YANG Data Model for Network Slice Per-Hop Definition
draft-bestbar-teas-yang-ns-phd-00

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Authors Tarek Saad  , Vishnu Beeram 
Last updated 2020-11-02
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MPLS Working Group                                               T. Saad
Internet-Draft                                                 V. Beeram
Intended status: Standards Track                        Juniper Networks
Expires: May 6, 2021                                    November 2, 2020

          YANG Data Model for Network Slice Per-Hop Definition
                   draft-bestbar-teas-yang-ns-phd-00

Abstract

   This document defines a YANG data model for the management of Network
   Slice Per-Hop Definitions (Slice-PHDs) on network slicing capable
   nodes in IP/MPLS networks.

Requirements Language

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "NOT RECOMMENDED", "MAY", and
   "OPTIONAL" in this document are to be interpreted as described in BCP
   14 [RFC2119] [RFC8174] when, and only when, they appear in all
   capitals, as shown here.

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
   Provisions Relating to IETF Documents
   (https://trustee.ietf.org/license-info) in effect on the date of

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   publication of this document.  Please review these documents
   carefully, as they describe your rights and restrictions with respect
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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
     1.1.  Terminology . . . . . . . . . . . . . . . . . . . . . . .   3
     1.2.  Tree Structure  . . . . . . . . . . . . . . . . . . . . .   3
   2.  Network Slice Per-Hop Definition Model  . . . . . . . . . . .   3
     2.1.  Model Usage . . . . . . . . . . . . . . . . . . . . . . .   3
     2.2.  Model Structure . . . . . . . . . . . . . . . . . . . . .   3
     2.3.  Network Slice Per-Hop-Behaviors . . . . . . . . . . . . .   4
     2.4.  Network Slices  . . . . . . . . . . . . . . . . . . . . .   4
       2.4.1.  Slice Resource Reservation  . . . . . . . . . . . . .   5
       2.4.2.  Slice Selectors . . . . . . . . . . . . . . . . . . .   5
       2.4.3.  Slice Per-Hop-Behavior  . . . . . . . . . . . . . . .   6
       2.4.4.  Slice Membership  . . . . . . . . . . . . . . . . . .   6
     2.5.  YANG Module . . . . . . . . . . . . . . . . . . . . . . .   7
   3.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  25
   4.  Contributors  . . . . . . . . . . . . . . . . . . . . . . . .  25
   5.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  25
   6.  Security Considerations . . . . . . . . . . . . . . . . . . .  26
   7.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  27
     7.1.  Normative References  . . . . . . . . . . . . . . . . . .  27
     7.2.  Informative References  . . . . . . . . . . . . . . . . .  28
   Appendix A.  Complete Model Tree Structure  . . . . . . . . . . .  28
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  31

1.  Introduction

   Network slicing in IP/MPLS networks can be realized by partitioning
   the shared network resources in just the control plane or in just the
   data plane or in both the control and data planes
   [I-D.bestbar-teas-ns-packet].  The latter two approaches require the
   forwarding engine on each network slicing capable node to identify
   the traffic belonging to a specific slice and to apply the
   corresponding Slice Per-Hop Behavior (Slice-PHB) that determines the
   forwarding treatment of the packets belonging to the network slice.
   The identification of the slice that the packet belongs to and the
   corresponding forwarding treatment that needs to be applied to the
   packet is dictated by the Network Slice Per-Hop Definition (Slice-
   PHD) that is provisioned on each network slicing capable node.

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