IETF Network Slice Intent
draft-contreras-nmrg-transport-slice-intent-04

Document Type Active Internet-Draft (individual)
Authors Luis Contreras  , Panagiotis Demestichas  , Jeff Tantsura 
Last updated 2020-11-02
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NMRG                                                       LM. Contreras
Internet-Draft                                                Telefonica
Intended status: Informational                            P. Demestichas
Expires: May 6, 2021                                               WINGS
                                                             J. Tantsura
                                                            Apstra, Inc.
                                                        November 2, 2020

                       IETF Network Slice Intent
             draft-contreras-nmrg-transport-slice-intent-04

Abstract

   Slicing at the transport network is expected to be offered as part of
   end-to-end network slices, fostered by the introduction of new
   services such as 5G.  This document explores the usage of intent
   technologies for requesting IETF network slices.

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 May 6, 2021.

Copyright Notice

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

   This document is subject to BCP 78 and the IETF Trust's Legal
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   (https://trustee.ietf.org/license-info) in effect on the date of
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   include Simplified BSD License text as described in Section 4.e of

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   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  IETF network slice intent . . . . . . . . . . . . . . . . . .   3
   3.  Foundation of IETF network slice intents  . . . . . . . . . .   3
   4.  Mechanisms for translating IETF network slice intents . . . .   4
     4.1.  Translation approaches and interaction with the upper
           systems . . . . . . . . . . . . . . . . . . . . . . . . .   4
     4.2.  Intent-based system suite . . . . . . . . . . . . . . . .   5
   5.  Security Considerations . . . . . . . . . . . . . . . . . . .   5
   6.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   5
   7.  References  . . . . . . . . . . . . . . . . . . . . . . . . .   5
   Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . . .   6
   Contributors  . . . . . . . . . . . . . . . . . . . . . . . . . .   6
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .   6

1.  Introduction

   Network slicing is emerging as the future model for service offering
   in telecom operator networks.  Conceptually, network slicing provides
   a customer with an apparent dedicated network built on top of logical
   (i.e. virtual) and/or physical functions and resources supported by a
   shared infrastructure, provided by one or more telecom operators.

   The concept of network slicing has been largely fostered by the
   advent of 5G services that are expected to be deployed on top of
   different kind of slices, each built to support specific
   characteristics (extreme low latency, high bandwidth, etc).

   As part of an end-to-end network slice it is expected to have a
   number of network slices at transport level (referred as IETF network
   slices) providing the necessary connectivity to the rest of
   components of the end-to-end slice, e.g., mobile packet core slice.

   For a definition of an IETF network slice refer to
   [I-D.nsdt-teas-ietf-network-slice-definition].  The following
   paragraph is directly taken from it: "An IETF Network Slice is a
   logical network topology connecting a number of endpoints with a set
   of shared or dedicated network resources, that are used to satisfy
   specific Service Level Objectives (SLOs)."

   Intent is a high-level, declarative goal that operates at the level
   of a network and services it provides, not individual devices.  It is
   used to define outcomes and high-level operational goals.

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