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 09 Jan 2018 17:54:54 -0000 --_004_PS1PR0601MB148352B3A19838DF2B02E1CE87100PS1PR0601MB1483_ Content-Type: multipart/alternative; boundary="_000_PS1PR0601MB148352B3A19838DF2B02E1CE87100PS1PR0601MB1483_" --_000_PS1PR0601MB148352B3A19838DF2B02E1CE87100PS1PR0601MB1483_ Content-Type: text/plain; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable Hi Daniele and all, This graph is a perfect reference. Thanks for this! COMS system is at the same level as "network orchestrator" in this graph. = I believe COMS will need to have a information model(s) as templates of a "= network slice". It should also address NBI service delivery model. For Service Model, I am not sure - how much difference is there as to Servi= ce Delivery Model. Might they be converged to one level in some cases? As to the SBI, a generic network configuration model may be useful while ot= her specific ones may be more feasible to be addressed by different technol= ogy domains respectively according to COMS information model(s). We started from COMS information model - trying to confine the scope of res= ource elements that can be used for network slice. This should provide a ge= neral reference to both NBI and SBI. Best wishes Liang ________________________________ From: Daniele Ceccarelli Sent: 10 January 2018 01:28:19 To: Liang GENG; qiangli (D); Lei Wang; NetSlices Subject: RE: Re: [Netslices] Open Issue I: SouthBound/Mapping Interface Hi Lei Wang, Cristina, all, i think it is important, first of all, to decide which type of model you wa= nt to address. The drawing from Cristina (from https://datatracker.ietf.org= /doc/draft-ietf-opsawg-service-model-explained/) is an excellent starting= point. In my opinion you should not try to map =93more or less=94 what you have wi= th one of the models below, but on the other side discuss which one you wan= t to address (e.g. Service Delivery Model) and then proceed on that path. That said, if I correctly understood you don=92t want to address the models= on the SBI of the network orchestrator (i.e. Network configuration model o= r device model), hence you need to decide if you want to build a service de= livery model or a service model (to start with). BR Daniele [cid:image001.png@01D38977.9E8312A0] From: Netslices [mailto:netslices-bounces@ietf.org] On Behalf Of Liang GENG Sent: marted=EC 9 gennaio 2018 16:43 To: qiangli (D) ; Lei Wang ; Net= Slices Subject: Re: [Netslices] Open Issue I: SouthBound/Mapping Interface Hi Cristina, Hannu and Lei, I would like to think it in this way. Please see if this make sense to you. -It is preferred in COMS NOT to define network configuration model (SBI) fo= r each technology domains. -It may be preferred in COMS to do some sort of categorization based on the= type of resources at the level of information model. This makes it easier = for different domain controllers to define specific network configuration m= odels (SBI of COMS, or "mappings" in previous discussion in this tread ) -It may be preferred in COMS to define a generic network configuration mode= l that is used for SBI with resources directly managed by COMS. What do you think? ________________________________ From: Netslices > on behalf of qiangli (D) > Sent: 04 January 2018 17:11:29 To: Lei Wang; NetSlices Subject: Re: [Netslices] Open Issue I: SouthBound/Mapping Interface Hi Lei Wang, Thank you for your comments. I think an example given by Hannu could be use= d to explain option 3 =93Probably what you want is to have a set of reference or example mappings= for few representative technologies? Such as - A slice over the WAN/transport network for a given technology, - A slice over VNF infrastructure (SFCs and nvo3), - A slice that is a concatenation of the two across different doma= ins (this we know is missing).=94 Best regards, Cristina QIANG From: Netslices [mailto:netslices-bounces@ietf.org] On Behalf Of Lei Wang Sent: Thursday, January 04, 2018 3:12 PM To: qiangli (D) >; NetSlice= s > Subject: Re: [Netslices] Open Issue I: SouthBound/Mapping Interface Hi Cristina, I agree with the Option 1. Maybe it is not the proper time to do SBI stand= ardization work in COMS now, not matter in terms of opportunity or technolo= gy. About the Option 3, do you mean we can discuss different situations of SBI= according to respenctive technologies in information model that can be del= ivered to multi-domains ( e.g. ACTN, Detnet...) ? Or what you want to say i= s the classification of technology domains? Kind Regards Lei Wang ________________________________ leiw0920@outlook.com From: qiangli (D) Date: 2017-12-21 17:02 To: Flinck, Hannu (Nokia - FI/Espoo); NetSlices@ietf.org Subject: Re: [Netslices] Open Issue I: SouthBound/Mapping Interface Hi Hannu and others, Thank you for your comments. As you and Diego mentioned, the standardizatio= n of southbound interface is a sensitive matter, we=92d better avoid infrin= ging other WGs/RGs. To solve this issue, maybe we should figure out =93Is it possible to have a= uniform/standard mapping interface to adapt to a variety of implementation= technologies?=94 first. If Pedro is right, such uniform interface does exi= st, then it=92s not a big deal to standardize it IMHO. Otherwise, I think w= e may need to consider which option listed below will be better: Option 1: No standardization work on southbound interface, at least before = IETF 101 Option 2: Separately analyze all specific technologies as you have done -- = ACTN [un-checked], NFV [checked], then how about SFC, VPN=85? Option 3: Classify technologies (e.g., providing connectivity, provide VNF= =85.) , then discuss for each classification. I personally prefer 1 or 3, what=92s your opinion? Best regards, Cristina QIANG From: Flinck, Hannu (Nokia - FI/Espoo) [mailto:hannu.flinck@nokia-bell-labs= .com] Sent: Wednesday, December 20, 2017 10:33 PM To: qiangli (D) >; NetSlice= s@ietf.org Subject: RE: [Netslices] Open Issue I: SouthBound/Mapping Interface Hello Cristina and others, I would suggest that COMS/ATCN interface mapping would be developed in the= TEAS WG since that is an IETF WG, is also alluding to slicing topics, has = related specifications and the expertise of the transport networks. However, NFVO related work is currently within NVFRG where the slicing work= is a minor subset of much larger territory of what the RG is discussing. = Therefore, it would be better to do such focused work in COMS when and if i= t becomes an IETF WG. Best regards Hannu From: Netslices [mailto:netslices-bounces@ietf.org] On Behalf Of qiangli (D= ) Sent: Wednesday, December 13, 2017 10:41 AM To: NetSlices@ietf.org Subject: [Netslices] Open Issue I: SouthBound/Mapping Interface Hi All, This email is want to collect your opinion on the following issue: Do we need to standardize the Southbound/Mapping interface of a network sli= ce aware system in COMS? Or do you think this work should be carried out in= existing WGs/RGs? (e.g., mapping interface between COMS and ACTN, mapping = interface between COMS and NFVO) Best regards, Cristina QIANG --_000_PS1PR0601MB148352B3A19838DF2B02E1CE87100PS1PR0601MB1483_ Content-Type: text/html; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable

Hi Daniele and all,


This graph is a perfect reference= . Thanks for this!


COMS system is at the same level = as  "network orchestrator" in this graph. I believe COMS wil= l need to have a information model(s) as templates of a "network slice= ". It should also address NBI service delivery model.


For Service Model, I am not sure = - how much difference is there as to Service Delivery Model. Might they be = converged to one level in some cases?


As to the SBI, a generic network = configuration model may be useful while other specific ones may be more fea= sible to be addressed by different technology domains respectively acc= ording to COMS information model(s).


We started from COMS informa= tion model - trying to confine the scope of resource elements that can be u= sed for network slice. This should provide a general reference to both= NBI and SBI.


Best wishes

= Liang 

From: Daniele Ceccarelli &l= t;daniele.ceccarelli@ericsson.com>
Sent: 10 January 2018 01:28:19
To: Liang GENG; qiangli (D); Lei Wang; NetSlices
Subject: RE: Re: [Netslices] Open Issue I: SouthBound/Mapping Interf= ace
 

Hi Lei Wang, Cristina, all,

 

i think it is important, first of= all, to decide which type of model you want to address. The drawing from C= ristina (from https://datatracker.ietf.org/doc/draft-ietf-opsawg-service-model-explained/= )   is an excellent starting point.

In my opinion you should not try = to map =93more or less=94 what you have with one of the models below, but o= n the other side discuss which one you want to address (e.g. Service Delivery Model) and then proceed on that path.

That said, if I correctly underst= ood you don=92t want to address the models on the SBI of the network orches= trator (i.e. Network configuration model or device model), hence you need to decide if you want to build a service delivery m= odel or a service model (to start with).

BR
Daniele

 

 

From: Netslices [mailto:netslices-bounces@ietf.org] On Behalf Of Liang GENG
Sent: marted=EC 9 gennaio 2018 16:43
To: qiangli (D) <qiangli3@huawei.com>; Lei Wang <leiw0920@o= utlook.com>; NetSlices <NetSlices@ietf.org>
Subject: Re: [Netslices] Open Issue I: SouthBound/Mapping Interface<= /span>

 

= Hi Cristina, Hannu and Lei,

=  

= I would like to think it in this way. Please see if this make sense to you.=

=  

= -It is preferred in COMS NOT to define network configuration model (SB= I) for each technology domains.

= -It may be preferred in COMS to do some sort of categorization based on the= type of resources at the level of information model. This makes it easier = for different domain controllers to define specific network configuration models (SBI of COMS, or "mappings" in prev= ious discussion in this tread )

= -It may be preferred in COMS to define a generic network configuration mode= l that is used for SBI with resources directly managed by COMS.

=  

= What do you think?

=  

=  

=  

From: = Netslices <netslices-bounc= es@ietf.org> on behalf of qiangli (D) <qiangl= i3@huawei.com>
Sent: 04 January 2018 17:11:29
To: Lei Wang; NetSlices
Subject: Re: [Netslices] Open Issue I: SouthBound/Mapping Interface<= /span>

 

Hi Lei Wang,

 

Thank you for you= r comments. I think an example given by Hannu could be used to explain opti= on 3

 

=93Probably what you want is to = have a set of reference or example mappings for few representative technolo= gies? Such as

 

-          A slice over the WAN= /transport network for a given technology,

-          A slice over VNF inf= rastructure (SFCs and nvo3),

-          A slice that is a co= ncatenation of the two across different domains (this we know is missing).= =94

 

Best regards,

 

Cristina QIANG

 

From: Netslices [mailto:netsli= ces-bounces@ietf.org] On Behalf Of Lei Wang
Sent: Thursday, January 04, 2018 3:12 PM
To: qiangli (D) <qiangli3@= huawei.com>; NetSlices <Net= Slices@ietf.org>
Subject: Re: [Netslices] Open Issue I: SouthBound/Mapping Interface<= /span>

 

Hi Cristina= ,

 

I agree wit= h the Option 1. Maybe it is not the proper time to do  SBI standardiza= tion work in COMS now, not matter in terms of opportunity or technology.

 

About the O= ption 3,  do you mean we can discuss different situations of SBI accor= ding to respenctive technologies in information model that can be delivered to multi-domains ( e.g. ACTN, Detnet...) ? Or what y= ou want to say is the classification of technology domains?

 

 

Kind Regard= s

 

Lei Wang

 

 

 

From: qiangli (D)

Date: 2017-12-21&nbs= p;17:02

Subject: Re: [Netsli= ces] Open Issue I: SouthBound/Mapping Interface

Hi Hannu and  others,

 

 

Thank you for your comments. As you and Die= go mentioned, the standardization of southbound interface is a sensitive ma= tter, we=92d better avoid infringing other WGs/RGs.

 

To solve this issue, maybe we should figure= out =93Is it possible to have a uniform/standard mapping interface to adap= t to a variety of implementation technologies?=94 first. If Pedro is right, such uniform interface does exist, then it=92s n= ot a big deal to standardize it IMHO. Otherwise, I think we may need to con= sider which option listed below will be better:

Option 1: No standardization work on southb= ound interface, at least before IETF 101

Option 2: Separately analyze all specific t= echnologies as you have done -- ACTN [un-checked], NFV [checked], then how = about SFC, VPN=85?

Option 3: Classify technologies (e.g., prov= iding connectivity, provide VNF=85.) , then discuss for each classification= .

 

I personally prefer 1 or 3, what=92s your o= pinion?

 

Best regards,

 

Cristina QIANG

 

From: Flinck, Hannu (Nokia - FI/Espoo) [mailto:hannu.flinck@nokia-bell-labs.com]
Sent: Wednesday, December 20, 2017 10:33 PM
To: qiangli (D) <qiangli3@= huawei.com>; NetSlices@ietf.org
Subject: RE: [Netslices] Open Issue I: SouthBound/Mapping Interface<= /span>

 

Hello Cristina and others,

 

I would suggest that  COMS/ATCN interfac= e mapping would be developed in the TEAS WG since that is an IETF WG, is al= so alluding to slicing topics, has related specifications and the expertise of the transport networks.

 

However, NFVO related work is currently withi= n NVFRG where the slicing work is a minor subset of much larger territory o= f what the RG is discussing.  Therefore, it would be better to do such focused work in COMS when and if it becomes an IETF W= G.

 

 

Best regards

Hannu

 

From: Netslices [mai= lto:netslices-bounces@ietf.org] On Behalf Of qiangli (D)
Sent: Wednesday, December 13, 2017 10:41 AM
To: NetSlices@ietf.o= rg
Subject: [Netslices] Open Issue I: SouthBound/Mapping Interface

 

Hi All,

 

This email is want to collect your opinion on= the following issue:

 

Do we need to standardize the Southbound/Mapp= ing interface of a network slice aware system in COMS? Or do you think this= work should be carried out in existing WGs/RGs? (e.g., mapping interface between COMS and ACTN, mapping interface between = COMS and NFVO)

 

Best regards,

 

Cristina QIANG

 

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X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -4.227 X-Spam-Level: X-Spam-Status: No, score=-4.227 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DC_PNG_UNO_LARGO=0.001, HK_RANDOM_ENVFROM=0.001, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_MED=-2.3, RCVD_IN_MSPIKE_H3=-0.01, RCVD_IN_MSPIKE_WL=-0.01, SPF_PASS=-0.001, T_RP_MATCHES_RCVD=-0.01, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id jdOu6qVXAdU1 for ; Tue, 9 Jan 2018 12:20:48 -0800 (PST) Received: from huawei.com (lhrrgout.huawei.com [194.213.3.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 7F6B21205F0 for ; Tue, 9 Jan 2018 12:20:47 -0800 (PST) Received: from lhreml704-cah.china.huawei.com (unknown [172.18.7.107]) by Forcepoint Email with ESMTP id 6D0AA143F634F; Tue, 9 Jan 2018 20:20:43 +0000 (GMT) Received: from SJCEML703-CHM.china.huawei.com (10.208.112.39) by lhreml704-cah.china.huawei.com (10.201.108.45) with Microsoft SMTP Server (TLS) id 14.3.361.1; Tue, 9 Jan 2018 20:20:44 +0000 Received: from SJCEML521-MBX.china.huawei.com ([169.254.1.83]) by SJCEML703-CHM.china.huawei.com ([169.254.5.204]) with mapi id 14.03.0361.001; Tue, 9 Jan 2018 12:20:36 -0800 From: Leeyoung To: Liang GENG , Daniele Ceccarelli , "qiangli (D)" , "Lei Wang" , NetSlices Thread-Topic: Re: [Netslices] Open Issue I: SouthBound/Mapping Interface Thread-Index: AdNz7BaJGrRkEFbTREOfWwbxCLzW+gRkvjiAAQkhJwAAA63ngAAA7C8AAA6SnyA= Date: Tue, 9 Jan 2018 20:20:35 +0000 Message-ID: <7AEB3D6833318045B4AE71C2C87E8E173CF82B9B@sjceml521-mbx.china.huawei.com> References: <06C389826B926F48A557D5DB5A54C4ED2A5DEDA1@dggemi509-mbs.china.huawei.com>, , <06C389826B926F48A557D5DB5A54C4ED2A5DFC7D@dggemi509-mbs.china.huawei.com> , <06C389826B926F48A557D5DB5A54C4ED2A5E355C@dggemi509-mbs.china.huawei.com> , In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: yes X-MS-TNEF-Correlator: x-originating-ip: [10.218.137.166] Content-Type: multipart/related; boundary="_004_7AEB3D6833318045B4AE71C2C87E8E173CF82B9Bsjceml521mbxchi_"; type="multipart/alternative" MIME-Version: 1.0 X-CFilter-Loop: Reflected Archived-At: Subject: Re: [Netslices] Open Issue I: SouthBound/Mapping Interface X-BeenThere: netslices@ietf.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: "This list is intended for discussion and review of network slicing at IETF." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 09 Jan 2018 20:20:52 -0000 --_004_7AEB3D6833318045B4AE71C2C87E8E173CF82B9Bsjceml521mbxchi_ Content-Type: multipart/alternative; boundary="_000_7AEB3D6833318045B4AE71C2C87E8E173CF82B9Bsjceml521mbxchi_" --_000_7AEB3D6833318045B4AE71C2C87E8E173CF82B9Bsjceml521mbxchi_ Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Hi Liang, As you pointed out there is little difference between service delivery mode= l and service model. Service delivery model can be a subset of service mode= l. In effect, the NBI of COMS system (network orchestrator level) would be muc= h the same as service model. In ACTN, we have defined this interface as CMI= (Cutomer-MDSC interface). There is already an information model (https://d= atatracker.ietf.org/doc/draft-ietf-teas-actn-info-model/) as well as many Y= ANG models on CMI (which corresponds to your NBI) and MPI (which correspond= s to your SBI/Network Configuration model) that have been addressed by ACTN= effort in TEAS. Please see the following draft that maps different models to different inte= rfaces: https://tools.ietf.org/html/draft-ietf-teas-actn-yang-00 In Sectio= n 4.1 and 4.3, we have elaborated numerous functions and its correspond YAN= G models on both CMI and MPI (which is your NBI and SBI). It will be good t= o know what "additional" work COMS will bring to the table beyond what is a= lready covered by this draft. In addition, there has been a new work started that enhances basic TE to SF= -aware TE topology: https://datatracker.ietf.org/doc/draft-bryskin-teas-use= -cases-sf-aware-topo-model/ and https://datatracker.ietf.org/doc/draft-br= yskin-teas-use-cases-sf-aware-topo-model/ This new work covers how topolog= y can support not just TE but SF/NF/VNF based on ETSI GS NFV-MAN 001 V1.1.1= . It might be a reasonable thing to begin with these models and identify what= needs to be augmented to meet the COMS requirements rather than starting a= new model from stretch. Thanks. Young From: Netslices [mailto:netslices-bounces@ietf.org] On Behalf Of Liang GENG Sent: Tuesday, January 09, 2018 11:55 AM To: Daniele Ceccarelli ; qiangli (D) ; Lei Wang ; NetSlices Subject: Re: [Netslices] Open Issue I: SouthBound/Mapping Interface Hi Daniele and all, This graph is a perfect reference. Thanks for this! COMS system is at the same level as "network orchestrator" in this graph. = I believe COMS will need to have a information model(s) as templates of a "= network slice". It should also address NBI service delivery model. For Service Model, I am not sure - how much difference is there as to Servi= ce Delivery Model. Might they be converged to one level in some cases? As to the SBI, a generic network configuration model may be useful while ot= her specific ones may be more feasible to be addressed by different technol= ogy domains respectively according to COMS information model(s). We started from COMS information model - trying to confine the scope of res= ource elements that can be used for network slice. This should provide a ge= neral reference to both NBI and SBI. Best wishes Liang ________________________________ From: Daniele Ceccarelli > Sent: 10 January 2018 01:28:19 To: Liang GENG; qiangli (D); Lei Wang; NetSlices Subject: RE: Re: [Netslices] Open Issue I: SouthBound/Mapping Interface Hi Lei Wang, Cristina, all, i think it is important, first of all, to decide which type of model you wa= nt to address. The drawing from Cristina (from https://datatracker.ietf.org= /doc/draft-ietf-opsawg-service-model-explained/) is an excellent starting= point. In my opinion you should not try to map "more or less" what you have with o= ne of the models below, but on the other side discuss which one you want to= address (e.g. Service Delivery Model) and then proceed on that path. That said, if I correctly understood you don't want to address the models o= n the SBI of the network orchestrator (i.e. Network configuration model or = device model), hence you need to decide if you want to build a service deli= very model or a service model (to start with). BR Daniele [cid:image001.png@01D3894A.2BB7FE20] From: Netslices [mailto:netslices-bounces@ietf.org] On Behalf Of Liang GENG Sent: marted=EC 9 gennaio 2018 16:43 To: qiangli (D) >; Lei Wang= >; NetSlices > Subject: Re: [Netslices] Open Issue I: SouthBound/Mapping Interface Hi Cristina, Hannu and Lei, I would like to think it in this way. Please see if this make sense to you. -It is preferred in COMS NOT to define network configuration model (SBI) fo= r each technology domains. -It may be preferred in COMS to do some sort of categorization based on the= type of resources at the level of information model. This makes it easier = for different domain controllers to define specific network configuration m= odels (SBI of COMS, or "mappings" in previous discussion in this tread ) -It may be preferred in COMS to define a generic network configuration mode= l that is used for SBI with resources directly managed by COMS. What do you think? ________________________________ From: Netslices > on behalf of qiangli (D) > Sent: 04 January 2018 17:11:29 To: Lei Wang; NetSlices Subject: Re: [Netslices] Open Issue I: SouthBound/Mapping Interface Hi Lei Wang, Thank you for your comments. I think an example given by Hannu could be use= d to explain option 3 "Probably what you want is to have a set of reference or example mappings f= or few representative technologies? Such as - A slice over the WAN/transport network for a given technology, - A slice over VNF infrastructure (SFCs and nvo3), - A slice that is a concatenation of the two across different doma= ins (this we know is missing)." Best regards, Cristina QIANG From: Netslices [mailto:netslices-bounces@ietf.org] On Behalf Of Lei Wang Sent: Thursday, January 04, 2018 3:12 PM To: qiangli (D) >; NetSlice= s > Subject: Re: [Netslices] Open Issue I: SouthBound/Mapping Interface Hi Cristina, I agree with the Option 1. Maybe it is not the proper time to do SBI stand= ardization work in COMS now, not matter in terms of opportunity or technolo= gy. About the Option 3, do you mean we can discuss different situations of SBI= according to respenctive technologies in information model that can be del= ivered to multi-domains ( e.g. ACTN, Detnet...) ? Or what you want to say i= s the classification of technology domains? Kind Regards Lei Wang ________________________________ leiw0920@outlook.com From: qiangli (D) Date: 2017-12-21 17:02 To: Flinck, Hannu (Nokia - FI/Espoo); NetSlices@ietf.org Subject: Re: [Netslices] Open Issue I: SouthBound/Mapping Interface Hi Hannu and others, Thank you for your comments. As you and Diego mentioned, the standardizatio= n of southbound interface is a sensitive matter, we'd better avoid infringi= ng other WGs/RGs. To solve this issue, maybe we should figure out "Is it possible to have a u= niform/standard mapping interface to adapt to a variety of implementation t= echnologies?" first. If Pedro is right, such uniform interface does exist, = then it's not a big deal to standardize it IMHO. Otherwise, I think we may = need to consider which option listed below will be better: Option 1: No standardization work on southbound interface, at least before = IETF 101 Option 2: Separately analyze all specific technologies as you have done -- = ACTN [un-checked], NFV [checked], then how about SFC, VPN...? Option 3: Classify technologies (e.g., providing connectivity, provide VNF.= ...) , then discuss for each classification. I personally prefer 1 or 3, what's your opinion? Best regards, Cristina QIANG From: Flinck, Hannu (Nokia - FI/Espoo) [mailto:hannu.flinck@nokia-bell-labs= .com] Sent: Wednesday, December 20, 2017 10:33 PM To: qiangli (D) >; NetSlice= s@ietf.org Subject: RE: [Netslices] Open Issue I: SouthBound/Mapping Interface Hello Cristina and others, I would suggest that COMS/ATCN interface mapping would be developed in the= TEAS WG since that is an IETF WG, is also alluding to slicing topics, has = related specifications and the expertise of the transport networks. However, NFVO related work is currently within NVFRG where the slicing work= is a minor subset of much larger territory of what the RG is discussing. = Therefore, it would be better to do such focused work in COMS when and if i= t becomes an IETF WG. Best regards Hannu From: Netslices [mailto:netslices-bounces@ietf.org] On Behalf Of qiangli (D= ) Sent: Wednesday, December 13, 2017 10:41 AM To: NetSlices@ietf.org Subject: [Netslices] Open Issue I: SouthBound/Mapping Interface Hi All, This email is want to collect your opinion on the following issue: Do we need to standardize the Southbound/Mapping interface of a network sli= ce aware system in COMS? Or do you think this work should be carried out in= existing WGs/RGs? (e.g., mapping interface between COMS and ACTN, mapping = interface between COMS and NFVO) Best regards, Cristina QIANG --_000_7AEB3D6833318045B4AE71C2C87E8E173CF82B9Bsjceml521mbxchi_ Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

Hi Liang,

 

As you pointed out there is little di= fference between service delivery model and service model. Service delivery= model can be a subset of service model.

 

In effect, the NBI of COMS system (ne= twork orchestrator level) would be much the same as service model. In ACTN,= we have defined this interface as CMI (Cutomer-MDSC interface). There is already an information model (https://datatracker.= ietf.org/doc/draft-ietf-teas-actn-info-model/) as well as many YANG mod= els on CMI (which corresponds to your NBI) and MPI (which corresponds to your SBI/Network Configuration model) t= hat have been addressed by ACTN effort in TEAS.

 

Please see the following draft that m= aps different models to different interfaces: https:= //tools.ietf.org/html/draft-ietf-teas-actn-yang-00  In Section 4.1= and 4.3, we have elaborated numerous functions and its correspond YANG mod= els on both CMI and MPI (which is your NBI and SBI). It will be good to know what “additional” wor= k COMS will bring to the table beyond what is already covered by this draft= .

 

In addition, there has been a new wor= k started that enhances basic TE to SF-aware TE topology: https://datatracker.ietf.org/doc/draft-bryskin-teas-use-cases-sf-aware-topo= -model/  and  https://datatracker.ietf.org/doc/draft-bryskin-teas-use-cases-sf-aware-topo= -model/  This new work covers how topology can support not just TE= but SF/NF/VNF based on ETSI GS NFV-MAN 001 V1.1.1. 

 

It might be a reasonable thing to beg= in with these models and identify what needs to be augmented to meet the CO= MS requirements rather than starting a new model from stretch.

 

Thanks.

Young

 

 

 

 

From: Netslices [mailto:netslices-bo= unces@ietf.org] On Behalf Of Liang GENG
Sent: Tuesday, January 09, 2018 11:55 AM
To: Daniele Ceccarelli <daniele.ceccarelli@ericsson.com>; qian= gli (D) <qiangli3@huawei.com>; Lei Wang <leiw0920@outlook.com>;= NetSlices <NetSlices@ietf.org>
Subject: Re: [Netslices] Open Issue I: SouthBound/Mapping Interface<= o:p>

 

H= i Daniele and all,

<= o:p> 

T= his graph is a perfect reference. Thanks for this!

<= o:p> 

C= OMS system is at the same level as  "network orchestrator" i= n this graph. I believe COMS will need to have a information model(s) as te= mplates of a "network slice". It should also address NBI ser= vice delivery model.

<= o:p> 

F= or Service Model, I am not sure - how much difference is there as to Servic= e Delivery Model. Might they be converged to one level in some cases?<= /o:p>

<= o:p> 

A= s to the SBI, a generic network configuration model may be useful while oth= er specific ones may be more feasible to be addressed by different technolo= gy domains respectively according to COMS information model(s).

<= o:p> 

W= e started from COMS information model - trying to confine the scope of= resource elements that can be used for network slice. This should provide = a general reference to both NBI and SBI.

<= o:p> 

B= est wishes

L= iang 

From: Daniel= e Ceccarelli <daniele= .ceccarelli@ericsson.com>
Sent: 10 January 2018 01:28:19
To: Liang GENG; qiangli (D); Lei Wang; NetSlices
Subject: RE: Re: [Netslices] Open Issue I: SouthBound/Mapping Interf= ace

 

Hi Lei Wang, Cristina, all,

 

i think it is important, first of all, to decide w= hich type of model you want to address. The drawing from Cristina (from https://datatracker.ietf.org/doc/draft-ietf-opsawg-service-model-explained/= )   is an excellent starting point.<= o:p>

In my opinion you should not try to map “mor= e or less” what you have with one of the models below, but on the oth= er side discuss which one you want to address (e.g. Service Delivery Model) and then proceed on that path.

That said, if I correctly understood you don’= ;t want to address the models on the SBI of the network orchestrator (i.e. = Network configuration model or device model), hence you need to decide if you want to build a service delivery model or a serv= ice model (to start with).

BR
Daniele

 <= /p>

 

From: Netslices [mailto:netslices-bounces@ietf.org] On Behalf Of Liang GENG
Sent: marted=EC 9 gennaio 2018 16:43
To: qiangli (D) <qiangli3@= huawei.com>; Lei Wang <le= iw0920@outlook.com>; NetSlices <NetSlices@ietf.org>
Subject: Re: [Netslices] Open Issue I: SouthBound/Mapping Interface<= /span>

 

Hi Cristina, Hannu and Lei,<= /span>

 

I would like to think it in this way. Please see if this make se= nse to you.

 

-It is preferred in COMS NOT to define network configuration mod= el (SBI) for each technology domains.

-It may be preferred in COMS to do some sort of categorization b= ased on the type of resources at the level of information model. This makes= it easier for different domain controllers to define specific network configuration models (SBI of COMS, or "mappin= gs" in previous discussion in this tread )

-It may be preferred in COMS to define a generic network configu= ration model that is used for SBI with resources directly managed by COMS.<= /span>

 

What do you think?

 

 

 

From: Netslices <netslices-bounces@ietf.org> on behalf of qiangli (D) <qiangl= i3@huawei.com>
Sent: 04 January 2018 17:11:29
To: Lei Wang; NetSlices
Subject: Re: [Netslices] Open Issue I: SouthBound/Mapping Interface<= /span>

 

Hi Lei Wang,

 

Thank you for your comments. I thin= k an example given by Hannu could be used to explain option 3

 

“Probably what you want is to have a set of= reference or example mappings for few representative technologies? Such as=

 =

-    &nbs= p;     A slice over the WAN/transport netw= ork for a given technology,

-    &nbs= p;     A slice over VNF infrastructure (SF= Cs and nvo3),

-    &nbs= p;     A slice that is a concatenation of = the two across different domains (this we know is missing).”

 =

Best r= egards,

 =

Cristi= na QIANG

 

From: Netslices [mailto:netslices-bounces@ietf.org] On Behalf Of Lei Wang
Sent: Thursday, January 04, 2018 3:12 PM
To: qiangli (D) <qiangli3@= huawei.com>; NetSlices <Net= Slices@ietf.org>
Subject: Re: [Netslices] Open Issue I: SouthBound/Mapping Interface<= /span>

 

Hi Cristina,

 

I agree with the Option 1. Ma= ybe it is not the proper time to do  SBI standardization work in COMS = now, not matter in terms of opportunity or technology.

 

About the Option 3,  do = you mean we can discuss different situations of SBI according to respenctiv= e technologies in information model that can be delivered to multi-domains ( e.g. ACTN, Detnet...) ? Or what you want to say is the = classification of technology domains?

 

 

Kind Regards

 

Lei Wang

 

 

 

From: qiangli (D)

Date: 2017-12-21 17:02

Subject= : Re: [Netslices] Open Issue I: SouthBound/Mappi= ng Interface

Hi Han= nu and  others,

 =

 =

Thank = you for your comments. As you and Diego mentioned, the standardization of s= outhbound interface is a sensitive matter, we’d better avoid infringing other WGs/RGs.=

 =

To sol= ve this issue, maybe we should figure out “Is it possible to have a u= niform/standard mapping interface to adapt to a variety of implementation technologies?” first. If Pedro is right, such unif= orm interface does exist, then it’s not a big deal to standardize it = IMHO. Otherwise, I think we may need to consider which option listed below = will be better:

Option= 1: No standardization work on southbound interface, at least before IETF 1= 01

Option= 2: Separately analyze all specific technologies as you have done -- ACTN [= un-checked], NFV [checked], then how about SFC, VPN…?

Option= 3: Classify technologies (e.g., providing connectivity, provide VNF…= .) , then discuss for each classification.

 =

I pers= onally prefer 1 or 3, what’s your opinion?

 =

Best r= egards,

 =

Cristi= na QIANG

 =

From:= Flinck, Hannu (Nokia - FI/Espoo) [mailto:hannu.flinck@nokia-bell-labs.com= ]
Sent: Wednesday, December 20, 2017 10:33 PM
To: qiangli (D) <qiangli3@= huawei.com>; NetSlices@ietf.org
Subject: RE: [Netslices] Open Issue I: SouthBound/Mapping Interface<= /span>

 

Hello Cr= istina and others,

 

I would = suggest that  COMS/ATCN interface mapping would be developed in the TE= AS WG since that is an IETF WG, is also alluding to slicing topics, has related specifications and the expertise of the transport netw= orks.

 

However,= NFVO related work is currently within NVFRG where the slicing work is a mi= nor subset of much larger territory of what the RG is discussing.  Therefore, it would be better to do such focused w= ork in COMS when and if it becomes an IETF WG.

