Virtualization YANG Servise Model (VYSM)
draft-shytyi-netmod-vysm-02

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Last updated 2019-09-05
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Network Working Group                                          D. Shytyi
Internet-Draft                                                L. Beylier
Intended status: Informational                                SFR/ALTICE
Expires: March 7, 2020                                        L. IANNONE
                                                       Telecom ParisTech
                                                       September 4, 2019

                Virtualization YANG Servise Model (VYSM)
                      draft-shytyi-netmod-vysm-02

Abstract

   This document provides a specification of the Virtual Network
   Functions YANG Service Model (VYSM).  The VNF YANG Service Model
   serves as a base framework for managing an universal Customer-
   Premises Equipment (uCPE) NFV subsystem from the Orchestrator.

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
   and may be updated, replaced, or obsoleted by other documents at any
   time.  It is inappropriate to use Internet-Drafts as reference
   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on March 7, 2020.

Copyright Notice

   Copyright (c) 2019 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
   publication of this document.  Please review these documents
   carefully, as they describe your rights and restrictions with respect
   to this document.  Code Components extracted from this document must
   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.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   2
   3.  Universal CPE . . . . . . . . . . . . . . . . . . . . . . . .   3
   4.  Virtual Network Function YANG Service Model . . . . . . . . .   3
   5.  VNF YANG Service Model tree diagram overview  . . . . . . . .   4
   6.  Specification of the VNF YANG Service Model . . . . . . . . .   5
   7.  Security Considerations . . . . . . . . . . . . . . . . . . .   9
   8.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   9
   9.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .   9
   10. Normative References  . . . . . . . . . . . . . . . . . . . .  10
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  10

1.  Introduction

   Network Function Virtualization is a technology that allows to
   virtualize the network services running on dedicaded hardware.  This
   technology became a base for universal Customer-Premises
   Equipment(uCPE).  This document defines the uCPE as harware with x86
   capabilities (whitebox or greybox) that has a hypervisor.  In other
   words, uCPE is a host that may run multiple Virtual Machines with
   guest OSs, where each Guest OS may represent a Physical Network
   Function.  This document presents the VNF YANG Service Model (VYSM)
   to manage from an Orchestrator the Network Function Virtualization
   Infrastructure inside the uCPE.

2.  Terminology

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
   document are to be interpreted as described in RFC 2119 [RFC2119].

   Link - is an entity that enables link layer communication of nodes.

   Port - node connector to the link.

   NE - Network Element.

   NSYM - Network Service Yang Module.

   VYSM - VNF YANG Service Model.

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3.  Universal CPE

   Firstly, this document defines the platform that is controlled with
   VYSM - universal CPE (uCPE).  The uCPE as harware with x86
   capabilities that is generally running Linux distibution with
   additinal virtualisation layer.  Virtualization layer provides
   virtual compute, virtual storage and virtual network resources.  Each
   VNF runnning in the uCPE requires the amount of virtual resources
   (for example: 4 vCPUs, 4GB RAM, 40GB storege, 4 vPorts).  VNFs MAY be
   interconnected between each other and physical ports via Virtual
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