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    ETSI GS NFV-SWA 001-2014 Network Functions Virtualisation (NFV) Virtual Network Functions Architecture (V1 1 1)《网络虚拟化技术 (NFV) 虚拟网络功能体系结构 (V1 1 1)》.pdf

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    ETSI GS NFV-SWA 001-2014 Network Functions Virtualisation (NFV) Virtual Network Functions Architecture (V1 1 1)《网络虚拟化技术 (NFV) 虚拟网络功能体系结构 (V1 1 1)》.pdf

    1、 ETSI GS NFV-SWA 001 V1.1.1 (2014-12) Network Functions Virtualisation (NFV); Virtual Network Functions Architecture Disclaimer 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

    2、 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)2Reference DGS/NFV-SWA001 Keywords architecture, functional, NFV, requirements ETSI 650 Route des Lucioles F-06921 Sophia Antipolis C

    3、edex - FRANCE Tel.: +33 4 92 94 42 00 Fax: +33 4 93 65 47 16 Siret N 348 623 562 00017 - NAF 742 C Association but non lucratif enregistre la Sous-Prfecture de Grasse (06) N 7803/88 Important notice The present document can be downloaded from: http:/www.etsi.org The present document may be made avai

    4、lable in electronic versions and/or in print. The content of any electronic and/or print versions of the present document shall not be modified without the prior written authorization of ETSI. In case of any existing or perceived difference in contents between such versions and/or in print, the only

    5、 prevailing document is the print of the Portable Document Format (PDF) version kept on a specific network drive within ETSI Secretariat. Users of the present document should be aware that the document may be subject to revision or change of status. Information on the current status of this and othe

    6、r ETSI documents is available at http:/portal.etsi.org/tb/status/status.asp If you find errors in the present document, please send your comment to one of the following services: http:/portal.etsi.org/chaircor/ETSI_support.asp Copyright Notification No part may be reproduced or utilized in any form

    7、or by any means, electronic or mechanical, including photocopying and microfilm except as authorized by written permission of ETSI. The content of the PDF version shall not be modified without the written authorization of ETSI. The copyright and the foregoing restriction extend to reproduction in al

    8、l media. European Telecommunications Standards Institute 2014. All rights reserved. DECTTM, PLUGTESTSTM, UMTSTMand the ETSI logo are Trade Marks of ETSI registered for the benefit of its Members. 3GPPTM and LTE are Trade Marks of ETSI registered for the benefit of its Members and of the 3GPP Organiz

    9、ational Partners. GSM and the GSM logo are Trade Marks registered and owned by the GSM Association. ETSI ETSI GS NFV-SWA 001 V1.1.1 (2014-12)3Contents Intellectual Property Rights 6g3Foreword . 6g3Modal verbs terminology 6g31 Scope 7g32 References 7g32.1 Normative references . 7g32.2 Informative ref

    10、erences 7g33 Definitions and abbreviations . 9g33.1 Definitions 9g33.2 Abbreviations . 10g34 Overview of VNF in the NFV Architecture . 12g34.1 Introduction 12g34.2 VNF Architecture . 13g34.3 Interfaces 15g34.3.1 VNF Interfaces and NFV Architectural Framework Reference Points . 15g34.3.2 SWA-1 Interf

    11、aces . 17g34.3.3 SWA-2 Interfaces . 18g34.3.4 SWA-3 Interfaces . 18g34.3.5 SWA-4 Interfaces . 19g34.3.6 SWA-5 Interfaces . 19g35 VNF Design Patterns and Properties 20g35.1 VNF Design Patterns 20g35.1.1 VNF Internal Structure . 20g35.1.2 VNF Instantiation . 21g35.1.3 VNFC States . 21g35.1.4 VNF Load