 

 

Best reg= ards

Hannu

 

From:= Netslices [m= ailto:netslices-bounces@ietf.org] On Behalf Of qiangli (D)
Sent: Wednesday, December 13, 2017 10:41 AM
To: NetSlices@ietf.org
Subject: [Netslices] Open Issue I: SouthBound/Mapping Interface

 

Hi All,<= /span>

 

This ema= il is want to collect your opinion on the following issue:

 

Do we ne= ed to standardize the Southbound/Mapping interface of a network slice aware= system in COMS? Or do you think this work should be carried out in existing WGs/RGs? (e.g., mapping interface between COMS = and ACTN, mapping interface between COMS and NFVO)=

 

Best reg= ards,

 

Cristina= QIANG

 

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(version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Tue, 9 Jan 2018 21:29:12 GMT Reply-To: From: "Adrian Farrel" To: "'Liang GENG'" , "'Daniele Ceccarelli'" , "'qiangli \(D\)'" , "'Lei Wang'" , "'NetSlices'" References: <06C389826B926F48A557D5DB5A54C4ED2A5DEDA1@dggemi509-mbs.china.huawei.com>, , <06C389826B926F48A557D5DB5A54C4ED2A5DFC7D@dggemi509-mbs.china.huawei.com> , <06C389826B926F48A557D5DB5A54C4ED2A5E355C@dggemi509-mbs.china.huawei.com> , In-Reply-To: Date: Tue, 9 Jan 2018 21:29:10 -0000 Message-ID: <046a01d38990$e487d740$ad9785c0$@olddog.co.uk> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit X-Mailer: Microsoft Outlook 14.0 Thread-Index: AQDwdGu0CPPGrwxFNkuTrnghLeq8jwGnyTZfAh0fVMUBWZbqsQL+ZyloAn2ThEACN357NAKKjCtvpLdMNVA= Content-Language: en-gb X-TM-AS-MML: disable X-TM-AS-Product-Ver: IMSS-7.1.0.1679-8.2.0.1013-23586.003 X-TM-AS-Result: No--3.246-10.0-31-10 X-imss-scan-details: No--3.246-10.0-31-10 X-TMASE-MatchedRID: D55/w/UrhMuPvrMjLFD6eKCekFLiZBsp2aYdnwn7qHeabNoYojBQdqWe cuVfuJfE9vMnKBfXwFaPWx38Q1qIm1L+KwgRcYO/SEQN/D/3cG6owiOYoQ3GE+iL9VJe4uH0T7P JEIC73WKjWurNKl88Z4HcR7DmhbZ7c4AxKqEGoHoAKzYLecaUGPxA8T/7fLlhIFBEE5CFomIcAJ RwO9xbINJKRyQnwzba8++UFwQCI4X7JUoX2bCTJN/wYmMFcJSIE3NxsGztrMt+YesuCgkiXD5O4 ZLE23T4gyupT+f5Rj+NAsNktNf+COIPatyEA1M9qeBupNgLgYfomXBvaBu6Tn1ZAf3L+lJdsQj6 RBpGuWbPsO2DaZRvr2pb6bierF88lwV2iaAfSWc5f9Xw/xqKXcidYBYDjITpzGQlN1FzKCgqtq5 d3cxkNTyrn6In8RJa7UaaGPHMy3f9dAnj0eEFtJZ+sB1YzMuzVAkMUx2rCBcxHZjEVEJk3fncIe L08SGyQTlTAr1PXSB9niDo++xAD0sg8wx0aw/dr3LE7lHo4NKJkNr6rpsABVVB/ObyHMK5Zzbwn cYrg9dDDKa3G4nrLQ== Archived-At: Subject: Re: [Netslices] Open Issue I: SouthBound/Mapping Interface X-BeenThere: netslices@ietf.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: "This list is intended for discussion and review of network slicing at IETF." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 09 Jan 2018 21:29:24 -0000 Sorry to jump in as a lurker, but co-author of draft-ietf-opsawg-service-model-explained that is about to be published as RFC 8309 I needed to comment. Liang said: > For Service Model, I am not sure - how much difference is there as to Service Delivery Model. Might they be converged to one level in some cases? You may converge components. For example, you could decide to build one component that provides the function of Service Orchestrator and Network Orchestrator. This a functional architecture, and no one is obliged to implement it as drawn. When you converge components, the external interface between those components is no longer visible and so (of course?) does not need to be implemented. You *could* continue to use the interface internal to your implementation but you might replace it with a function call, or not have it at all. It's a private implementation issue. BUT, the conflation of Service Model and Service Delivery Model is, in general, an unwise thing to do. Of course, it may depend on the nature of the service being discussed. Some services could be so very, very simple that the two models are nested as Young suggests: "Service delivery model can be a subset of service model". For example, the customer details might be left out of the Service Delivery Model, and the service expectations in the Service Model might be narrowed down to explicit requirements present in the Service Delivery Model. But for other services, it is quite likely that the Service Delivery Model contains more detail and specifics based on knowledge of the capabilities of the underlying network (without specifying the device configuration). I think you would be wise to keep the distinction in terminology, and if it is valuable, you can inherit or share common YANG definitions. Cheers, Adrian PS Cristina's figure shows "information model" in two places. In my opinion, an information model exists only on paper. It may be used to inform the design of a data model (for use on an external interface). And some implementations might choose to construct their internal data structures to follow the information model (or at least make sure that all of the information is present), but this is an implementation option- in practice (with a functional architecture, you can explain what the interfaces look like, but you do not need to (should not!) attempt to specify how the inside of one of your boxes behaves. From nobody Tue Jan 9 20:51:50 2018 Return-Path: X-Original-To: netslices@ietfa.amsl.com Delivered-To: netslices@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id B6735124BAC for ; Tue, 9 Jan 2018 20:51:49 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -4.231 X-Spam-Level: X-Spam-Status: No, score=-4.231 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, RCVD_IN_MSPIKE_H3=-0.01, RCVD_IN_MSPIKE_WL=-0.01, SPF_PASS=-0.001, T_RP_MATCHES_RCVD=-0.01] autolearn=ham autolearn_force=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id alB93LK2JVAq for ; Tue, 9 Jan 2018 20:51:47 -0800 (PST) Received: from huawei.com (lhrrgout.huawei.com [194.213.3.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 4D2CA126CE8 for ; Tue, 9 Jan 2018 20:51:47 -0800 (PST) Received: from lhreml706-cah.china.huawei.com (unknown [172.18.7.107]) by Forcepoint Email with ESMTP id 1D8F6432F58BE; Wed, 10 Jan 2018 04:51:43 +0000 (GMT) Received: from DGGEMI406-HUB.china.huawei.com (10.3.17.144) by lhreml706-cah.china.huawei.com (10.201.108.47) with Microsoft SMTP Server (TLS) id 14.3.361.1; Wed, 10 Jan 2018 04:51:44 +0000 Received: from DGGEMI509-MBS.china.huawei.com ([169.254.2.152]) by dggemi406-hub.china.huawei.com ([10.3.17.144]) with mapi id 14.03.0361.001; Wed, 10 Jan 2018 12:51:39 +0800 From: "qiangli (D)" To: "adrian@olddog.co.uk" , 'Liang GENG' , 'Daniele Ceccarelli' , 'Lei Wang' , 'NetSlices' Thread-Topic: [Netslices] Open Issue I: SouthBound/Mapping Interface Thread-Index: AQHTiZDsWAu2VjBjDUSxTKCG9rom3KNsdSLQ Date: Wed, 10 Jan 2018 04:51:38 +0000 Message-ID: <06C389826B926F48A557D5DB5A54C4ED2A5E7113@dggemi509-mbs.china.huawei.com> References: <06C389826B926F48A557D5DB5A54C4ED2A5DEDA1@dggemi509-mbs.china.huawei.com>, , <06C389826B926F48A557D5DB5A54C4ED2A5DFC7D@dggemi509-mbs.china.huawei.com> , <06C389826B926F48A557D5DB5A54C4ED2A5E355C@dggemi509-mbs.china.huawei.com> , <046a01d38990$e487d740$ad9785c0$@olddog.co.uk> In-Reply-To: <046a01d38990$e487d740$ad9785c0$@olddog.co.uk> Accept-Language: zh-CN, en-US Content-Language: zh-CN X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.130.163.138] Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-CFilter-Loop: Reflected Archived-At: Subject: Re: [Netslices] Open Issue I: SouthBound/Mapping Interface X-BeenThere: netslices@ietf.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: "This list is intended for discussion and review of network slicing at IETF." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 10 Jan 2018 04:51:50 -0000 Hi Adrian, Thanks a lot for your explanation, it's very useful to us.=20 As you suggested, we regard the information model as an internal data struc= ture which could be used to describe what a network slice looks like, of co= urse also could be used to inform the design of data models on external int= erfaces. And what we really want to do is the resource-centric common manag= ement plane of network slices, include OAM, data models of interfaces, etc.= =20 Speaking of data models, I have some confusions about the NBI of Network Or= chestrator and the Service (delivery) model. I understand their relation as= during the ns requirement initialization phase, NBI data model and service= (delivery) model are the same/similar thing. NBI data models has broader m= eaning in other phases, such as capacity exposure, monitored result report,= etc. I am not sure if my understanding is correct or not. Best regards, Cristina QIANG -----Original Message----- From: Adrian Farrel [mailto:adrian@olddog.co.uk]=20 Sent: Wednesday, January 10, 2018 5:29 AM To: 'Liang GENG' ; 'Daniele Ceccarelli' ; qiangli (D) ; 'Lei Wang' ; 'NetSlices' Subject: RE: [Netslices] Open Issue I: SouthBound/Mapping Interface Sorry to jump in as a lurker, but co-author of draft-ietf-opsawg-service-mo= del-explained that is about to be published as RFC 8309 I needed to comment. Liang said: > For Service Model, I am not sure - how much difference is there as to=20 > Servic Delivery Model. Might they be converged to one level in some cases? You may converge components. For example, you could decide to build one com= ponent that provides the function of Service Orchestrator and Network Orche= strator. This a functional architecture, and no one is obliged to implement= it as drawn. When you converge components, the external interface between those componen= ts is no longer visible and so (of course?) does not need to be implemented= . You *could* continue to use the interface internal to your implementation but y= ou might replace it with a function call, or not have it at all. It's a pri= vate implementation issue. BUT, the conflation of Service Model and Service Delivery Model is, in gene= ral, an unwise thing to do. Of course, it may depend on the nature of the s= ervice being discussed. Some services could be so very, very simple that th= e two models are nested as Young suggests: "Service delivery model can be a= subset of service model". For example, the customer details might be left = out of the Service Delivery Model, and the service expectations in the Serv= ice Model might be narrowed down to explicit requirements present in the Se= rvice Delivery Model. But for other services, it is quite likely that the Service Delivery Model = contains more detail and specifics based on knowledge of the capabilities o= f the underlying network (without specifying the device configuration). I think you would be wise to keep the distinction in terminology, and if it= is valuable, you can inherit or share common YANG definitions. Cheers, Adrian PS Cristina's figure shows "information model" in two places. In my opinion= , an information model exists only on paper. It may be used to inform the d= esign of a data model (for use on an external interface). And some implemen= tations might choose to construct their internal data structures to follow = the information model (or at least make sure that all of the information is= present), but this is an implementation option- in practice (with a functi= onal architecture, you can explain what the interfaces look like, but you d= o not need to (should not!) attempt to specify how the inside of one of you= r boxes behaves. From nobody Sat Jan 27 09:51:16 2018 Return-Path: X-Original-To: netslices@ietfa.amsl.com Delivered-To: netslices@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 0EF62120727 for ; Sat, 27 Jan 2018 09:51:15 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2.698 X-Spam-Level: X-Spam-Status: No, score=-2.698 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, FREEMAIL_FROM=0.001, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_LOW=-0.7, SPF_PASS=-0.001, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=gmail.com Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 3f1tN0oej7RO for ; Sat, 27 Jan 2018 09:51:12 -0800 (PST) Received: from mail-qk0-x231.google.com (mail-qk0-x231.google.com [IPv6:2607:f8b0:400d:c09::231]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 31880124217 for ; Sat, 27 Jan 2018 09:51:12 -0800 (PST) Received: by mail-qk0-x231.google.com with SMTP id b76so915469qkc.1 for ; Sat, 27 Jan 2018 09:51:12 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:from:date:message-id:subject:to; bh=MW7XkZTr1tOBQncurn09h+TdPFXVkF8gLTQjV9VqXC4=; b=RTeb/bbxFv3lfLlcMhsovbsPG8LQ53Q/TycBn0zebwXSK2lF2G3jdfb6IS/LuS8fD2 lYqYhtiQ7NhHPtnjJ33vuCiOH38dKcCFyRz34nSi43vHZwHnHhTqixQh6zSenBshWZL0 hmq/ireGmIOo6W4Qt6mv4oV3hlQDuOxudUmJph6rOiPOpNVrmpwoRHU3a2wIxJRyytMc C9jgkdy2FqZhU+us57RPC8CXRIJmD10tAh9MT5uXpfFTBeuQngU4tPJUgObFyu5Rgi5R npwUoX2h2bWeZaCDxBm8buD4Nf6ZWkK+5mMw0DAac04nWKwlwBE65PZae3Zt6NsDa7O+ MNhA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:from:date:message-id:subject:to; bh=MW7XkZTr1tOBQncurn09h+TdPFXVkF8gLTQjV9VqXC4=; b=QLoxebAn2erhqKr/Kx6bAspkaRCCLY3w3Gm5JnJ3oMt6+gfEB4X4VK3HmLU8mkMlFM 3U/P3gUR2iqQEt+nHCL2gbcqR/hPt0/fENAIDtOSeUb7jbgxQvxJOdLZgtAhMDnQb4wE eEKbWvsb6nf6cFdx4lev5WdRLkJbOdXtR//SmHoBdmKAV9IAL+m6SY8lCcjIuF9q032o YpXswuQ6JlWC+NjYyUcnEXYURALXt21E4o0tdkgPViI/3P/D5+v1ElOSTxJAwqxD8ZZp cfYA+qz89b+NOQlAR+DxtWhK0MfgcWx8j9hCVNJ/1DrQ9LWVnJ/K4UQMYdmz3z6t6vuE 9YnQ== X-Gm-Message-State: AKwxyteX1XEm1cgbMvkOyJOQdGMAZp+BSD+X9RQEPNYBBMSqTCswoRhb 7omzvIR/aFuIhqRyguFE/XOOpnoGpA2+lWLSKUNclg== X-Google-Smtp-Source: AH8x2261LIu5EH/0W5pJLPHUe+S0NVE19CGYDJGuc32E1wSUXDwxg5NMCIWA7lKuu07RTXam3CDIGC1M1JUAYaiYJvc= X-Received: by 10.55.222.19 with SMTP id h19mr27318179qkj.0.1517075470962; Sat, 27 Jan 2018 09:51:10 -0800 (PST) MIME-Version: 1.0 Received: by 10.237.60.194 with HTTP; Sat, 27 Jan 2018 09:51:10 -0800 (PST) From: Xavier de Foy Date: Sat, 27 Jan 2018 12:51:10 -0500 Message-ID: To: NetSlices@ietf.org Content-Type: multipart/alternative; boundary="089e082d8c3c8b561a0563c5a8f9" Archived-At: Subject: [Netslices] Preliminary charter text for discussion X-BeenThere: netslices@ietf.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: "This list is intended for discussion and review of network slicing at IETF." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 27 Jan 2018 17:51:15 -0000 --089e082d8c3c8b561a0563c5a8f9 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Hi all, a group of COMS proponents prepared a preliminary charter text, taking into account recommendations collected when discussing the BoF request for IETF 100 . The recommendations were for: 1. better account of the 4 key elements used in COMS: connectivity, compute, storage resources + network & service functions; 2. better description of the functional blocks and their positions in COMS; 3. better FCAPS coverage; 4. better coverage of the management of the data plane. Please share your comments on this list by Feb 1st. Other COMS proponents are also invited to provide additional information to help with the discussion. Best Regards, Xavier, on behalf of COMS proponents. I. Context The Common Operations and Management on Network Slices (COMS) WG standardizes slice-level operations and management of the resources associated with a network slice. These resources include both network infrastructures and service functions. More specifically, network infrastructures are normally comprised of physical/logical connections in access, aggregation and backbone networks as well as computing and storage elements. Meantime, service functions include network functions and network function chains which are pre-defined using corresponding network infrastructure elements. Such resources may be parts of different domains enabled by different technologies. A "Network Slice" is realized using a collection of technologies spanning across data, control and management planes. Many of them rely on existing IETF technologies including both concluded and in-progress works such as: - Data plane: DetNet, TE-Tunnels, MPLS, Segment Routing VPNs, NVO3 etc. - Controller and/or control plane: ACTN, PCE and RSVP-TE (requiring LDP, BGP, OSPF awareness at level below) etc. - Management plane: YANG, OAM etc. The foundation of COMS is a technology-independent and resource-centric management plane. In reality, the network slice provider may have diverse technology choices in different domains due to geographical and commercial reasons. Therefore, COMS makes no assumption on which technology is used for specific domains. The goal of COMS is to define a common and inter-operative management mechanism, which is essential for the concept of network slicing being adopted in a system with heterogeneous network infrastructures and services functions. Major characteristics include: - Enabling composition of slices within a single or over multiple domains. - Allowing the operation and management of a network slice in a uniform manner, even when this network slice span multiple technology and/or administrative domains. - Enabling deployment of services over individual slices. II. Scope The WG will describe an overall architecture for network slicing. To manage network slices in a technology-independent manner, the network slice provider (NSP) will need to communicate with a network slice orchestrator (NSO) over a COMS Service Delivery Interface (SDI). The COMS SDI can also be used between network slice orchestrators, enabling hierarchical management through the notion of network slice subnets. Network slices will be leased to tenants, which will be able to use Customer Service Interface (CSI) exposed by the NS provider to run management tasks (e.g., on-demand measurement) within their slice instance under certain policies. The WG will describe an information model representing a network slice, accounting for the key elements used in network slices: connectivity, compute, storage resources, network and service functions =E2=80=94 this information model includes the representation of managed objects and corresponding management and operations, will guide the design of data models on SDI and CSI and also will enable orchestrators interworking. The WG will specify requirements, operations and management functionalities on network slicing interfaces SDI and/or CSI including: 1 Network slice service profile, e.g. set by NSP over SDI, including high-level parameters for network infrastructures and service functions, together with their corresponding performance requirements. 2 Lifecycle management of network slice. 3 Other FCAPS functions. An important task of NSP is to aggregate faults, performance, status information and performance guarantees for certain services. 4 Slice composition or stitching in multi-domain environment. 5 Slice management by the tenant under the control of NSP, including deploying network services over a slice. The WG will specify requirements and functionalities of data plane entities as needed to enable the management of network slices. For example, this may include abstractions of policy control and enforcement, or gateway functionalities. The WG will also study the mapping between the abstract information model and managed entities, and will liaise with other IETF WGs as needed. However, the WG will not attempt to replicate data plane technologies including DetNet, TE-Tunnels, MPLS, Segment Routing VPNs, NVO3 etc. III. Deliverables WG deliverables are listed below and may be split in any number of documents as determined by the WG: - Problem statement and use cases for management of network slices. - Architecture of network slices. - Information model(s) and operations for network slices on topics described above in the scope section. - SDI and CSI interface specifications and relevant YANG models. - Study the mappings of technology independent network equipment configurations derived from the information model towards specific technologies and coordination with relevant WGs as needed. IV. Milestones Dec 2018 Problem Statement, use cases and architecture Dec 2018 Common information model and related YANG model June 2019 Network slices composition and interworking October 2019 FCAPS management functions and operations on network slices including abstractions of policy control and enforcement, or gateway functionalities. March 2020 SDI and CSI interface specifications and relevant YANG models --089e082d8c3c8b561a0563c5a8f9 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Hi all, a group of COMS proponents prepared a preliminary = charter text, taking into account recommendations collected when discussing= the BoF request for IETF 100.

The recommendations= were for:
1. better account of the 4 key elements used in COMS: connec= tivity, compute, storage resources + network & service functions;
2= . better description of the functional blocks and their positions in COMS; =
3. better FCAPS coverage;
4. better coverage of the management of t= he data plane.

Please share your comments on this list by Feb 1st. = Other COMS proponents are also invited to provide additional information to= help with the discussion.

Best Regards,
Xavier, on behalf of COM= S proponents.


I. Context

The Common Operations and Manage= ment on Network Slices (COMS) WG standardizes slice-level operations and ma= nagement of the resources associated with a network slice. These resources = include both network infrastructures and service functions. More specifical= ly, network infrastructures are normally comprised of physical/logical conn= ections in access, aggregation and backbone networks as well as computing a= nd storage elements. Meantime, service functions include network functions = and network function chains which are pre-defined using corresponding netwo= rk infrastructure elements. Such resources may be parts of different domain= s enabled by different technologies.

A "Network Slice" is = realized using a collection of technologies spanning across data, control a= nd management planes. Many of them rely on existing IETF technologies inclu= ding both concluded and in-progress works such as:
- Data plane: DetNet,= TE-Tunnels, MPLS, Segment Routing VPNs, NVO3 etc.
- Controller and/or c= ontrol plane: ACTN, PCE and RSVP-TE (requiring LDP, BGP, OSPF awareness at = level below) etc.
- Management plane: YANG, OAM etc.

The foundati= on of COMS is a technology-independent and resource-centric management plan= e. In reality, the network slice provider may have diverse technology choic= es in different domains due to geographical and commercial reasons. Therefo= re, COMS makes no assumption on which technology is used for specific domai= ns. The goal of COMS is to define a common and inter-operative management m= echanism, which is essential for the concept of network slicing being adopt= ed in a system with heterogeneous network infrastructures and services func= tions. Major characteristics include:
- Enabling composition of slices w= ithin a single or over multiple domains.
- Allowing the operation and ma= nagement of a network slice in a uniform manner, even when this network sli= ce span multiple technology and/or administrative domains.
- Enabling de= ployment of services over individual slices.

II. Scope

The WG= will describe an overall architecture for network slicing. To manage netwo= rk slices in a technology-independent manner, the network slice provider (N= SP) will need to communicate with a network slice orchestrator (NSO) over a= COMS Service Delivery Interface (SDI). The COMS SDI can also be used betwe= en network slice orchestrators, enabling hierarchical management through th= e notion of network slice subnets. Network slices will be leased to tenants= , which will be able to use Customer Service Interface (CSI) exposed by the= NS provider to run management tasks (e.g., on-demand measurement) within t= heir slice instance under certain policies.

The WG will describe an = information model representing a network slice, accounting for the key elem= ents used in network slices: connectivity, compute, storage resources, netw= ork and service functions =E2=80=94 this information model includes the rep= resentation of managed objects and corresponding management and operations,= will guide the design of data models on SDI and CSI and also will enable o= rchestrators interworking.

The WG will specify requirements, operati= ons and management functionalities on network slicing interfaces SDI and/or= CSI including:
1 Network slice service profile, e.g. set by NSP over SD= I, including high-level parameters for network infrastructures and service = functions, together with their corresponding performance requirements.
2= Lifecycle management of network slice.
3 Other FCAPS functions. An impo= rtant task of NSP is to aggregate faults, performance, status information a= nd performance guarantees for certain services.
4 Slice composition or s= titching in multi-domain environment.
5 Slice management by the tenant u= nder the control of NSP, including deploying network services over a slice.=

The WG will specify requirements and functionalities of data plane = entities as needed to enable the management of network slices. For example,= this may include abstractions of policy control and enforcement, or gatewa= y functionalities. The WG will also study the mapping between the abstract = information model and managed entities, and will liaise with other IETF WGs= as needed. However, the WG will not attempt to replicate data plane techno= logies including DetNet, TE-Tunnels, MPLS, Segment Routing VPNs, NVO3 etc.<= br>
III. Deliverables

WG deliverables are listed below and may be= split in any number of documents as determined by the WG:
- Problem sta= tement and use cases for management of network slices.
- Architecture of= network slices.
- Information model(s) and operations for network slice= s on topics described above in the scope section.
- SDI and CSI interfac= e specifications and relevant YANG models.
- Study the mappings of techn= ology independent network equipment configurations derived from the informa= tion model towards specific technologies and coordination with relevant WGs= as needed.

IV. Milestones

Dec 2018=C2=A0=C2=A0=C2=A0=C2=A0 P= roblem Statement, use cases and architecture
Dec 2018=C2=A0=C2=A0=C2=A0= =C2=A0 Common information model and related YANG model
June 2019=C2=A0= =C2=A0=C2=A0 Network slices composition and interworking
October 2019 FC= APS management functions and operations on network
=C2=A0=C2=A0=C2=A0= =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 slices including abs= tractions of policy control and
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2= =A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 enforcement, or gateway functionalities.<= br>March 2020=C2=A0=C2=A0 SDI and CSI interface specifications and relevant= YANG models

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List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 27 Jan 2018 22:23:30 -0000 --Apple-Mail=_BBB96859-C929-4469-879D-3DEE4E9E2B6F Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=utf-8 Hi All Re: Common Operations and Management on Network Slices (COMS) BoF In addition to the comments to the preliminary COMS netslices charter = you are kindly requested to enlist as proponents of the BoF in case that = you are interested in supporting this BoF and /or contributing / = participating in the future work. As such please provide by 1st February 2018 your name, affiliation and = an email address for inclusion in the list of COMS NetSlicing BoF = proponents on the 2nd February BoF request to IETF. Thank you in advance Best Regards Alex > On 27 Jan 2018, at 17:51, Xavier de Foy = wrote: >=20 > Hi all, a group of COMS proponents prepared a preliminary charter = text, taking into account recommendations collected when discussing the = BoF request for IETF 100 = . >=20 > The recommendations were for:=20 > 1. better account of the 4 key elements used in COMS: connectivity, = compute, storage resources + network & service functions;=20 > 2. better description of the functional blocks and their positions in = COMS;=20 > 3. better FCAPS coverage;=20 > 4. better coverage of the management of the data plane.=20 >=20 > Please share your comments on this list by Feb 1st. Other COMS = proponents are also invited to provide additional information to help = with the discussion. >=20 > Best Regards, > Xavier, on behalf of COMS proponents. >=20 >=20 > I. Context >=20 > The Common Operations and Management on Network Slices (COMS) WG = standardizes slice-level operations and management of the resources = associated with a network slice. These resources include both network = infrastructures and service functions. More specifically, network = infrastructures are normally comprised of physical/logical connections = in access, aggregation and backbone networks as well as computing and = storage elements. Meantime, service functions include network functions = and network function chains which are pre-defined using corresponding = network infrastructure elements. Such resources may be parts of = different domains enabled by different technologies. >=20 > A "Network Slice" is realized using a collection of technologies = spanning across data, control and management planes. Many of them rely = on existing IETF technologies including both concluded and in-progress = works such as: > - Data plane: DetNet, TE-Tunnels, MPLS, Segment Routing VPNs, NVO3 = etc. > - Controller and/or control plane: ACTN, PCE and RSVP-TE (requiring = LDP, BGP, OSPF awareness at level below) etc. > - Management plane: YANG, OAM etc. >=20 > The foundation of COMS is a technology-independent and = resource-centric management plane. In reality, the network slice = provider may have diverse technology choices in different domains due to = geographical and commercial reasons. Therefore, COMS makes no assumption = on which technology is used for specific domains. The goal of COMS is to = define a common and inter-operative management mechanism, which is = essential for the concept of network slicing being adopted in a system = with heterogeneous network infrastructures and services functions. Major = characteristics include: > - Enabling composition of slices within a single or over multiple = domains. > - Allowing the operation and management of a network slice in a = uniform manner, even when this network slice span multiple technology = and/or administrative domains. > - Enabling deployment of services over individual slices. >=20 > II. Scope >=20 > The WG will describe an overall architecture for network slicing. To = manage network slices in a technology-independent manner, the network = slice provider (NSP) will need to communicate with a network slice = orchestrator (NSO) over a COMS Service Delivery Interface (SDI). The = COMS SDI can also be used between network slice orchestrators, enabling = hierarchical management through the notion of network slice subnets. = Network slices will be leased to tenants, which will be able to use = Customer Service Interface (CSI) exposed by the NS provider to run = management tasks (e.g., on-demand measurement) within their slice = instance under certain policies. >=20 > The WG will describe an information model representing a network = slice, accounting for the key elements used in network slices: = connectivity, compute, storage resources, network and service functions = =E2=80=94 this information model includes the representation of managed = objects and corresponding management and operations, will guide the = design of data models on SDI and CSI and also will enable orchestrators = interworking. >=20 > The WG will specify requirements, operations and management = functionalities on network slicing interfaces SDI and/or CSI including: > 1 Network slice service profile, e.g. set by NSP over SDI, including = high-level parameters for network infrastructures and service functions, = together with their corresponding performance requirements. > 2 Lifecycle management of network slice. > 3 Other FCAPS functions. An important task of NSP is to aggregate = faults, performance, status information and performance guarantees for = certain services. > 4 Slice composition or stitching in multi-domain environment. > 5 Slice management by the tenant under the control of NSP, including = deploying network services over a slice. >=20 > The WG will specify requirements and functionalities of data plane = entities as needed to enable the management of network slices. For = example, this may include abstractions of policy control and = enforcement, or gateway functionalities. The WG will also study the = mapping between the abstract information model and managed entities, and = will liaise with other IETF WGs as needed. However, the WG will not = attempt to replicate data plane technologies including DetNet, = TE-Tunnels, MPLS, Segment Routing VPNs, NVO3 etc. >=20 > III. Deliverables >=20 > WG deliverables are listed below and may be split in any number of = documents as determined by the WG: > - Problem statement and use cases for management of network slices. > - Architecture of network slices. > - Information model(s) and operations for network slices on topics = described above in the scope section. > - SDI and CSI interface specifications and relevant YANG models. > - Study the mappings of technology independent network equipment = configurations derived from the information model towards specific = technologies and coordination with relevant WGs as needed. >=20 > IV. Milestones >=20 > Dec 2018 Problem Statement, use cases and architecture > Dec 2018 Common information model and related YANG model > June 2019 Network slices composition and interworking > October 2019 FCAPS management functions and operations on network=20 > slices including abstractions of policy control and=20 > enforcement, or gateway functionalities. > March 2020 SDI and CSI interface specifications and relevant YANG = models >=20 > _______________________________________________ > Netslices mailing list > Netslices@ietf.org > https://www.ietf.org/mailman/listinfo/netslices --Apple-Mail=_BBB96859-C929-4469-879D-3DEE4E9E2B6F Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=utf-8 Hi = All

Re: Common = Operations and Management on Network Slices (COMS) BoF

In addition to the = comments to the preliminary COMS netslices charter you are kindly = requested to enlist as proponents of the BoF in case that you are = interested in supporting this BoF and /or contributing / participating = in the future work.

As such please provide by 1st February 2018 your name, = affiliation and an email address for inclusion in the list of COMS = NetSlicing BoF proponents on the 2nd February BoF request to = IETF.

Thank = you in advance
Best Regards
Alex

On 27 Jan 2018, at 17:51, = Xavier de Foy <x.defoy.ietf@gmail.com> wrote:

Hi all, a group of COMS = proponents prepared a preliminary charter text, taking into account = recommendations collected when discussing the BoF request for IETF 100.

The recommendations were for:
1. better = account of the 4 key elements used in COMS: connectivity, compute, = storage resources + network & service functions;
2. = better description of the functional blocks and their positions in COMS; =
3. better FCAPS coverage;
4. better = coverage of the management of the data plane.

Please share your comments on this list by Feb 1st. Other = COMS proponents are also invited to provide additional information to = help with the discussion.

Best Regards,
Xavier, on behalf of COMS proponents.


I. Context

The = Common Operations and Management on Network Slices (COMS) WG = standardizes slice-level operations and management of the resources = associated with a network slice. These resources include both network = infrastructures and service functions. More specifically, network = infrastructures are normally comprised of physical/logical connections = in access, aggregation and backbone networks as well as computing and = storage elements. Meantime, service functions include network functions = and network function chains which are pre-defined using corresponding = network infrastructure elements. Such resources may be parts of = different domains enabled by different technologies.

A "Network Slice" is realized using a collection of = technologies spanning across data, control and management planes. Many = of them rely on existing IETF technologies including both concluded and = in-progress works such as:
- Data plane: DetNet, = TE-Tunnels, MPLS, Segment Routing VPNs, NVO3 etc.
- = Controller and/or control plane: ACTN, PCE and RSVP-TE (requiring LDP, = BGP, OSPF awareness at level below) etc.
- Management = plane: YANG, OAM etc.

The foundation of = COMS is a technology-independent and resource-centric management plane. = In reality, the network slice provider may have diverse technology = choices in different domains due to geographical and commercial reasons. = Therefore, COMS makes no assumption on which technology is used for = specific domains. The goal of COMS is to define a common and = inter-operative management mechanism, which is essential for the concept = of network slicing being adopted in a system with heterogeneous network = infrastructures and services functions. Major characteristics = include:
- Enabling composition of slices within a single = or over multiple domains.
- Allowing the operation and = management of a network slice in a uniform manner, even when this = network slice span multiple technology and/or administrative domains.
- Enabling deployment of services over individual slices.

II. Scope

The WG = will describe an overall architecture for network slicing. To manage = network slices in a technology-independent manner, the network slice = provider (NSP) will need to communicate with a network slice = orchestrator (NSO) over a COMS Service Delivery Interface (SDI). The = COMS SDI can also be used between network slice orchestrators, enabling = hierarchical management through the notion of network slice subnets. = Network slices will be leased to tenants, which will be able to use = Customer Service Interface (CSI) exposed by the NS provider to run = management tasks (e.g., on-demand measurement) within their slice = instance under certain policies.

The WG = will describe an information model representing a network slice, = accounting for the key elements used in network slices: connectivity, = compute, storage resources, network and service functions =E2=80=94 this = information model includes the representation of managed objects and = corresponding management and operations, will guide the design of data = models on SDI and CSI and also will enable orchestrators = interworking.

The WG will specify = requirements, operations and management functionalities on network = slicing interfaces SDI and/or CSI including:
1 Network = slice service profile, e.g. set by NSP over SDI, including high-level = parameters for network infrastructures and service functions, together = with their corresponding performance requirements.
2 = Lifecycle management of network slice.
3 Other FCAPS = functions. An important task of NSP is to aggregate faults, performance, = status information and performance guarantees for certain services.
4 Slice composition or stitching in multi-domain = environment.
5 Slice management by the tenant under the = control of NSP, including deploying network services over a slice.

The WG will specify requirements and = functionalities of data plane entities as needed to enable the = management of network slices. For example, this may include abstractions = of policy control and enforcement, or gateway functionalities. The WG = will also study the mapping between the abstract information model and = managed entities, and will liaise with other IETF WGs as needed. = However, the WG will not attempt to replicate data plane technologies = including DetNet, TE-Tunnels, MPLS, Segment Routing VPNs, NVO3 etc.

III. Deliverables

WG deliverables are listed below and may be split in any = number of documents as determined by the WG:
- Problem = statement and use cases for management of network slices.
- = Architecture of network slices.
- Information model(s) and = operations for network slices on topics described above in the scope = section.
- SDI and CSI interface specifications and = relevant YANG models.
- Study the mappings of technology = independent network equipment configurations derived from the = information model towards specific technologies and coordination with = relevant WGs as needed.

IV. Milestones

Dec 2018     Problem = Statement, use cases and architecture
Dec = 2018     Common information model and related YANG = model
June 2019    Network slices = composition and interworking
October 2019 FCAPS management = functions and operations on network
          &nb= sp;  slices including abstractions of policy control and
          &nb= sp;  enforcement, or gateway functionalities.
March = 2020   SDI and CSI interface specifications and relevant YANG = models

