GS NFV-SWA 001 - V1.1.1 - Network Functions Virtualisation (NFV

ETSI GS NFV-SWA 001 V1.1.1 (2014-12)

Network Functions Virtualisation (NFV); Virtual Network Functions Architecture

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This document has been produced and approved by the Network Functions Virtualisation (NFV) ETSI Industry Specification Group (ISG) and represents the views of those members who participated in this ISG.

It does not necessarily represent the views of the entire ETSI membership.

GROUP SPECIFICATION

ETSI

ETSI GS NFV-SWA 001 V1.1.1 (2014-12)2

Reference DGS/NFV-SWA001

Keywords architecture, functional, NFV, requirements

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ETSI GS NFV-SWA 001 V1.1.1 (2014-12)3

Contents

Intellectual Property Rights ................................................................................................................................ 6

Foreword ............................................................................................................................................................. 6

Modal verbs terminology .................................................................................................................................... 6

1 Scope ........................................................................................................................................................ 7

2 References ................................................................................................................................................ 7 2.1 Normative references ......................................................................................................................................... 7 2.2 Informative references ........................................................................................................................................ 7

3 Definitions and abbreviations ................................................................................................................... 9 3.1 Definitions .......................................................................................................................................................... 9 3.2 Abbreviations ................................................................................................................................................... 10

4 Overview of VNF in the NFV Architecture ........................................................................................... 12 4.1 Introduction ...................................................................................................................................................... 12 4.2 VNF Architecture ............................................................................................................................................. 13 4.3 Interfaces .......................................................................................................................................................... 15 4.3.1 VNF Interfaces and NFV Architectural Framework Reference Points ....................................................... 15 4.3.2 SWA-1 Interfaces ....................................................................................................................................... 17 4.3.3 SWA-2 Interfaces ....................................................................................................................................... 18 4.3.4 SWA-3 Interfaces ....................................................................................................................................... 18 4.3.5 SWA-4 Interfaces ....................................................................................................................................... 19 4.3.6 SWA-5 Interfaces ....................................................................................................................................... 19

5 VNF Design Patterns and Properties ...................................................................................................... 20 5.1 VNF Design Patterns ........................................................................................................................................ 20 5.1.1 VNF Internal Structure ............................................................................................................................... 20 5.1.2 VNF Instantiation ....................................................................................................................................... 21 5.1.3 VNFC States ............................................................................................................................................... 21 5.1.4 VNF Load Balancing Models ..................................................................................................................... 22 5.1.5 VNF Scaling Models .................................................................................................................................. 24 5.1.6 VNF Component Re-Use ............................................................................................................................ 25 5.2 VNF Update and Upgrade ................................................................................................................................ 27 5.2.1 VNF Update and Upgrade Overview .......................................................................................................... 27 5.2.2 VNF Update & Upgrade Requirements for VNF Provider ......................................................................... 27 5.3 VNF's Properties .............................................................................................................................................. 27 5.3.1 Hardware Independence ............................................................................................................................. 27 5.3.2 Virtualisation and Container Awareness..................................................................................................... 28 5.3.3 Elasticity ..................................................................................................................................................... 28 5.3.4 Void ............................................................................................................................................................ 29 5.3.5 VNF Policy Management ........................................................................................................................... 29 5.3.6 Migration operations ................................................................................................................................... 29 5.3.7 VNF State ................................................................................................................................................... 30 5.3.8 VNF Internal Structure ............................................................................................................................... 30 5.3.9 Reliability ................................................................................................................................................... 30 5.3.10 Location Awareness .................................................................................................................................... 30 5.3.11 Application Management ............................................................................................................................ 30 5.3.12 Diversity and Evolution of VNF Properties ............................................................................................