    12、Balancing Models . 22g35.1.5 VNF Scaling Models 24g35.1.6 VNF Component Re-Use 25g35.2 VNF Update and Upgrade 27g35.2.1 VNF Update and Upgrade Overview 27g35.2.2 VNF Update Essential, or potentially Essential, IPRs notified to ETSI in respect of ETSI standards“, which is available from the ETSI Secr

    13、etariat. Latest updates are available on the ETSI Web server (http:/ipr.etsi.org). Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on

    14、 the ETSI Web server) which are, or may be, or may become, essential to the present document. Foreword This Group Specification (GS) has been produced by ETSI Industry Specification Group (ISG) Network Functions Virtualisation (NFV). Modal verbs terminology In the present document “shall“, “shall no

    15、t“, “should“, “should not“, “may“, “may not“, “need“, “need not“, “will“, “will not“, “can“ and “cannot“ are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of provisions). “must“ and “must not“ are NOT allowed in ETSI deliverables except when

    16、 used in direct citation. ETSI ETSI GS NFV-SWA 001 V1.1.1 (2014-12)71 Scope The present document objective is to identify the most common and relevant software architectural patterns present when virtualising network functions and therefore to identify and specify functional requirements necessary t

    17、o enable such patterns. The information consolidated is reflecting the experience from vendors and operators going through virtualisation of a number of network functions, with a focus on the use case list provided by the NFV Use Cases GS document i.7. The present document describes the Network Func

    18、tion Virtualisation abstract software architecture comprising of the following topics: Defining the functions, and interfaces of software architecture relative to the NFV overall architecture. Supporting Management and Orchestration Functional requirements. Supporting Infrastructure requirements. De

    19、scribing best practices for NFV Design. Functional Decomposition types and use cases. The present document does not provide any detailed specification. However, the present document makes reference to specifications developed by other bodies, gap, and to potential specifications. 2 References 2.1 No

    20、rmative references References are either specific (identified by date of publication and/or edition number or version number) or non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the referenced document (including any amendments

    21、) applies. Referenced documents which are not found to be publicly available in the expected location might be found at http:/docbox.etsi.org/Reference. NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee their long term validity. The follo

    22、wing referenced documents are necessary for the application of the present document. Not applicable. 2.2 Informative references References are either specific (identified by date of publication and/or edition number or version number) or non-specific. For specific references, only the cited version

    23、applies. For non-specific references, the latest version of the referenced document (including any amendments) applies. NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee their long term validity. The following referenced documents are not

    24、 necessary for the application of the present document but they assist the user with regard to a particular subject area. i.1 ETSI GS NFV-INF 001: “Network Functions Virtualisation (NFV); Infrastructure Overview“. i.2 ETSI GS NFV-INF 005: “Network Functions Virtualisation (NFV); Infrastructure; Netw

    25、ork Domain“. ETSI ETSI GS NFV-SWA 001 V1.1.1 (2014-12)8i.3 ETSI GS NFV-MAN 001: “Network Functions Virtualisation (NFV); Management and Orchestration“. i.4 ETSI GS NFV 002 (V1.1.1): “Network Functions Virtualisation (NFV); Architectural Framework“. i.5 ETSI GS NFV 004 (V1.1.1): “Network Functions Vi

    26、rtualisation (NFV); Virtualisation Requirements“. i.6 ETSI GS NFV 003 (V1.1.1): “Network Functions Virtualisation (NFV); Terminology for Main Concepts in NFV“. i.7 ETSI GS NFV 001 (V1.1.1): “Network Functions Virtualisation (NFV); Use Cases“. i.8 ETSI GS NFV-PER 001: “Network Functions Virtualisatio

    27、n (NFV); NFV Performance Resiliency Requirements“. i.10 Open Data Center Alliance, ODCA Service Orchestration Master Usage Model, ODCA. NOTE: Available at http:/www.opendatacenteralliance.org/docs/ODCA_Service_Orch_MasterUM_v1.0_Nov2012.pdf. i.11 ETSI TS 123 228: “Digital cellular telecommunications