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

= --Apple-Mail=_BBB96859-C929-4469-879D-3DEE4E9E2B6F-- From nobody Sun Jan 28 10:22:14 2018 Return-Path: X-Original-To: netslices@ietfa.amsl.com Delivered-To: netslices@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id C9B0212E873 for ; Sun, 28 Jan 2018 10:22:12 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.901 X-Spam-Level: X-Spam-Status: No, score=-1.901 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_PASS=-0.001] autolearn=ham autolearn_force=no Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=it-uc3m-es.20150623.gappssmtp.com Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id A6dGkPWRm6pK for ; Sun, 28 Jan 2018 10:22:10 -0800 (PST) Received: from mail-wr0-x233.google.com (mail-wr0-x233.google.com [IPv6:2a00:1450:400c:c0c::233]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 8162412EB32 for ; Sun, 28 Jan 2018 10:22:09 -0800 (PST) Received: by mail-wr0-x233.google.com with SMTP id f6so3180695wra.6 for ; Sun, 28 Jan 2018 10:22:09 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=it-uc3m-es.20150623.gappssmtp.com; s=20150623; h=message-id:subject:from:reply-to:to:date:in-reply-to:references :organization:mime-version:content-transfer-encoding; bh=lVpg3qosnwhqW4C1DS59dYUBoetTkbTiF7bMkeay3Tg=; b=SpeOhFhD+cZwvJmzgA9eurbyXmoX1alnkeuokCFIaoSPY0dhz/tw3vFuZfJsr40F0e 7aW05q+4iQ/BwgbPnevh2R4EtRQYDiptz1E7dR33igkw0meP4tV+mmcPs02qW8z1Hud+ OBaG/3jTRU7SDFx1f+UcEI52qXg7lOMIGxCf6XXt4OFkfOQu9YsDoDKZT/UFXrB80SyH PeBJQrQ56IxeQpZoWspnJmerEiPkB/AhvlsBDCNOCGVxvqA9+FHUk9uYKXpeQXCfCg47 ppG4ynOYRnS5bqFzukPhoXw5/QEz80jPta+wHPzgQ4QooiC8bMsJcLSBpShosZeaB3Q2 Qqaw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:message-id:subject:from:reply-to:to:date :in-reply-to:references:organization:mime-version :content-transfer-encoding; bh=lVpg3qosnwhqW4C1DS59dYUBoetTkbTiF7bMkeay3Tg=; b=JwdZEOo3KUJ9ctMhtJGkqa9q9tZwqd6EMeZ/aj2HtDNbv9Y45cPm7pwFuDK5Diw4H8 y4aQNPqisKXo2PoXPbewA7z/v7V3Plfk9sKQhxjfjv7FlBsqdH8gTZN7b/vrxbFKsz3i gar21hdG4JCuFaWuwSZIzI2HKjdAh/J6nSBcRbw3TkrINPlqM8xzeWLfNWtlprtZXBdX Lp+CLqMZv3ooa1cc5vnynyps/5n54Jkr/YXzjeCehNEQNMM02apyTVd9uI40cZiMn8fd v9iDSuTR9GjIsejqqZgnarPxeYe8SGD5xu464kEVmpNmOmjFBIfaxCpkfE7AqtkeTvXv FDQQ== X-Gm-Message-State: AKwxytdCqgmRwiFTZVTrExlu15VPsMuHt57h+XycpwPOMPhEnYLOPb0N +SfBFllnT7rS2aNpPiUtZagLYhGF X-Google-Smtp-Source: AH8x227J6tfxS7RFuGQQgesdXhgwk+B6SZb98HENUL4XTnaTLUjiYFO6VYi1giDo7gFlpRxloRtOqQ== X-Received: by 10.223.172.174 with SMTP id o43mr16939258wrc.121.1517163727835; Sun, 28 Jan 2018 10:22:07 -0800 (PST) Received: from cjbc_dell.lan (2.154.161.159.dyn.user.ono.com. [2.154.161.159]) by smtp.gmail.com with ESMTPSA id r64sm7034482wma.15.2018.01.28.10.22.06 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Sun, 28 Jan 2018 10:22:07 -0800 (PST) Message-ID: <1517163726.4051.23.camel@it.uc3m.es> From: Carlos =?ISO-8859-1?Q?Jes=FAs?= Bernardos Cano Reply-To: cjbc@it.uc3m.es To: Xavier de Foy , NetSlices@ietf.org Date: Sun, 28 Jan 2018 19:22:06 +0100 In-Reply-To: References: Organization: Universidad Carlos III de Madrid Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.26.3-1 Mime-Version: 1.0 Content-Transfer-Encoding: 8bit Archived-At: Subject: Re: [Netslices] Preliminary charter text for discussion X-BeenThere: netslices@ietf.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: "This list is intended for discussion and review of network slicing at IETF." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 28 Jan 2018 18:22:13 -0000 Hi Xavier, One quick comment (apologies for being inactive, and for maybe asking about something you have already discussed) from a first read: I think the Conext part should start with a 2-line definition of network slice. This should provide the context of is understood as network slice by the COMS WG. Thanks, Carlos On Sat, 2018-01-27 at 12:51 -0500, Xavier de Foy wrote: > Hi all, a group of COMS proponents prepared a preliminary charter > text, taking into account recommendations collected when discussing > the BoF request for IETF 100. > > The recommendations were for: > 1. better account of the 4 key elements used in COMS: connectivity, > compute, storage resources + network & service functions; > 2. better description of the functional blocks and their positions in > COMS; > 3. better FCAPS coverage; > 4. better coverage of the management of the data plane. > > Please share your comments on this list by Feb 1st. Other COMS > proponents are also invited to provide additional information to help > with the discussion. > > Best Regards, > Xavier, on behalf of COMS proponents. > > > I. Context > > The Common Operations and Management on Network Slices (COMS) WG > standardizes slice-level operations and management of the resources > associated with a network slice. These resources include both network > infrastructures and service functions. More specifically, network > infrastructures are normally comprised of physical/logical > connections in access, aggregation and backbone networks as well as > computing and storage elements. Meantime, service functions include > network functions and network function chains which are pre-defined > using corresponding network infrastructure elements. Such resources > may be parts of different domains enabled by different technologies. > > A "Network Slice" is realized using a collection of technologies > spanning across data, control and management planes. Many of them > rely on existing IETF technologies including both concluded and in- > progress works such as: > - Data plane: DetNet, TE-Tunnels, MPLS, Segment Routing VPNs, NVO3 > etc. > - Controller and/or control plane: ACTN, PCE and RSVP-TE (requiring > LDP, BGP, OSPF awareness at level below) etc. > - Management plane: YANG, OAM etc. > > The foundation of COMS is a technology-independent and resource- > centric management plane. In reality, the network slice provider may > have diverse technology choices in different domains due to > geographical and commercial reasons. Therefore, COMS makes no > assumption on which technology is used for specific domains. The goal > of COMS is to define a common and inter-operative management > mechanism, which is essential for the concept of network slicing > being adopted in a system with heterogeneous network infrastructures > and services functions. Major characteristics include: > - Enabling composition of slices within a single or over multiple > domains. > - Allowing the operation and management of a network slice in a > uniform manner, even when this network slice span multiple technology > and/or administrative domains. > - Enabling deployment of services over individual slices. > > II. Scope > > The WG will describe an overall architecture for network slicing. To > manage network slices in a technology-independent manner, the network > slice provider (NSP) will need to communicate with a network slice > orchestrator (NSO) over a COMS Service Delivery Interface (SDI). The > COMS SDI can also be used between network slice orchestrators, > enabling hierarchical management through the notion of network slice > subnets. Network slices will be leased to tenants, which will be able > to use Customer Service Interface (CSI) exposed by the NS provider to > run management tasks (e.g., on-demand measurement) within their slice > instance under certain policies. > > The WG will describe an information model representing a network > slice, accounting for the key elements used in network slices: > connectivity, compute, storage resources, network and service > functions — this information model includes the representation of > managed objects and corresponding management and operations, will > guide the design of data models on SDI and CSI and also will enable > orchestrators interworking. > > The WG will specify requirements, operations and management > functionalities on network slicing interfaces SDI and/or CSI > including: > 1 Network slice service profile, e.g. set by NSP over SDI, including > high-level parameters for network infrastructures and service > functions, together with their corresponding performance > requirements. > 2 Lifecycle management of network slice. > 3 Other FCAPS functions. An important task of NSP is to aggregate > faults, performance, status information and performance guarantees > for certain services. > 4 Slice composition or stitching in multi-domain environment. > 5 Slice management by the tenant under the control of NSP, including > deploying network services over a slice. > > The WG will specify requirements and functionalities of data plane > entities as needed to enable the management of network slices. For > example, this may include abstractions of policy control and > enforcement, or gateway functionalities. The WG will also study the > mapping between the abstract information model and managed entities, > and will liaise with other IETF WGs as needed. However, the WG will > not attempt to replicate data plane technologies including DetNet, > TE-Tunnels, MPLS, Segment Routing VPNs, NVO3 etc. > > III. Deliverables > > WG deliverables are listed below and may be split in any number of > documents as determined by the WG: > - Problem statement and use cases for management of network slices. > - Architecture of network slices. > - Information model(s) and operations for network slices on topics > described above in the scope section. > - SDI and CSI interface specifications and relevant YANG models. > - Study the mappings of technology independent network equipment > configurations derived from the information model towards specific > technologies and coordination with relevant WGs as needed. > > IV. Milestones > > Dec 2018 Problem Statement, use cases and architecture > Dec 2018 Common information model and related YANG model > June 2019 Network slices composition and interworking > October 2019 FCAPS management functions and operations on network > slices including abstractions of policy control and > enforcement, or gateway functionalities. > March 2020 SDI and CSI interface specifications and relevant YANG > models > > _______________________________________________ > Netslices mailing list > Netslices@ietf.org > https://www.ietf.org/mailman/listinfo/netslices From nobody Mon Jan 29 10:50:31 2018 Return-Path: X-Original-To: netslices@ietfa.amsl.com Delivered-To: netslices@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 767D3126B6D for ; Mon, 29 Jan 2018 10:50:29 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.998 X-Spam-Level: X-Spam-Status: No, score=-1.998 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, FREEMAIL_FROM=0.001, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=gmail.com Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id ukp3__MNWaaj for ; Mon, 29 Jan 2018 10:50:26 -0800 (PST) Received: from mail-qt0-x229.google.com (mail-qt0-x229.google.com [IPv6:2607:f8b0:400d:c0d::229]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id D7E7C124E15 for ; Mon, 29 Jan 2018 10:50:25 -0800 (PST) Received: by mail-qt0-x229.google.com with SMTP id z11so14046045qtm.3 for ; Mon, 29 Jan 2018 10:50:25 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :cc; bh=Gl9UueCcmonDGOR0t/+C9ho81zaJBUblipIoK3aWHqY=; b=BCBbvCx6sJqa81tLbu/gb0/2/L6JP1Wv+hIYFrFui5TEcPS3mW77Vnv84XW2GEBoYh NBkSc883Vxe73rcCEjaynDxqloV1arobxqN5jB8WQH8quV0/Q9dqFKfkEUKAJaMmPJbf 7uT4LiYG7Dv88nh+g5qXYcW/s9ew3zEqFdacmZFVNrcGU86Xz9a69ZfdAr+hCNt1dQGI pWQ/uygV8EX58knCgZN93a8GkGE3qB/E89cXsL3VXRxvPHW8CJpDg6NLsd5jy9N2G0Oc gfLK4ZXS/ELJzLKWKknN3d+v0b/Wc28qgr2I0sJQzmp5Px7ANS8U28DECIlvNpzz3YPw oDMA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:in-reply-to:references:from:date :message-id:subject:to:cc; bh=Gl9UueCcmonDGOR0t/+C9ho81zaJBUblipIoK3aWHqY=; b=VkkaLdZPDxjtG2jc8M7nO7GRjW8vPogYz4UdEA6B4rxmR72tbStqtKpyFVa+zGnWab RKOCWGS6Doxb+efY05l3F+MSBLoTLgw2CJGOvQc+qj/qTW8sRbUrXcqPyWq2cZ9NB5lT MbLrhyWIFOLDrKbKjrTNYI58YnCJ+402DTVNeQNgbptlYpDPGdkMssKFzKQgnKKXOLks OL5ITWdRoUiRfkAVBDPtO97M0qEEjnbmiymvRbj62W8YB4K44Rr4rdHpohy8czst0Yik /yrZMHZ3bxKCvSAlcnWBSv8U86Kq+ZIEhj7zEctN/4A/HJJpokDUrwqtg4r3lqBlBvy7 957w== X-Gm-Message-State: AKwxytf68fsDCVNcuBGz9RpIQ/YnJLZz0h2fd4513jn6gyqaSBel2QTW iSfqs/tNQ5Gpk0/ufJdeOKlvZiG/c/kBY5RvdBqv/A== X-Google-Smtp-Source: AH8x226QUQFZ5YmV6MK8+ZNg3K/G4IYRkPGUytzVDyPR16JYsB1pk5S7beiPRakK6+Yeo5utMkQ5bgnJchSYKyD0ies= X-Received: by 10.200.6.208 with SMTP id j16mr38390302qth.166.1517251825015; Mon, 29 Jan 2018 10:50:25 -0800 (PST) MIME-Version: 1.0 Received: by 10.237.60.194 with HTTP; Mon, 29 Jan 2018 10:50:24 -0800 (PST) In-Reply-To: <1517163726.4051.23.camel@it.uc3m.es> References: <1517163726.4051.23.camel@it.uc3m.es> From: Xavier de Foy Date: Mon, 29 Jan 2018 13:50:24 -0500 Message-ID: To: =?UTF-8?Q?Carlos_Jes=C3=BAs_Bernardos_Cano?= Cc: NetSlices@ietf.org Content-Type: multipart/alternative; boundary="f403043b2ae4109edf0563eeb859" Archived-At: Subject: Re: [Netslices] Preliminary charter text for discussion X-BeenThere: netslices@ietf.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: "This list is intended for discussion and review of network slicing at IETF." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 29 Jan 2018 18:50:29 -0000 --f403043b2ae4109edf0563eeb859 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Thanks Carlos, do you think rewording the first paragraph like this helps? (Re-using text from other proponents) A network slice is a combination of infrastructure resources and service functions constructed according to customized requirements. Such a network slice may cross multiple domains using different infrastructure technologies. The goal of this group is to produce a technology-independent and resource-centric management plane for network slices. Infrastructure resources associated with a network slice are normally comprised of physical/logical connections in access, aggregation and backbone networks as well as computing and storage elements. Service functions associated with a network slice include network functions and network function chains pre-defined using corresponding network infrastructure elements. Regards, Xavier. On Sun, Jan 28, 2018 at 1:22 PM, Carlos Jes=C3=BAs Bernardos Cano < cjbc@it.uc3m.es> wrote: > Hi Xavier, > > One quick comment (apologies for being inactive, and for maybe asking > about something you have already discussed) from a first read: > > I think the Conext part should start with a 2-line definition of > network slice. This should provide the context of is understood as > network slice by the COMS WG. > > Thanks, > > Carlos > > On Sat, 2018-01-27 at 12:51 -0500, Xavier de Foy wrote: > > Hi all, a group of COMS proponents prepared a preliminary charter > > text, taking into account recommendations collected when discussing > > the BoF request for IETF 100. > > > > The recommendations were for: > > 1. better account of the 4 key elements used in COMS: connectivity, > > compute, storage resources + network & service functions; > > 2. better description of the functional blocks and their positions in > > COMS; > > 3. better FCAPS coverage; > > 4. better coverage of the management of the data plane. > > > > Please share your comments on this list by Feb 1st. Other COMS > > proponents are also invited to provide additional information to help > > with the discussion. > > > > Best Regards, > > Xavier, on behalf of COMS proponents. > > > > > > I. Context > > > > The Common Operations and Management on Network Slices (COMS) WG > > standardizes slice-level operations and management of the resources > > associated with a network slice. These resources include both network > > infrastructures and service functions. More specifically, network > > infrastructures are normally comprised of physical/logical > > connections in access, aggregation and backbone networks as well as > > computing and storage elements. Meantime, service functions include > > network functions and network function chains which are pre-defined > > using corresponding network infrastructure elements. Such resources > > may be parts of different domains enabled by different technologies. > > > > A "Network Slice" is realized using a collection of technologies > > spanning across data, control and management planes. Many of them > > rely on existing IETF technologies including both concluded and in- > > progress works such as: > > - Data plane: DetNet, TE-Tunnels, MPLS, Segment Routing VPNs, NVO3 > > etc. > > - Controller and/or control plane: ACTN, PCE and RSVP-TE (requiring > > LDP, BGP, OSPF awareness at level below) etc. > > - Management plane: YANG, OAM etc. > > > > The foundation of COMS is a technology-independent and resource- > > centric management plane. In reality, the network slice provider may > > have diverse technology choices in different domains due to > > geographical and commercial reasons. Therefore, COMS makes no > > assumption on which technology is used for specific domains. The goal > > of COMS is to define a common and inter-operative management > > mechanism, which is essential for the concept of network slicing > > being adopted in a system with heterogeneous network infrastructures > > and services functions. Major characteristics include: > > - Enabling composition of slices within a single or over multiple > > domains. > > - Allowing the operation and management of a network slice in a > > uniform manner, even when this network slice span multiple technology > > and/or administrative domains. > > - Enabling deployment of services over individual slices. > > > > II. Scope > > > > The WG will describe an overall architecture for network slicing. To > > manage network slices in a technology-independent manner, the network > > slice provider (NSP) will need to communicate with a network slice > > orchestrator (NSO) over a COMS Service Delivery Interface (SDI). The > > COMS SDI can also be used between network slice orchestrators, > > enabling hierarchical management through the notion of network slice > > subnets. Network slices will be leased to tenants, which will be able > > to use Customer Service Interface (CSI) exposed by the NS provider to > > run management tasks (e.g., on-demand measurement) within their slice > > instance under certain policies. > > > > The WG will describe an information model representing a network > > slice, accounting for the key elements used in network slices: > > connectivity, compute, storage resources, network and service > > functions =E2=80=94 this information model includes the representation = of > > managed objects and corresponding management and operations, will > > guide the design of data models on SDI and CSI and also will enable > > orchestrators interworking. > > > > The WG will specify requirements, operations and management > > functionalities on network slicing interfaces SDI and/or CSI > > including: > > 1 Network slice service profile, e.g. set by NSP over SDI, including > > high-level parameters for network infrastructures and service > > functions, together with their corresponding performance > > requirements. > > 2 Lifecycle management of network slice. > > 3 Other FCAPS functions. An important task of NSP is to aggregate > > faults, performance, status information and performance guarantees > > for certain services. > > 4 Slice composition or stitching in multi-domain environment. > > 5 Slice management by the tenant under the control of NSP, including > > deploying network services over a slice. > > > > The WG will specify requirements and functionalities of data plane > > entities as needed to enable the management of network slices. For > > example, this may include abstractions of policy control and > > enforcement, or gateway functionalities. The WG will also study the > > mapping between the abstract information model and managed entities, > > and will liaise with other IETF WGs as needed. However, the WG will > > not attempt to replicate data plane technologies including DetNet, > > TE-Tunnels, MPLS, Segment Routing VPNs, NVO3 etc. > > > > III. Deliverables > > > > WG deliverables are listed below and may be split in any number of > > documents as determined by the WG: > > - Problem statement and use cases for management of network slices. > > - Architecture of network slices. > > - Information model(s) and operations for network slices on topics > > described above in the scope section. > > - SDI and CSI interface specifications and relevant YANG models. > > - Study the mappings of technology independent network equipment > > configurations derived from the information model towards specific > > technologies and coordination with relevant WGs as needed. > > > > IV. Milestones > > > > Dec 2018 Problem Statement, use cases and architecture > > Dec 2018 Common information model and related YANG model > > June 2019 Network slices composition and interworking > > October 2019 FCAPS management functions and operations on network > > slices including abstractions of policy control and > > enforcement, or gateway functionalities. > > March 2020 SDI and CSI interface specifications and relevant YANG > > models > > > > _______________________________________________ > > Netslices mailing list > > Netslices@ietf.org > > https://www.ietf.org/mailman/listinfo/netslices > --f403043b2ae4109edf0563eeb859 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Thanks Carlos, do you think rewording the first paragraph = like this helps? (Re-using text from other proponents)

A network slice is a combination of infrastructure resources and service functions constructed according to customized requirements. Such a=20 network slice may cross multiple domains using different infrastructure=20 technologies. The goal of this group is to produce a=20 technology-independent and resource-centric management plane for network slices. Infrastructure resources associated with a network slice are=20 normally comprised of physical/logical connections in access,=20 aggregation and backbone networks as well as computing and storage=20 elements. Service functions associated with a network slice include=20 network functions and network function chains pre-defined using=20 corresponding network infrastructure elements.

Regards= ,
Xavier.

On Sun, Jan 28, 2018 at 1:22 PM, Carl= os Jes=C3=BAs Bernardos Cano <cjbc@it.uc3m.es> wrote:
Hi Xavier,

One quick comment (apologies for being inactive, and for maybe asking
about something you have already discussed) from a first read:

I think the Conext part should start with a 2-line definition of
network slice. This should provide the context of is understood as
network slice by the COMS WG.

Thanks,

Carlos

On Sat, 2018-01-27 at 12:51 -0500, Xavier de Foy wrote:
> Hi all, a group of COMS proponents prepared a preliminary charter
> text, taking into account recommendations collected when discussing > the BoF request for IETF 100.
>
> The recommendations were for:
> 1. better account of the 4 key elements used in COMS: connectivity, > compute, storage resources + network & service functions;
> 2. better description of the functional blocks and their positions in<= br> > COMS;
> 3. better FCAPS coverage;
> 4. better coverage of the management of the data plane.
>
> Please share your comments on this list by Feb 1st. Other COMS
> proponents are also invited to provide additional information to help<= br> > with the discussion.
>
> Best Regards,
> Xavier, on behalf of COMS proponents.
>
>
> I. Context
>
> The Common Operations and Management on Network Slices (COMS) WG
> standardizes slice-level operations and management of the resources > associated with a network slice. These resources include both network<= br> > infrastructures and service functions. More specifically, network
> infrastructures are normally comprised of physical/logical
> connections in access, aggregation and backbone networks as well as > computing and storage elements. Meantime, service functions include > network functions and network function chains which are pre-defined > using corresponding network infrastructure elements. Such resources > may be parts of different domains enabled by different technologies. >
> A "Network Slice" is realized using a collection of technolo= gies
> spanning across data, control and management planes. Many of them
> rely on existing IETF technologies including both concluded and in- > progress works such as:
> - Data plane: DetNet, TE-Tunnels, MPLS, Segment Routing VPNs, NVO3
> etc.
> - Controller and/or control plane: ACTN, PCE and RSVP-TE (requiring > LDP, BGP, OSPF awareness at level below) etc.
> - Management plane: YANG, OAM etc.
>
> The foundation of COMS is a technology-independent and resource-
> centric management plane. In reality, the network slice provider may > have diverse technology choices in different domains due to
> geographical and commercial reasons. Therefore, COMS makes no
> assumption on which technology is used for specific domains. The goal<= br> > of COMS is to define a common and inter-operative management
> mechanism, which is essential for the concept of network slicing
> being adopted in a system with heterogeneous network infrastructures > and services functions. Major characteristics include:
> - Enabling composition of slices within a single or over multiple
> domains.
> - Allowing the operation and management of a network slice in a
> uniform manner, even when this network slice span multiple technology<= br> > and/or administrative domains.
> - Enabling deployment of services over individual slices.
>
> II. Scope
>
> The WG will describe an overall architecture for network slicing. To > manage network slices in a technology-independent manner, the network<= br> > slice provider (NSP) will need to communicate with a network slice
> orchestrator (NSO) over a COMS Service Delivery Interface (SDI). The > COMS SDI can also be used between network slice orchestrators,
> enabling hierarchical management through the notion of network slice > subnets. Network slices will be leased to tenants, which will be able<= br> > to use Customer Service Interface (CSI) exposed by the NS provider to<= br> > run management tasks (e.g., on-demand measurement) within their slice<= br> > instance under certain policies.
>
> The WG will describe an information model representing a network
> slice, accounting for the key elements used in network slices:
> connectivity, compute, storage resources, network and service
> functions =E2=80=94 this information model includes the representation= of
> managed objects and corresponding management and operations, will
> guide the design of data models on SDI and CSI and also will enable > orchestrators interworking.
>
> The WG will specify requirements, operations and management
> functionalities on network slicing interfaces SDI and/or CSI
> including:
> 1 Network slice service profile, e.g. set by NSP over SDI, including > high-level parameters for network infrastructures and service
> functions, together with their corresponding performance
> requirements.
> 2 Lifecycle management of network slice.
> 3 Other FCAPS functions. An important task of NSP is to aggregate
> faults, performance, status information and performance guarantees
> for certain services.
> 4 Slice composition or stitching in multi-domain environment.
> 5 Slice management by the tenant under the control of NSP, including > deploying network services over a slice.
>
> The WG will specify requirements and functionalities of data plane
> entities as needed to enable the management of network slices. For
> example, this may include abstractions of policy control and
> enforcement, or gateway functionalities. The WG will also study the > mapping between the abstract information model and managed entities, > and will liaise with other IETF WGs as needed. However, the WG will > not attempt to replicate data plane technologies including DetNet,
> TE-Tunnels, MPLS, Segment Routing VPNs, NVO3 etc.
>
> III. Deliverables
>
> WG deliverables are listed below and may be split in any number of
> documents as determined by the WG:
> - Problem statement and use cases for management of network slices. > - Architecture of network slices.
> - Information model(s) and operations for network slices on topics
> described above in the scope section.
> - SDI and CSI interface specifications and relevant YANG models.
> - Study the mappings of technology independent network equipment
> configurations derived from the information model towards specific
> technologies and coordination with relevant WGs as needed.
>
> IV. Milestones
>
> Dec 2018=C2=A0 =C2=A0 =C2=A0Problem Statement, use cases and architect= ure
> Dec 2018=C2=A0 =C2=A0 =C2=A0Common information model and related YANG = model
> June 2019=C2=A0 =C2=A0 Network slices composition and interworking
> October 2019 FCAPS management functions and operations on network
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 slices including abstr= actions of policy control and
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 enforcement, or gatewa= y functionalities.
> March 2020=C2=A0 =C2=A0SDI and CSI interface specifications and releva= nt YANG
> models
>
> _______________________________________________
> Netslices mailing list
> Netslices@ietf.org
> https://www.ietf.org/mailman/listinfo/netsl= ices

