High-level VNF Descriptors using NEMO
draft-aranda-nfvrg-recursive-vnf-03

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NFVRG                                                P. Aranda Gutierrez
Internet-Draft                                                      UC3M
Intended status: Informational                                  D. Lopez
Expires: September 10, 2017                                   Telefonica
                                                              S. Salsano
                                          Univ. of Rome Tor Vergata/CNIT
                                                             E. Batanero
                                                              Telefonica
                                                          March 09, 2017

                 High-level VNF Descriptors using NEMO
                  draft-aranda-nfvrg-recursive-vnf-03

Abstract

   Current efforts in the scope of Network Function Virtualisation(NFV)
   propose YAML-based descriptors for Virtual Network Functions (VNFs)
   and for their composition in Network Services (NS) These descriptors
   are human-readable but hardly understandable by humans.  On the other
   hand, there has been an effort proposed to the IETF to define a
   human-readable (and understandable) representation for networks,
   known as NEMO.  In this draft, we propose a simple extension to NEMO
   to accommodate VNF Descriptors (VNFDs) in a similar manner as inline
   assembly is integrated in higher-level programming languages.

   This approach enables the creation of recursive VNF forwarding graphs
   in Service Descriptors, practically making them recursive.

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 September 10, 2017.

Aranda Gutierrez, et alExpires September 10, 2017               [Page 1]
Internet-Draft         High-level VNFDs with NEMO             March 2017

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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Terminology and abbreviations . . . . . . . . . . . . . . . .   3
   3.  Prior art . . . . . . . . . . . . . . . . . . . . . . . . . .   3
     3.1.  Virtual network function descriptors  . . . . . . . . . .   3
       3.1.1.  OpenMANO VNFDs  . . . . . . . . . . . . . . . . . . .   4
       3.1.2.  ETSI MANO VNFDs . . . . . . . . . . . . . . . . . . .   5
     3.2.  NEMO  . . . . . . . . . . . . . . . . . . . . . . . . . .   7
   4.  Additional requirements on NEMO . . . . . . . . . . . . . . .   8
     4.1.  Referencing VNFDs in a NodeModel  . . . . . . . . . . . .   8
     4.2.  Referencing the network interfaces of a VNF in a
           NodeModel . . . . . . . . . . . . . . . . . . . . . . . .   8
     4.3.  An example  . . . . . . . . . . . . . . . . . . . . . . .   8
   5.  Conclusion  . . . . . . . . . . . . . . . . . . . . . . . . .   9
   6.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  10
   7.  Security Considerations . . . . . . . . . . . . . . . . . . .  10
   8.  Acknowledgement . . . . . . . . . . . . . . . . . . . . . . .  10
   9.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  10
     9.1.  Normative References  . . . . . . . . . . . . . . . . . .  10
     9.2.  Informative References  . . . . . . . . . . . . . . . . .  10
     9.3.  URIs  . . . . . . . . . . . . . . . . . . . . . . . . . .  11
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  11

1.  Introduction

   Currently, there is a lot of on-going activity to deploy NFV in the
   network.  From the point of view of the orchestration, Virtual
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