    28、 system (Phase 2+); Universal Mobile Telecommunications System (UMTS); LTE; IP Multimedia Subsystem (IMS); Stage 2 (3GPP TS 23.228)“. i.12 ETSI TS 123 218: “Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); LTE; IP Multimedia (IM) session handl

    29、ing; IM call model; Stage 2 (3GPP TS 23.218)“. i.13 ISO/IEC 42010:2011: “Systems and Software Engineering - Architecture Description“. i.14 ATIS-I-0000044 (October 2013): “Operational opportunities and challenges of SDN/NFV programmable infrastructure“, section 4.2.1.1 “Service Provider Devops“. i.1

    30、5 ETSI TS 123 203: “Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); LTE; Policy and charging control architecture (3GPP TS 23.203)“. i.16 ETSI TS 132 251: “Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunicat

    31、ions System (UMTS); LTE; Telecommunication management; Charging management; Packet Switched (PS) domain charging (3GPP TS 32.251)“. i.17 ETSI TS 132 240: “Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); LTE; Telecommunication management; Char

    32、ging management; Charging architecture and principles (3GPP TS 32.240)“. i.18 Open Network Foundation, ONF. NOTE: Available at https:/www.opennetworking.org/sdn-resources/sdn-definition. i.19 PCI Single Route I/O Virtualization (SR-IOV). Online. NOTE: Available at http:/ i.20 Recommendation ITU-T H.

    33、248.1 (03/2013): “Gateway control protocol: Version 3“. i.21 Technical Report Draft TR H.Sup.OpenFlow (2014): “Protocol evaluation - OpenFlow versus H.248“. NOTE: Latest draft available at http:/wftp3.itu.int/av-arch/avc-site/2013-2016/1403_Gen/TD-19.zip. i.22 Recommendation ITU-T M.3050.1 (03/2007)

    34、: “Enhanced Telecom Operations Map (eTOM) - The business process framework“. ETSI ETSI GS NFV-SWA 001 V1.1.1 (2014-12)9i.23 Recommendation ITU-T M.3010 (02/2000): “Principles for a telecommunications management network“. i.24 Recommendation ITU-T M.3400 (02/2000): “TMN management functions“. i.25 Re

    35、commendation ITU-T X.700 (09/1992): “Management framework for Open Systems Interconnection (OSI) for CCITT applications“. i.26 ETSI GS NFV-PER 002 (V1.1.1): “Network Functions Virtualisation (NFV); Proofs of Concepts; Framework“. i.27 IETF RFC 3031 (January 2001): “Multiprotocol Label Switching Arch

    36、itecture“, E. Rosen, A. Viswanathan and R. Callon. i.28 IETF RFC 3069 (February 2001): “VLAN Aggregation for Efficient IP Address Allocation“, D. McPherson and B. Dykes. i.29 IETF RFC 3809 (June 2004): “Generic Requirements for Provider Provisioned Virtual Private Networks (PPVPN)“, A. Nagarajan. i.

    37、30 IETF RFC 4385 (February 2006): “Pseudowire Emulation Edge-to-Edge (PWE3) Control Word for Use over an MPLS PSN“, S. Bryant, G. Swallow, L. Martini and D. McPherson. i.31 IETF RFC 4464 (May 2006): “Signaling Compression (SigComp) Users Guide“, A. Surtees and M. West. i.32 IETF RFC 4761 (January 20

    38、07): “Virtual Private LAN Service (VPLS) Using BGP for Auto-Discovery and Signaling“, K. Kompella and Y. Rekhter. i.33 Recommendation ITU-T Y.3300 (06/2014): “Framework of software-defined networking“. i.34 ETSI TS 129 333: “Digital cellular telecommunications system (Phase 2+); Universal Mobile Tel

    39、ecommunications System (UMTS); Multimedia Resource Function Controller (MRFC) - Multimedia Resource Function Processor (MRFP) Mp interface; Stage 3 (3GPP TS 29.333)“. 3 Definitions and abbreviations 3.1 Definitions For the purposes of the present document, the following terms and definitions apply:

    40、compute node: See ETSI GS NFV-INF 001 i.1. Network Function (NF): See ETSI GS NFV 003 i.6. Network Function Virtualisation Infrastructure (NFVI): See ETSI GS NFV 003 i.6. Network Functions Virtualisation Orchestrator (NFVO): See ETSI GS NFV-MAN 001 i.3. NF Forwarding Graph: See ETSI GS NFV 003 i.6.