--f403043b2ae4109edf0563eeb859-- From nobody Mon Jan 29 20:34:02 2018 Return-Path: X-Original-To: netslices@ietfa.amsl.com Delivered-To: netslices@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 6ADC5131583 for ; Mon, 29 Jan 2018 20:34:00 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -4.21 X-Spam-Level: X-Spam-Status: No, score=-4.21 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, SPF_PASS=-0.001, T_RP_MATCHES_RCVD=-0.01, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id tc_PqUS27HxM for ; Mon, 29 Jan 2018 20:33:56 -0800 (PST) Received: from ns1.nict.go.jp (ns1.nict.go.jp [IPv6:2001:df0:232:300::1]) by ietfa.amsl.com (Postfix) with ESMTP id B55E9131580 for ; Mon, 29 Jan 2018 20:33:54 -0800 (PST) Received: from gw1.nict.go.jp (gw1.nict.go.jp [133.243.18.250]) by ns1.nict.go.jp with ESMTP id w0U4Xpud008925; Tue, 30 Jan 2018 13:33:51 +0900 (JST) Received: from mail2.nict.go.jp (mail2.nict.go.jp [133.243.18.15]) by gw1.nict.go.jp with ESMTP id w0U4Xps5008921; Tue, 30 Jan 2018 13:33:51 +0900 (JST) Received: from spectre (unknown [133.243.115.114]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail2.nict.go.jp (NICT Mail Spool Server2) with ESMTPS id 8C212E30C; Tue, 30 Jan 2018 13:33:51 +0900 (JST) Date: Tue, 30 Jan 2018 13:33:52 +0900 From: Pedro Martinez-Julia To: Xavier de Foy Cc: Carlos =?utf-8?B?SmVzw7pz?= Bernardos Cano , NetSlices@ietf.org Message-ID: <20180130043352.GB15400@spectre> References: <1517163726.4051.23.camel@it.uc3m.es> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: User-Agent: Mutt/1.9.3 (2018-01-21) X-Virus-Scanned: clamav-milter 0.99.2 at zenith1 X-Virus-Status: Clean Archived-At: Subject: Re: [Netslices] Preliminary charter text for discussion X-BeenThere: netslices@ietf.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: "This list is intended for discussion and review of network slicing at IETF." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 30 Jan 2018 04:34:00 -0000 Dear Xavier et al., I have rephrased the charter to make it more concise and clear: A network slice is a set of related infrastructure resources and service functions with qualities that respond to specific requirements, being able to cross multiple domains and use heterogeneous technologies. The goal of this group is to produce and promote a technology-independent and resource-centric management plane for network slices. Resources associated with a network slice are normally comprised of physical and logical connections in access, aggregation and backbone networks as well as computing and storage elements. Service functions associated with a network slice include network functions and network function chains pre-defined using corresponding network infrastructure elements. Please consider using this text or part of it. Thank you very much. Regards, Pedro On Mon, Jan 29, 2018 at 01:50:24PM -0500, Xavier de Foy wrote: > Thanks Carlos, do you think rewording the first paragraph like this helps? > (Re-using text from other proponents) > > A network slice is a combination of infrastructure resources and service > functions constructed according to customized requirements. Such a network > slice may cross multiple domains using different infrastructure > technologies. The goal of this group is to produce a technology-independent > and resource-centric management plane for network slices. Infrastructure > resources associated with a network slice are normally comprised of > physical/logical connections in access, aggregation and backbone networks > as well as computing and storage elements. Service functions associated > with a network slice include network functions and network function chains > pre-defined using corresponding network infrastructure elements. > > Regards, > Xavier. > > On Sun, Jan 28, 2018 at 1:22 PM, Carlos Jesús Bernardos Cano < > cjbc@it.uc3m.es> wrote: > > > Hi Xavier, > > > > One quick comment (apologies for being inactive, and for maybe asking > > about something you have already discussed) from a first read: > > > > I think the Conext part should start with a 2-line definition of > > network slice. This should provide the context of is understood as > > network slice by the COMS WG. > > > > Thanks, > > > > Carlos > > > > On Sat, 2018-01-27 at 12:51 -0500, Xavier de Foy wrote: > > > Hi all, a group of COMS proponents prepared a preliminary charter > > > text, taking into account recommendations collected when discussing > > > the BoF request for IETF 100. > > > > > > The recommendations were for: > > > 1. better account of the 4 key elements used in COMS: connectivity, > > > compute, storage resources + network & service functions; > > > 2. better description of the functional blocks and their positions in > > > COMS; > > > 3. better FCAPS coverage; > > > 4. better coverage of the management of the data plane. > > > > > > Please share your comments on this list by Feb 1st. Other COMS > > > proponents are also invited to provide additional information to help > > > with the discussion. > > > > > > Best Regards, > > > Xavier, on behalf of COMS proponents. > > > > > > > > > I. Context > > > > > > The Common Operations and Management on Network Slices (COMS) WG > > > standardizes slice-level operations and management of the resources > > > associated with a network slice. These resources include both network > > > infrastructures and service functions. More specifically, network > > > infrastructures are normally comprised of physical/logical > > > connections in access, aggregation and backbone networks as well as > > > computing and storage elements. Meantime, service functions include > > > network functions and network function chains which are pre-defined > > > using corresponding network infrastructure elements. Such resources > > > may be parts of different domains enabled by different technologies. > > > > > > A "Network Slice" is realized using a collection of technologies > > > spanning across data, control and management planes. Many of them > > > rely on existing IETF technologies including both concluded and in- > > > progress works such as: > > > - Data plane: DetNet, TE-Tunnels, MPLS, Segment Routing VPNs, NVO3 > > > etc. > > > - Controller and/or control plane: ACTN, PCE and RSVP-TE (requiring > > > LDP, BGP, OSPF awareness at level below) etc. > > > - Management plane: YANG, OAM etc. > > > > > > The foundation of COMS is a technology-independent and resource- > > > centric management plane. In reality, the network slice provider may > > > have diverse technology choices in different domains due to > > > geographical and commercial reasons. Therefore, COMS makes no > > > assumption on which technology is used for specific domains. The goal > > > of COMS is to define a common and inter-operative management > > > mechanism, which is essential for the concept of network slicing > > > being adopted in a system with heterogeneous network infrastructures > > > and services functions. Major characteristics include: > > > - Enabling composition of slices within a single or over multiple > > > domains. > > > - Allowing the operation and management of a network slice in a > > > uniform manner, even when this network slice span multiple technology > > > and/or administrative domains. > > > - Enabling deployment of services over individual slices. > > > > > > II. Scope > > > > > > The WG will describe an overall architecture for network slicing. To > > > manage network slices in a technology-independent manner, the network > > > slice provider (NSP) will need to communicate with a network slice > > > orchestrator (NSO) over a COMS Service Delivery Interface (SDI). The > > > COMS SDI can also be used between network slice orchestrators, > > > enabling hierarchical management through the notion of network slice > > > subnets. Network slices will be leased to tenants, which will be able > > > to use Customer Service Interface (CSI) exposed by the NS provider to > > > run management tasks (e.g., on-demand measurement) within their slice > > > instance under certain policies. > > > > > > The WG will describe an information model representing a network > > > slice, accounting for the key elements used in network slices: > > > connectivity, compute, storage resources, network and service > > > functions — this information model includes the representation of > > > managed objects and corresponding management and operations, will > > > guide the design of data models on SDI and CSI and also will enable > > > orchestrators interworking. > > > > > > The WG will specify requirements, operations and management > > > functionalities on network slicing interfaces SDI and/or CSI > > > including: > > > 1 Network slice service profile, e.g. set by NSP over SDI, including > > > high-level parameters for network infrastructures and service > > > functions, together with their corresponding performance > > > requirements. > > > 2 Lifecycle management of network slice. > > > 3 Other FCAPS functions. An important task of NSP is to aggregate > > > faults, performance, status information and performance guarantees > > > for certain services. > > > 4 Slice composition or stitching in multi-domain environment. > > > 5 Slice management by the tenant under the control of NSP, including > > > deploying network services over a slice. > > > > > > The WG will specify requirements and functionalities of data plane > > > entities as needed to enable the management of network slices. For > > > example, this may include abstractions of policy control and > > > enforcement, or gateway functionalities. The WG will also study the > > > mapping between the abstract information model and managed entities, > > > and will liaise with other IETF WGs as needed. However, the WG will > > > not attempt to replicate data plane technologies including DetNet, > > > TE-Tunnels, MPLS, Segment Routing VPNs, NVO3 etc. > > > > > > III. Deliverables > > > > > > WG deliverables are listed below and may be split in any number of > > > documents as determined by the WG: > > > - Problem statement and use cases for management of network slices. > > > - Architecture of network slices. > > > - Information model(s) and operations for network slices on topics > > > described above in the scope section. > > > - SDI and CSI interface specifications and relevant YANG models. > > > - Study the mappings of technology independent network equipment > > > configurations derived from the information model towards specific > > > technologies and coordination with relevant WGs as needed. > > > > > > IV. Milestones > > > > > > Dec 2018 Problem Statement, use cases and architecture > > > Dec 2018 Common information model and related YANG model > > > June 2019 Network slices composition and interworking > > > October 2019 FCAPS management functions and operations on network > > > slices including abstractions of policy control and > > > enforcement, or gateway functionalities. > > > March 2020 SDI and CSI interface specifications and relevant YANG > > > models > > > > > > _______________________________________________ > > > 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 -- 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 *** From nobody Tue Jan 30 01:23:52 2018 Return-Path: X-Original-To: netslices@ietfa.amsl.com Delivered-To: netslices@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 8DF93129C6B for ; Tue, 30 Jan 2018 01:23:50 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2.61 X-Spam-Level: X-Spam-Status: No, score=-2.61 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_LOW=-0.7, SPF_PASS=-0.001, T_RP_MATCHES_RCVD=-0.01, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id fLNTk511695v for ; Tue, 30 Jan 2018 01:23:48 -0800 (PST) Received: from tama50.ecl.ntt.co.jp (tama50.ecl.ntt.co.jp [129.60.39.147]) by ietfa.amsl.com (Postfix) with ESMTP id 5C559129C6C for ; Tue, 30 Jan 2018 01:23:43 -0800 (PST) Received: from vc1.ecl.ntt.co.jp (vc1.ecl.ntt.co.jp [129.60.86.153]) by tama50.ecl.ntt.co.jp (8.13.8/8.13.8) with ESMTP id w0U9NaA2019223 for ; Tue, 30 Jan 2018 18:23:36 +0900 Received: from vc1.ecl.ntt.co.jp (localhost [127.0.0.1]) by vc1.ecl.ntt.co.jp (Postfix) with ESMTP id C217660294 for ; Tue, 30 Jan 2018 18:23:36 +0900 (JST) Received: from jcms-pop21.ecl.ntt.co.jp (jcms-pop21.ecl.ntt.co.jp [129.60.87.134]) by vc1.ecl.ntt.co.jp (Postfix) with ESMTP id B659A60292 for ; Tue, 30 Jan 2018 18:23:36 +0900 (JST) Received: from [IPv6:::1] (unknown [129.60.13.28]) by jcms-pop21.ecl.ntt.co.jp (Postfix) with ESMTPSA id B2B6B4005E7 for ; Tue, 30 Jan 2018 18:23:36 +0900 (JST) From: Shunsuke Homma References: <151729656264.27532.17904979385636268749.idtracker@ietfa.amsl.com> Message-ID: Date: Tue, 30 Jan 2018 18:23:03 +0900 User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:52.0) Gecko/20100101 Thunderbird/52.5.2 MIME-Version: 1.0 In-Reply-To: <151729656264.27532.17904979385636268749.idtracker@ietfa.amsl.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit To: NetSlices@ietf.org X-TM-AS-MML: disable Archived-At: Subject: [Netslices] Fwd: New Version Notification for draft-homma-coms-slice-gateway-00.txt X-BeenThere: netslices@ietf.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: "This list is intended for discussion and review of network slicing at IETF." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 30 Jan 2018 09:23:51 -0000 Hi all, I posted a new draft related to gateway functionalities for network slicing. https://www.ietf.org/internet-drafts/draft-homma-coms-slice-gateway-00.txt We believe that this draft will be help for clarifying whole architecture of network slicing including the data plane and the concept of slice gateway will facilitate providing E2E network slices across multiple domains. If you have any comments or questions, feel free to contact us. Best regards, Shunsuke -------- Forwarded Message -------- Subject: New Version Notification for draft-homma-coms-slice-gateway-00.txt Date: Mon, 29 Jan 2018 23:16:02 -0800 From: internet-drafts@ietf.org To: Xavier de Foy , Xavier de Foy , Shunsuke Homma A new version of I-D, draft-homma-coms-slice-gateway-00.txt has been successfully submitted by Shunsuke Homma and posted to the IETF repository. Name: draft-homma-coms-slice-gateway Revision: 00 Title: Gateway Function for Network Slicing Document date: 2018-01-31 Group: Individual Submission Pages: 22 URL: https://www.ietf.org/internet-drafts/draft-homma-coms-slice-gateway-00.txt Status: https://datatracker.ietf.org/doc/draft-homma-coms-slice-gateway/ Htmlized: https://tools.ietf.org/html/draft-homma-coms-slice-gateway-00 Htmlized: https://datatracker.ietf.org/doc/html/draft-homma-coms-slice-gateway-00 Abstract: This document describes the roles and requirements for a slice gateway which is a function or function group on the data plane for connecting network slice subnets and providing network slices from end to end. 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 From nobody Tue Jan 30 01:28:32 2018 Return-Path: X-Original-To: netslices@ietfa.amsl.com Delivered-To: netslices@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id B12881316E6 for ; Tue, 30 Jan 2018 01:28:31 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -4.23 X-Spam-Level: X-Spam-Status: No, score=-4.23 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, RCVD_IN_MSPIKE_H3=-0.01, RCVD_IN_MSPIKE_WL=-0.01, SPF_PASS=-0.001, T_RP_MATCHES_RCVD=-0.01, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id ROmdWLk95Mph for ; Tue, 30 Jan 2018 01:28:29 -0800 (PST) Received: from huawei.com (lhrrgout.huawei.com [194.213.3.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id A0AAC1316C6 for ; Tue, 30 Jan 2018 01:28:29 -0800 (PST) Received: from LHREML714-CAH.china.huawei.com (unknown [172.18.7.107]) by Forcepoint Email with ESMTP id D0CB8BF9B16D9 for ; Tue, 30 Jan 2018 09:28:25 +0000 (GMT) Received: from DGGEMI401-HUB.china.huawei.com (10.3.17.134) by LHREML714-CAH.china.huawei.com (10.201.108.37) with Microsoft SMTP Server (TLS) id 14.3.361.1; Tue, 30 Jan 2018 09:28:27 +0000 Received: from DGGEMI509-MBX.china.huawei.com ([169.254.1.109]) by dggemi401-hub.china.huawei.com ([10.3.17.134]) with mapi id 14.03.0361.001; Tue, 30 Jan 2018 17:28:23 +0800 From: "qiangli (D)" To: 'NetSlices' Thread-Topic: New Version Notification for draft-geng-coms-architecture-00.txt Thread-Index: AQHTmadXyWjYTZAO7U2SUbUhQOk56qOMI2PA Date: Tue, 30 Jan 2018 09:28:22 +0000 Message-ID: <06C389826B926F48A557D5DB5A54C4ED2A5F73EE@dggemi509-mbx.china.huawei.com> References: <151730220437.27528.17816136119126233868.idtracker@ietfa.amsl.com> In-Reply-To: <151730220437.27528.17816136119126233868.idtracker@ietfa.amsl.com> Accept-Language: zh-CN, en-US Content-Language: zh-CN X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.130.163.138] Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 MIME-Version: 1.0 X-CFilter-Loop: Reflected Archived-At: Subject: [Netslices] FW: New Version Notification for draft-geng-coms-architecture-00.txt X-BeenThere: netslices@ietf.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: "This list is intended for discussion and review of network slicing at IETF." 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[163.117.223.148]) by smtp.gmail.com with ESMTPSA id c24sm14991949wre.10.2018.01.30.02.25.28 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Tue, 30 Jan 2018 02:25:28 -0800 (PST) Message-ID: <1517307927.3201.7.camel@it.uc3m.es> From: Carlos =?ISO-8859-1?Q?Jes=FAs?= Bernardos Cano Reply-To: cjbc@it.uc3m.es To: Pedro Martinez-Julia , Xavier de Foy Cc: NetSlices@ietf.org Date: Tue, 30 Jan 2018 11:25:27 +0100 In-Reply-To: <20180130043352.GB15400@spectre> References: <1517163726.4051.23.camel@it.uc3m.es> <20180130043352.GB15400@spectre> Organization: Universidad Carlos III de Madrid Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.26.3-1 Mime-Version: 1.0 Content-Transfer-Encoding: 8bit Archived-At: Subject: Re: [Netslices] Preliminary charter text for discussion X-BeenThere: netslices@ietf.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: "This list is intended for discussion and review of network slicing at IETF." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 30 Jan 2018 10:25:55 -0000 Hi Pedro, Xavier, I like your proposal, thanks. I think now it is more clear. Thanks, Carlos On Tue, 2018-01-30 at 13:33 +0900, Pedro Martinez-Julia wrote: > Dear Xavier et al., > > I have rephrased the charter to make it more concise and clear: > > A network slice is a set of related infrastructure resources and > service > functions with qualities that respond to specific requirements, being > able to cross multiple domains and use heterogeneous technologies. > The > goal of this group is to produce and promote a technology-independent > and resource-centric management plane for network slices. Resources > associated with a network slice are normally comprised of physical > and > logical connections in access, aggregation and backbone networks as > well > as computing and storage elements. Service functions associated with > a > network slice include network functions and network function chains > pre-defined using corresponding network infrastructure elements. > > Please consider using this text or part of it. Thank you very much. > > Regards, > Pedro > > On Mon, Jan 29, 2018 at 01:50:24PM -0500, Xavier de Foy wrote: > > Thanks Carlos, do you think rewording the first paragraph like this > > helps? > > (Re-using text from other proponents) > > > > A network slice is a combination of infrastructure resources and > > service > > functions constructed according to customized requirements. Such a > > network > > slice may cross multiple domains using different infrastructure > > technologies. The goal of this group is to produce a technology- > > independent > > and resource-centric management plane for network slices. > > Infrastructure > > resources associated with a network slice are normally comprised of > > physical/logical connections in access, aggregation and backbone > > networks > > as well as computing and storage elements. Service functions > > associated > > with a network slice include network functions and network function > > chains > > pre-defined using corresponding network infrastructure elements. > > > > Regards, > > Xavier. > > > > On Sun, Jan 28, 2018 at 1:22 PM, Carlos Jesús Bernardos Cano < > > cjbc@it.uc3m.es> wrote: > > > > > Hi Xavier, > > > > > > One quick comment (apologies for being inactive, and for maybe > > > asking > > > about something you have already discussed) from a first read: > > > > > > I think the Conext part should start with a 2-line definition of > > > network slice. This should provide the context of is understood > > > as > > > network slice by the COMS WG. > > > > > > Thanks, > > > > > > Carlos > > > > > > On Sat, 2018-01-27 at 12:51 -0500, Xavier de Foy wrote: > > > > Hi all, a group of COMS proponents prepared a preliminary > > > > charter > > > > text, taking into account recommendations collected when > > > > discussing > > > > the BoF request for IETF 100. > > > > > > > > The recommendations were for: > > > > 1. better account of the 4 key elements used in COMS: > > > > connectivity, > > > > compute, storage resources + network & service functions; > > > > 2. better description of the functional blocks and their > > > > positions in > > > > COMS; > > > > 3. better FCAPS coverage; > > > > 4. better coverage of the management of the data plane. > > > > > > > > Please share your comments on this list by Feb 1st. Other COMS > > > > proponents are also invited to provide additional information > > > > to help > > > > with the discussion. > > > > > > > > Best Regards, > > > > Xavier, on behalf of COMS proponents. > > > > > > > > > > > > I. Context > > > > > > > > The Common Operations and Management on Network Slices (COMS) > > > > WG > > > > standardizes slice-level operations and management of the > > > > resources > > > > associated with a network slice. These resources include both > > > > network > > > > infrastructures and service functions. More specifically, > > > > network > > > > infrastructures are normally comprised of physical/logical > > > > connections in access, aggregation and backbone networks as > > > > well as > > > > computing and storage elements. Meantime, service functions > > > > include > > > > network functions and network function chains which are pre- > > > > defined > > > > using corresponding network infrastructure elements. Such > > > > resources > > > > may be parts of different domains enabled by different > > > > technologies. > > > > > > > > A "Network Slice" is realized using a collection of > > > > technologies > > > > spanning across data, control and management planes. Many of > > > > them > > > > rely on existing IETF technologies including both concluded and > > > > in- > > > > progress works such as: > > > > - Data plane: DetNet, TE-Tunnels, MPLS, Segment Routing VPNs, > > > > NVO3 > > > > etc. > > > > - Controller and/or control plane: ACTN, PCE and RSVP-TE > > > > (requiring > > > > LDP, BGP, OSPF awareness at level below) etc. > > > > - Management plane: YANG, OAM etc. > > > > > > > > The foundation of COMS is a technology-independent and > > > > resource- > > > > centric management plane. In reality, the network slice > > > > provider may > > > > have diverse technology choices in different domains due to > > > > geographical and commercial reasons. Therefore, COMS makes no > > > > assumption on which technology is used for specific domains. > > > > The goal > > > > of COMS is to define a common and inter-operative management > > > > mechanism, which is essential for the concept of network > > > > slicing > > > > being adopted in a system with heterogeneous network > > > > infrastructures > > > > and services functions. Major characteristics include: > > > > - Enabling composition of slices within a single or over > > > > multiple > > > > domains. > > > > - Allowing the operation and management of a network slice in a > > > > uniform manner, even when this network slice span multiple > > > > technology > > > > and/or administrative domains. > > > > - Enabling deployment of services over individual slices. > > > > > > > > II. Scope > > > > > > > > The WG will describe an overall architecture for network > > > > slicing. To > > > > manage network slices in a technology-independent manner, the > > > > network > > > > slice provider (NSP) will need to communicate with a network > > > > slice > > > > orchestrator (NSO) over a COMS Service Delivery Interface > > > > (SDI). The > > > > COMS SDI can also be used between network slice orchestrators, > > > > enabling hierarchical management through the notion of network > > > > slice > > > > subnets. Network slices will be leased to tenants, which will > > > > be able > > > > to use Customer Service Interface (CSI) exposed by the NS > > > > provider to > > > > run management tasks (e.g., on-demand measurement) within their > > > > slice > > > > instance under certain policies. > > > > > > > > The WG will describe an information model representing a > > > > network > > > > slice, accounting for the key elements used in network slices: > > > > connectivity, compute, storage resources, network and service > > > > functions — this information model includes the representation > > > > of > > > > managed objects and corresponding management and operations, > > > > will > > > > guide the design of data models on SDI and CSI and also will > > > > enable > > > > orchestrators interworking. > > > > > > > > The WG will specify requirements, operations and management > > > > functionalities on network slicing interfaces SDI and/or CSI > > > > including: > > > > 1 Network slice service profile, e.g. set by NSP over SDI, > > > > including > > > > high-level parameters for network infrastructures and service > > > > functions, together with their corresponding performance > > > > requirements. > > > > 2 Lifecycle management of network slice. > > > > 3 Other FCAPS functions. An important task of NSP is to > > > > aggregate > > > > faults, performance, status information and performance > > > > guarantees > > > > for certain services. > > > > 4 Slice composition or stitching in multi-domain environment. > > > > 5 Slice management by the tenant under the control of NSP, > > > > including > > > > deploying network services over a slice. > > > > > > > > The WG will specify requirements and functionalities of data > > > > plane > > > > entities as needed to enable the management of network slices. > > > > For > > > > example, this may include abstractions of policy control and > > > > enforcement, or gateway functionalities. The WG will also study > > > > the > > > > mapping between the abstract information model and managed > > > > entities, > > > > and will liaise with other IETF WGs as needed. However, the WG > > > > will > > > > not attempt to replicate data plane technologies including > > > > DetNet, > > > > TE-Tunnels, MPLS, Segment Routing VPNs, NVO3 etc. > > > > > > > > III. Deliverables > > > > > > > > WG deliverables are listed below and may be split in any number > > > > of > > > > documents as determined by the WG: > > > > - Problem statement and use cases for management of network > > > > slices. > > > > - Architecture of network slices. > > > > - Information model(s) and operations for network slices on > > > > topics > > > > described above in the scope section. > > > > - SDI and CSI interface specifications and relevant YANG > > > > models. > > > > - Study the mappings of technology independent network > > > > equipment > > > > configurations derived from the information model towards > > > > specific > > > > technologies and coordination with relevant WGs as needed. > > > > > > > > IV. Milestones > > > > > > > > Dec 2018 Problem Statement, use cases and architecture > > > > Dec 2018 Common information model and related YANG model > > > > June 2019 Network slices composition and interworking > > > > October 2019 FCAPS management functions and operations on > > > > network > > > > slices including abstractions of policy control > > > > and > > > > enforcement, or gateway functionalities. > > > > March 2020 SDI and CSI interface specifications and relevant > > > > YANG > > > > models > > > > > > > > _______________________________________________ > > > > 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 Tue Jan 30 02:51:19 2018 Return-Path: X-Original-To: netslices@ietfa.amsl.com Delivered-To: netslices@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 1986212E03E for ; Tue, 30 Jan 2018 02:51:18 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2.61 X-Spam-Level: X-Spam-Status: No, score=-2.61 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_LOW=-0.7, SPF_PASS=-0.001, T_RP_MATCHES_RCVD=-0.01, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id QH6YEsVUDydc for ; Tue, 30 Jan 2018 02:51:15 -0800 (PST) Received: from tama500.ecl.ntt.co.jp (tama500.ecl.ntt.co.jp [129.60.39.148]) by ietfa.amsl.com (Postfix) with ESMTP id 98B34131B37 for ; Tue, 30 Jan 2018 02:45:26 -0800 (PST) Received: from vc2.ecl.ntt.co.jp (vc2.ecl.ntt.co.jp [129.60.86.154]) by tama500.ecl.ntt.co.jp (8.13.8/8.13.8) with ESMTP id w0UAjPJx002950 for ; Tue, 30 Jan 2018 19:45:25 +0900 Received: from vc2.ecl.ntt.co.jp (localhost [127.0.0.1]) by vc2.ecl.ntt.co.jp (Postfix) with ESMTP id E0CC260283 for ; Tue, 30 Jan 2018 19:45:25 +0900 (JST) Received: from jcms-pop21.ecl.ntt.co.jp (jcms-pop21.ecl.ntt.co.jp [129.60.87.134]) by vc2.ecl.ntt.co.jp (Postfix) with ESMTP id BC48D5F593 for ; Tue, 30 Jan 2018 19:45:25 +0900 (JST) Received: from [IPv6:::1] (unknown [129.60.13.28]) by jcms-pop21.ecl.ntt.co.jp (Postfix) with ESMTPSA id B89F24005E7 for ; Tue, 30 Jan 2018 19:45:25 +0900 (JST) References: From: Shunsuke Homma Message-ID: <6e8bee29-9458-92a1-f2b5-507d9da642a2@lab.ntt.co.jp> Date: Tue, 30 Jan 2018 19:44:47 +0900 User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:52.0) Gecko/20100101 Thunderbird/52.5.2 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 8bit To: netslices@ietf.org X-TM-AS-MML: disable Archived-At: Subject: Re: [Netslices] Preliminary charter text for discussion X-BeenThere: netslices@ietf.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: "This list is intended for discussion and review of network slicing at IETF." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 30 Jan 2018 10:51:18 -0000 Hi Xavier, authors, Thanks a lot for your greatly effort. IMO, as I mentioned in the notifying mail of slice gateway draft, defining requirements and fanctionalities of data plane are also important to clarifying whole architecture of network slicing, and thus I think the current charter text is in good shape. Also, I have a small question about milestones. As far as I know, recently, several SDOs (e.g., 3GPP, TMF and ZSM) are studying network slicing framework. Do you have any plans or assumptions to cooperate with them? Also, are these milestones established depending on schedule of other SDOs? Regards, Shunsuke On 2018/01/28 2:51, Xavier de Foy wrote: > Hi all, a group of COMS proponents prepared a preliminary charter text, > taking into account recommendations collected when discussing the BoF > request for IETF 100 > . > > The recommendations were for: > 1. better account of the 4 key elements used in COMS: connectivity, > compute, storage resources + network & service functions; > 2. better description of the functional blocks and their positions in COMS; > 3. better FCAPS coverage; > 4. better coverage of the management of the data plane. > > Please share your comments on this list by Feb 1st. Other COMS > proponents are also invited to provide additional information to help > with the discussion. > > Best Regards, > Xavier, on behalf of COMS proponents. > > > I. Context > > The Common Operations and Management on Network Slices (COMS) WG > standardizes slice-level operations and management of the resources > associated with a network slice. These resources include both network > infrastructures and service functions. More specifically, network > infrastructures are normally comprised of physical/logical connections > in access, aggregation and backbone networks as well as computing and > storage elements. Meantime, service functions include network functions > and network function chains which are pre-defined using corresponding > network infrastructure elements. Such resources may be parts of > different domains enabled by different technologies. > > A "Network Slice" is realized using a collection of technologies > spanning across data, control and management planes. Many of them rely > on existing IETF technologies including both concluded and in-progress > works such as: > - Data plane: DetNet, TE-Tunnels, MPLS, Segment Routing VPNs, NVO3 etc. > - Controller and/or control plane: ACTN, PCE and RSVP-TE (requiring LDP, > BGP, OSPF awareness at level below) etc. > - Management plane: YANG, OAM etc. > > The foundation of COMS is a technology-independent and resource-centric > management plane. In reality, the network slice provider may have > diverse technology choices in different domains due to geographical and > commercial reasons. Therefore, COMS makes no assumption on which > technology is used for specific domains. The goal of COMS is to define a > common and inter-operative management mechanism, which is essential for > the concept of network slicing being adopted in a system with > heterogeneous network infrastructures and services functions. Major > characteristics include: > - Enabling composition of slices within a single or over multiple domains. > - Allowing the operation and management of a network slice in a uniform > manner, even when this network slice span multiple technology and/or > administrative domains. > - Enabling deployment of services over individual slices. > > II. Scope > > The WG will describe an overall architecture for network slicing. To > manage network slices in a technology-independent manner, the network > slice provider (NSP) will need to communicate with a network slice > orchestrator (NSO) over a COMS Service Delivery Interface (SDI). The > COMS SDI can also be used between network slice orchestrators, enabling > hierarchical management through the notion of network slice subnets. > Network slices will be leased to tenants, which will be able to use > Customer Service Interface (CSI) exposed by the NS provider to run > management tasks (e.g., on-demand measurement) within their slice > instance under certain policies. > > The WG will describe an information model representing a network slice, > accounting for the key elements used in network slices: connectivity, > compute, storage resources, network and service functions — this > information model includes the representation of managed objects and > corresponding management and operations, will guide the design of data > models on SDI and CSI and also will enable orchestrators interworking. > > The WG will specify requirements, operations and management > functionalities on network slicing interfaces SDI and/or CSI including: > 1 Network slice service profile, e.g. set by NSP over SDI, including > high-level parameters for network infrastructures and service functions, > together with their corresponding performance requirements. > 2 Lifecycle management of network slice. > 3 Other FCAPS functions. An important task of NSP is to aggregate > faults, performance, status information and performance guarantees for > certain services. > 4 Slice composition or stitching in multi-domain environment. > 5 Slice management by the tenant under the control of NSP, including > deploying network services over a slice. > > The WG will specify requirements and functionalities of data plane > entities as needed to enable the management of network slices. For > example, this may include abstractions of policy control and > enforcement, or gateway functionalities. The WG will also study the > mapping between the abstract information model and managed entities, and > will liaise with other IETF WGs as needed. However, the WG will not > attempt to replicate data plane technologies including DetNet, > TE-Tunnels, MPLS, Segment Routing VPNs, NVO3 etc. > > III. Deliverables > > WG deliverables are listed below and may be split in any number of > documents as determined by the WG: > - Problem statement and use cases for management of network slices. > - Architecture of network slices. > - Information model(s) and operations for network slices on topics > described above in the scope section. > - SDI and CSI interface specifications and relevant YANG models. > - Study the mappings of technology independent network equipment > configurations derived from the information model towards specific > technologies and coordination with relevant WGs as needed. > > IV. Milestones > > Dec 2018     Problem Statement, use cases and architecture > Dec 2018     Common information model and related YANG model > June 2019    Network slices composition and interworking > October 2019 FCAPS management functions and operations on network >              slices including abstractions of policy control and >              enforcement, or gateway functionalities. > March 2020   SDI and CSI interface specifications and relevant YANG models > > > > _______________________________________________ > Netslices mailing list > Netslices@ietf.org > https://www.ietf.org/mailman/listinfo/netslices > -- ---------------------------------- Shunsuke Homma TEL: +81 422 59 3486 FAX: +81 422 60 7460 NTT Network Service Systems Labs. Musashino city, Tokyo, Japan ---------------------------------- From nobody Tue Jan 30 07:21:58 2018 Return-Path: X-Original-To: netslices@ietfa.amsl.com Delivered-To: netslices@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id D86AF13186E for ; Tue, 30 Jan 2018 07:21:56 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2.699 X-Spam-Level: X-Spam-Status: No, score=-2.699 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, FREEMAIL_FROM=0.001, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_LOW=-0.7, SPF_PASS=-0.001] autolearn=ham autolearn_force=no Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=gmail.com Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 0ZgJ_Lo1TQFg for ; Tue, 30 Jan 2018 07:21:54 -0800 (PST) Received: from mail-qk0-x22d.google.com (mail-qk0-x22d.google.com [IPv6:2607:f8b0:400d:c09::22d]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id C02D312EBEE for ; Tue, 30 Jan 2018 07:20:51 -0800 (PST) Received: by mail-qk0-x22d.google.com with SMTP id d18so10529509qke.7 for ; Tue, 30 Jan 2018 07:20:51 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :cc; bh=mb2IAaJDDW8Wa+fXlFF+ATvL0H1WwkTjkM5Ep2YZAqY=; b=NV44aPA5NxfvfE9PGpZMGgAsbXKW0fMsoCRTO5LfJSmUPzLLGd1qaph8Ei2u6XnUaf cGKifWSM91WMEcL2hfOnNZSyzsj81HxBvfS/H2cidiLaljd4t002XZbApiVX7+PO7YIE HGfsaWvY/IJA2gUCUeRFZAsTMutWedEL5l5Zh2oQkgg4YsPjoD8CSal4sY7rLRD2O/Hv dxmLoU9NHuNtP4NketiOzEHzHDjmUXEKQcIfyXE+ClwbIWiODjfWH5gVXQSM1wujHZyV JD7ShZH4uXD+x6Oc8bcEshq6w3tM/WNUXV9IkNCrLL8KOVfuT+AHpVUi8h5lG8fTMzjR u7RQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:in-reply-to:references:from:date :message-id:subject:to:cc; bh=mb2IAaJDDW8Wa+fXlFF+ATvL0H1WwkTjkM5Ep2YZAqY=; b=UcXjXbCeFcL5daPVdO0tJzwpBSezM0IDNYgK/A1aIZvPLFn1kGETyC5XNvLLS0DsWv Ecks/GlFYk9dv6uKSwSvbWO0FpSQPY1UU9Ao/4eqbHBuLpxHlIgydAo1qPIbG83H+erp mT73PCQrozDzJiFA2Bjxeoic2lKgcNAYMXskHmWTh0y0NtWrCTeHpIE6pRwEzs1sZkJ+ h+5aFvoMB8zXXNYxo4YkcoXwUtu4aH9BQb7c89C/XW9Zpun7POfjaUgzbWcHUdg032j/ Dy6mNWBPh9I9KOVgLtAEEzAjT0NO3UTFfDYwgintLo6vAO8hpCDXAswtRz0zUPqmImN5 TrFA== X-Gm-Message-State: AKwxytc+0kQbMwF5HSe0D1oETRgTgwvooPrfpRt4s+15lyoYqI4vXWev vSfkA+iInd/cJBzEgz29SGAudMUCA7mN1mZjxye+VA== X-Google-Smtp-Source: AH8x227oUsp8qmg47ZahPdNnRR0t4odWoDPwP9r1w0bjUP6sV+WY2CewOVVux5t9TMd0EImeCX+zElAT6DUim8kcHMo= X-Received: by 10.55.204.134 with SMTP id n6mr1973394qkl.169.1517325650788; Tue, 30 Jan 2018 07:20:50 -0800 (PST) MIME-Version: 1.0 Received: by 10.237.60.194 with HTTP; Tue, 30 Jan 2018 07:20:50 -0800 (PST) In-Reply-To: <1517307927.3201.7.camel@it.uc3m.es> References: <1517163726.4051.23.camel@it.uc3m.es> <20180130043352.GB15400@spectre> <1517307927.3201.7.camel@it.uc3m.es> From: Xavier de Foy Date: Tue, 30 Jan 2018 10:20:50 -0500 Message-ID: To: =?UTF-8?Q?Carlos_Jes=C3=BAs_Bernardos_Cano?= Cc: Pedro Martinez-Julia , NetSlices@ietf.org Content-Type: multipart/alternative; boundary="001a1149e5886ca9f10563ffe845" Archived-At: Subject: Re: [Netslices] Preliminary charter text for discussion X-BeenThere: netslices@ietf.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: "This list is intended for discussion and review of network slicing at IETF." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 30 Jan 2018 15:21:57 -0000 --001a1149e5886ca9f10563ffe845 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Thanks for clarifying the text Pedro. For reference and as base for future comments, here is a fixed version of the full text with your wording. Regards, Xavier. I. Context A network slice is a set of related infrastructure resources and service functions with qualities that respond to specific requirements, being able to cross multiple domains and use heterogeneous technologies. The goal of this group is to produce and promote a technology-independent and resource-centric management plane for network slices. Resources associated with a network slice are normally comprised of physical and logical connections in access, aggregation and backbone networks as well as computing and storage elements. Service functions associated with a network slice include network functions and network function chains pre-defined using corresponding network infrastructure elements. A "Network Slice" is realized using a collection of technologies spanning across data, control and management planes. Many of them rely on existing IETF technologies including both concluded and in-progress works such as: - Data plane: DetNet, TE-Tunnels, MPLS, Segment Routing VPNs, NVO3 etc. - Controller and/or control plane: ACTN, PCE and RSVP-TE (requiring LDP, BGP, OSPF awareness at level below) etc. - Management plane: YANG, OAM etc. The foundation of COMS is a technology-independent and resource-centric management plane. In reality, the network slice provider may have diverse technology choices in different domains due to geographical and commercial reasons. Therefore, COMS makes no assumption on which technology is used for specific domains. The goal of COMS is to define a common and inter-operative management mechanism, which is essential for the concept of network slicing being adopted in a system with heterogeneous network infrastructures and services functions. Major characteristics include: - Enabling composition of slices within a single or over multiple domains. - Allowing the operation and management of a network slice in a uniform manner, even when this network slice span multiple technology and/or administrative domains. - Enabling deployment of services over individual slices. II. Scope The WG will describe an overall architecture for network slicing. To manage network slices in a technology-independent manner, the network slice provider (NSP) will need to communicate with a network slice orchestrator (NSO) over a COMS Service Delivery Interface (SDI). The COMS SDI can also be used between network slice orchestrators, enabling hierarchical management through the notion of network slice subnets. Network slices will be leased to tenants, which will be able to use Customer Service Interface (CSI) exposed by the NS provider to run management tasks (e.g., on-demand measurement) within their slice instance under certain policies. The WG will describe an information model representing a network slice, accounting for the key elements used in network slices: connectivity, compute, storage resources, network and service functions =E2=80=94 this information model includes the representation of managed objects and corresponding management and operations, will guide the design of data models on SDI and CSI and also will enable orchestrators interworking. The WG will specify requirements, operations and management functionalities on network slicing interfaces SDI and/or CSI including: 1 Network slice service profile, e.g. set by NSP over SDI, including high-level parameters for network infrastructures and service functions, together with their corresponding performance requirements. 2 Lifecycle management of network slice. 3 Other FCAPS functions. An important task of NSP is to aggregate faults, performance, status information and performance guarantees for certain services. 4 Slice composition or stitching in multi-domain environment. 5 Slice management by the tenant under the control of NSP, including deploying network services over a slice. The WG will specify requirements and functionalities of data plane entities as needed to enable the management of network slices. For example, this may include abstractions of policy control and enforcement, or gateway functionalities. The WG will also study the mapping between the abstract information model and managed entities, and will liaise with other IETF WGs as needed. However, the WG will not attempt to replicate data plane technologies including DetNet, TE-Tunnels, MPLS, Segment Routing VPNs, NVO3 etc. III. Deliverables WG deliverables are listed below and may be split in any number of documents as determined by the WG: - Problem statement and use cases for management of network slices. - Architecture of network slices. - Information model(s) and operations for network slices on topics described above in the scope section. - SDI and CSI interface specifications and relevant YANG models. - Study the mappings of technology independent network equipment configurations derived from the information model towards specific technologies and coordination with relevant WGs as needed. IV. Milestones Dec 2018 Problem Statement, use cases and architecture Dec 2018 Common information model and related YANG model June 2019 Network slices composition and interworking October 2019 FCAPS management functions and operations on network slices including abstractions of policy control and enforcement, or gateway functionalities. March 2020 SDI and CSI interface specifications and relevant YANG models --001a1149e5886ca9f10563ffe845 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Thanks for clarifying the text Pedro. For refere= nce and as base for future comments, here is a fixed version of the full te= xt with your wording.
Regards,
Xavier.

I= . Context

A network slice is a set of related infrastructure resources and service fu= nctions with qualities that respond to specific requirements, being able to= cross multiple domains and use heterogeneous technologies. The goal of thi= s group is to produce and promote a technology-independent and resource-cen= tric management plane for network slices. Resources associated with a netwo= rk slice are normally comprised of physical and lo= gical connections in access, aggregation and backbone networks as well as c= omputing and storage elements. Service functions associated with a network = slice include network functions and network function chains pre-defined usi= ng corresponding network infrastructure elements.

A "Network Slice" is realized using a collection of technologies s= panning across data, control and management planes. Many of them rely on=20 existing IETF technologies including both concluded and in-progress=20 works such as:
- Data plane: DetNet, TE-Tunnels, MPLS, Segment Routing V= PNs, NVO3 etc.
- Controller and/or control plane: ACTN, PCE and RSVP-TE = (requiring LDP, BGP, OSPF awareness at level below) etc.
- Management pl= ane: YANG, OAM etc.

The foundation of COMS is a technology-independent and resource-centric=20 management plane. In reality, the network slice provider may have=20 diverse technology choices in different domains due to geographical and=20 commercial reasons. Therefore, COMS makes no assumption on which=20 technology is used for specific domains. The goal of COMS is to define a common and inter-operative management mechanism, which is essential for the concept of network slicing being adopted in a system with=20 heterogeneous network infrastructures and services functions. Major=20 characteristics include:
- Enabling composition of slices within a singl= e or over multiple domains.
- Allowing the operation and management of a network slice in a uniform=20 manner, even when this network slice span multiple technology and/or=20 administrative domains.
- Enabling deployment of services over individua= l slices.

II. Scope

The WG will describe an overall architecture for network slicing. To manage network slices in a technology-independent manner, the network slice=20 provider (NSP) will need to communicate with a network slice=20 orchestrator (NSO) over a COMS Service Delivery Interface (SDI). The=20 COMS SDI can also be used between network slice orchestrators, enabling=20 hierarchical management through the notion of network slice subnets.=20 Network slices will be leased to tenants, which will be able to use=20 Customer Service Interface (CSI) exposed by the NS provider to run=20 management tasks (e.g., on-demand measurement) within their slice=20 instance under certain policies.

The WG will describe an=20 information model representing a network slice, accounting for the key=20 elements used in network slices: connectivity, compute, storage=20 resources, network and service functions =E2=80=94 this information model= =20 includes the representation of managed objects and corresponding=20 management and operations, will guide the design of data models on SDI=20 and CSI and also will enable orchestrators interworking.

The WG=20 will specify requirements, operations and management functionalities on=20 network slicing interfaces SDI and/or CSI including:
1 Network slice=20 service profile, e.g. set by NSP over SDI, including high-level=20 parameters for network infrastructures and service functions, together=20 with their corresponding performance requirements.
2 Lifecycle managemen= t of network slice.
3 Other FCAPS functions. An important task of NSP is to aggregate faults, performance, status information and performance guarantees for certain=20 services.
4 Slice composition or stitching in multi-domain environment.<= br>5 Slice management by the tenant under the control of NSP, including dep= loying network services over a slice.

The WG will specify requirements and functionalities of data plane entities as needed to enable the management of network slices. For example, this may include abstractions of policy control and enforcement, or gateway=20 functionalities. The WG will also study the mapping between the abstract information model and managed entities, and will liaise with other IETF WGs as needed. However, the WG will not attempt to replicate data plane technologies including DetNet, TE-Tunnels, MPLS, Segment Routing VPNs,=20 NVO3 etc.

III. Deliverables

WG deliverables are listed below = and may be split in any number of documents as determined by the WG:
- P= roblem statement and use cases for management of network slices.
- Archi= tecture of network slices.
- Information model(s) and operations for net= work slices on topics described above in the scope section.
- SDI and CS= I interface specifications and relevant YANG models.
- Study the mappings of technology independent network equipment=20 configurations derived from the information model towards specific=20 technologies and coordination with relevant WGs as needed.

IV. Miles= tones

Dec 2018=C2=A0=C2=A0=C2=A0=C2=A0 Problem Statement, use cases = and architecture
Dec 2018=C2=A0=C2=A0=C2=A0=C2=A0 Common information mod= el and related YANG model
June 2019=C2=A0=C2=A0=C2=A0 Network slices com= position and interworking
October 2019 FCAPS management functions and op= erations on network
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2= =A0=C2=A0=C2=A0=C2=A0 slices including abstractions of policy control and <= br>=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0= enforcement, or gateway functionalities.
March 2020=C2=A0=C2=A0 SDI and= CSI interface specifications and relevant YANG models

--001a1149e5886ca9f10563ffe845-- From nobody Tue Jan 30 10:46:07 2018 Return-Path: X-Original-To: netslices@ietfa.amsl.com Delivered-To: netslices@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id DB34812EB79 for ; Tue, 30 Jan 2018 10:46:05 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -4.229 X-Spam-Level: X-Spam-Status: No, score=-4.229 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_MED=-2.3, RCVD_IN_MSPIKE_H3=-0.01, RCVD_IN_MSPIKE_WL=-0.01, SPF_PASS=-0.001, T_RP_MATCHES_RCVD=-0.01, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id sWn-lLelzf8w for ; Tue, 30 Jan 2018 10:46:02 -0800 (PST) Received: from huawei.com (lhrrgout.huawei.com [194.213.3.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id C6AFE12EAD6 for ; Tue, 30 Jan 2018 10:46:00 -0800 (PST) Received: from LHREML713-CAH.china.huawei.com (unknown [172.18.7.107]) by Forcepoint Email with ESMTP id 5CB61D964F986 for ; Tue, 30 Jan 2018 18:45:56 +0000 (GMT) Received: from SJCEML702-CHM.china.huawei.com (10.208.112.38) by LHREML713-CAH.china.huawei.com (10.201.108.36) with Microsoft SMTP Server (TLS) id 14.3.361.1; Tue, 30 Jan 2018 18:45:58 +0000 Received: from SJCEML521-MBS.china.huawei.com ([169.254.2.168]) by SJCEML702-CHM.china.huawei.com ([169.254.4.179]) with mapi id 14.03.0382.000; Tue, 30 Jan 2018 10:45:55 -0800 From: Kiran.Makhijani To: Xavier de Foy , =?utf-8?B?Q2FybG9zIEplc8O6cyBCZXJuYXJkb3MgQ2Fubw==?= CC: Pedro Martinez-Julia , "NetSlices@ietf.org" Thread-Topic: [Netslices] Preliminary charter text for discussion Thread-Index: AQHTl5eHxJufwPsjxEmxm7smGTOn+6OKILoAgAGaPQCAAKMFAIAAYjuAgABSiAD//7MrgA== Date: Tue, 30 Jan 2018 18:45:54 +0000 Message-ID: <49297C39-EF21-4D3E-898B-4728B61221BB@huawei.com> References: <1517163726.4051.23.camel@it.uc3m.es> <20180130043352.GB15400@spectre> <1517307927.3201.7.camel@it.uc3m.es> In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.209.216.214] Content-Type: multipart/alternative; boundary="_000_49297C39EF214D3E898B4728B61221BBhuaweicom_" MIME-Version: 1.0 X-CFilter-Loop: Reflected Archived-At: Subject: Re: [Netslices] Preliminary charter text for discussion X-BeenThere: netslices@ietf.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: "This list is intended for discussion and review of network slicing at IETF." 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mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 0Xagy_yDIhcf for ; Tue, 30 Jan 2018 12:44:06 -0800 (PST) Received: from mail-qt0-x231.google.com (mail-qt0-x231.google.com [IPv6:2607:f8b0:400d:c0d::231]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id DAC2A12D838 for ; Tue, 30 Jan 2018 12:44:05 -0800 (PST) Received: by mail-qt0-x231.google.com with SMTP id d54so19047347qtd.4 for ; Tue, 30 Jan 2018 12:44:05 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :cc; bh=yIsZgJNyDKJr3pXAYjG/ne8kFLEehRv/a1FwZ3VxFYI=; b=VvRrQBWsusekVG9XUoI9XRvn2GywNkSQLOHsB2ort9ZrSzD+daFhXecsoSnCkSE9gS Vnh5O73M85v6EXdaoFnfYBwx+xf1OZQy3nmPTNLWCwVGhD3DYpPr7IB6OdbwMVo1kIP7 lu6rAjXJNMV1xWTYB2KYz+yAXB5FBVzlo3FVRmqtZ8b1QpuLV/1iD1kpuVV1QoNuzX3n 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id h11mr45178818qta.111.1517345045013; Tue, 30 Jan 2018 12:44:05 -0800 (PST) MIME-Version: 1.0 Received: by 10.237.60.194 with HTTP; Tue, 30 Jan 2018 12:44:04 -0800 (PST) In-Reply-To: <49297C39-EF21-4D3E-898B-4728B61221BB@huawei.com> References: <1517163726.4051.23.camel@it.uc3m.es> <20180130043352.GB15400@spectre> <1517307927.3201.7.camel@it.uc3m.es> <49297C39-EF21-4D3E-898B-4728B61221BB@huawei.com> From: Xavier de Foy Date: Tue, 30 Jan 2018 15:44:04 -0500 Message-ID: To: "Kiran.Makhijani" Cc: =?UTF-8?Q?Carlos_Jes=C3=BAs_Bernardos_Cano?= , Pedro Martinez-Julia , "NetSlices@ietf.org" Content-Type: multipart/alternative; boundary="001a11c10f9068e8580564046c81" Archived-At: Subject: Re: [Netslices] Preliminary charter text for discussion X-BeenThere: netslices@ietf.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: "This list is intended for discussion and review of network slicing at IETF." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 30 Jan 2018 20:44:09 -0000 --001a11c10f9068e8580564046c81 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Thanks Kiran, yes, I think one example is draft-homma-coms-slice-gateway, which looks at the technology-independent requirements on some data plane equipment. One interest of this is to help determine the appropriate abstractions and attributes to use in the models. Your wording looks good but I guess we can wait a bit longer for other comments (here on the list and during tomorrow's COMS proponents meeting). Best Regards, Xavier. On Tue, Jan 30, 2018 at 1:45 PM, Kiran.Makhijani wrote: > Xavier, > > This statement may need some additional clarity. > > =E2=80=9CStudy the mappings of technology independent network equipment > configurations derived from the information model towards specific > technologies and coordination with relevant WGs as needed.=E2=80=9D > > > > I think what you are trying to say is that equipment configurations may > need some work to provide slices related capabilities and support. Am I > correct? > > If yes, then instead of use of =E2=80=9Cstudy=E2=80=9D, we could say some= thing to the > effect =E2=80=9CIdentify and derive technology-independent network equipm= ent > configurations from the Information model in coordination with relevant W= Gs > as needed=E2=80=9D. This shows a clear deliverable. > > > > -Kiran > > *From: *Netslices on behalf of Xavier de Foy > > *Date: *Tuesday, January 30, 2018 at 7:22 AM > *To: *Carlos Jes=C3=BAs Bernardos Cano > *Cc: *Pedro Martinez-Julia , "NetSlices@ietf.org" < > NetSlices@ietf.org> > *Subject: *Re: [Netslices] Preliminary charter text for discussion > > > > Thanks for clarifying the text Pedro. For reference and as base for futur= e > comments, here is a fixed version of the full text with your wording. > > Regards, > > Xavier. > > > I. Context > > A network slice is a set of related infrastructure resources and service > functions with qualities that respond to specific requirements, being abl= e > to cross multiple domains and use heterogeneous technologies. The goal of > this group is to produce and promote a technology-independent and > resource-centric management plane for network slices. Resources associate= d > with a network slice are normally comprised of physical and logical > connections in access, aggregation and backbone networks as well as > computing and storage elements. Service functions associated with a netwo= rk > slice include network functions and network function chains pre-defined > using corresponding network infrastructure elements. > > A "Network Slice" is realized using a collection of technologies spanning > across data, control and management planes. Many of them rely on existing > IETF technologies including both concluded and in-progress works such as: > - Data plane: DetNet, TE-Tunnels, MPLS, Segment Routing VPNs, NVO3 etc. > - Controller and/or control plane: ACTN, PCE and RSVP-TE (requiring LDP, > BGP, OSPF awareness at level below) etc. > - Management plane: YANG, OAM etc. > > The foundation of COMS is a technology-independent and resource-centric > management plane. In reality, the network slice provider may have diverse > technology choices in different domains due to geographical and commercia= l > reasons. Therefore, COMS makes no assumption on which technology is used > for specific domains. The goal of COMS is to define a common and > inter-operative management mechanism, which is essential for the concept = of > network slicing being adopted in a system with heterogeneous network > infrastructures and services functions. Major characteristics include: > - Enabling composition of slices within a single or over multiple domains= . > - Allowing the operation and management of a network slice in a uniform > manner, even when this network slice span multiple technology and/or > administrative domains. > - Enabling deployment of services over individual slices. > > II. Scope > > The WG will describe an overall architecture for network slicing. To > manage network slices in a technology-independent manner, the network sli= ce > provider (NSP) will need to communicate with a network slice orchestrator > (NSO) over a COMS Service Delivery Interface (SDI). The COMS SDI can also > be used between network slice orchestrators, enabling hierarchical > management through the notion of network slice subnets. Network slices wi= ll > be leased to tenants, which will be able to use Customer Service Interfac= e > (CSI) exposed by the NS provider to run management tasks (e.g., on-demand > measurement) within their slice instance under certain policies. > > The WG will describe an information model representing a network slice, > accounting for the key elements used in network slices: connectivity, > compute, storage resources, network and service functions =E2=80=94 this > information model includes the representation of managed objects and > corresponding management and operations, will guide the design of data > models on SDI and CSI and also will enable orchestrators interworking. > > The WG will specify requirements, operations and management > functionalities on network slicing interfaces SDI and/or CSI including: > 1 Network slice service profile, e.g. set by NSP over SDI, including > high-level parameters for network infrastructures and service functions, > together with their corresponding performance requirements. > 2 Lifecycle management of network slice. > 3 Other FCAPS functions. An important task of NSP is to aggregate faults, > performance, status information and performance guarantees for certain > services. > 4 Slice composition or stitching in multi-domain environment. > 5 Slice management by the tenant under the control of NSP, including > deploying network services over a slice. > > The WG will specify requirements and functionalities of data plane > entities as needed to enable the management of network slices. For exampl= e, > this may include abstractions of policy control and enforcement, or gatew= ay > functionalities. The WG will also study the mapping between the abstract > information model and managed entities, and will liaise with other IETF W= Gs > as needed. However, the WG will not attempt to replicate data plane > technologies including DetNet, TE-Tunnels, MPLS, Segment Routing VPNs, NV= O3 > etc. > > III. Deliverables > > WG deliverables are listed below and may be split in any number of > documents as determined by the WG: > - Problem statement and use cases for management of network slices. > - Architecture of network slices. > - Information model(s) and operations for network slices on topics > described above in the scope section. > - SDI and CSI interface specifications and relevant YANG models. > - Study the mappings of technology independent network equipment > configurations derived from the information model towards specific > technologies and coordination with relevant WGs as needed. > > IV. Milestones > > Dec 2018 Problem Statement, use cases and architecture > Dec 2018 Common information model and related YANG model > June 2019 Network slices composition and interworking > October 2019 FCAPS management functions and operations on network > slices including abstractions of policy control and > enforcement, or gateway functionalities. > March 2020 SDI and CSI interface specifications and relevant YANG model= s > --001a11c10f9068e8580564046c81 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Thanks Kiran, yes, I think one example is d= raft-homma-coms-slice-gateway, which looks at the technology-independent re= quirements on some data plane equipment. One interest of this is to help de= termine the appropriate abstractions and attributes to use in the models.
Your wording looks good but I guess we can wait a bit longer for ot= her comments (here on the list and during tomorrow's COMS proponents me= eting).
Best Regards,
Xavier.

