IETF Definition of Transport Slice
draft-nsdt-teas-transport-slice-definition-03

The information below is for an old version of the document
Document Type Active Internet-Draft (candidate for teas WG)
Authors Reza Rokui  , Shunsuke Homma  , Kiran Makhijani  , Luis Contreras  , Jeff Tantsura 
Last updated 2020-08-19 (latest revision 2020-07-12)
Replaced by draft-nsdt-teas-ietf-network-slice-definition
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teas                                                            R. Rokui
Internet-Draft                                                     Nokia
Intended status: Informational                                  S. Homma
Expires: January 13, 2021                                            NTT
                                                            K. Makhijani
                                                               Futurewei
                                                           LM. Contreras
                                                              Telefonica
                                                             J. Tantsura
                                                            Apstra, Inc.
                                                           July 12, 2020

                   IETF Definition of Transport Slice
             draft-nsdt-teas-transport-slice-definition-03

Abstract

   This document describes the definition of a slice in the transport
   networks and its characteristics.  The purpose here is to bring
   clarity and a common understanding of the transport slice concept and
   describe related terms and their meaning.  It explains how transport
   slices can be used in combination with end to end network slices, or
   independently.

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
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   This Internet-Draft will expire on January 13, 2021.

Copyright Notice

   Copyright (c) 2020 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

Rokui, et al.           Expires January 13, 2021                [Page 1]
Internet-Draft    draft-nsdt-transport-slice-definition        July 2020

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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
     1.1.  Rationale . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Terms and Abbreviations . . . . . . . . . . . . . . . . . . .   3
   3.  Definition and Scope of Transport Slice . . . . . . . . . . .   4
   4.  Transport Slice System Characteristics  . . . . . . . . . . .   5
     4.1.  Service Level Objectives for Transport Slices . . . . . .   5
       4.1.1.  Minimal Set of SLOs . . . . . . . . . . . . . . . . .   5
       4.1.2.  Other Objectives  . . . . . . . . . . . . . . . . . .   7
     4.2.  Transport Slice Endpoints . . . . . . . . . . . . . . . .   8
       4.2.1.  Transport Slice Connectivity Types  . . . . . . . . .   9
     4.3.  Vertical Composition of Transport Slice . . . . . . . . .   9
     4.4.  Horizontal Composition of Transport Slice . . . . . . . .  11
   5.  Transport Slice Structure . . . . . . . . . . . . . . . . . .  11
     5.1.  Stakeholders  . . . . . . . . . . . . . . . . . . . . . .  13
     5.2.  Transport Slice Controller Interfaces . . . . . . . . . .  14
     5.3.  Transport slice Realization . . . . . . . . . . . . . . .  15
   6.  Relationship with End-to-End Network Slicing  . . . . . . . .  15
   7.  Security Considerations . . . . . . . . . . . . . . . . . . .  17
   8.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  17
   9.  Acknowledgment  . . . . . . . . . . . . . . . . . . . . . . .  17
   10. Informative References  . . . . . . . . . . . . . . . . . . .  17
   Appendix A.  Discussions  . . . . . . . . . . . . . . . . . . . .  19
     A.1.  On Isolation Requirements In a Transport Slice  . . . . .  19
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  20

1.  Introduction

   A number of use cases benefit from establishing network connectivity
   providing transport and assurance of a specific set of network
   resources.  In this document, as detailed in the subsequent sections,
   we refer to this connectivity and resource commitment as the
   transport slice.  Services that might benefit from the transport
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