    41、NF Set: See ETSI GS NFV 003 i.6. Physical Network Function (PNF): See ETSI GS NFV 003 i.6. network service: See ETSI GS NFV 003 i.6. Virtual Machine (VM): See ETSI GS NFV 001 i.1. virtualisation container: partition of a compute node that provides an isolated virtualised computation environment NOTE

    42、: Examples of virtualisation container includes virtual machine and OS container. Virtualisation Deployment Unit (VDU): See ETSI GS NFV-MAN 001 i.3. ETSI ETSI GS NFV-SWA 001 V1.1.1 (2014-12)10Virtualised Network Function (VNF): See ETSI GS NFV 003 i.6. Virtualised Network Function Component (VNFC):

    43、See ETSI GS NFV 003 i.6. Virtualised Network Function Component (VNFC) Instance: See ETSI GS NFV 003 i.6. VNF Descriptor (VNFD): See ETSI GS NFV-MAN 001 i.3. VNF Forwarding Graph (VNF-FG): See ETSI GS NFV 003 i.6. VNF Instance: See ETSI GS NFV-MAN 001 i.3. VNF Network Connectivity Topology (VNF-NCT)

    44、: graph that defines the connectivity topology among (v)NFs by describing how its nodes are connected to one another VNF Package: See ETSI GS NFV-MAN 001 i.3. VNF Provider: entity that provides VNF Package(s) VNF Set: See ETSI GS NFV 003 i.6. 3.2 Abbreviations For the purposes of the present documen

    45、t, the following abbreviations apply: ADC Application Detection and Control API Application Programming Interface AppVM Application Virtual Machines ATM Asynchronous Transfer Mode BFCP Binary Floor Control Protocol BGP Border Gateway Protocol BGP-LS Border Gateway Protocol - Link State BRAS Broadban

    46、d Remote Access Server CDN Content Delivery Network COTS Commercial off the Shelf CPU Central Processing Unit CSCF Call Session Control Function DB DataBase DDoS Distributed Denial of Service DHCP Dynamic Host Configuration Protocol DNS Domain Nane Server DPDK Data Plane Development Kit DPI Deep Pac

    47、ket Inspection DRA Diameter Routing Agent DSCP Differentiated Services Code Point DSP Digital Signal Processor DSR Direct Server Return ELAN Ethernet Virtual Private LAN EM Element Management EPC Evolved Packet Core ETH Ethernet eTOM enhanced Telecom Operations Map EVPN Ethernet VPN FAB Fulfilment,

    48、Assurance, Billing FCAPS Fault, Configuration, Accounting, Performance, Security FORCES FOrwarding and Control Element Separation FRR Fast ReRoute GGSN Gateway GPRS Service Node GTP GPRS Tunnel Protocol GW Gateway HDW Hardware HTTP Hypertext Transfer Portocol HW Hardware ETSI ETSI GS NFV-SWA 001 V1.

    49、1.1 (2014-12)11I2SR Interface 2 the Routing System IB Infiniband IDPS Intrusion Detection And Prevention Systems IGMP Internet Group Management Protocol IGP Internet Gateway Protocol IMS IP Multimedia Subsystem IO Input Output IP Internet Protocol IPS Intrusion Prevention System ISA Industry Standard Architecture ISO International Organisation for Standardization IT Information Technology LAG Link Aggregation Groups LAN Lo


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