On Tue, Jan 30, 2018 at 1:45 PM, Ki= ran.Makhijani <Kiran.Makhijani@huawei.com> wrote:

Xavier,

This statement may need some additional clarity.=

=E2=80=9CStudy the mappings of tech= nology independent network equipment configurations derived from the inform= ation model towards specific technologies and coordination with relevant WGs as needed.=E2=80=9D

=C2=A0

I think what you are trying to say is that equip= ment configurations may need some work to provide slices related capabiliti= es and support. Am I correct?

If yes, then instead of use of =E2=80=9Cstudy=E2= =80=9D, we could say something to the effect =E2=80=9CIdentify and derive t= echnology-independent network equipment configurations from the Information model in coordination with relevant WGs as needed=E2=80=9D. This shows a c= lear deliverable.

=C2=A0

-Kiran=

From: Netslices <netslices-bounce= s@ietf.org> on behalf of Xavier de Foy <x.defoy.ietf@gmail.com>
Date: Tuesday, January 30, 2018 at 7:22 AM
To: Carlos Jes=C3=BAs Bernardos Cano <cjbc@it.uc3m.es>
Cc: Pedro Martinez-Julia <pedro@nict.go.jp>, "NetSlices@ietf.org" <NetSlices@ietf.org>
Subject: Re: [Netslices] Preliminary charter text for discussion<= /u>

=C2=A0

Xavier.


I. Context

A network slice is a set of related infrastructure resources and service fu= nctions with qualities that respond to specific requirements, being able to= cross multiple domains and use heterogeneous technologies. The goal of thi= s group is to produce and promote a technology-independent and resource-centric management plane for network= slices. Resources associated with a network slice are normally comprised o= f physical and logical connections in access,= aggregation and backbone networks as well as computing and storage element= s. Service functions associated with a network slice include network functi= ons and network function chains pre-defined using corresponding network infrastructure elements.

A "Network Slice" is realized using a collection of technologies = spanning across data, control and management planes. Many of them rely on e= xisting IETF technologies including both concluded and in-progress works su= ch as:
- Data plane: DetNet, TE-Tunnels, MPLS, Segment Routing VPNs, NVO3 etc.
- Controller and/or control plane: ACTN, PCE and RSVP-TE (requiring LDP, BG= P, OSPF awareness at level below) etc.
- Management plane: YANG, OAM etc.

The foundation of COMS is a technology-independent and resource-centric man= agement plane. In reality, the network slice provider may have diverse tech= nology choices in different domains due to geographical and commercial reas= ons. Therefore, COMS makes no assumption on which technology is used for specific domains. The goal of COMS is to d= efine a common and inter-operative management mechanism, which is essential= for the concept of network slicing being adopted in a system with heteroge= neous network infrastructures and services functions. Major characteristics include:
- Enabling composition of slices within a single or over multiple domains.<= br> - Allowing the operation and management of a network slice in a uniform man= ner, even when this network slice span multiple technology and/or administr= ative domains.
- Enabling deployment of services over individual slices.

II. Scope

The WG will describe an overall architecture for network slicing. To manage= network slices in a technology-independent manner, the network slice provi= der (NSP) will need to communicate with a network slice orchestrator (NSO) = over a COMS Service Delivery Interface (SDI). The COMS SDI can also be used between network slice orchestrators, = enabling hierarchical management through the notion of network slice subnet= s. Network slices will be leased to tenants, which will be able to use Cust= omer Service Interface (CSI) exposed by the NS provider to run management tasks (e.g., on-demand measurement) w= ithin their slice instance under certain policies.

The WG will describe an information model representing a network slice, acc= ounting for the key elements used in network slices: connectivity, compute,= storage resources, network and service functions =E2=80=94 this informatio= n model includes the representation of managed objects and corresponding management and operations, will guide the design= of data models on SDI and CSI and also will enable orchestrators interwork= ing.

The WG will specify requirements, operations and management functionalities= on network slicing interfaces SDI and/or CSI including:
1 Network slice service profile, e.g. set by NSP over SDI, including high-l= evel parameters for network infrastructures and service functions, together= with their corresponding performance requirements.
2 Lifecycle management of network slice.
3 Other FCAPS functions. An important task of NSP is to aggregate faults, p= erformance, status information and performance guarantees for certain servi= ces.
4 Slice composition or stitching in multi-domain environment.
5 Slice management by the tenant under the control of NSP, including deploy= ing network services over a slice.

The WG will specify requirements and functionalities of data plane entities= as needed to enable the management of network slices. For example, this ma= y include abstractions of policy control and enforcement, or gateway functi= onalities. The WG will also study the mapping between the abstract information model and managed entities, a= nd will liaise with other IETF WGs as needed. However, the WG will not atte= mpt to replicate data plane technologies including DetNet, TE-Tunnels, MPLS= , Segment Routing VPNs, NVO3 etc.

III. Deliverables

WG deliverables are listed below and may be split in any number of document= s as determined by the WG:
- Problem statement and use cases for management of network slices.
- Architecture of network slices.
- Information model(s) and operations for network slices on topics describe= d above in the scope section.
- SDI and CSI interface specifications and relevant YANG models.
- Study the mappings of technology independent network equipment configurat= ions derived from the information model towards specific technologies and c= oordination with relevant WGs as needed.

IV. Milestones

Dec 2018=C2=A0=C2=A0=C2=A0=C2=A0 Problem Statement, use cases and architect= ure
Dec 2018=C2=A0=C2=A0=C2=A0=C2=A0 Common information model and related YANG = model
June 2019=C2=A0=C2=A0=C2=A0 Network slices composition and interworking
October 2019 FCAPS management functions and operations on network
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 sl= ices including abstractions of policy control and
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 en= forcement, or gateway functionalities.
March 2020=C2=A0=C2=A0 SDI and CSI interface specifications and relevant YA= NG models


--001a11c10f9068e8580564046c81-- From nobody Tue Jan 30 13:09:36 2018 Return-Path: X-Original-To: netslices@ietfa.amsl.com Delivered-To: netslices@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id CF2F912FB51 for ; Tue, 30 Jan 2018 13:09:34 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.997 X-Spam-Level: X-Spam-Status: No, score=-1.997 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, FREEMAIL_FROM=0.001, HTML_MESSAGE=0.001, MIME_QP_LONG_LINE=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=gmail.com Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id UTeoTbFixtuT for ; Tue, 30 Jan 2018 13:09:31 -0800 (PST) Received: from mail-it0-x22b.google.com (mail-it0-x22b.google.com [IPv6:2607:f8b0:4001:c0b::22b]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 28CE21316AA for ; Tue, 30 Jan 2018 13:09:30 -0800 (PST) Received: by mail-it0-x22b.google.com with SMTP id b5so2355394itc.3 for ; Tue, 30 Jan 2018 13:09:30 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=user-agent:date:subject:from:to:cc:message-id:thread-topic :references:in-reply-to:mime-version; bh=+LlalUKBd3TYj5oh8jwlPixA+jp7CnUE7pkTnUmbY0c=; b=jnlrxssyaxoaS/NkdP0fVTR4C2baHYrzflXLb9HYphMdp16Tm+f+wYcvOvChqn/Ue5 xSn1GHeU4U1/9PPcppbatSBmo3IG+ORs6TLKdMa7BFOBfVjWeWuBu9vu6xdfghiTjTt7 xFUvcsskpBeQ4opu0re4faLzuuX0778usBeWCjoB3fib14IuL8dVFZixwpWjpi9wIn9b yt91KIp+sWBithecSCp9M59smc4gg862VlQrY0kao7Dvj6dKI3VAfOK+ZG5yxJQo9DgA /opWsroA1KpY1DoxPQv17E3pWQ777KuSgYn5Wm8mB2HJFiyvCUt09M/geLNJOLs6PdLj /9mw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:user-agent:date:subject:from:to:cc:message-id :thread-topic:references:in-reply-to:mime-version; bh=+LlalUKBd3TYj5oh8jwlPixA+jp7CnUE7pkTnUmbY0c=; b=XRgJTGS0+yKQpqgmRnzqIhBS6SxDYy4bq4kWxSXxb/ziav8gQczEOO14tyl7aknMBu cbUXo6uiWKGDyzxNO3paBgs38Rol6ZD8b0fhyp/fRl7LJDn0KMFpWu9H2kRyrOiRDBCj 9XvwDgnqAcgGfLjMKTYGqSGCN2iTQmBo7LY7RwVoCfzQWa+K0AcGQ58V2T92VtRxPQbD rmKpsAvzP1kK9s5jHnR7IgQy6B/XrrKy3KIeoINs1ZdD8qYmqeXkpjONP1E/4OjAQXPk DslnsdoNrAJfOga1xT+bSK9pn7Pt2jCKDT5tjoJYkMNltrWEkFlbe+quwy8/NVN/fn0g dvNg== X-Gm-Message-State: AKwxytdbW1NM+lXe/9odAConZmrj4x5jGlsC/7Z5B1V9jbe+vYl0KXC6 NTtxauVgAj8NUinzJHR4T74= X-Google-Smtp-Source: AH8x227+H5SKJSiRvs9aiKWGTOAMz7mE+Gflae04YiPPhLnF28JeysNuWKqZb+5j5hUa9Fd3lTn8PA== X-Received: by 10.36.227.74 with SMTP id d71mr3763938ith.60.1517346569412; Tue, 30 Jan 2018 13:09:29 -0800 (PST) Received: from [128.203.211.142] ([128.203.211.142]) by smtp.gmail.com with ESMTPSA id n4sm1825240itg.2.2018.01.30.13.09.28 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 30 Jan 2018 13:09:28 -0800 (PST) User-Agent: Microsoft-MacOutlook/10.9.0.180116 Date: Tue, 30 Jan 2018 16:09:25 -0500 From: Jeff Tantsura To: Xavier de Foy , "Kiran.Makhijani" CC: Pedro Martinez-Julia , "NetSlices@ietf.org" , Carlos =?UTF-8?B?SmVzw7pz?= Bernardos Cano Message-ID: Thread-Topic: [Netslices] Preliminary charter text for discussion References: <1517163726.4051.23.camel@it.uc3m.es> <20180130043352.GB15400@spectre> <1517307927.3201.7.camel@it.uc3m.es> <49297C39-EF21-4D3E-898B-4728B61221BB@huawei.com> In-Reply-To: Mime-version: 1.0 Content-type: multipart/alternative; boundary="B_3600173369_1764735470" Archived-At: Subject: Re: [Netslices] Preliminary charter text for discussion X-BeenThere: netslices@ietf.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: "This list is intended for discussion and review of network slicing at IETF." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 30 Jan 2018 21:09:35 -0000 > This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. --B_3600173369_1764735470 Content-type: text/plain; charset="UTF-8" Content-transfer-encoding: quoted-printable Hi, =20 I don=E2=80=99t think this is right thing to do, device models would be number of= layers below where you=E2=80=99d be operating. You might use draft-ietf-opsawg-service-model-explained as a reference. =20 Cheers, Jeff From: Netslices on behalf of Xavier de Foy Date: Tuesday, January 30, 2018 at 15:44 To: "Kiran.Makhijani" Cc: Pedro Martinez-Julia , "NetSlices@ietf.org" , Carlos Jes=C3=BAs Bernardos Cano Subject: Re: [Netslices] Preliminary charter text for discussion =20 Thanks Kiran, yes, I think one example is draft-homma-coms-slice-gateway, w= hich looks at the technology-independent requirements on some data plane equ= ipment. One interest of this is to help determine the appropriate abstractio= ns and attributes to use in the models. Your wording looks good but I guess we can wait a bit longer for other comm= ents (here on the list and during tomorrow's COMS proponents meeting). Best Regards, Xavier. =20 On Tue, Jan 30, 2018 at 1:45 PM, Kiran.Makhijani wrote: Xavier, This statement may need some additional clarity. =E2=80=9CStudy the mappings of technology independent network equipment configura= tions derived from the information model towards specific technologies and c= oordination with relevant WGs as needed.=E2=80=9D =20 I think what you are trying to say is that equipment configurations may nee= d some work to provide slices related capabilities and support. Am I correct= ? If yes, then instead of use of =E2=80=9Cstudy=E2=80=9D, we could say something to the e= ffect =E2=80=9CIdentify and derive technology-independent network equipment config= urations from the Information model in coordination with relevant WGs as nee= ded=E2=80=9D. This shows a clear deliverable. =20 -Kiran From: Netslices on behalf of Xavier de Foy Date: Tuesday, January 30, 2018 at 7:22 AM To: Carlos Jes=C3=BAs Bernardos Cano Cc: Pedro Martinez-Julia , "NetSlices@ietf.org" Subject: Re: [Netslices] Preliminary charter text for discussion =20 Thanks for clarifying the text Pedro. For reference and as base for future = comments, here is a fixed version of the full text with your wording. Regards, Xavier. I. Context A network slice is a set of related infrastructure resources and service fu= nctions with qualities that respond to specific requirements, being able to = cross multiple domains and use heterogeneous technologies. The goal of this = group is to produce and promote a technology-independent and resource-centri= c management plane for network slices. Resources associated with a network s= lice are normally comprised of physical and logical connections in access, a= ggregation and backbone networks as well as computing and storage elements. = Service functions associated with a network slice include network functions = and network function chains pre-defined using corresponding network infrastr= ucture elements. A "Network Slice" is realized using a collection of technologies spanning a= cross data, control and management planes. Many of them rely on existing IET= F technologies including both concluded and in-progress works such as: - Data plane: DetNet, TE-Tunnels, MPLS, Segment Routing VPNs, NVO3 etc. - Controller and/or control plane: ACTN, PCE and RSVP-TE (requiring LDP, BG= P, OSPF awareness at level below) etc. - Management plane: YANG, OAM etc. The foundation of COMS is a technology-independent and resource-centric man= agement plane. In reality, the network slice provider may have diverse techn= ology choices in different domains due to geographical and commercial reason= s. Therefore, COMS makes no assumption on which technology is used for speci= fic domains. The goal of COMS is to define a common and inter-operative mana= gement mechanism, which is essential for the concept of network slicing bein= g adopted in a system with heterogeneous network infrastructures and service= s functions. Major characteristics include: - Enabling composition of slices within a single or over multiple domains. - Allowing the operation and management of a network slice in a uniform man= ner, even when this network slice span multiple technology and/or administra= tive domains. - Enabling deployment of services over individual slices. II. Scope The WG will describe an overall architecture for network slicing. To manage= network slices in a technology-independent manner, the network slice provid= er (NSP) will need to communicate with a network slice orchestrator (NSO) ov= er a COMS Service Delivery Interface (SDI). The COMS SDI can also be used be= tween network slice orchestrators, enabling hierarchical management through = the notion of network slice subnets. Network slices will be leased to tenant= s, which will be able to use Customer Service Interface (CSI) exposed by the= NS provider to run management tasks (e.g., on-demand measurement) within th= eir slice instance under certain policies. The WG will describe an information model representing a network slice, acc= ounting for the key elements used in network slices: connectivity, compute, = storage resources, network and service functions =E2=80=94 this information model = includes the representation of managed objects and corresponding management = and operations, will guide the design of data models on SDI and CSI and also= will enable orchestrators interworking. The WG will specify requirements, operations and management functionalities= on network slicing interfaces SDI and/or CSI including: 1 Network slice service profile, e.g. set by NSP over SDI, including high-l= evel parameters for network infrastructures and service functions, together = with their corresponding performance requirements. 2 Lifecycle management of network slice. 3 Other FCAPS functions. An important task of NSP is to aggregate faults, p= erformance, status information and performance guarantees for certain servic= es. 4 Slice composition or stitching in multi-domain environment. 5 Slice management by the tenant under the control of NSP, including deploy= ing network services over a slice. The WG will specify requirements and functionalities of data plane entities= as needed to enable the management of network slices. For example, this may= include abstractions of policy control and enforcement, or gateway function= alities. The WG will also study the mapping between the abstract information= model and managed entities, and will liaise with other IETF WGs as needed. = However, the WG will not attempt to replicate data plane technologies includ= ing DetNet, TE-Tunnels, MPLS, Segment Routing VPNs, NVO3 etc. III. Deliverables WG deliverables are listed below and may be split in any number of document= s as determined by the WG: - Problem statement and use cases for management of network slices. - Architecture of network slices. - Information model(s) and operations for network slices on topics describe= d above in the scope section. - SDI and CSI interface specifications and relevant YANG models. - Study the mappings of technology independent network equipment configurat= ions derived from the information model towards specific technologies and co= ordination with relevant WGs as needed. IV. Milestones Dec 2018 Problem Statement, use cases and architecture Dec 2018 Common information model and related YANG model June 2019 Network slices composition and interworking October 2019 FCAPS management functions and operations on network=20 slices including abstractions of policy control and=20 enforcement, or gateway functionalities. March 2020 SDI and CSI interface specifications and relevant YANG models=20 =20 _______________________________________________ Netslices mailing list Nets= lices@ietf.org https://www.ietf.org/mailman/listinfo/netslices=20 --B_3600173369_1764735470 Content-type: text/html; charset="UTF-8" Content-transfer-encoding: quoted-printable

Hi,

 

I don=E2=80=99t think this is right thing to do, device= models would be number of layers below where you=E2=80=99d be operating.

You might use draft-ietf-opsawg-service-model-expla= ined as a reference.

 

<= div>

Cheers,

Jeff<= /p>

Fr= om: Netslices <nets= lices-bounces@ietf.org> on behalf of Xavier de Foy <x.defoy.ietf@gmail= .com>
Date: Tuesday, January 30, 2018 at 15:44
To: &q= uot;Kiran.Makhijani" <Kiran.Makhijani@huawei.com>
Cc: P= edro Martinez-Julia <pedro@nict.go.jp>, "NetSlices@ietf.org"= <NetSlices@ietf.org>, Carlos Jes=C3=BAs Bernardos Cano <cjbc@it.uc3m.e= s>
Subject: Re: [Netslices] Preliminary charter text for discus= sion

 

 

On Tue, Jan 30, = 2018 at 1:45 PM, Kiran.Makhijani <Kir= an.Makhijani@huawei.com<= /span>> wrote:

Xavier,

This statement may need some additional clari= ty.

=E2=80=9CStudy the mappings of technology independent network equipment conf= igurations derived from the information model towards specific technologies = and coordination with relevant WGs as needed.=E2=80=9D

 

= I think what you are trying to say is th= at equipment configurations may need some work to provide slices related cap= abilities and support. Am I correct?

If yes, then instead of use of =E2=80=9Cstudy=E2=80=9D, we co= uld say something to the effect =E2=80=9CIdentify and derive technology-independen= t network equipment configurations from the Information model in coordinatio= n with relevant WGs as needed=E2=80=9D. This shows a clear deliverable.

 

-Kiran

From: Netslices <<= a href=3D"mailto:netslices-bounces@ietf.org" target=3D"_blank">netslices-bounces= @ietf.org<= /a>> on behalf of Xavier de Foy <x.defoy.ietf@gmail.com>= ;
Date: Tuesday, January 30, 2018 at 7:22 AM
To: Carlos = Jes=C3=BAs Bernardos Cano <cjbc@it.uc3m.es>
Cc: Pedro Martinez-Julia &l= t;pedro@nict= .go.jp= >, "NetSlices@ietf.org" <NetSlices@ietf.org>
Su= bject: Re: [Netslices] Preliminary charter text for discussion

 

Xa= vier.


I. Context

A network slice is a set of related= infrastructure resources and service functions with qualities that respond = to specific requirements, being able to cross multiple domains and use heter= ogeneous technologies. The goal of this group is to produce and promote a te= chnology-independent and resource-centric management plane for network slice= s. Resources associated with a network slice are normally comprised of physi= cal and logical connections in acces= s, aggregation and backbone networks as well as computing and storage elemen= ts. Service functions associated with a network slice include network functi= ons and network function chains pre-defined using corresponding network infr= astructure elements.

A "Network Slice" is realized u= sing a collection of technologies spanning across data, control and manageme= nt planes. Many of them rely on existing IETF technologies including both co= ncluded and in-progress works such as:
- Data plane: DetNet, TE-Tunnels, = MPLS, Segment Routing VPNs, NVO3 etc.
- Controller and/or control plane: = ACTN, PCE and RSVP-TE (requiring LDP, BGP, OSPF awareness at level below) et= c.
- Management plane: YANG, OAM etc.

The foundation of COMS is a = technology-independent and resource-centric management plane. In reality, th= e network slice provider may have diverse technology choices in different do= mains due to geographical and commercial reasons. Therefore, COMS makes no a= ssumption on which technology is used for specific domains. The goal of COMS= is to define a common and inter-operative management mechanism, which is es= sential for the concept of network slicing being adopted in a system with he= terogeneous network infrastructures and services functions. Major characteri= stics include:
- Enabling composition of slices within a single or over m= ultiple domains.
- Allowing the operation and management of a network sli= ce in a uniform manner, even when this network slice span multiple technolog= y and/or administrative domains.
- Enabling deployment of services over i= ndividual slices.

II. Scope

The WG will describe an overall ar= chitecture for network slicing. To manage network slices in a technology-ind= ependent manner, the network slice provider (NSP) will need to communicate w= ith a network slice orchestrator (NSO) over a COMS Service Delivery Interfac= e (SDI). The COMS SDI can also be used between network slice orchestrators, = enabling hierarchical management through the notion of network slice subnets= . Network slices will be leased to tenants, which will be able to use Custom= er Service Interface (CSI) exposed by the NS provider to run management task= s (e.g., on-demand measurement) within their slice instance under certain po= licies.

The WG will describe an information model representing a netw= ork slice, accounting for the key elements used in network slices: connectiv= ity, compute, storage resources, network and service functions =E2=80=94 this info= rmation model includes the representation of managed objects and correspondi= ng management and operations, will guide the design of data models on SDI an= d CSI and also will enable orchestrators interworking.

The WG will sp= ecify requirements, operations and management functionalities on network sli= cing interfaces SDI and/or CSI including:
1 Network slice service profile= , e.g. set by NSP over SDI, including high-level parameters for network infr= astructures and service functions, together with their corresponding perform= ance requirements.
2 Lifecycle management of network slice.
3 Other FC= APS functions. An important task of NSP is to aggregate faults, performance,= status information and performance guarantees for certain services.
4 Sl= ice composition or stitching in multi-domain environment.
5 Slice managem= ent by the tenant under the control of NSP, including deploying network serv= ices over a slice.

The WG will specify requirements and functionaliti= es of data plane entities as needed to enable the management of network slic= es. For example, this may include abstractions of policy control and enforce= ment, or gateway functionalities. The WG will also study the mapping between= the abstract information model and managed entities, and will liaise with o= ther IETF WGs as needed. However, the WG will not attempt to replicate data = plane technologies including DetNet, TE-Tunnels, MPLS, Segment Routing VPNs,= NVO3 etc.

III. Deliverables

WG deliverables are listed below = and may be split in any number of documents as determined by the WG:
- Pr= oblem statement and use cases for management of network slices.
- Archite= cture of network slices.
- Information model(s) and operations for networ= k slices on topics described above in the scope section.
- SDI and CSI in= terface specifications and relevant YANG models.
- Study the mappings of = technology independent network equipment configurations derived from the inf= ormation model towards specific technologies and coordination with relevant = WGs as needed.

IV. Milestones

Dec 2018    = Problem Statement, use cases and architecture
Dec 2018   =   Common information model and related YANG model
June 2019 &nb= sp;  Network slices composition and interworking
October 2019 FCAPS = management functions and operations on network
    &= nbsp;        slices including abstraction= s of policy control and
        =      enforcement, or gateway functionalities.
March 2= 020   SDI and CSI interface specifications and relevant YANG model= s

 

_______________________________________________ Netslices= mailing list Netslices@ietf.org https://www.ietf.org/mailman/listinfo/netsl= ices

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X-OriginatorOrg: ucl.ac.uk X-MS-Exchange-CrossTenant-OriginalArrivalTime: 31 Jan 2018 09:53:16.7365 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: fd4249a8-f38d-45e5-f6e1-08d5689074ea X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 1faf88fe-a998-4c5b-93c9-210a11d9a5c2 X-MS-Exchange-Transport-CrossTenantHeadersStamped: HE1PR0101MB2345 Archived-At: Subject: Re: [Netslices] Preliminary charter text for discussion X-BeenThere: netslices@ietf.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: "This list is intended for discussion and review of network slicing at IETF." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 31 Jan 2018 09:57:55 -0000 --Apple-Mail=_8CAF9FD7-66AF-4BEE-BAAC-DD8205DF7A15 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=utf-8 Hi Jeff and All Thank you Jeff for your detailed observation. I am with Jeff on the issue of device models which are outside the scope = of COMS area as COMS (Common Operations and Management on Network = Slices) focuses exclusively on slice-level operations and management of = the network resources (i.e. not device resources) associated with a = network slice. We will review this item and would edit/ finalise accordingly the = charter at today=E2=80=99s COMS proponents meeting. Best Cheers and Regards=20 Alex =20 > On 31 Jan 2018, at 07:53, qiangli (D) wrote: >=20 > Hi Jeff, > =20 > I think we may understand this sentence from another perspective. As = you said, there are a number of network/device configuration models, and = their extension/mapping work is better to be done in corresponding WGs. = For those technologies that are not chartered by relevant WGs, the = mapping/extension work could be done in COMS if needed. What do you = think? > =20 > Best regards, > Cristina QIANG > =20 > From: Netslices [mailto:netslices-bounces@ietf.org = ] On Behalf Of Jeff Tantsura > Sent: Wednesday, January 31, 2018 5:09 AM > To: Xavier de Foy >; Kiran.Makhijani = > > Cc: Pedro Martinez-Julia >; = Carlos Jes=C3=BAs Bernardos Cano >; NetSlices@ietf.org = > Subject: Re: [Netslices] Preliminary charter text for discussion > =20 > Hi, > =20 > I don=E2=80=99t think this is right thing to do, device models would = be number of layers below where you=E2=80=99d be operating. > You might use draft-ietf-opsawg-service-model-explained as a = reference. > =20 > Cheers, > Jeff > From: Netslices > on behalf of Xavier de Foy = > > Date: Tuesday, January 30, 2018 at 15:44 > To: "Kiran.Makhijani" > > Cc: Pedro Martinez-Julia >, = "NetSlices@ietf.org " >, Carlos Jes=C3=BAs Bernardos Cano = > > Subject: Re: [Netslices] Preliminary charter text for discussion > =20 > Thanks Kiran, yes, I think one example is = draft-homma-coms-slice-gateway, which looks at the = technology-independent requirements on some data plane equipment. One = interest of this is to help determine the appropriate abstractions and = attributes to use in the models. <> > Your wording looks good but I guess we can wait a bit longer for other = comments (here on the list and during tomorrow's COMS proponents = meeting). > Best Regards, > Xavier. > =20 > On Tue, Jan 30, 2018 at 1:45 PM, Kiran.Makhijani = > wrote: > Xavier, > This statement may need some additional clarity. > =E2=80=9CStudy the mappings of technology independent network = equipment configurations derived from the information model towards = specific technologies and coordination with relevant WGs as needed.=E2=80=9D= > =20 > I think what you are trying to say is that equipment configurations = may need some work to provide slices related capabilities and support. = Am I correct? > If yes, then instead of use of =E2=80=9Cstudy=E2=80=9D, we could say = something to the effect =E2=80=9CIdentify and derive = technology-independent network equipment configurations from the = Information model in coordination with relevant WGs as needed=E2=80=9D. = This shows a clear deliverable. > =20 > -Kiran > From: Netslices > on behalf of Xavier de Foy = > > Date: Tuesday, January 30, 2018 at 7:22 AM > To: Carlos Jes=C3=BAs Bernardos Cano > > Cc: Pedro Martinez-Julia >, = "NetSlices@ietf.org " > > Subject: Re: [Netslices] Preliminary charter text for discussion > =20 > Thanks for clarifying the text Pedro. For reference and as base for = future comments, here is a fixed version of the full text with your = wording. <> > Regards, > Xavier. >=20 > I. Context >=20 > A network slice is a set of related infrastructure resources and = service functions with qualities that respond to specific requirements, = being able to cross multiple domains and use heterogeneous technologies. = The goal of this group is to produce and promote a = technology-independent and resource-centric management plane for network = slices. Resources associated with a network slice are normally comprised = of physical and logical connections in access, aggregation and backbone = networks as well as computing and storage elements. Service functions = associated with a network slice include network functions and network = function chains pre-defined using corresponding network infrastructure = elements. >=20 > A "Network Slice" is realized using a collection of technologies = spanning across data, control and management planes. Many of them rely = on existing IETF technologies including both concluded and in-progress = works such as: > - Data plane: DetNet, TE-Tunnels, MPLS, Segment Routing VPNs, NVO3 = etc. > - Controller and/or control plane: ACTN, PCE and RSVP-TE (requiring = LDP, BGP, OSPF awareness at level below) etc. > - Management plane: YANG, OAM etc. >=20 > The foundation of COMS is a technology-independent and = resource-centric management plane. In reality, the network slice = provider may have diverse technology choices in different domains due to = geographical and commercial reasons. Therefore, COMS makes no assumption = on which technology is used for specific domains. The goal of COMS is to = define a common and inter-operative management mechanism, which is = essential for the concept of network slicing being adopted in a system = with heterogeneous network infrastructures and services functions. Major = characteristics include: > - Enabling composition of slices within a single or over multiple = domains. > - Allowing the operation and management of a network slice in a = uniform manner, even when this network slice span multiple technology = and/or administrative domains. > - Enabling deployment of services over individual slices. >=20 > II. Scope >=20 > The WG will describe an overall architecture for network slicing. To = manage network slices in a technology-independent manner, the network = slice provider (NSP) will need to communicate with a network slice = orchestrator (NSO) over a COMS Service Delivery Interface (SDI). The = COMS SDI can also be used between network slice orchestrators, enabling = hierarchical management through the notion of network slice subnets. = Network slices will be leased to tenants, which will be able to use = Customer Service Interface (CSI) exposed by the NS provider to run = management tasks (e.g., on-demand measurement) within their slice = instance under certain policies. >=20 > The WG will describe an information model representing a network = slice, accounting for the key elements used in network slices: = connectivity, compute, storage resources, network and service functions = =E2=80=94 this information model includes the representation of managed = objects and corresponding management and operations, will guide the = design of data models on SDI and CSI and also will enable orchestrators = interworking. >=20 > The WG will specify requirements, operations and management = functionalities on network slicing interfaces SDI and/or CSI including: > 1 Network slice service profile, e.g. set by NSP over SDI, including = high-level parameters for network infrastructures and service functions, = together with their corresponding performance requirements. > 2 Lifecycle management of network slice. > 3 Other FCAPS functions. An important task of NSP is to aggregate = faults, performance, status information and performance guarantees for = certain services. > 4 Slice composition or stitching in multi-domain environment. > 5 Slice management by the tenant under the control of NSP, including = deploying network services over a slice. >=20 > The WG will specify requirements and functionalities of data plane = entities as needed to enable the management of network slices. For = example, this may include abstractions of policy control and = enforcement, or gateway functionalities. The WG will also study the = mapping between the abstract information model and managed entities, and = will liaise with other IETF WGs as needed. However, the WG will not = attempt to replicate data plane technologies including DetNet, = TE-Tunnels, MPLS, Segment Routing VPNs, NVO3 etc. >=20 > III. Deliverables >=20 > WG deliverables are listed below and may be split in any number of = documents as determined by the WG: > - Problem statement and use cases for management of network slices. > - Architecture of network slices. > - Information model(s) and operations for network slices on topics = described above in the scope section. > - SDI and CSI interface specifications and relevant YANG models. > - Study the mappings of technology independent network equipment = configurations derived from the information model towards specific = technologies and coordination with relevant WGs as needed. >=20 > IV. Milestones >=20 > Dec 2018 Problem Statement, use cases and architecture > Dec 2018 Common information model and related YANG model > June 2019 Network slices composition and interworking > October 2019 FCAPS management functions and operations on network=20 > slices including abstractions of policy control and=20 > enforcement, or gateway functionalities. > March 2020 SDI and CSI interface specifications and relevant YANG = models=20 >=20 > =20 > _______________________________________________ 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 = --Apple-Mail=_8CAF9FD7-66AF-4BEE-BAAC-DD8205DF7A15 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=utf-8 Hi = Jeff and All

Thank you Jeff for = your detailed observation.

I am with Jeff on the issue of device models which are outside the scope of COMS area as COMS (Common = Operations and Management on Network Slices) focuses exclusively on slice-level = operations and management of the network resources (i.e. not device resources) = associated with a network slice.

We will review this item and would edit/ finalise accordingly the charter at today=E2=80=99s COMS proponents = meeting.

Best Cheers and Regards 

Alex     


On 31 Jan 2018, at 07:53, = qiangli (D) <qiangli3@huawei.com> wrote:

Hi Jeff,
 
I think we may understand this sentence from another = perspective. As you said, there are a number of network/device = configuration models, and their extension/mapping work is better to be = done in corresponding WGs. For those technologies that are not chartered = by relevant WGs, the mapping/extension work could be done in COMS if = needed. What do you think?
 
