Interconnecting (or Stitching) Network Slice Subnets
draft-defoy-coms-subnet-interconnection-04

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Last updated 2020-03-08
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none                                                           X. de Foy
Internet-Draft                                                 A. Rahman
Intended status: Informational                         InterDigital Inc.
Expires: September 9, 2020                                      A. Galis
                                               University College London
                                                            K. Makhijani
                                                                L. Qiang
                                                     Huawei Technologies
                                                                S. Homma
                                                                     NTT
                                                       P. Martinez-Julia
                                                                    NICT
                                                           March 8, 2020

          Interconnecting (or Stitching) Network Slice Subnets
               draft-defoy-coms-subnet-interconnection-04

Abstract

   This document defines the network slice (NS) subnet as a general
   management plane concept that augments a baseline YANG network slice
   model with management attributes and operations enabling
   interconnections (or stitching) between network slices.  The
   description of NS subnet interconnections is technology agnostic, and
   is not tied to a particular implementation of the interconnection in
   data plane.

Status of This Memo

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   This Internet-Draft will expire on September 9, 2020.

de Foy, et al.          Expires September 9, 2020               [Page 1]
Internet-Draft               Network slicing                  March 2020

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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
     1.1.  Motivation and Roles of NS Subnet . . . . . . . . . . . .   3
     1.2.  Usage of NS Subnets . . . . . . . . . . . . . . . . . . .   3
     1.3.  Terminology . . . . . . . . . . . . . . . . . . . . . . .   5
   2.  Information Model . . . . . . . . . . . . . . . . . . . . . .   5
     2.1.  Base Information Model  . . . . . . . . . . . . . . . . .   5
     2.2.  Interconnection Anchors . . . . . . . . . . . . . . . . .   6
     2.3.  Interconnection Instances . . . . . . . . . . . . . . . .   8
     2.4.  Stitching Operation . . . . . . . . . . . . . . . . . . .   9
       2.4.1.  Operation Overview  . . . . . . . . . . . . . . . . .   9
       2.4.2.  Stitching Scenarios . . . . . . . . . . . . . . . . .  10
   3.  Security Considerations . . . . . . . . . . . . . . . . . . .  11
   4.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  11
   5.  Informative References  . . . . . . . . . . . . . . . . . . .  11
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  12

1.  Introduction

   Network Slicing enables deployment and management of services with
   diverse requirements on end-to-end partitioned virtual networks over
   the same infrastructure, including networking, compute and storage
   resources.  There were recent efforts in the IETF to define a
   transport slice ([I-D.nsdt-teas-transport-slice-definition]) and to
   define a north-bound interface for such a transport slice
   ([I-D.contreras-teas-slice-nbi]).  The mapping of transport slices in
   5G mobile systems is also studied in [I-D.clt-dmm-tn-aware-mobility]
   and [I-D.geng-teas-network-slice-mapping].

   Network slices may be managed through usage of YANG data models.  For
   example, [I-D.liu-teas-transport-network-slice-yang] describes how
   existing YANG models can be augmented with network slice attributes.
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