Subject: Re: [Netslices] some considerations for the next steps towards IETF101.

From: Alex Galis <[email-masked]>
Date: Sat, 23 Dec 2017 13:36:05 +0000

Hi All

Please find enclosed some additional considerations for the next steps towards IETF101.

The two presentations at the last IETF100 have highlighted the following new needed work:

1. Jari Arkko, Jeff Tantsura et all - Presentation: "Considerations on Network Virtualization and Slicing" (https://datatracker.ietf.org/meeting/100/materials/slides-100-rtgwg-sessa-draft-arkko-arch-virtualization/). Proposed new work:

• 1.1 Data models

• 1.2 Managing heterogeneous technologies, e.g., across SDN and traditionally built networks, or manage both general-purpose and very technology-specific virtualization parameters (e.g., VPNs + 5G radio)

• 1.3 New underlying VPN or API capabilities — e.g., ability to specify "statistical" rather than hard performance parameters

• 1.4 Cross-domain management and VPNs

• 1.5 Some terminology and conceptual alignment across industry would also be useful, e.g., to know what words to use in SLAs.

2. Liang Geng et all network slicing proponents - Presentation: "4 drafts from the netslicing proponents" (https://datatracker.ietf.org/meeting/100/materials/slides-100-opsawg-ietf100-netslicing-slides/). Proposed new work:

• 2.1 Review and feedback from the group and Update and consolidate drafts

• 2.2 Align terminologies among related drafts

• 2.3 (Common Operation and Management on network Slicing ) COMS-centric working items

•          2.3.1 Service delivery and network configuration model design (NBI/SBI of NS manager)

•          2.3.2 Interfaces and data model for Network slicing OAM interfaces and data models

o          Life-cycle management, fault detections, monitoring and etc.

o          Information exchange between multiple NS domain agents

•          2.3.3 Management capability exposure to NST

3. Additional feedback from Benoit: he recommended for the next steps to better clarify the positioning of COMS work in relation to the following 4 dimensions:

• 3.1 Better account of the 4 key elements used in COMS: connectivity, compute, storage resources + network & service functions

• 3.2 Better description of the functional blocks and heir positions used in COMS

• 3.3 FCAPS coverage

• 3.4 Coverage of the management of the dataplane

Taking into account all the above and in line with what was already discussed by Cristina/ Hannu/ Xavier/ Diego / Pedro / Kiran I trust that there is sufficient interest to progress on existing/new drafts for IETF101 and also as support for COMS BoF as follows:

Progress on existing COMS-centric drafts:

I.          consolidated management slicing architecture (i.e. issues 1.5, 2.2 and 3.2) objective based on existing drafts: https://tools.ietf.org/html/draft-geng-netslices-architecture-02 and draft-geng-coms-problem-statement-01 )

II.         consolidation of COMS Information model (issues 1.1 and 3.1) based on existing draft https://www.ietf.org/internet-drafts/draft-qiang-coms-netslicing-information-model-01.txt)

III.       consolidation of subnet interconnections and slice compositions based on https://tools.ietf.org/id/draft-defoy-coms-subnet-interconnection-01.tx

IV.        Refinements of slice management requirements based on draft-netslices-usecases-02

V.         Refinements & consolidation of FCAP coverage – issue 3.3 - based on draft-flinck-slicing-management-00

Starting some new COMS-centric drafts:

VI.        Service model mapping to an instance of a slice and its management – issue 2.3.1

VII.      Management capability exposure - issue 2.3.3 (i.e. this can be combined with (V)

VIII.     Cross domain management of slices -issue 1.4

IX.        Mapping COMS Information model to ACTN – issues 1.2, 3.4

Please note that “New underlying VPN or API capabilities” (issue 1.3 ) and how various existing IETF pieces fit together (service models... traffic engineering... detnetworking... ACTN…, VPN.++…) would be better addressed by RTG.

The NetSlicing proponents will start discussing and progressing the above work plan in weekly Wednesday at 13:00 London time WebCall starting with 10th January 2015. Please send an email if you are interested in joining our Netslicing proponents efforts. 

Thank you in advance

May I take this opportunity to thank you for your support and work at IETF and to wish you all Best Seasonal Greetings, a Happy 2018 Year and relaxing and enjoyable vacation time.

Best Regards

Alex