Best regards,
Cristina QIANG
 
From: Netslices [mailto:netslices-bounces@ietf.org] On Behalf = Of Jeff = Tantsura
Sent: Wednesday, January 31, 2018 = 5:09 AM
To: Xavier de Foy <x.defoy.ietf@gmail.com>; = Kiran.Makhijani <Kiran.Makhijani@huawei.com>
Cc: Pedro Martinez-Julia <pedro@nict.go.jp>; Carlos = Jes=C3=BAs Bernardos Cano <cjbc@it.uc3m.es>; NetSlices@ietf.org
Subject: Re: [Netslices] Preliminary = charter text for discussion
 
Hi,
 
I don=E2=80=99t = think this is right thing to do, device models would be number of layers = below where you=E2=80=99d be operating.
You might use = draft-ietf-opsawg-service-model-explained as a reference.
 
Cheers,
Jeff
From: Netslices <netslices-bounces@ietf.org> on behalf of Xavier de Foy = <x.defoy.ietf@gmail.com>
Date: Tuesday, January 30, = 2018 at 15:44
To: "Kiran.Makhijani" = <Kiran.Makhijani@huawei.com>
Cc: Pedro Martinez-Julia = <pedro@nict.go.jp>, "NetSlices@ietf.org" <NetSlices@ietf.org>, Carlos Jes=C3=BAs Bernardos Cano <cjbc@it.uc3m.es>
Subject: Re: [Netslices] = Preliminary charter text for discussion
 
Thanks Kiran, yes, I think one example is = draft-homma-coms-slice-gateway, which looks at the = technology-independent requirements on some data plane equipment. One = interest of this is to help determine the appropriate abstractions and = attributes to use in the models.
Your wording looks = good but I guess we can wait a bit longer for other comments (here on = the list and during tomorrow's COMS proponents meeting).
Best Regards,
Xavier.
 
On Tue, = Jan 30, 2018 at 1:45 PM, Kiran.Makhijani <Kiran.Makhijani@huawei.com> wrote:
Xavier,
This statement may need some additional clarity.
=E2=80=9CStudy the mappings of technology independent network = equipment configurations derived from the information model towards = specific technologies and coordination with relevant WGs as = needed.=E2=80=9D
 
I think what you are trying to say is that equipment = configurations may need some work to provide slices related capabilities = and support. Am I correct?
If yes, then instead of use of =E2=80=9Cstudy=E2=80=9D, we = could say something to the effect =E2=80=9CIdentify and derive = technology-independent network equipment configurations from the = Information model in coordination with relevant WGs as needed=E2=80=9D. = This shows a clear deliverable.
 
-Kiran
From: Netslices <netslices-bounces@ietf.org> on behalf of Xavier de Foy <x.defoy.ietf@gmail.com>
Date: Tuesday, January 30, = 2018 at 7:22 AM
To: Carlos Jes=C3=BAs = Bernardos Cano <cjbc@it.uc3m.es>
Cc: Pedro Martinez-Julia = <pedro@nict.go.jp>, "NetSlices@ietf.org" = <NetSlices@ietf.org>
Subject: Re: [Netslices] = Preliminary charter text for discussion
 
Thanks for clarifying the text Pedro. For = reference and as base for future comments, here is a fixed version of = the full text with your wording.
Regards,
Xavier.


I. Context

A network slice is a set of related = infrastructure resources and service functions with qualities that = respond to specific requirements, being able to cross multiple domains = and use heterogeneous technologies. The goal of this group is to produce = and promote a technology-independent and resource-centric management = plane for network slices. Resources associated with a network slice are = normally comprised of physical and logical connections in access, = aggregation and backbone networks as well as computing and storage = elements. Service functions associated with a network slice include = network functions and network function chains pre-defined using = corresponding network infrastructure elements.

A "Network Slice" is realized using a collection of = technologies spanning across data, control and management planes. Many = of them rely on existing IETF technologies including both concluded and = in-progress works such as:
- Data plane: DetNet, = TE-Tunnels, MPLS, Segment Routing VPNs, NVO3 etc.
- = Controller and/or control plane: ACTN, PCE and RSVP-TE (requiring LDP, = BGP, OSPF awareness at level below) etc.
- Management = plane: YANG, OAM etc.

The foundation of = COMS is a technology-independent and resource-centric management plane. = In reality, the network slice provider may have diverse technology = choices in different domains due to geographical and commercial reasons. = Therefore, COMS makes no assumption on which technology is used for = specific domains. The goal of COMS is to define a common and = inter-operative management mechanism, which is essential for the concept = of network slicing being adopted in a system with heterogeneous network = infrastructures and services functions. Major characteristics = include:
- Enabling composition of slices within a single = or over multiple domains.
- Allowing the operation and = management of a network slice in a uniform manner, even when this = network slice span multiple technology and/or administrative domains.
- Enabling deployment of services over individual slices.

II. Scope

The WG = will describe an overall architecture for network slicing. To manage = network slices in a technology-independent manner, the network slice = provider (NSP) will need to communicate with a network slice = orchestrator (NSO) over a COMS Service Delivery Interface (SDI). The = COMS SDI can also be used between network slice orchestrators, enabling = hierarchical management through the notion of network slice subnets. = Network slices will be leased to tenants, which will be able to use = Customer Service Interface (CSI) exposed by the NS provider to run = management tasks (e.g., on-demand measurement) within their slice = instance under certain policies.

The WG = will describe an information model representing a network slice, = accounting for the key elements used in network slices: connectivity, = compute, storage resources, network and service functions =E2=80=94 this = information model includes the representation of managed objects and = corresponding management and operations, will guide the design of data = models on SDI and CSI and also will enable orchestrators = interworking.

The WG will specify = requirements, operations and management functionalities on network = slicing interfaces SDI and/or CSI including:
1 Network = slice service profile, e.g. set by NSP over SDI, including high-level = parameters for network infrastructures and service functions, together = with their corresponding performance requirements.
2 = Lifecycle management of network slice.
3 Other FCAPS = functions. An important task of NSP is to aggregate faults, performance, = status information and performance guarantees for certain services.
4 Slice composition or stitching in multi-domain = environment.
5 Slice management by the tenant under the = control of NSP, including deploying network services over a slice.

The WG will specify requirements and = functionalities of data plane entities as needed to enable the = management of network slices. For example, this may include abstractions = of policy control and enforcement, or gateway functionalities. The WG = will also study the mapping between the abstract information model and = managed entities, and will liaise with other IETF WGs as needed. = However, the WG will not attempt to replicate data plane technologies = including DetNet, TE-Tunnels, MPLS, Segment Routing VPNs, NVO3 etc.

III. Deliverables

WG deliverables are listed below and may be split in any = number of documents as determined by the WG:
- Problem = statement and use cases for management of network slices.
- = Architecture of network slices.
- Information model(s) and = operations for network slices on topics described above in the scope = section.
- SDI and CSI interface specifications and = relevant YANG models.
- Study the mappings of technology = independent network equipment configurations derived from the = information model towards specific technologies and coordination with = relevant WGs as needed.

IV. Milestones

Dec 2018     Problem = Statement, use cases and architecture
Dec = 2018     Common information model and related YANG = model
June 2019    Network slices = composition and interworking
October 2019 FCAPS management = functions and operations on network 
          &nb= sp;  slices including abstractions of policy control and 
          &nb= sp;  enforcement, or gateway functionalities.
March = 2020   SDI and CSI interface specifications and relevant YANG = models 

 
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List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 31 Jan 2018 14:52:11 -0000 > This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. --B_3600236892_570116334 Content-type: text/plain; charset="UTF-8" Content-transfer-encoding: quoted-printable Hi Christina, =20 My point =E2=80=93 you should never be dealing with device models directly, irres= pectively of where they were developed.=20 =20 Cheers, Jeff From: "qiangli (D)" Date: Wednesday, January 31, 2018 at 02:53 To: Jeff Tantsura , Xavier de Foy , "Kiran.Makhijani" Cc: Pedro Martinez-Julia , Carlos Jes=C3=BAs Bernardos Cano <= cjbc@it.uc3m.es>, "NetSlices@ietf.org" Subject: RE: [Netslices] Preliminary charter text for discussion =20 Hi Jeff, =20 I think we may understand this sentence from another perspective. As you sa= id, there are a number of network/device configuration models, and their ext= ension/mapping work is better to be done in corresponding WGs. For those tec= hnologies that are not chartered by relevant WGs, the mapping/extension work= could be done in COMS if needed. What do you think? =20 Best regards, Cristina QIANG =20 From: Netslices [mailto:netslices-bounces@ietf.org] On Behalf Of Jeff Tants= ura Sent: Wednesday, January 31, 2018 5:09 AM To: Xavier de Foy ; Kiran.Makhijani Cc: Pedro Martinez-Julia ; Carlos Jes=C3=BAs Bernardos Cano <= cjbc@it.uc3m.es>; NetSlices@ietf.org Subject: Re: [Netslices] Preliminary charter text for discussion =20 Hi, =20 I don=E2=80=99t think this is right thing to do, device models would be number of= layers below where you=E2=80=99d be operating. You might use draft-ietf-opsawg-service-model-explained as a reference. =20 Cheers, Jeff From: Netslices on behalf of Xavier de Foy Date: Tuesday, January 30, 2018 at 15:44 To: "Kiran.Makhijani" Cc: Pedro Martinez-Julia , "NetSlices@ietf.org" , Carlos Jes=C3=BAs Bernardos Cano Subject: Re: [Netslices] Preliminary charter text for discussion =20 Thanks Kiran, yes, I think one example is draft-homma-coms-slice-gateway, w= hich looks at the technology-independent requirements on some data plane equ= ipment. One interest of this is to help determine the appropriate abstractio= ns and attributes to use in the models. Your wording looks good but I guess we can wait a bit longer for other comm= ents (here on the list and during tomorrow's COMS proponents meeting). Best Regards, Xavier. =20 On Tue, Jan 30, 2018 at 1:45 PM, Kiran.Makhijani wrote: Xavier, This statement may need some additional clarity. =E2=80=9CStudy the mappings of technology independent network equipment configura= tions derived from the information model towards specific technologies and c= oordination with relevant WGs as needed.=E2=80=9D =20 I think what you are trying to say is that equipment configurations may nee= d some work to provide slices related capabilities and support. Am I correct= ? If yes, then instead of use of =E2=80=9Cstudy=E2=80=9D, we could say something to the e= ffect =E2=80=9CIdentify and derive technology-independent network equipment config= urations from the Information model in coordination with relevant WGs as nee= ded=E2=80=9D. This shows a clear deliverable. =20 -Kiran From: Netslices on behalf of Xavier de Foy Date: Tuesday, January 30, 2018 at 7:22 AM To: Carlos Jes=C3=BAs Bernardos Cano Cc: Pedro Martinez-Julia , "NetSlices@ietf.org" Subject: Re: [Netslices] Preliminary charter text for discussion =20 Thanks for clarifying the text Pedro. For reference and as base for future = comments, here is a fixed version of the full text with your wording. Regards, Xavier. I. Context A network slice is a set of related infrastructure resources and service fu= nctions with qualities that respond to specific requirements, being able to = cross multiple domains and use heterogeneous technologies. The goal of this = group is to produce and promote a technology-independent and resource-centri= c management plane for network slices. Resources associated with a network s= lice are normally comprised of physical and logical connections in access, a= ggregation and backbone networks as well as computing and storage elements. = Service functions associated with a network slice include network functions = and network function chains pre-defined using corresponding network infrastr= ucture elements. A "Network Slice" is realized using a collection of technologies spanning a= cross data, control and management planes. Many of them rely on existing IET= F technologies including both concluded and in-progress works such as: - Data plane: DetNet, TE-Tunnels, MPLS, Segment Routing VPNs, NVO3 etc. - Controller and/or control plane: ACTN, PCE and RSVP-TE (requiring LDP, BG= P, OSPF awareness at level below) etc. - Management plane: YANG, OAM etc. The foundation of COMS is a technology-independent and resource-centric man= agement plane. In reality, the network slice provider may have diverse techn= ology choices in different domains due to geographical and commercial reason= s. Therefore, COMS makes no assumption on which technology is used for speci= fic domains. The goal of COMS is to define a common and inter-operative mana= gement mechanism, which is essential for the concept of network slicing bein= g adopted in a system with heterogeneous network infrastructures and service= s functions. Major characteristics include: - Enabling composition of slices within a single or over multiple domains. - Allowing the operation and management of a network slice in a uniform man= ner, even when this network slice span multiple technology and/or administra= tive domains. - Enabling deployment of services over individual slices. II. Scope The WG will describe an overall architecture for network slicing. To manage= network slices in a technology-independent manner, the network slice provid= er (NSP) will need to communicate with a network slice orchestrator (NSO) ov= er a COMS Service Delivery Interface (SDI). The COMS SDI can also be used be= tween network slice orchestrators, enabling hierarchical management through = the notion of network slice subnets. Network slices will be leased to tenant= s, which will be able to use Customer Service Interface (CSI) exposed by the= NS provider to run management tasks (e.g., on-demand measurement) within th= eir slice instance under certain policies. The WG will describe an information model representing a network slice, acc= ounting for the key elements used in network slices: connectivity, compute, = storage resources, network and service functions =E2=80=94 this information model = includes the representation of managed objects and corresponding management = and operations, will guide the design of data models on SDI and CSI and also= will enable orchestrators interworking. The WG will specify requirements, operations and management functionalities= on network slicing interfaces SDI and/or CSI including: 1 Network slice service profile, e.g. set by NSP over SDI, including high-l= evel parameters for network infrastructures and service functions, together = with their corresponding performance requirements. 2 Lifecycle management of network slice. 3 Other FCAPS functions. An important task of NSP is to aggregate faults, p= erformance, status information and performance guarantees for certain servic= es. 4 Slice composition or stitching in multi-domain environment. 5 Slice management by the tenant under the control of NSP, including deploy= ing network services over a slice. The WG will specify requirements and functionalities of data plane entities= as needed to enable the management of network slices. For example, this may= include abstractions of policy control and enforcement, or gateway function= alities. The WG will also study the mapping between the abstract information= model and managed entities, and will liaise with other IETF WGs as needed. = However, the WG will not attempt to replicate data plane technologies includ= ing DetNet, TE-Tunnels, MPLS, Segment Routing VPNs, NVO3 etc. III. Deliverables WG deliverables are listed below and may be split in any number of document= s as determined by the WG: - Problem statement and use cases for management of network slices. - Architecture of network slices. - Information model(s) and operations for network slices on topics describe= d above in the scope section. - SDI and CSI interface specifications and relevant YANG models. - Study the mappings of technology independent network equipment configurat= ions derived from the information model towards specific technologies and co= ordination with relevant WGs as needed. IV. Milestones Dec 2018 Problem Statement, use cases and architecture Dec 2018 Common information model and related YANG model June 2019 Network slices composition and interworking October 2019 FCAPS management functions and operations on network=20 slices including abstractions of policy control and=20 enforcement, or gateway functionalities. March 2020 SDI and CSI interface specifications and relevant YANG models=20 =20 _______________________________________________ Netslices mailing list Nets= lices@ietf.org https://www.ietf.org/mailman/listinfo/netslices=20 --B_3600236892_570116334 Content-type: text/html; charset="UTF-8" Content-transfer-encoding: quoted-printable

Hi Christina,

 

My point =E2=80=93 you should never be dealin= g with device models directly, irrespectively of where they were developed. =

 

Cheers,

Jeff

From: "qiangli (D)" <qiangli3@h= uawei.com>
Date: Wednesday, January 31, 2018 at 02:53
To:= Jeff Tantsura <jefftant.ietf@gmail.com>, Xavier de Foy <x.defo= y.ietf@gmail.com>, "Kiran.Makhijani" <Kiran.Makhijani@huawei= .com>
Cc: Pedro Martinez-Julia <pedro@nict.go.jp>, Carlos= Jes=C3=BAs Bernardos Cano <cjbc@it.uc3m.es>, "NetSlices@ietf.org&quo= t; <NetSlices@ietf.org>
Subject: RE: [Netslices] Preliminary= charter text for discussion

 

Hi Jeff,

 

I think we may understa= nd this sentence from another perspective. As you said, there are a number o= f network/device configuration models, and their extension/mapping work is b= etter to be done in corresponding WGs. For those technologies that are not c= hartered by relevant WGs, the mapping/extension work could be done in COMS i= f needed. What do you think?

 

Best regards,

Cristina QIANG

 

From: Netslices [mailto:netslices-bounces@ietf.org] On Beha= lf Of Jeff Tantsura
Sent: Wednesday, January 31, 2018 5:09 AM<= br>To: Xavier de Foy <x.defoy.ietf@gmail.com>; Kiran.Makhijani = <Kiran.Makhijani@huawei.com>
Cc: Pedro Martinez-Julia <pe= dro@nict.go.jp>; Carlos Jes=C3=BAs Bernardos Cano <cjbc@it.uc3m.es>; Ne= tSlices@ietf.org
Subject: Re: [Netslices] Preliminary charter text= for discussion

 

Hi,

 

I don=E2=80=99t think this is right thing to do, device = models would be number of layers below where you=E2=80=99d be operating.

You might use draft-ietf-opsawg-service-model-explai= ned as a reference.

 

Cheers,

Jeff

Fro= m: Netslices <netslices-bounces@ietf.org> on behalf of Xavier de Foy <x.defoy.ietf@gmail.com= >
Date: Tuesday, Jan= uary 30, 2018 at 15:44
To: "Kiran.Makhijani" <= K= iran.Makhijani@huawei.com>
Cc: Pedro Martinez-Julia <pedro@nict.go.jp>, "NetSlices@ietf.org= " <NetSlices@ietf.org>, Carlos Jes=C3=BAs Bernardo= s Cano <cjbc@it.uc3m.es&= gt;
Subject: Re: [Netslices] Preliminary charter text for discussi= on

 

<= /div>

 

On Tue, Jan 30, 20= 18 at 1:45 PM, Kiran.Makhijani <Kiran= .Makhijani@huawei.com> wrote:<= /span>

Xavier,<= /span>

<= span style=3D'font-family:"Calibri Light",sans-serif;color:#0070C0'>This state= ment may need some additional clarity.

=E2=80=9CStudy the mappings of technology= independent network equipment configurations derived from the information m= odel towards specific technologies and coordination with relevant WGs as nee= ded.=E2=80=9D

&n= bsp;

I thi= nk what you are trying to say is that equipment configurations may need some= work to provide slices related capabilities and support. Am I correct?

If yes, then i= nstead of use of =E2=80=9Cstudy=E2=80=9D, we could say something to the effect =E2=80=9CIdenti= fy and derive technology-independent network equipment configurations from t= he Information model in coordination with relevant WGs as needed=E2=80=9D. This sh= ows a clear deliverable.

 

-Kiran

= From: Netslices <netslices-bounces@ietf.org> on behalf of Xavier d= e Foy <x.defoy.ietf@gmail.com>
Date: Tuesday, January 30, 20= 18 at 7:22 AM
To: Carlos Jes=C3=BAs Bernardos Cano <<= a href=3D"mailto:cjbc@it.uc3m.es" target=3D"_blank">cjbc@it.uc3m.es>Cc: Pedro Martinez-Julia <pedro@nict.go.jp>, "NetSlices@ietf.org&qu= ot; <Ne= tSlices@ietf.org<= /span>>
Subject: Re: [Netslices] Preliminary ch= arter text for discussion

<= p class=3DMsoNormal style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;= margin-left:.5in'> 

Xavier.


I. Context

= A network slice is a set of related infrastructure resources and service fun= ctions with qualities that respond to specific requirements, being able to c= ross multiple domains and use heterogeneous technologies. The goal of this g= roup is to produce and promote a technology-independent and resource-centric= management plane for network slices. Resources associated with a network sl= ice are normally comprised of physical and logical connections in access, aggregation and backbone networks as w= ell as computing and storage elements. Service functions associated with a n= etwork slice include network functions and network function chains pre-defin= ed using corresponding network infrastructure elements.

A &quo= t;Network Slice" is realized using a collection of technologies spannin= g across data, control and management planes. Many of them rely on existing = IETF technologies including both concluded and in-progress works such as:- Data plane: DetNet, TE-Tunnels, MPLS, Segment Routing VPNs, NVO3 etc.
= - Controller and/or control plane: ACTN, PCE and RSVP-TE (requiring LDP, BGP= , OSPF awareness at level below) etc.
- Management plane: YANG, OAM etc.<= br>
The foundation of COMS is a technology-independent and resource-centr= ic management plane. In reality, the network slice provider may have diverse= technology choices in different domains due to geographical and commercial = reasons. Therefore, COMS makes no assumption on which technology is used for= specific domains. The goal of COMS is to define a common and inter-operativ= e management mechanism, which is essential for the concept of network slicin= g being adopted in a system with heterogeneous network infrastructures and s= ervices functions. Major characteristics include:
- Enabling composition = of slices within a single or over multiple domains.
- Allowing the operat= ion and management of a network slice in a uniform manner, even when this ne= twork slice span multiple technology and/or administrative domains.
- Ena= bling deployment of services over individual slices.

II. Scope
The WG will describe an overall architecture for network slicing. To manage= network slices in a technology-independent manner, the network slice provid= er (NSP) will need to communicate with a network slice orchestrator (NSO) ov= er a COMS Service Delivery Interface (SDI). The COMS SDI can also be used be= tween network slice orchestrators, enabling hierarchical management through = the notion of network slice subnets. Network slices will be leased to tenant= s, which will be able to use Customer Service Interface (CSI) exposed by the= NS provider to run management tasks (e.g., on-demand measurement) within th= eir slice instance under certain policies.

The WG will describe an in= formation model representing a network slice, accounting for the key element= s used in network slices: connectivity, compute, storage resources, network = and service functions =E2=80=94 this information model includes the representation= of managed objects and corresponding management and operations, will guide = the design of data models on SDI and CSI and also will enable orchestrators = interworking.

The WG will specify requirements, operations and manage= ment functionalities on network slicing interfaces SDI and/or CSI including:=
1 Network slice service profile, e.g. set by NSP over SDI, including hig= h-level parameters for network infrastructures and service functions, togeth= er with their corresponding performance requirements.
2 Lifecycle managem= ent of network slice.
3 Other FCAPS functions. An important task of NSP i= s to aggregate faults, performance, status information and performance guara= ntees for certain services.
4 Slice composition or stitching in multi-dom= ain environment.
5 Slice management by the tenant under the control of NS= P, including deploying network services over a slice.

The WG will spe= cify requirements and functionalities of data plane entities as needed to en= able the management of network slices. For example, this may include abstrac= tions of policy control and enforcement, or gateway functionalities. The WG = will also study the mapping between the abstract information model and manag= ed entities, and will liaise with other IETF WGs as needed. However, the WG = will not attempt to replicate data plane technologies including DetNet, TE-T= unnels, MPLS, Segment Routing VPNs, NVO3 etc.

III. Deliverables
WG deliverables are listed below and may be split in any number of documen= ts as determined by the WG:
- Problem statement and use cases for managem= ent of network slices.
- Architecture of network slices.
- Information= model(s) and operations for network slices on topics described above in the= scope section.
- SDI and CSI interface specifications and relevant YANG = models.
- Study the mappings of technology independent network equipment = configurations derived from the information model towards specific technolog= ies and coordination with relevant WGs as needed.

IV. Milestones
<= br>Dec 2018     Problem Statement, use cases and archite= cture
Dec 2018     Common information model and relat= ed YANG model
June 2019    Network slices composition and = interworking
October 2019 FCAPS management functions and operations on ne= twork
           =   slices including abstractions of policy control and
  &= nbsp;          enforcement, or = gateway functionalities.
March 2020   SDI and CSI interface spe= cifications and relevant YANG models

 

______________________= _________________________ Netslices mailing list Netslices@ietf.= org https:= //www.ietf.org/mailman/listinfo/netslices

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List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 31 Jan 2018 15:53:53 -0000 --_000_PS1PR0601MB14830C48CA6595709AA60BFB87FB0PS1PR0601MB1483_ Content-Type: text/plain; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable Hi Jeff and all, I think what COMS is dealing with in terms of SBI is more relevant to netwo= rk configuration models. Technology-dependent ones may be done in existing WGs (i.e. TEAS-ACTN) whil= st COMS may endeavor to examine generic ones. Best wishes Liang ________________________________ From: Netslices on behalf of Jeff Tantsura Sent: 31 January 2018 22:48:09 To: qiangli (D); Xavier de Foy; Kiran.Makhijani Cc: Pedro Martinez-Julia; NetSlices@ietf.org; Carlos Jes=FAs Bernardos Cano Subject: Re: [Netslices] Preliminary charter text for discussion Hi Christina, My point =96 you should never be dealing with device models directly, irres= pectively of where they were developed. Cheers, Jeff From: "qiangli (D)" Date: Wednesday, January 31, 2018 at 02:53 To: Jeff Tantsura , Xavier de Foy , "Kiran.Makhijani" Cc: Pedro Martinez-Julia , Carlos Jes=FAs Bernardos Cano = , "NetSlices@ietf.org" Subject: RE: [Netslices] Preliminary charter text for discussion Hi Jeff, I think we may understand this sentence from another perspective. As you sa= id, there are a number of network/device configuration models, and their ex= tension/mapping work is better to be done in corresponding WGs. For those t= echnologies that are not chartered by relevant WGs, the mapping/extension w= ork could be done in COMS if needed. What do you think? Best regards, Cristina QIANG From: Netslices [mailto:netslices-bounces@ietf.org] On Behalf Of Jeff Tants= ura Sent: Wednesday, January 31, 2018 5:09 AM To: Xavier de Foy ; Kiran.Makhijani Cc: Pedro Martinez-Julia ; Carlos Jes=FAs Bernardos Cano = ; NetSlices@ietf.org Subject: Re: [Netslices] Preliminary charter text for discussion Hi, I don=92t think this is right thing to do, device models would be number of= layers below where you=92d be operating. You might use draft-ietf-opsawg-service-model-explained as a reference. Cheers, Jeff From: Netslices > on behalf of Xavier de Foy > Date: Tuesday, January 30, 2018 at 15:44 To: "Kiran.Makhijani" > Cc: Pedro Martinez-Julia >, "NetS= lices@ietf.org" >, Carlos Jes=FAs Bernardos Cano > Subject: Re: [Netslices] Preliminary charter text for discussion Thanks Kiran, yes, I think one example is draft-homma-coms-slice-gateway, w= hich looks at the technology-independent requirements on some data plane eq= uipment. One interest of this is to help determine the appropriate abstract= ions and attributes to use in the models. Your wording looks good but I guess we can wait a bit longer for other comm= ents (here on the list and during tomorrow's COMS proponents meeting). Best Regards, Xavier. On Tue, Jan 30, 2018 at 1:45 PM, Kiran.Makhijani > wrote: Xavier, This statement may need some additional clarity. =93Study the mappings of technology independent network equipment configura= tions derived from the information model towards specific technologies and = coordination with relevant WGs as needed.=94 I think what you are trying to say is that equipment configurations may nee= d some work to provide slices related capabilities and support. Am I correc= t? If yes, then instead of use of =93study=94, we could say something to the e= ffect =93Identify and derive technology-independent network equipment confi= gurations from the Information model in coordination with relevant WGs as n= eeded=94. This shows a clear deliverable. -Kiran From: Netslices > on behalf of Xavier de Foy > Date: Tuesday, January 30, 2018 at 7:22 AM To: Carlos Jes=FAs Bernardos Cano > Cc: Pedro Martinez-Julia >, "NetS= lices@ietf.org" > Subject: Re: [Netslices] Preliminary charter text for discussion Thanks for clarifying the text Pedro. For reference and as base for future = comments, here is a fixed version of the full text with your wording. Regards, Xavier. I. Context A network slice is a set of related infrastructure resources and service fu= nctions with qualities that respond to specific requirements, being able to= cross multiple domains and use heterogeneous technologies. The goal of thi= s group is to produce and promote a technology-independent and resource-cen= tric management plane for network slices. Resources associated with a netwo= rk slice are normally comprised of physical and logical connections in acce= ss, aggregation and backbone networks as well as computing and storage elem= ents. Service functions associated with a network slice include network fun= ctions and network function chains pre-defined using corresponding network = infrastructure elements. A "Network Slice" is realized using a collection of technologies spanning a= cross data, control and management planes. Many of them rely on existing IE= TF technologies including both concluded and in-progress works such as: - Data plane: DetNet, TE-Tunnels, MPLS, Segment Routing VPNs, NVO3 etc. - Controller and/or control plane: ACTN, PCE and RSVP-TE (requiring LDP, BG= P, OSPF awareness at level below) etc. - Management plane: YANG, OAM etc. The foundation of COMS is a technology-independent and resource-centric man= agement plane. In reality, the network slice provider may have diverse tech= nology choices in different domains due to geographical and commercial reas= ons. Therefore, COMS makes no assumption on which technology is used for sp= ecific domains. The goal of COMS is to define a common and inter-operative = management mechanism, which is essential for the concept of network slicing= being adopted in a system with heterogeneous network infrastructures and s= ervices functions. Major characteristics include: - Enabling composition of slices within a single or over multiple domains. - Allowing the operation and management of a network slice in a uniform man= ner, even when this network slice span multiple technology and/or administr= ative domains. - Enabling deployment of services over individual slices. II. Scope The WG will describe an overall architecture for network slicing. To manage= network slices in a technology-independent manner, the network slice provi= der (NSP) will need to communicate with a network slice orchestrator (NSO) = over a COMS Service Delivery Interface (SDI). The COMS SDI can also be used= between network slice orchestrators, enabling hierarchical management thro= ugh the notion of network slice subnets. Network slices will be leased to t= enants, which will be able to use Customer Service Interface (CSI) exposed = by the NS provider to run management tasks (e.g., on-demand measurement) wi= thin their slice instance under certain policies. The WG will describe an information model representing a network slice, acc= ounting for the key elements used in network slices: connectivity, compute,= storage resources, network and service functions =97 this information mode= l includes the representation of managed objects and corresponding manageme= nt and operations, will guide the design of data models on SDI and CSI and = also will enable orchestrators interworking. The WG will specify requirements, operations and management functionalities= on network slicing interfaces SDI and/or CSI including: 1 Network slice service profile, e.g. set by NSP over SDI, including high-l= evel parameters for network infrastructures and service functions, together= with their corresponding performance requirements. 2 Lifecycle management of network slice. 3 Other FCAPS functions. An important task of NSP is to aggregate faults, p= erformance, status information and performance guarantees for certain servi= ces. 4 Slice composition or stitching in multi-domain environment. 5 Slice management by the tenant under the control of NSP, including deploy= ing network services over a slice. The WG will specify requirements and functionalities of data plane entities= as needed to enable the management of network slices. For example, this ma= y include abstractions of policy control and enforcement, or gateway functi= onalities. The WG will also study the mapping between the abstract informat= ion model and managed entities, and will liaise with other IETF WGs as need= ed. However, the WG will not attempt to replicate data plane technologies i= ncluding DetNet, TE-Tunnels, MPLS, Segment Routing VPNs, NVO3 etc. III. Deliverables WG deliverables are listed below and may be split in any number of document= s as determined by the WG: - Problem statement and use cases for management of network slices. - Architecture of network slices. - Information model(s) and operations for network slices on topics describe= d above in the scope section. - SDI and CSI interface specifications and relevant YANG models. - Study the mappings of technology independent network equipment configurat= ions derived from the information model towards specific technologies and c= oordination with relevant WGs as needed. IV. Milestones Dec 2018 Problem Statement, use cases and architecture Dec 2018 Common information model and related YANG model June 2019 Network slices composition and interworking October 2019 FCAPS management functions and operations on network slices including abstractions of policy control and enforcement, or gateway functionalities. March 2020 SDI and CSI interface specifications and relevant YANG models _______________________________________________ Netslices mailing list Nets= lices@ietf.org https://www.ietf.org/mailman/list= info/netslices --_000_PS1PR0601MB14830C48CA6595709AA60BFB87FB0PS1PR0601MB1483_ Content-Type: text/html; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable

Hi Jeff and all,


I think what COMS is dealing with= in terms of SBI is more relevant to network configuration models. 


Technology-dependent ones may be = done in existing WGs (i.e. TEAS-ACTN) whilst COMS may endeavor to exam= ine generic ones.


Best wishes

Liang



From: Netslices <netslic= es-bounces@ietf.org> on behalf of Jeff Tantsura <jefftant.ietf@gmail.= com>
Sent: 31 January 2018 22:48:09
To: qiangli (D); Xavier de Foy; Kiran.Makhijani
Cc: Pedro Martinez-Julia; NetSlices@ietf.org; Carlos Jes=FAs Bernard= os Cano
Subject: Re: [Netslices] Preliminary charter text for discussion
 

Hi Christina,

 

My point =96 you should never be dealing with devi= ce models directly, irrespectively of where they were developed.

 

Cheers,

Jeff

F= rom: "qiangli (D)" &= lt;qiangli3@huawei.com>
Date: Wednesday, January 31, 2018 at 02:53
To: Jeff Tantsura <jefftant.ietf@gmail.com>, Xavier de Foy <= ;x.defoy.ietf@gmail.com>, "Kiran.Makhijani" <Kiran.Makhijan= i@huawei.com>
Cc: Pedro Martinez-Julia <pedro@nict.go.jp>, Carlos Jes=FAs Be= rnardos Cano <cjbc@it.uc3m.es>, "NetSlices@ietf.org" <Ne= tSlices@ietf.org>
Subject: RE: [Netslices] Preliminary charter text for discussion

 

Hi= Jeff,

&n= bsp;

I = think we may understand this sentence from another perspective. As you said= , there are a number of network/device configuration models, and their exte= nsion/mapping work is better to be done in corresponding WGs. For those technologies that are not chartered by rel= evant WGs, the mapping/extension work could be done in COMS if needed. What= do you think?

&n= bsp;

Be= st regards,

Cr= istina QIANG

&n= bsp;

From: Netslices [mailto:netslices-bounces@i= etf.org] On Behalf Of Jeff Tantsura
Sent: Wednesday, January 31, 2018 5:09 AM
To: Xavier de Foy <x.defoy.ietf@gmail.com>; Kiran.Makhijani &l= t;Kiran.Makhijani@huawei.com>
Cc: Pedro Martinez-Julia <pedro@nict.go.jp>; Carlos Jes=FAs Be= rnardos Cano <cjbc@it.uc3m.es>; NetSlices@ietf.org
Subject: Re: [Netslices] Preliminary charter text for discussion

 

Hi,

 

I don=92t think this is right thing to do, device = models would be number of layers below where you=92d be operating.

You might use draft-ietf-opsawg-service-model-expl= ained as a reference.

 

Cheers,

Jeff

F= rom: Netslices <= netslices-bounces@ietf.org> on behalf of Xavier de Foy <x.defoy.ietf@gmail.com>
Date: Tuesday, January 30, 2018 at 15:44
To: "Kiran.Makhijani" <Kiran.Makhijani@huawe= i.com>
Cc: Pedro Martinez-Julia <pedro@nict.go.jp>, "NetSlices@ietf.org= " <NetSlices@ietf.org>, Carlos Jes=FAs Bernardos Cano <cjbc@it.uc3m.es<= span style=3D"font-size:12.0pt; color:black">>
Subject: Re: [Netslices] Preliminary charter text for discussion

 

 

On Tue, Jan 30, 2018 at 1:45 PM, = Kiran.Makhijani <Kiran.Makhijani@huawei.com> wrote:

Xavier,

This statement ma= y need some additional clarity.

=93S= tudy the mappings of technology independent network equipment configuration= s derived from the information model towards specific technologies and coordination with relevant WGs as needed.=94

 

I think what you = are trying to say is that equipment configurations may need some work to pr= ovide slices related capabilities and support. Am I correct?

If yes, then inst= ead of use of =93study=94, we could say something to the effect =93Identify= and derive technology-independent network equipment configurations from the Information model in coordination with relevant WGs as needed=94.= This shows a clear deliverable.

 

-Kiran

From: Netslices <ne= tslices-bounces@ietf.org> on behalf of Xavier de Foy <x.defoy.ietf@gmail.com>
Date: Tuesday, January 30, 2018 at 7:22 AM
To: Carlos Jes=FAs Bernardos Cano <cjbc@it.uc3m.es>
Cc: Pedro Martinez-Julia <pedro@nict.go.jp>, "NetSlices@ietf.org" <NetSlices@ietf.org>
Subject: Re: [Netslices] Preliminary charter text for discussion

 =

Xavier= .

<= span style=3D"">
I. Context

A network slice is a set of related infrastructure resources and service fu= nctions with qualities that respond to specific requirements, being able to= cross multiple domains and use heterogeneous technologies. The goal of thi= s group is to produce and promote a technology-independent and resource-centric management plane for network= slices. Resources associated with a network slice are normally comprised o= f physical and logical connections in access= , aggregation and backbone networks as well as computing and storage elemen= ts. Service functions associated with a network slice include network funct= ions and network function chains pre-defined using corresponding network infrastructure elements.

