Realizing Network Slices in IP/MPLS Networks
draft-bestbar-teas-ns-packet-01

Document Type Active Internet-Draft (individual)
Authors Tarek Saad  , Vishnu Beeram  , Bin Wen  , Daniele Ceccarelli  , Joel Halpern  , Shaofu Peng  , Ran Chen  , Xufeng Liu 
Last updated 2020-12-22
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TEAS Working Group                                               T. Saad
Internet-Draft                                                 V. Beeram
Intended status: Standards Track                        Juniper Networks
Expires: June 25, 2021                                            B. Wen
                                                                 Comcast
                                                           D. Ceccarelli
                                                              J. Halpern
                                                                Ericsson
                                                                 S. Peng
                                                                 R. Chen
                                                         ZTE Corporation
                                                                  X. Liu
                                                          Volta Networks
                                                       December 22, 2020

              Realizing Network Slices in IP/MPLS Networks
                    draft-bestbar-teas-ns-packet-01

Abstract

   Network slicing provides the ability to partition a physical network
   into multiple logical networks of varying sizes, structures, and
   functions so that each slice can be dedicated to specific services or
   customers.  Network slices need to operate in parallel while
   providing slice elasticity in terms of network resource allocation.
   The Differentiated Service (Diffserv) model allows for carrying
   multiple services on top of a single physical network by relying on
   compliant nodes to apply specific forwarding treatment (scheduling
   and drop policy) on to packets that carry the respective Diffserv
   code point.  This document proposes a solution based on the Diffserv
   model to realize network slicing in IP/MPLS networks.

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
   Task Force (IETF).  Note that other groups may also distribute
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   Drafts is at https://datatracker.ietf.org/drafts/current/.

   Internet-Drafts are draft documents valid for a maximum of six months
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   material or to cite them other than as "work in progress."

Saad, et al.              Expires June 25, 2021                 [Page 1]
Internet-Draft           IP/MPLS Network Slicing           December 2020

   This Internet-Draft will expire on June 25, 2021.

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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
     1.1.  Terminology . . . . . . . . . . . . . . . . . . . . . . .   4
     1.2.  Acronyms and Abbreviations  . . . . . . . . . . . . . . .   6
   2.  Network Resource Slicing Membership . . . . . . . . . . . . .   6
     2.1.  Dedicated Network Resources . . . . . . . . . . . . . . .   6
     2.2.  Shared Network Resources  . . . . . . . . . . . . . . . .   7
   3.  Path Selection  . . . . . . . . . . . . . . . . . . . . . . .   7
   4.  Slice Policy Modes  . . . . . . . . . . . . . . . . . . . . .   8
     4.1.  Data plane Slice Policy Mode  . . . . . . . . . . . . . .   8
     4.2.  Control Plane Slice Policy Mode . . . . . . . . . . . . .   9
     4.3.  Data and Control Plane Slice Policy Mode  . . . . . . . .  11
   5.  Slice Policy Instantiation  . . . . . . . . . . . . . . . . .  11
     5.1.  Slice Policy Definition . . . . . . . . . . . . . . . . .  12
       5.1.1.  Slice Policy Data Plane Selector  . . . . . . . . . .  13
       5.1.2.  Slice Policy Resource Reservation . . . . . . . . . .  17
       5.1.3.  Slice Policy Per Hop Behavior . . . . . . . . . . . .  18
       5.1.4.  Slice Policy Topology . . . . . . . . . . . . . . . .  19
     5.2.  Slice Policy Boundary . . . . . . . . . . . . . . . . . .  19
       5.2.1.  Slice Policy Edge Nodes . . . . . . . . . . . . . . .  19
       5.2.2.  Slice Policy Interior Nodes . . . . . . . . . . . . .  20
       5.2.3.  Slice Policy Incapable Nodes  . . . . . . . . . . . .  20
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