A "Network Slice" is realized using a collection of technologies = spanning across data, control and management planes. Many of them rely on e= xisting IETF technologies including both concluded and in-progress works su= ch as:
- Data plane: DetNet, TE-Tunnels, MPLS, Segment Routing VPNs, NVO3 etc.
- Controller and/or control plane: ACTN, PCE and RSVP-TE (requiring LDP, BG= P, OSPF awareness at level below) etc.
- Management plane: YANG, OAM etc.

The foundation of COMS is a technology-independent and resource-centric man= agement plane. In reality, the network slice provider may have diverse tech= nology choices in different domains due to geographical and commercial reas= ons. Therefore, COMS makes no assumption on which technology is used for specific domains. The goal of COMS is to d= efine a common and inter-operative management mechanism, which is essential= for the concept of network slicing being adopted in a system with heteroge= neous network infrastructures and services functions. Major characteristics include:
- Enabling composition of slices within a single or over multiple domains.<= br> - Allowing the operation and management of a network slice in a uniform man= ner, even when this network slice span multiple technology and/or administr= ative domains.
- Enabling deployment of services over individual slices.

II. Scope

The WG will describe an overall architecture for network slicing. To manage= network slices in a technology-independent manner, the network slice provi= der (NSP) will need to communicate with a network slice orchestrator (NSO) = over a COMS Service Delivery Interface (SDI). The COMS SDI can also be used between network slice orchestrators, = enabling hierarchical management through the notion of network slice subnet= s. Network slices will be leased to tenants, which will be able to use Cust= omer Service Interface (CSI) exposed by the NS provider to run management tasks (e.g., on-demand measurement) w= ithin their slice instance under certain policies.

The WG will describe an information model representing a network slice, acc= ounting for the key elements used in network slices: connectivity, compute,= storage resources, network and service functions =97 this information mode= l includes the representation of managed objects and corresponding management and operations, will guide the design= of data models on SDI and CSI and also will enable orchestrators interwork= ing.

The WG will specify requirements, operations and management functionalities= on network slicing interfaces SDI and/or CSI including:
1 Network slice service profile, e.g. set by NSP over SDI, including high-l= evel parameters for network infrastructures and service functions, together= with their corresponding performance requirements.
2 Lifecycle management of network slice.
3 Other FCAPS functions. An important task of NSP is to aggregate faults, p= erformance, status information and performance guarantees for certain servi= ces.
4 Slice composition or stitching in multi-domain environment.
5 Slice management by the tenant under the control of NSP, including deploy= ing network services over a slice.

The WG will specify requirements and functionalities of data plane entities= as needed to enable the management of network slices. For example, this ma= y include abstractions of policy control and enforcement, or gateway functi= onalities. The WG will also study the mapping between the abstract information model and managed entities, a= nd will liaise with other IETF WGs as needed. However, the WG will not atte= mpt to replicate data plane technologies including DetNet, TE-Tunnels, MPLS= , Segment Routing VPNs, NVO3 etc.

III. Deliverables

WG deliverables are listed below and may be split in any number of document= s as determined by the WG:
- Problem statement and use cases for management of network slices.
- Architecture of network slices.
- Information model(s) and operations for network slices on topics describe= d above in the scope section.
- SDI and CSI interface specifications and relevant YANG models.
- Study the mappings of technology independent network equipment configurat= ions derived from the information model towards specific technologies and c= oordination with relevant WGs as needed.

IV. Milestones

Dec 2018     Problem Statement, use cases and architect= ure
Dec 2018     Common information model and related YANG = model
June 2019    Network slices composition and interworking
October 2019 FCAPS management functions and operations on network
             sl= ices including abstractions of policy control and
             en= forcement, or gateway functionalities.
March 2020   SDI and CSI interface specifications and relevant YA= NG models

 

_________________________________= ______________ Netslices mailing list Netslices@iet= f.org https://www.ietf.org/mailman/listinfo/netslices

--_000_PS1PR0601MB14830C48CA6595709AA60BFB87FB0PS1PR0601MB1483_-- From nobody Wed Jan 31 08:46:37 2018 Return-Path: X-Original-To: netslices@ietfa.amsl.com Delivered-To: netslices@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 2D93312EB23 for ; Wed, 31 Jan 2018 08:46:34 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.998 X-Spam-Level: X-Spam-Status: No, score=-1.998 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, FREEMAIL_FROM=0.001, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=gmail.com Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id W_wDnSOMjXY0 for ; Wed, 31 Jan 2018 08:46:31 -0800 (PST) Received: from mail-qt0-x235.google.com (mail-qt0-x235.google.com [IPv6:2607:f8b0:400d:c0d::235]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 9B74812EAFA for ; Wed, 31 Jan 2018 08:46:30 -0800 (PST) Received: by mail-qt0-x235.google.com with SMTP id x27so22606184qtm.12 for ; Wed, 31 Jan 2018 08:46:30 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :cc; bh=zFD2xJ90InGkyGYCdgy+78BuG0IJFw2HMPOmDI/MoPo=; b=RyjYG+7VXwSObkvPGSeRTCf1zDsrzkQXqOzGszpP82tnILygeVvoVvx3zEne62g/96 G7z/dIYbZNUQ2KsxmmoJzGwoBNp7bAXa2DVoBLrOq0OAzoi3F3QuCl8CP1hvxcW8HksI IX9/se7UsEXVj0yCpFIPFgpCWWyIMlnedFW03Fdlr7OE5o3kzJcGggMbLLvK+QotggHX 3J1iPb/ztMtyYRwv0YxeLDzRf2V7nkq1WmVf8LAU/CgrWisgoXG4K9wgkrGlfpmuYkOQ lWBRDdSxlyg1b8KIW3Mdb6kuc+EZp4SZbrVlJtNSvMsp8EQl5lCtdAFsmCGA/0vVPaik DfOQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:in-reply-to:references:from:date :message-id:subject:to:cc; bh=zFD2xJ90InGkyGYCdgy+78BuG0IJFw2HMPOmDI/MoPo=; b=T9xUX2BPa/1iJ8zcS6Qi1706XJMFVLv6Ohe/FOk3B3gOpa4w7jSIXnDKi5Se7HPhBo SS3Tqj8W2LCFeLhllqiYBCmx8pHJIXWk7sBPnl/X7rXTvt/S1wdEp0kQfRSceQtZhsop 7MZ0M+vvls8pKCAkeZWU029cJ4QY0A+n/ypoy3wdqHaHXj8Pn0MT5TOC4zao6NJyKh5p ATn6zzsOW0Iv3sX69ULKFgLt+Qa5e9DzpXp0b4SHJ1tR5XRuQ0wdrXQUxt7aEiflyNvz PCeupdK7GkNM0arjrizrMTKuiyJQRMZMfACNd58iXbiZ8G2jBKPmPS7RtiWLS0Z2sK4I R06w== X-Gm-Message-State: AKwxytelXgLj4qI7hkVa5X7B3gVCPIiUWY0RtSbttMIbCGMIvd7occzR 6N6NO1lK+Y792DvRjQQ+ktEMMQ2j1axNZPe8TQg= X-Google-Smtp-Source: AH8x227OJW0WjA7RRPqfhPBnFhbwygZkH89Dg9nHhhZpbUPt+dAAJrLNLHillJFf2IQ8GxcdwaUHM1sZRFErY27xqjo= X-Received: by 10.237.52.69 with SMTP id w63mr4891872qtd.204.1517417189531; Wed, 31 Jan 2018 08:46:29 -0800 (PST) MIME-Version: 1.0 Received: by 10.237.60.194 with HTTP; Wed, 31 Jan 2018 08:46:29 -0800 (PST) In-Reply-To: References: <1517163726.4051.23.camel@it.uc3m.es> <20180130043352.GB15400@spectre> <1517307927.3201.7.camel@it.uc3m.es> <49297C39-EF21-4D3E-898B-4728B61221BB@huawei.com> <06C389826B926F48A557D5DB5A54C4ED2A5F8047@dggemi509-mbx.china.huawei.com> <96DCDC2D-6F10-4C7E-A82E-3B868F55E23D@gmail.com> From: Xavier de Foy Date: Wed, 31 Jan 2018 11:46:29 -0500 Message-ID: To: Liang GENG , Jeff Tantsura Cc: "qiangli (D)" , "Kiran.Makhijani" , Pedro Martinez-Julia , "NetSlices@ietf.org" , =?UTF-8?Q?Carlos_Jes=C3=BAs_Bernardos_Cano?= Content-Type: multipart/alternative; boundary="94eb2c1255508ee5a805641538c0" Archived-At: Subject: Re: [Netslices] Preliminary charter text for discussion X-BeenThere: netslices@ietf.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: "This list is intended for discussion and review of network slicing at IETF." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 31 Jan 2018 16:46:34 -0000 --94eb2c1255508ee5a805641538c0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Hi Jeff, thanks for pointing this out. The focus of the group is really service delivery and customer service models/interfaces, and activities that help defining those. The text needs to be more clear. We propose to add text specifically saying that device models are not within the scope of the group. Along this we tried to clarify the last paragraph of the scope and the last deliverable (now split in 2 topics). (...) The WG will specify *management requirements and functionalities of data plane entities as needed to enable the operation of network slices*. For example, this may include abstractions of policy control and enforcement, or gateway functionalities. The WG will also study the mapping between the abstract information model and managed entities, and will liaise with other IETF WGs as needed. However, the WG will not attempt to replicate *device models *and data plane technologies including DetNet, TE-Tunnels, MPLS, Segment Routing VPNs, NVO3 etc. III. Deliverables WG deliverables are listed below and may be split in any number of documents as determined by the WG: - Problem statement and use cases for management of network slices. - Architecture of network slices. - Information model(s) and operations for network slices on topics described above in the scope section. - SDI and CSI interface specifications and relevant YANG models. *- Specify management requirements and functionalities of data plane entities as needed to enable the operation of network slices.- Study mappings towards specific technologies and coordination with relevant WGs as needed.* (...) Best Regards, Xavier On Wed, Jan 31, 2018 at 10:53 AM, Liang GENG wrote= : > Hi Jeff and all, > > > I think what COMS is dealing with in terms of SBI is more relevant to > network configuration models. > > > Technology-dependent ones may be done in existing WGs (i.e. TEAS-ACTN) > whilst COMS may endeavor to examine generic ones. > > > Best wishes > > Liang > > > > ------------------------------ > *From:* Netslices on behalf of Jeff Tantsura > > *Sent:* 31 January 2018 22:48:09 > *To:* qiangli (D); Xavier de Foy; Kiran.Makhijani > *Cc:* Pedro Martinez-Julia; NetSlices@ietf.org; Carlos Jes=C3=BAs Bernard= os > Cano > > *Subject:* Re: [Netslices] Preliminary charter text for discussion > > > Hi Christina, > > > > My point =E2=80=93 you should never be dealing with device models directl= y, > irrespectively of where they were developed. > > > > Cheers, > > Jeff > > *From: *"qiangli (D)" > *Date: *Wednesday, January 31, 2018 at 02:53 > *To: *Jeff Tantsura , Xavier de Foy < > x.defoy.ietf@gmail.com>, "Kiran.Makhijani" > *Cc: *Pedro Martinez-Julia , Carlos Jes=C3=BAs Bernardo= s > Cano , "NetSlices@ietf.org" > *Subject: *RE: [Netslices] Preliminary charter text for discussion > > > > Hi Jeff, > > > > I think we may understand this sentence from another perspective. As you > said, there are a number of network/device configuration models, and thei= r > extension/mapping work is better to be done in corresponding WGs. For tho= se > technologies that are not chartered by relevant WGs, the mapping/extensio= n > work could be done in COMS if needed. What do you think? > > > > Best regards, > > Cristina QIANG > > > > *From:* Netslices [mailto:netslices-bounces@ietf.org] *On Behalf Of *Jeff > Tantsura > *Sent:* Wednesday, January 31, 2018 5:09 AM > *To:* Xavier de Foy ; Kiran.Makhijani < > Kiran.Makhijani@huawei.com> > *Cc:* Pedro Martinez-Julia ; Carlos Jes=C3=BAs Bernardo= s > Cano ; NetSlices@ietf.org > *Subject:* Re: [Netslices] Preliminary charter text for discussion > > > > Hi, > > > > I don=E2=80=99t think this is right thing to do, device models would be n= umber of > layers below where you=E2=80=99d be operating. > > You might use draft-ietf-opsawg-service-model-explained as a reference. > > > > Cheers, > > Jeff > > *From: *Netslices on behalf of Xavier de Foy > > *Date: *Tuesday, January 30, 2018 at 15:44 > *To: *"Kiran.Makhijani" > *Cc: *Pedro Martinez-Julia , "NetSlices@ietf.org" < > NetSlices@ietf.org>, Carlos Jes=C3=BAs Bernardos Cano > *Subject: *Re: [Netslices] Preliminary charter text for discussion > > > > Thanks Kiran, yes, I think one example is draft-homma-coms-slice-gateway, > which looks at the technology-independent requirements on some data plane > equipment. One interest of this is to help determine the appropriate > abstractions and attributes to use in the models. > > Your wording looks good but I guess we can wait a bit longer for other > comments (here on the list and during tomorrow's COMS proponents meeting)= . > > Best Regards, > > Xavier. > > > > On Tue, Jan 30, 2018 at 1:45 PM, Kiran.Makhijani < > Kiran.Makhijani@huawei.com> wrote: > > Xavier, > > This statement may need some additional clarity. > > =E2=80=9CStudy the mappings of technology independent network equipment > configurations derived from the information model towards specific > technologies and coordination with relevant WGs as needed.=E2=80=9D > > > > I think what you are trying to say is that equipment configurations may > need some work to provide slices related capabilities and support. Am I > correct? > > If yes, then instead of use of =E2=80=9Cstudy=E2=80=9D, we could say some= thing to the > effect =E2=80=9CIdentify and derive technology-independent network equipm= ent > configurations from the Information model in coordination with relevant W= Gs > as needed=E2=80=9D. This shows a clear deliverable. > > > > -Kiran > > *From: *Netslices on behalf of Xavier de Foy > > *Date: *Tuesday, January 30, 2018 at 7:22 AM > *To: *Carlos Jes=C3=BAs Bernardos Cano > *Cc: *Pedro Martinez-Julia , "NetSlices@ietf.org" < > NetSlices@ietf.org> > *Subject: *Re: [Netslices] Preliminary charter text for discussion > > > > Thanks for clarifying the text Pedro. For reference and as base for futur= e > comments, here is a fixed version of the full text with your wording. > > Regards, > > Xavier. > > > I. Context > > A network slice is a set of related infrastructure resources and service > functions with qualities that respond to specific requirements, being abl= e > to cross multiple domains and use heterogeneous technologies. The goal of > this group is to produce and promote a technology-independent and > resource-centric management plane for network slices. Resources associate= d > with a network slice are normally comprised of physical and logical > connections in access, aggregation and backbone networks as well as > computing and storage elements. Service functions associated with a netwo= rk > slice include network functions and network function chains pre-defined > using corresponding network infrastructure elements. > > A "Network Slice" is realized using a collection of technologies spanning > across data, control and management planes. Many of them rely on existing > IETF technologies including both concluded and in-progress works such as: > - Data plane: DetNet, TE-Tunnels, MPLS, Segment Routing VPNs, NVO3 etc. > - Controller and/or control plane: ACTN, PCE and RSVP-TE (requiring LDP, > BGP, OSPF awareness at level below) etc. > - Management plane: YANG, OAM etc. > > The foundation of COMS is a technology-independent and resource-centric > management plane. In reality, the network slice provider may have diverse > technology choices in different domains due to geographical and commercia= l > reasons. Therefore, COMS makes no assumption on which technology is used > for specific domains. The goal of COMS is to define a common and > inter-operative management mechanism, which is essential for the concept = of > network slicing being adopted in a system with heterogeneous network > infrastructures and services functions. Major characteristics include: > - Enabling composition of slices within a single or over multiple domains= . > - Allowing the operation and management of a network slice in a uniform > manner, even when this network slice span multiple technology and/or > administrative domains. > - Enabling deployment of services over individual slices. > > II. Scope > > The WG will describe an overall architecture for network slicing. To > manage network slices in a technology-independent manner, the network sli= ce > provider (NSP) will need to communicate with a network slice orchestrator > (NSO) over a COMS Service Delivery Interface (SDI). The COMS SDI can also > be used between network slice orchestrators, enabling hierarchical > management through the notion of network slice subnets. Network slices wi= ll > be leased to tenants, which will be able to use Customer Service Interfac= e > (CSI) exposed by the NS provider to run management tasks (e.g., on-demand > measurement) within their slice instance under certain policies. > > The WG will describe an information model representing a network slice, > accounting for the key elements used in network slices: connectivity, > compute, storage resources, network and service functions =E2=80=94 this > information model includes the representation of managed objects and > corresponding management and operations, will guide the design of data > models on SDI and CSI and also will enable orchestrators interworking. > > The WG will specify requirements, operations and management > functionalities on network slicing interfaces SDI and/or CSI including: > 1 Network slice service profile, e.g. set by NSP over SDI, including > high-level parameters for network infrastructures and service functions, > together with their corresponding performance requirements. > 2 Lifecycle management of network slice. > 3 Other FCAPS functions. An important task of NSP is to aggregate faults, > performance, status information and performance guarantees for certain > services. > 4 Slice composition or stitching in multi-domain environment. > 5 Slice management by the tenant under the control of NSP, including > deploying network services over a slice. > > The WG will specify requirements and functionalities of data plane > entities as needed to enable the management of network slices. For exampl= e, > this may include abstractions of policy control and enforcement, or gatew= ay > functionalities. The WG will also study the mapping between the abstract > information model and managed entities, and will liaise with other IETF W= Gs > as needed. However, the WG will not attempt to replicate data plane > technologies including DetNet, TE-Tunnels, MPLS, Segment Routing VPNs, NV= O3 > etc. > > III. Deliverables > > WG deliverables are listed below and may be split in any number of > documents as determined by the WG: > - Problem statement and use cases for management of network slices. > - Architecture of network slices. > - Information model(s) and operations for network slices on topics > described above in the scope section. > - SDI and CSI interface specifications and relevant YANG models. > - Study the mappings of technology independent network equipment > configurations derived from the information model towards specific > technologies and coordination with relevant WGs as needed. > > IV. Milestones > > Dec 2018 Problem Statement, use cases and architecture > Dec 2018 Common information model and related YANG model > June 2019 Network slices composition and interworking > October 2019 FCAPS management functions and operations on network > slices including abstractions of policy control and > enforcement, or gateway functionalities. > March 2020 SDI and CSI interface specifications and relevant YANG model= s > > > > _______________________________________________ Netslices mailing list > Netslices@ietf.org https://www.ietf.org/mailman/listinfo/netslices > --94eb2c1255508ee5a805641538c0 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Hi Jeff, thanks for pointing this out.

T= he focus of the group is really service delivery and customer service model= s/interfaces, and activities that help defining those. The text needs to be= more clear. We propose to add text specifically saying that device models = are not within the scope of the group. Along this we tried to clarify the l= ast paragraph of the scope and the last deliverable (now split in 2 topics)= .

(...)
The WG will specify management requirements and functi= onalities of data plane entities as needed to enable the operation=C2=A0 of= network slices. For example, this may include abstractions of policy c= ontrol and enforcement, or gateway functionalities. The WG will also study = the mapping between the abstract information model and managed entities, an= d will liaise with other IETF WGs as needed. However, the WG will not attem= pt to replicate device models and data plane technologies including = DetNet, TE-Tunnels, MPLS, Segment Routing VPNs, NVO3 etc.

III. Deliv= erables

WG deliverables are listed below and may be split in any num= ber of documents as determined by the WG:
- Problem statement and use ca= ses for management of network slices.
- Architecture of network slices.<= br>- Information model(s) and operations for network slices on topics descr= ibed above in the scope section.
- SDI and CSI interface specifications = and relevant YANG models.
- Specify management requirements and funct= ionalities of data plane entities as needed to enable the operation of netw= ork slices.
- Study mappings towards specific technologies and coordinat= ion with relevant WGs as needed.
(...)

Best Regards,
Xavier


On Wed, Jan 31, 2018 at 10:53 AM, Liang GEN= G <liang.geng@hotmail.com> wrote:

Hi Jeff and all,


I think what COMS is dealing with= in terms of SBI is more relevant to network configuration models.=C2=A0


Technology-dependent ones may be = done in existing WGs=C2=A0(i.e. TEAS-ACTN) whilst COMS may endeavor to exam= ine generic ones.


Best wishes

Liang



From: N= etslices <netslices-bounces@ietf.org> on behalf of Jeff Tantsura <jefftant.ietf@gmail.c= om>
Sent: 31 January 2018 22:48:09
To: qiangli (D); Xavier de Foy; Kiran.Makhijani
Cc: Pedro Martinez-Julia; NetSlices@ietf.org; Carlos Jes=C3=BAs Bernardos Cano
=

Subject: Re: [Netslices] Preliminary charter text for discussion
=C2=A0

Hi Christina,

=C2=A0

My point =E2=80=93 you should = never be dealing with device models directly, irrespectively of where they = were developed.

=C2=A0

Ch= eers,

Je= ff

From: "qiangli (D)" &l= t;qiangli3@huawei.= com>
Date: Wednesday, January 31, 2018 at 02:53
To: Jeff Tantsura <jefftant.ietf@gmail.com>, Xavier de Foy <x.defoy.ietf@gmail.com= >, "Kiran.Makhijani" <Kiran.Makhijani@huawei.com>
Cc: Pedro Martinez-Julia <pedro@nict.go.jp>, Carlos Jes=C3=BAs Bernardos Cano &= lt;cjbc@it.uc3m.es= >, "NetSlic= es@ietf.org" <NetSlices@ietf.org>
Subject: RE: [Netslices] Preliminary charter text for discussion

=C2=A0

Hi Jeff,

=C2=A0

I think we may understand this sentence from another persp= ective. As you said, there are a number of network/device configuration mod= els, and their extension/mapping work is better to be done in corresponding WGs. For those technologies that are not chartered by rel= evant WGs, the mapping/extension work could be done in COMS if needed. What= do you think?

=C2=A0

Best regards,

Cristina QIANG

=C2=A0

From: Netslices [mailto= :netslices-= bounces@ietf.org] On Behalf Of Jeff Tantsura
Sent: Wednesday, January 31, 2018 5:09 AM
To: Xavier de Foy <x.defoy.ietf@gmail.com>; Kiran.Makhijani <Kiran.Makhijani@hu= awei.com>
Cc: Pedro Martinez-Julia <pedro@nict.go.jp>; Carlos Jes=C3=BAs Bernardos Cano &= lt;cjbc@it.uc3m.es= >; NetSlices@iet= f.org
Subject: Re: [Netslices] Preliminary charter text for discussion

=C2=A0

Hi,

=C2=A0

I don=E2=80=99t think this is = right thing to do, device models would be number of layers below where you= =E2=80=99d be operating.

You might use draft-ietf-opsaw= g-service-model-explained as a reference.

=C2=A0

Ch= eers,

Je= ff

From: Netslices <netslices-bounces@ietf.org> on behalf of Xavier de Foy <x.defoy.ietf@gmail.com>
Date: Tuesday, January 30, 2018 at 15:44
To: "Kiran.Makhijani" <Kir= an.Makhijani@huawei.com>
Cc: Pedro Martinez-Julia <pedro@nict.go.jp>, "NetSlices@ietf.org" <NetSlices@ietf.org>, Carlos Jes=C3=BAs Bernardos Cano <= cjbc@it.uc3m.es>
Subject: Re: [Netslices] Preliminary charter text for discussion

=C2=A0

=C2=A0

On Tue, Jan 30, 2018 at = 1:45 PM, Kiran.Makhijani <Kiran.Makhijani@huawei.com> wrote:

Xavier,

This statement may n= eed some additional clarity.

=E2=80= =9CStudy the mappings of technology independent network equipment configura= tions derived from the information model towards specific technologies and coordination with relevant WGs as needed.=E2=80=9D=

=C2=A0=

I think what you are= trying to say is that equipment configurations may need some work to provi= de slices related capabilities and support. Am I correct?

If yes, then instead= of use of =E2=80=9Cstudy=E2=80=9D, we could say something to the effect = =E2=80=9CIdentify and derive technology-independent network equipment confi= gurations from the Information model in coordination with relevant WGs as needed=E2= =80=9D. This shows a clear deliverable.

=C2=A0=

-Kiran

From: Netsli= ces <netslices-bounces@ietf.o= rg> on behalf of Xavier de Foy <x.def= oy.ietf@gmail.com>
Date: Tuesday, January 30, 2018 at 7:22 AM
To: Carlos Jes=C3=BAs Bernardos Cano <cjbc@it.uc3m.es>
Cc: Pedro Martinez-Julia <pedro@n= ict.go.jp>, "NetSlices@ietf.org" &l= t;NetSlices@ietf.org<= /span>>
Subject: Re: [Netslices] Preliminary charter text for discussion

=C2=A0

Xavier.


I. Context

A network slice is a set of related infrastructure resources and service fu= nctions with qualities that respond to specific requirements, being able to= cross multiple domains and use heterogeneous technologies. The goal of thi= s group is to produce and promote a technology-independent and resource-centric management plane for network= slices. Resources associated with a network slice are normally comprised o= f physical and logical c= onnections in access, aggregation and backbone networks as well as computin= g and storage elements. Service functions associated with a network slice i= nclude network functions and network function chains pre-defined using corresponding network infrastructure elements.

A "Network Slice" is realized using a collection of technologies = spanning across data, control and management planes. Many of them rely on e= xisting IETF technologies including both concluded and in-progress works su= ch as:
- Data plane: DetNet, TE-Tunnels, MPLS, Segment Routing VPNs, NVO3 etc.
- Controller and/or control plane: ACTN, PCE and RSVP-TE (requiring LDP, BG= P, OSPF awareness at level below) etc.
- Management plane: YANG, OAM etc.

The foundation of COMS is a technology-independent and resource-centric man= agement plane. In reality, the network slice provider may have diverse tech= nology choices in different domains due to geographical and commercial reas= ons. Therefore, COMS makes no assumption on which technology is used for specific domains. The goal of COMS is to d= efine a common and inter-operative management mechanism, which is essential= for the concept of network slicing being adopted in a system with heteroge= neous network infrastructures and services functions. Major characteristics include:
- Enabling composition of slices within a single or over multiple domains.<= br> - Allowing the operation and management of a network slice in a uniform man= ner, even when this network slice span multiple technology and/or administr= ative domains.
- Enabling deployment of services over individual slices.

II. Scope

The WG will describe an overall architecture for network slicing. To manage= network slices in a technology-independent manner, the network slice provi= der (NSP) will need to communicate with a network slice orchestrator (NSO) = over a COMS Service Delivery Interface (SDI). The COMS SDI can also be used between network slice orchestrators, = enabling hierarchical management through the notion of network slice subnet= s. Network slices will be leased to tenants, which will be able to use Cust= omer Service Interface (CSI) exposed by the NS provider to run management tasks (e.g., on-demand measurement) w= ithin their slice instance under certain policies.

The WG will describe an information model representing a network slice, acc= ounting for the key elements used in network slices: connectivity, compute,= storage resources, network and service functions =E2=80=94 this informatio= n model includes the representation of managed objects and corresponding management and operations, will guide the design= of data models on SDI and CSI and also will enable orchestrators interwork= ing.

The WG will specify requirements, operations and management functionalities= on network slicing interfaces SDI and/or CSI including:
1 Network slice service profile, e.g. set by NSP over SDI, including high-l= evel parameters for network infrastructures and service functions, together= with their corresponding performance requirements.
2 Lifecycle management of network slice.
3 Other FCAPS functions. An important task of NSP is to aggregate faults, p= erformance, status information and performance guarantees for certain servi= ces.
4 Slice composition or stitching in multi-domain environment.
5 Slice management by the tenant under the control of NSP, including deploy= ing network services over a slice.

The WG will specify requirements and functionalities of data plane entities= as needed to enable the management of network slices. For example, this ma= y include abstractions of policy control and enforcement, or gateway functi= onalities. The WG will also study the mapping between the abstract information model and managed entities, a= nd will liaise with other IETF WGs as needed. However, the WG will not atte= mpt to replicate data plane technologies including DetNet, TE-Tunnels, MPLS= , Segment Routing VPNs, NVO3 etc.

III. Deliverables

WG deliverables are listed below and may be split in any number of document= s as determined by the WG:
- Problem statement and use cases for management of network slices.
- Architecture of network slices.
- Information model(s) and operations for network slices on topics describe= d above in the scope section.
- SDI and CSI interface specifications and relevant YANG models.
- Study the mappings of technology independent network equipment configurat= ions derived from the information model towards specific technologies and c= oordination with relevant WGs as needed.

IV. Milestones

Dec 2018=C2=A0=C2=A0=C2=A0=C2=A0 Problem Statement, use cases and architect= ure
Dec 2018=C2=A0=C2=A0=C2=A0=C2=A0 Common information model and related YANG = model
June 2019=C2=A0=C2=A0=C2=A0 Network slices composition and interworking
October 2019 FCAPS management functions and operations on network
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 sl= ices including abstractions of policy control and
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 en= forcement, or gateway functionalities.
March 2020=C2=A0=C2=A0 SDI and CSI interface specifications and relevant YA= NG models

=C2=A0

________________________= _______________________ Netslices mailing list Netsli= ces@ietf.org https://www.ietf.org/mailman/listinfo/netslices


--94eb2c1255508ee5a805641538c0-- From nobody Wed Jan 31 09:19:08 2018 Return-Path: X-Original-To: netslices@ietfa.amsl.com Delivered-To: netslices@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id B3E70131895 for ; Wed, 31 Jan 2018 09:19:06 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -4.228 X-Spam-Level: X-Spam-Status: No, score=-4.228 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, HK_RANDOM_ENVFROM=0.001, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_MED=-2.3, RCVD_IN_MSPIKE_H3=-0.01, RCVD_IN_MSPIKE_WL=-0.01, SPF_PASS=-0.001, T_RP_MATCHES_RCVD=-0.01, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id kaiq7EY4Xk0h for ; Wed, 31 Jan 2018 09:19:02 -0800 (PST) Received: from huawei.com (lhrrgout.huawei.com [194.213.3.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id E4FC1131880 for ; Wed, 31 Jan 2018 09:17:37 -0800 (PST) Received: from lhreml704-cah.china.huawei.com (unknown [172.18.7.107]) by Forcepoint Email with ESMTP id C1F9DC145FCF8 for ; Wed, 31 Jan 2018 17:17:33 +0000 (GMT) Received: from SJCEML703-CHM.china.huawei.com (10.208.112.39) by lhreml704-cah.china.huawei.com (10.201.108.45) with Microsoft SMTP Server (TLS) id 14.3.361.1; Wed, 31 Jan 2018 17:17:34 +0000 Received: from SJCEML521-MBS.china.huawei.com ([169.254.2.168]) by SJCEML703-CHM.china.huawei.com ([169.254.5.179]) with mapi id 14.03.0382.000; Wed, 31 Jan 2018 09:17:24 -0800 From: Leeyoung To: Liang GENG , Jeff Tantsura , "qiangli (D)" , Xavier de Foy , Kiran.Makhijani CC: Pedro Martinez-Julia , =?iso-8859-1?Q?Carlos_Jes=FAs_Bernardos_Cano?= , "NetSlices@ietf.org" Thread-Topic: [Netslices] Preliminary charter text for discussion Thread-Index: AQHTl5eHHxrSxL2LX02p2vK4T3hqBqOKILoAgAGaPQCAAKMFAIAAYjuAgABSiACAADlLAIAAIQQAgAAHFYCAALPqgIAAc+WAgAASUAD//5BcsA== Date: Wed, 31 Jan 2018 17:17:23 +0000 Message-ID: <7AEB3D6833318045B4AE71C2C87E8E173CF94DF4@sjceml521-mbs.china.huawei.com> References: <1517163726.4051.23.camel@it.uc3m.es> <20180130043352.GB15400@spectre> <1517307927.3201.7.camel@it.uc3m.es> <49297C39-EF21-4D3E-898B-4728B61221BB@huawei.com> <06C389826B926F48A557D5DB5A54C4ED2A5F8047@dggemi509-mbx.china.huawei.com>, <96DCDC2D-6F10-4C7E-A82E-3B868F55E23D@gmail.com> In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.218.137.166] Content-Type: multipart/alternative; boundary="_000_7AEB3D6833318045B4AE71C2C87E8E173CF94DF4sjceml521mbschi_" MIME-Version: 1.0 X-CFilter-Loop: Reflected Archived-At: Subject: Re: [Netslices] Preliminary charter text for discussion X-BeenThere: netslices@ietf.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: "This list is intended for discussion and review of network slicing at IETF." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 31 Jan 2018 17:19:07 -0000 --_000_7AEB3D6833318045B4AE71C2C87E8E173CF94DF4sjceml521mbschi_ Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Hi Liang, The SBI work in TEAS has IP/MPLS, Segment Routing, OTN, WDM (with CCAMP) in= scope. What is technology-independent, generic data plane on SBI? We canno= t really separate data plane technology from the model on SBI. Thanks. Young From: Netslices [mailto:netslices-bounces@ietf.org] On Behalf Of Liang GENG Sent: Wednesday, January 31, 2018 9:54 AM To: Jeff Tantsura ; qiangli (D) ; Xavier de Foy ; Kiran.Makhijani Cc: Pedro Martinez-Julia ; Carlos Jes=FAs Bernardos Cano = ; NetSlices@ietf.org Subject: Re: [Netslices] Preliminary charter text for discussion Hi Jeff and all, I think what COMS is dealing with in terms of SBI is more relevant to netwo= rk configuration models. Technology-dependent ones may be done in existing WGs (i.e. TEAS-ACTN) whil= st COMS may endeavor to examine generic ones. Best wishes Liang ________________________________ From: Netslices > on behalf of Jeff Tantsura > Sent: 31 January 2018 22:48:09 To: qiangli (D); Xavier de Foy; Kiran.Makhijani Cc: Pedro Martinez-Julia; NetSlices@ietf.org; Ca= rlos Jes=FAs Bernardos Cano Subject: Re: [Netslices] Preliminary charter text for discussion Hi Christina, My point - you should never be dealing with device models directly, irrespe= ctively of where they were developed. Cheers, Jeff From: "qiangli (D)" > Date: Wednesday, January 31, 2018 at 02:53 To: Jeff Tantsura >= , Xavier de Foy >, "K= iran.Makhijani" > Cc: Pedro Martinez-Julia >, Carlo= s Jes=FAs Bernardos Cano >, "NetSli= ces@ietf.org" > Subject: RE: [Netslices] Preliminary charter text for discussion Hi Jeff, I think we may understand this sentence from another perspective. As you sa= id, there are a number of network/device configuration models, and their ex= tension/mapping work is better to be done in corresponding WGs. For those t= echnologies that are not chartered by relevant WGs, the mapping/extension w= ork could be done in COMS if needed. What do you think? Best regards, Cristina QIANG From: Netslices [mailto:netslices-bounces@ietf.org] On Behalf Of Jeff Tants= ura Sent: Wednesday, January 31, 2018 5:09 AM To: Xavier de Foy >; = Kiran.Makhijani > Cc: Pedro Martinez-Julia >; Carlo= s Jes=FAs Bernardos Cano >; NetSlic= es@ietf.org Subject: Re: [Netslices] Preliminary charter text for discussion Hi, I don't think this is right thing to do, device models would be number of l= ayers below where you'd be operating. You might use draft-ietf-opsawg-service-model-explained as a reference. Cheers, Jeff From: Netslices > on behalf of Xavier de Foy > Date: Tuesday, January 30, 2018 at 15:44 To: "Kiran.Makhijani" > Cc: Pedro Martinez-Julia >, "NetS= lices@ietf.org" >, Carlos Jes=FAs Bernardos Cano > Subject: Re: [Netslices] Preliminary charter text for discussion Thanks Kiran, yes, I think one example is draft-homma-coms-slice-gateway, w= hich looks at the technology-independent requirements on some data plane eq= uipment. One interest of this is to help determine the appropriate abstract= ions and attributes to use in the models. Your wording looks good but I guess we can wait a bit longer for other comm= ents (here on the list and during tomorrow's COMS proponents meeting). Best Regards, Xavier. On Tue, Jan 30, 2018 at 1:45 PM, Kiran.Makhijani > wrote: Xavier, This statement may need some additional clarity. "Study the mappings of technology independent network equipment configurati= ons derived from the information model towards specific technologies and co= ordination with relevant WGs as needed." I think what you are trying to say is that equipment configurations may nee= d some work to provide slices related capabilities and support. Am I correc= t? If yes, then instead of use of "study", we could say something to the effec= t "Identify and derive technology-independent network equipment configurati= ons from the Information model in coordination with relevant WGs as needed"= . This shows a clear deliverable. -Kiran From: Netslices > on behalf of Xavier de Foy > Date: Tuesday, January 30, 2018 at 7:22 AM To: Carlos Jes=FAs Bernardos Cano > Cc: Pedro Martinez-Julia >, "NetS= lices@ietf.org" > Subject: Re: [Netslices] Preliminary charter text for discussion Thanks for clarifying the text Pedro. For reference and as base for future = comments, here is a fixed version of the full text with your wording. Regards, Xavier. I. Context A network slice is a set of related infrastructure resources and service fu= nctions with qualities that respond to specific requirements, being able to= cross multiple domains and use heterogeneous technologies. The goal of thi= s group is to produce and promote a technology-independent and resource-cen= tric management plane for network slices. Resources associated with a netwo= rk slice are normally comprised of physical and logical connections in acce= ss, aggregation and backbone networks as well as computing and storage elem= ents. Service functions associated with a network slice include network fun= ctions and network function chains pre-defined using corresponding network = infrastructure elements. A "Network Slice" is realized using a collection of technologies spanning a= cross data, control and management planes. Many of them rely on existing IE= TF technologies including both concluded and in-progress works such as: - Data plane: DetNet, TE-Tunnels, MPLS, Segment Routing VPNs, NVO3 etc. - Controller and/or control plane: ACTN, PCE and RSVP-TE (requiring LDP, BG= P, OSPF awareness at level below) etc. - Management plane: YANG, OAM etc. The foundation of COMS is a technology-independent and resource-centric man= agement plane. In reality, the network slice provider may have diverse tech= nology choices in different domains due to geographical and commercial reas= ons. Therefore, COMS makes no assumption on which technology is used for sp= ecific domains. The goal of COMS is to define a common and inter-operative = management mechanism, which is essential for the concept of network slicing= being adopted in a system with heterogeneous network infrastructures and s= ervices functions. Major characteristics include: - Enabling composition of slices within a single or over multiple domains. - Allowing the operation and management of a network slice in a uniform man= ner, even when this network slice span multiple technology and/or administr= ative domains. - Enabling deployment of services over individual slices. II. Scope The WG will describe an overall architecture for network slicing. To manage= network slices in a technology-independent manner, the network slice provi= der (NSP) will need to communicate with a network slice orchestrator (NSO) = over a COMS Service Delivery Interface (SDI). The COMS SDI can also be used= between network slice orchestrators, enabling hierarchical management thro= ugh the notion of network slice subnets. Network slices will be leased to t= enants, which will be able to use Customer Service Interface (CSI) exposed = by the NS provider to run management tasks (e.g., on-demand measurement) wi= thin their slice instance under certain policies. The WG will describe an information model representing a network slice, acc= ounting for the key elements used in network slices: connectivity, compute,= storage resources, network and service functions - this information model = includes the representation of managed objects and corresponding management= and operations, will guide the design of data models on SDI and CSI and al= so will enable orchestrators interworking. The WG will specify requirements, operations and management functionalities= on network slicing interfaces SDI and/or CSI including: 1 Network slice service profile, e.g. set by NSP over SDI, including high-l= evel parameters for network infrastructures and service functions, together= with their corresponding performance requirements. 2 Lifecycle management of network slice. 3 Other FCAPS functions. An important task of NSP is to aggregate faults, p= erformance, status information and performance guarantees for certain servi= ces. 4 Slice composition or stitching in multi-domain environment. 5 Slice management by the tenant under the control of NSP, including deploy= ing network services over a slice. The WG will specify requirements and functionalities of data plane entities= as needed to enable the management of network slices. For example, this ma= y include abstractions of policy control and enforcement, or gateway functi= onalities. The WG will also study the mapping between the abstract informat= ion model and managed entities, and will liaise with other IETF WGs as need= ed. However, the WG will not attempt to replicate data plane technologies i= ncluding DetNet, TE-Tunnels, MPLS, Segment Routing VPNs, NVO3 etc. III. Deliverables WG deliverables are listed below and may be split in any number of document= s as determined by the WG: - Problem statement and use cases for management of network slices. - Architecture of network slices. - Information model(s) and operations for network slices on topics describe= d above in the scope section. - SDI and CSI interface specifications and relevant YANG models. - Study the mappings of technology independent network equipment configurat= ions derived from the information model towards specific technologies and c= oordination with relevant WGs as needed. IV. Milestones Dec 2018 Problem Statement, use cases and architecture Dec 2018 Common information model and related YANG model June 2019 Network slices composition and interworking October 2019 FCAPS management functions and operations on network slices including abstractions of policy control and enforcement, or gateway functionalities. March 2020 SDI and CSI interface specifications and relevant YANG models _______________________________________________ Netslices mailing list Nets= lices@ietf.org https://www.ietf.org/mailman/list= info/netslices --_000_7AEB3D6833318045B4AE71C2C87E8E173CF94DF4sjceml521mbschi_ Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

Hi Liang,

 

The SBI work in TEAS has IP/MPLS, Seg= ment Routing, OTN, WDM (with CCAMP) in scope. What is technology-independen= t, generic data plane on SBI? We cannot really separate data plane technology from the model on SBI.

 

Thanks.

Young

 

From: Netslices [mailto:netslices-bo= unces@ietf.org] On Behalf Of Liang GENG
Sent: Wednesday, January 31, 2018 9:54 AM
To: Jeff Tantsura <jefftant.ietf@gmail.com>; qiangli (D) <q= iangli3@huawei.com>; Xavier de Foy <x.defoy.ietf@gmail.com>; Kiran= .Makhijani <Kiran.Makhijani@huawei.com>
Cc: Pedro Martinez-Julia <pedro@nict.go.jp>; Carlos Jes=FAs Be= rnardos Cano <cjbc@it.uc3m.es>; NetSlices@ietf.org
Subject: Re: [Netslices] Preliminary charter text for discussion

 

H= i Jeff and all,

<= o:p> 

I= think what COMS is dealing with in terms of SBI is more relevant to networ= k configuration models. 

<= o:p> 

T= echnology-dependent ones may be done in existing WGs (i.e. TEAS-ACTN) = whilst COMS may endeavor to examine generic ones.

<= o:p> 

B= est wishes

L= iang

<= o:p> 

<= o:p> 

From: Netsli= ces <netslices-bounces@iet= f.org> on behalf of Jeff Tantsura <= jefftant.ietf@gmail.com>
Sent: 31 January 2018 22:48:09
To: qiangli (D); Xavier de Foy; Kiran.Makhijani
Cc: Pedro Martinez-Julia; NetS= lices@ietf.org; Carlos Jes=FAs Bernardos Cano
Subject: Re: [Netslices] Preliminary charter text for discussion

 

Hi Christina,

 

My point – you should never be dealing with d= evice models directly, irrespectively of where they were developed.

 

Cheers,

Jeff<= /p>

Fro= m: "qiangli (D)" &l= t;qiangli3@huawei.com>
Date: Wednesday, January 31, 2018 at 02:53
To: Jeff Tantsura <jef= ftant.ietf@gmail.com>, Xavier de Foy <x.defoy.ietf@gmail.com>, "Kiran.Makhijani" = <Kiran.Makhijani@huawei.co= m>
Cc: Pedro Martinez-Julia <ped= ro@nict.go.jp>, Carlos Jes=FAs Bernardos Cano <cjbc@it.uc3m.es>, "NetSlices@ietf.org" <NetSlices@ietf.org>
Subject: RE: [Netslices] Preliminary charter text for discussion

 

Hi J= eff,

&nbs= p;

I th= ink we may understand this sentence from another perspective. As you said, = there are a number of network/device configuration models, and their extens= ion/mapping work is better to be done in corresponding WGs. For those technologies that are not chartered by rel= evant WGs, the mapping/extension work could be done in COMS if needed. What= do you think?

&nbs= p;

Best= regards,

Cris= tina QIANG

&nbs= p;

From: Netslices [mailto:netslices-bounces@ietf.org] On Behalf Of Jeff Tantsura
Sent: Wednesday, January 31, 2018 5:09 AM
To: Xavier de Foy <x.de= foy.ietf@gmail.com>; Kiran.Makhijani <Kiran.Makhijani@huawei.com>
Cc: Pedro Martinez-Julia <ped= ro@nict.go.jp>; Carlos Jes=FAs Bernardos Cano <cjbc@it.uc3m.es>; NetSlices@ietf.org
Subject: Re: [Netslices] Preliminary charter text for discussion

 

Hi,

 

I don’t think this is right thing to do, devi= ce models would be number of layers below where you’d be operating.

You might use draft-ietf-opsawg-service-model-expla= ined as a reference.

 

Cheers,

Jeff<= /p>

Fro= m: Netslices <n= etslices-bounces@ietf.org> on behalf of Xavier de Foy <x.defoy.ietf@gmail.com>
Date: Tuesday, January 30, 2018 at 15:44
To: "Kiran.Makhijani" <Kiran.Makhijani@huawe= i.com>
Cc: Pedro Martinez-Julia <pedro@nict.go.jp>, "NetSlices@ietf.org<= /a>" <NetSlices@ietf.org>, Carlos Jes=FAs Bernardos Cano <cjbc@it.uc3m.es>
Subject: Re: [Netslices] Preliminary charter text for discussion

 

 

On Tue, Jan 30, 2018 at 1:45 PM, Kiran.Makhijani &l= t;Kiran.Mak= hijani@huawei.com> wrote:

Xavier,

This statement may need some additional clarity= .

“Study the mappings of techno= logy independent network equipment configurations derived from the informat= ion model towards specific technologies and coordination with relevant WGs as needed.”

 

I think what you are trying to say is that equi= pment configurations may need some work to provide slices related capabilit= ies and support. Am I correct?

If yes, then instead of use of “studyR= 21;, we could say something to the effect “Identify and derive techno= logy-independent network equipment configurations from the Information model in coordination with relevant WGs as needed”. This shows a cle= ar deliverable.

 

-Kiran

From: Netslices <netslices-bounces@ietf.org> on behalf of Xavier de Foy <x.defoy.ietf@gmail.com<= /a>>
Date: Tuesday, January 30, 2018 at 7:22 AM
To: Carlos Jes=FAs Bernardos Cano <cjbc@it.uc3m= .es>
Cc: Pedro Martinez-Julia <pedro@nict.go.jp>, "NetSlices@ietf.org" <NetSlices@ietf.org>
Subject: Re: [Netslices] Preliminary charter text for discussion

 

Xavier.


I. Context

A network slice is a set of related infrastructure resources and service fu= nctions with qualities that respond to specific requirements, being able to= cross multiple domains and use heterogeneous technologies. The goal of thi= s group is to produce and promote a technology-independent and resource-centric management plane for network= slices. Resources associated with a network slice are normally comprised o= f physical and logical connections in access,= aggregation and backbone networks as well as computing and storage element= s. Service functions associated with a network slice include network functi= ons and network function chains pre-defined using corresponding network infrastructure elements.

A "Network Slice" is realized using a collection of technologies = spanning across data, control and management planes. Many of them rely on e= xisting IETF technologies including both concluded and in-progress works su= ch as:
- Data plane: DetNet, TE-Tunnels, MPLS, Segment Routing VPNs, NVO3 etc.
- Controller and/or control plane: ACTN, PCE and RSVP-TE (requiring LDP, BG= P, OSPF awareness at level below) etc.
- Management plane: YANG, OAM etc.

The foundation of COMS is a technology-independent and resource-centric man= agement plane. In reality, the network slice provider may have diverse tech= nology choices in different domains due to geographical and commercial reas= ons. Therefore, COMS makes no assumption on which technology is used for specific domains. The goal of COMS is to d= efine a common and inter-operative management mechanism, which is essential= for the concept of network slicing being adopted in a system with heteroge= neous network infrastructures and services functions. Major characteristics include:
- Enabling composition of slices within a single or over multiple domains.<= br> - Allowing the operation and management of a network slice in a uniform man= ner, even when this network slice span multiple technology and/or administr= ative domains.
- Enabling deployment of services over individual slices.

II. Scope

The WG will describe an overall architecture for network slicing. To manage= network slices in a technology-independent manner, the network slice provi= der (NSP) will need to communicate with a network slice orchestrator (NSO) = over a COMS Service Delivery Interface (SDI). The COMS SDI can also be used between network slice orchestrators, = enabling hierarchical management through the notion of network slice subnet= s. Network slices will be leased to tenants, which will be able to use Cust= omer Service Interface (CSI) exposed by the NS provider to run management tasks (e.g., on-demand measurement) w= ithin their slice instance under certain policies.

The WG will describe an information model representing a network slice, acc= ounting for the key elements used in network slices: connectivity, compute,= storage resources, network and service functions — this information = model includes the representation of managed objects and corresponding management and operations, will guide the design= of data models on SDI and CSI and also will enable orchestrators interwork= ing.

The WG will specify requirements, operations and management functionalities= on network slicing interfaces SDI and/or CSI including:
1 Network slice service profile, e.g. set by NSP over SDI, including high-l= evel parameters for network infrastructures and service functions, together= with their corresponding performance requirements.
2 Lifecycle management of network slice.
3 Other FCAPS functions. An important task of NSP is to aggregate faults, p= erformance, status information and performance guarantees for certain servi= ces.
4 Slice composition or stitching in multi-domain environment.
5 Slice management by the tenant under the control of NSP, including deploy= ing network services over a slice.

The WG will specify requirements and functionalities of data plane entities= as needed to enable the management of network slices. For example, this ma= y include abstractions of policy control and enforcement, or gateway functi= onalities. The WG will also study the mapping between the abstract information model and managed entities, a= nd will liaise with other IETF WGs as needed. However, the WG will not atte= mpt to replicate data plane technologies including DetNet, TE-Tunnels, MPLS= , Segment Routing VPNs, NVO3 etc.

III. Deliverables

WG deliverables are listed below and may be split in any number of document= s as determined by the WG:
- Problem statement and use cases for management of network slices.
- Architecture of network slices.
- Information model(s) and operations for network slices on topics describe= d above in the scope section.
- SDI and CSI interface specifications and relevant YANG models.
- Study the mappings of technology independent network equipment configurat= ions derived from the information model towards specific technologies and c= oordination with relevant WGs as needed.

IV. Milestones

Dec 2018     Problem Statement, use cases and architect= ure
Dec 2018     Common information model and related YANG = model
June 2019    Network slices composition and interworking
October 2019 FCAPS management functions and operations on network
             sl= ices including abstractions of policy control and
             en= forcement, or gateway functionalities.
March 2020   SDI and CSI interface specifications and relevant YA= NG models

 

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

--_000_7AEB3D6833318045B4AE71C2C87E8E173CF94DF4sjceml521mbschi_-- From nobody Wed Jan 31 09:25:17 2018 Return-Path: X-Original-To: netslices@ietfa.amsl.com Delivered-To: netslices@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 7915F12EC74 for ; Wed, 31 Jan 2018 09:25:15 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -4.228 X-Spam-Level: X-Spam-Status: No, score=-4.228 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, HK_RANDOM_ENVFROM=0.001, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_MED=-2.3, RCVD_IN_MSPIKE_H3=-0.01, RCVD_IN_MSPIKE_WL=-0.01, SPF_PASS=-0.001, T_RP_MATCHES_RCVD=-0.01, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id BdojMW5wE8Ol for ; Wed, 31 Jan 2018 09:25:07 -0800 (PST) Received: from huawei.com (lhrrgout.huawei.com [194.213.3.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 19BCB12EC53 for ; Wed, 31 Jan 2018 09:24:48 -0800 (PST) Received: from lhreml701-cah.china.huawei.com (unknown [172.18.7.108]) by Forcepoint Email with ESMTP id 0714495967EEB for ; Wed, 31 Jan 2018 17:24:45 +0000 (GMT) Received: from SJCEML703-CHM.china.huawei.com (10.208.112.39) by lhreml701-cah.china.huawei.com (10.201.108.42) with Microsoft SMTP Server (TLS) id 14.3.361.1; Wed, 31 Jan 2018 17:24:45 +0000 Received: from SJCEML521-MBS.china.huawei.com ([169.254.2.168]) by SJCEML703-CHM.china.huawei.com ([169.254.5.179]) with mapi id 14.03.0382.000; Wed, 31 Jan 2018 09:24:37 -0800 From: Leeyoung To: Xavier de Foy , Liang GENG , Jeff Tantsura CC: Kiran.Makhijani , Pedro Martinez-Julia , =?utf-8?B?Q2FybG9zIEplc8O6cyBCZXJuYXJkb3MgQ2Fubw==?= , "NetSlices@ietf.org" , "qiangli (D)" Thread-Topic: [Netslices] Preliminary charter text for discussion Thread-Index: AQHTl5eHHxrSxL2LX02p2vK4T3hqBqOKILoAgAGaPQCAAKMFAIAAYjuAgABSiACAADlLAIAAIQQAgAAHFYCAALPqgIAAc+WAgAASUACAAA7AgP//hF9A Date: Wed, 31 Jan 2018 17:24:36 +0000 Message-ID: <7AEB3D6833318045B4AE71C2C87E8E173CF94E0B@sjceml521-mbs.china.huawei.com> References: <1517163726.4051.23.camel@it.uc3m.es> <20180130043352.GB15400@spectre> <1517307927.3201.7.camel@it.uc3m.es> <49297C39-EF21-4D3E-898B-4728B61221BB@huawei.com> <06C389826B926F48A557D5DB5A54C4ED2A5F8047@dggemi509-mbx.china.huawei.com> <96DCDC2D-6F10-4C7E-A82E-3B868F55E23D@gmail.com> In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.218.137.166] Content-Type: multipart/alternative; boundary="_000_7AEB3D6833318045B4AE71C2C87E8E173CF94E0Bsjceml521mbschi_" MIME-Version: 1.0 X-CFilter-Loop: Reflected Archived-At: Subject: Re: [Netslices] Preliminary charter text for discussion X-BeenThere: netslices@ietf.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: "This list is intended for discussion and review of network slicing at IETF." 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Precedence: list List-Id: "This list is intended for discussion and review of network slicing at IETF." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 01 Feb 2018 06:23:24 -0000 --_000_PS1PR0601MB14830BDB3242BE7F5FEA9A0C87FA0PS1PR0601MB1483_ Content-Type: text/plain; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable Hi Young, I believe that our discussion has different reference points for SBI. I might be wrong but I understand that by saying SBI you mean device config= uration model. At this point we are aligned, as Jeff and Xavier also pointe= d out, that COMS will not duplicate these device model works. Best wishes Liang ________________________________ From: Leeyoung Sent: 01 February 2018 01:17:23 To: Liang GENG; Jeff Tantsura; qiangli (D); Xavier de Foy; Kiran.Makhijani Cc: Pedro Martinez-Julia; Carlos Jes=FAs Bernardos Cano; NetSlices@ietf.org Subject: RE: [Netslices] Preliminary charter text for discussion Hi Liang, The SBI work in TEAS has IP/MPLS, Segment Routing, OTN, WDM (with CCAMP) in= scope. What is technology-independent, generic data plane on SBI? We canno= t really separate data plane technology from the model on SBI. Thanks. Young From: Netslices [mailto:netslices-bounces@ietf.org] On Behalf Of Liang GENG Sent: Wednesday, January 31, 2018 9:54 AM To: Jeff Tantsura ; qiangli (D) ; Xavier de Foy ; Kiran.Makhijani Cc: Pedro Martinez-Julia ; Carlos Jes=FAs Bernardos Cano = ; NetSlices@ietf.org Subject: Re: [Netslices] Preliminary charter text for discussion Hi Jeff and all, I think what COMS is dealing with in terms of SBI is more relevant to netwo= rk configuration models. Technology-dependent ones may be done in existing WGs (i.e. TEAS-ACTN) whil= st COMS may endeavor to examine generic ones. Best wishes Liang ________________________________ From: Netslices > on behalf of Jeff Tantsura > Sent: 31 January 2018 22:48:09 To: qiangli (D); Xavier de Foy; Kiran.Makhijani Cc: Pedro Martinez-Julia; NetSlices@ietf.org; Ca= rlos Jes=FAs Bernardos Cano Subject: Re: [Netslices] Preliminary charter text for discussion Hi Christina, My point =96 you should never be dealing with device models directly, irres= pectively of where they were developed. Cheers, Jeff From: "qiangli (D)" > Date: Wednesday, January 31, 2018 at 02:53 To: Jeff Tantsura >= , Xavier de Foy >, "K= iran.Makhijani" > Cc: Pedro Martinez-Julia >, Carlo= s Jes=FAs Bernardos Cano >, "NetSli= ces@ietf.org" > Subject: RE: [Netslices] Preliminary charter text for discussion Hi Jeff, I think we may understand this sentence from another perspective. As you sa= id, there are a number of network/device configuration models, and their ex= tension/mapping work is better to be done in corresponding WGs. For those t= echnologies that are not chartered by relevant WGs, the mapping/extension w= ork could be done in COMS if needed. What do you think? Best regards, Cristina QIANG From: Netslices [mailto:netslices-bounces@ietf.org] On Behalf Of Jeff Tants= ura Sent: Wednesday, January 31, 2018 5:09 AM To: Xavier de Foy >; = Kiran.Makhijani > Cc: Pedro Martinez-Julia >; Carlo= s Jes=FAs Bernardos Cano >; NetSlic= es@ietf.org Subject: Re: [Netslices] Preliminary charter text for discussion Hi, I don=92t think this is right thing to do, device models would be number of= layers below where you=92d be operating. You might use draft-ietf-opsawg-service-model-explained as a reference. Cheers, Jeff From: Netslices > on behalf of Xavier de Foy > Date: Tuesday, January 30, 2018 at 15:44 To: "Kiran.Makhijani" > Cc: Pedro Martinez-Julia >, "NetS= lices@ietf.org" >, Carlos Jes=FAs Bernardos Cano > Subject: Re: [Netslices] Preliminary charter text for discussion Thanks Kiran, yes, I think one example is draft-homma-coms-slice-gateway, w= hich looks at the technology-independent requirements on some data plane eq= uipment. One interest of this is to help determine the appropriate abstract= ions and attributes to use in the models. Your wording looks good but I guess we can wait a bit longer for other comm= ents (here on the list and during tomorrow's COMS proponents meeting). Best Regards, Xavier. On Tue, Jan 30, 2018 at 1:45 PM, Kiran.Makhijani > wrote: Xavier, This statement may need some additional clarity. =93Study the mappings of technology independent network equipment configura= tions derived from the information model towards specific technologies and = coordination with relevant WGs as needed.=94 I think what you are trying to say is that equipment configurations may nee= d some work to provide slices related capabilities and support. Am I correc= t? If yes, then instead of use of =93study=94, we could say something to the e= ffect =93Identify and derive technology-independent network equipment confi= gurations from the Information model in coordination with relevant WGs as n= eeded=94. This shows a clear deliverable. -Kiran From: Netslices > on behalf of Xavier de Foy > Date: Tuesday, January 30, 2018 at 7:22 AM To: Carlos Jes=FAs Bernardos Cano > Cc: Pedro Martinez-Julia >, "NetS= lices@ietf.org" > Subject: Re: [Netslices] Preliminary charter text for discussion Thanks for clarifying the text Pedro. For reference and as base for future = comments, here is a fixed version of the full text with your wording. Regards, Xavier. I. Context A network slice is a set of related infrastructure resources and service fu= nctions with qualities that respond to specific requirements, being able to= cross multiple domains and use heterogeneous technologies. The goal of thi= s group is to produce and promote a technology-independent and resource-cen= tric management plane for network slices. Resources associated with a netwo= rk slice are normally comprised of physical and logical connections in acce= ss, aggregation and backbone networks as well as computing and storage elem= ents. Service functions associated with a network slice include network fun= ctions and network function chains pre-defined using corresponding network = infrastructure elements. A "Network Slice" is realized using a collection of technologies spanning a= cross data, control and management planes. Many of them rely on existing IE= TF technologies including both concluded and in-progress works such as: - Data plane: DetNet, TE-Tunnels, MPLS, Segment Routing VPNs, NVO3 etc. - Controller and/or control plane: ACTN, PCE and RSVP-TE (requiring LDP, BG= P, OSPF awareness at level below) etc. - Management plane: YANG, OAM etc. The foundation of COMS is a technology-independent and resource-centric man= agement plane. In reality, the network slice provider may have diverse tech= nology choices in different domains due to geographical and commercial reas= ons. Therefore, COMS makes no assumption on which technology is used for sp= ecific domains. The goal of COMS is to define a common and inter-operative = management mechanism, which is essential for the concept of network slicing= being adopted in a system with heterogeneous network infrastructures and s= ervices functions. Major characteristics include: - Enabling composition of slices within a single or over multiple domains. - Allowing the operation and management of a network slice in a uniform man= ner, even when this network slice span multiple technology and/or administr= ative domains. - Enabling deployment of services over individual slices. II. Scope The WG will describe an overall architecture for network slicing. To manage= network slices in a technology-independent manner, the network slice provi= der (NSP) will need to communicate with a network slice orchestrator (NSO) = over a COMS Service Delivery Interface (SDI). The COMS SDI can also be used= between network slice orchestrators, enabling hierarchical management thro= ugh the notion of network slice subnets. Network slices will be leased to t= enants, which will be able to use Customer Service Interface (CSI) exposed = by the NS provider to run management tasks (e.g., on-demand measurement) wi= thin their slice instance under certain policies. The WG will describe an information model representing a network slice, acc= ounting for the key elements used in network slices: connectivity, compute,= storage resources, network and service functions =97 this information mode= l includes the representation of managed objects and corresponding manageme= nt and operations, will guide the design of data models on SDI and CSI and = also will enable orchestrators interworking. The WG will specify requirements, operations and management functionalities= on network slicing interfaces SDI and/or CSI including: 1 Network slice service profile, e.g. set by NSP over SDI, including high-l= evel parameters for network infrastructures and service functions, together= with their corresponding performance requirements. 2 Lifecycle management of network slice. 3 Other FCAPS functions. An important task of NSP is to aggregate faults, p= erformance, status information and performance guarantees for certain servi= ces. 4 Slice composition or stitching in multi-domain environment. 5 Slice management by the tenant under the control of NSP, including deploy= ing network services over a slice. The WG will specify requirements and functionalities of data plane entities= as needed to enable the management of network slices. For example, this ma= y include abstractions of policy control and enforcement, or gateway functi= onalities. The WG will also study the mapping between the abstract informat= ion model and managed entities, and will liaise with other IETF WGs as need= ed. However, the WG will not attempt to replicate data plane technologies i= ncluding DetNet, TE-Tunnels, MPLS, Segment Routing VPNs, NVO3 etc. III. Deliverables WG deliverables are listed below and may be split in any number of document= s as determined by the WG: - Problem statement and use cases for management of network slices. - Architecture of network slices. - Information model(s) and operations for network slices on topics describe= d above in the scope section. - SDI and CSI interface specifications and relevant YANG models. - Study the mappings of technology independent network equipment configurat= ions derived from the information model towards specific technologies and c= oordination with relevant WGs as needed. IV. Milestones Dec 2018 Problem Statement, use cases and architecture Dec 2018 Common information model and related YANG model June 2019 Network slices composition and interworking October 2019 FCAPS management functions and operations on network slices including abstractions of policy control and enforcement, or gateway functionalities. March 2020 SDI and CSI interface specifications and relevant YANG models _______________________________________________ Netslices mailing list Nets= lices@ietf.org https://www.ietf.org/mailman/list= info/netslices --_000_PS1PR0601MB14830BDB3242BE7F5FEA9A0C87FA0PS1PR0601MB1483_ Content-Type: text/html; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable

Hi Young,


I believe that our discu= ssion has different reference points for SBI.


I might be wrong but I understand= that by saying SBI you mean device configuration model. At this point= we are aligned, as Jeff and Xavier also pointed out, that COMS will not du= plicate these device model works.


Best wishes

Liang


From: Leeyoung <leeyoung= @huawei.com>
Sent: 01 February 2018 01:17:23
To: Liang GENG; Jeff Tantsura; qiangli (D); Xavier de Foy; Kiran.Mak= hijani
Cc: Pedro Martinez-Julia; Carlos Jes=FAs Bernardos Cano; NetSlices@i= etf.org
Subject: RE: [Netslices] Preliminary charter text for discussion
 

Hi Liang,

 

The SBI work in TEAS has IP/MPLS,= Segment Routing, OTN, WDM (with CCAMP) in scope. What is technology-indepe= ndent, generic data plane on SBI? We cannot really separate data plane technology from the model on SBI.

 

Thanks.

Young

 

From: Netslices [mailto:netslice= s-bounces@ietf.org] On Behalf Of Liang GENG
Sent: Wednesday, January 31, 2018 9:54 AM
To: Jeff Tantsura <jefftant.ietf@gmail.com>; qiangli (D) <q= iangli3@huawei.com>; Xavier de Foy <x.defoy.ietf@gmail.com>; Kiran= .Makhijani <Kiran.Makhijani@huawei.com>
Cc: Pedro Martinez-Julia <pedro@nict.go.jp>; Carlos Jes=FAs Be= rnardos Cano <cjbc@it.uc3m.es>; NetSlices@ietf.org
Subject: Re: [Netslices] Preliminary charter text for discussion

 

= Hi Jeff and all,

=  

= I think what COMS is dealing with in terms of SBI is more relevant to netwo= rk configuration models. 

=  

= Technology-dependent ones may be done in existing WGs (i.e. TEAS-ACTN)= whilst COMS may endeavor to examine generic ones.

=  

= Best wishes

= Liang

=  

=  

From: = Netslices <netslices-bounc= es@ietf.org> on behalf of Jeff Tantsura <= jefftant.ietf@gmail.com>
Sent: 31 January 2018 22:48:09
To: qiangli (D); Xavier de Foy; Kiran.Makhijani
Cc: Pedro Martinez-Julia; NetS= lices@ietf.org; Carlos Jes=FAs Bernardos Cano
Subject: Re: [Netslices] Preliminary charter text for discussion

 

Hi Christina,

 

My point =96 you should never be dealing with dev= ice models directly, irrespectively of where they were developed.

 

Cheers,

Jeff

= From: "qiangli (D)" &= lt;qiangli3@huawei.com>
Date: Wednesday, January 31, 2018 at 02:53
To: Jeff Tantsura <jef= ftant.ietf@gmail.com>, Xavier de Foy <x.defoy.ietf@gmail.com>, "Kiran.Makhijani" = <Kiran.Makhijani@huawei.co= m>
Cc: Pedro Martinez-Julia <ped= ro@nict.go.jp>, Carlos Jes=FAs Bernardos Cano <cjbc@it.uc3m.es>, "NetSlices@ietf.org" <NetSlices@ietf.org>
Subject: RE: [Netslices] Preliminary charter text for discussion

 

H= i Jeff,

&= nbsp;

I= think we may understand this sentence from another perspective. As you sai= d, there are a number of network/device configuration models, and their ext= ension/mapping work is better to be done in corresponding WGs. For those technologies that are not chartered b= y relevant WGs, the mapping/extension work could be done in COMS if needed.= What do you think?

&= nbsp;

B= est regards,

C= ristina QIANG

&= nbsp;

From: Netslices [mailto:netslices-bounces@ietf.org] On Behalf Of Jeff Tantsura
Sent: Wednesday, January 31, 2018 5:09 AM
To: Xavier de Foy <x.de= foy.ietf@gmail.com>; Kiran.Makhijani <Kiran.Makhijani@huawei.com>
Cc: Pedro Martinez-Julia <ped= ro@nict.go.jp>; Carlos Jes=FAs Bernardos Cano <cjbc@it.uc3m.es>; NetSlices@ietf.org
Subject: Re: [Netslices] Preliminary charter text for discussion

 

Hi,

 

I don=92t think this is right thing to do, device= models would be number of layers below where you=92d be operating.

You might use draft-ietf-opsawg-service-model-exp= lained as a reference.

 

Cheers,

Jeff

= From: Netslices <= netslices-bounces@ietf.org> on behalf of Xavier de Foy <x.defoy.ietf@gmail.com>
Date: Tuesday, January 30, 2018 at 15:44
To: "Kiran.Makhijani" <Kiran.Makhijani@huawe= i.com>
Cc: Pedro Martinez-Julia <pedro@nict.go.jp>, "NetSlices@ietf.org= " <NetSlices@ietf.org>, Carlos Jes=FAs Bernardos Cano <cjbc@it.uc3m.es<= span style=3D"font-size:12.0pt; color:black">>
Subject: Re: [Netslices] Preliminary charter text for discussion

 

 

On Tue, Jan 30, 2018 at 1:45 PM, Kiran.Makhijani = <Kiran.M= akhijani@huawei.com> wrote:

Xavier,

This statement may need some additional clar= ity.

=93Study the mappings of techno= logy independent network equipment configurations derived from the informat= ion model towards specific technologies and coordination with relevant WGs as needed.=94

 

I think what you are trying to say is that e= quipment configurations may need some work to provide slices related capabi= lities and support. Am I correct?

If yes, then instead of use of =93study=94, = we could say something to the effect =93Identify and derive technology-inde= pendent network equipment configurations from the Information model in coordination with relevant WGs as needed=94. This shows a clear d= eliverable.

 

-Kiran

From: Netslices <netslices-bounces@ietf.org> on behalf of Xavier de Foy <x.defoy.ietf@gmail.com>
Date: Tuesday, January 30, 2018 at 7:22 AM
To: Carlos Jes=FAs Bernardos Cano <cjbc@it.uc3m= .es>
Cc: Pedro Martinez-Julia <pedro@nict.go.jp>, "NetSlices@ietf.org" <NetSlices@ietf.org>
Subject: Re: [Netslices] Preliminary charter text for discussion

 

Xavier.


I. Context

A network slice is a set of related infrastructure resources and service fu= nctions with qualities that respond to specific requirements, being able to= cross multiple domains and use heterogeneous technologies. The goal of thi= s group is to produce and promote a technology-independent and resource-centric management plane for network= slices. Resources associated with a network slice are normally comprised o= f physical and logical connections in acces= s, aggregation and backbone networks as well as computing and storage eleme= nts. Service functions associated with a network slice include network func= tions and network function chains pre-defined using corresponding network infrastructure elements.
A "Network Slice" is realized using a collection of technologies = spanning across data, control and management planes. Many of them rely on e= xisting IETF technologies including both concluded and in-progress works su= ch as:
- Data plane: DetNet, TE-Tunnels, MPLS, Segment Routing VPNs, NVO3 etc.
- Controller and/or control plane: ACTN, PCE and RSVP-TE (requiring LDP, BG= P, OSPF awareness at level below) etc.
- Management plane: YANG, OAM etc.

The foundation of COMS is a technology-independent and resource-centric man= agement plane. In reality, the network slice provider may have diverse tech= nology choices in different domains due to geographical and commercial reas= ons. Therefore, COMS makes no assumption on which technology is used for specific domains. The goal of COMS is to d= efine a common and inter-operative management mechanism, which is essential= for the concept of network slicing being adopted in a system with heteroge= neous network infrastructures and services functions. Major characteristics include:
- Enabling composition of slices within a single or over multiple domains.<= br> - Allowing the operation and management of a network slice in a uniform man= ner, even when this network slice span multiple technology and/or administr= ative domains.
- Enabling deployment of services over individual slices.

II. Scope

The WG will describe an overall architecture for network slicing. To manage= network slices in a technology-independent manner, the network slice provi= der (NSP) will need to communicate with a network slice orchestrator (NSO) = over a COMS Service Delivery Interface (SDI). The COMS SDI can also be used between network slice orchestrators, = enabling hierarchical management through the notion of network slice subnet= s. Network slices will be leased to tenants, which will be able to use Cust= omer Service Interface (CSI) exposed by the NS provider to run management tasks (e.g., on-demand measurement) w= ithin their slice instance under certain policies.

The WG will describe an information model representing a network slice, acc= ounting for the key elements used in network slices: connectivity, compute,= storage resources, network and service functions =97 this information mode= l includes the representation of managed objects and corresponding management and operations, will guide the design= of data models on SDI and CSI and also will enable orchestrators interwork= ing.

The WG will specify requirements, operations and management functionalities= on network slicing interfaces SDI and/or CSI including:
1 Network slice service profile, e.g. set by NSP over SDI, including high-l= evel parameters for network infrastructures and service functions, together= with their corresponding performance requirements.
2 Lifecycle management of network slice.
3 Other FCAPS functions. An important task of NSP is to aggregate faults, p= erformance, status information and performance guarantees for certain servi= ces.
4 Slice composition or stitching in multi-domain environment.
5 Slice management by the tenant under the control of NSP, including deploy= ing network services over a slice.

The WG will specify requirements and functionalities of data plane entities= as needed to enable the management of network slices. For example, this ma= y include abstractions of policy control and enforcement, or gateway functi= onalities. The WG will also study the mapping between the abstract information model and managed entities, a= nd will liaise with other IETF WGs as needed. However, the WG will not atte= mpt to replicate data plane technologies including DetNet, TE-Tunnels, MPLS= , Segment Routing VPNs, NVO3 etc.

III. Deliverables

WG deliverables are listed below and may be split in any number of document= s as determined by the WG:
- Problem statement and use cases for management of network slices.
- Architecture of network slices.
- Information model(s) and operations for network slices on topics describe= d above in the scope section.
- SDI and CSI interface specifications and relevant YANG models.
- Study the mappings of technology independent network equipment configurat= ions derived from the information model towards specific technologies and c= oordination with relevant WGs as needed.

IV. Milestones

Dec 2018     Problem Statement, use cases and architect= ure
Dec 2018     Common information model and related YANG = model
June 2019    Network slices composition and interworking
October 2019 FCAPS management functions and operations on network
             sl= ices including abstractions of policy control and
             en= forcement, or gateway functionalities.
March 2020   SDI and CSI interface specifications and relevant YA= NG models

 

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

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