1、 ETSI GR NFV-IFA 022 V3.1.1 (2018-04) Network Functions Virtualisation (NFV) Release 3; Management and Orchestration; Report on Management and Connectivity for Multi-Site Services Disclaimer The present document has been produced and approved by the Network Functions Virtualisation (NFV) ETSI Indust
2、ry 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 REPORT ETSI ETSI GR NFV-IFA 022 V3.1.1 (2018-04) 2Reference DGR/NFV-IFA022 Keywords interface, management, NFV, orches
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8、he written authorization of ETSI. The copyright and the foregoing restriction extend to reproduction in all media. ETSI 2018. All rights reserved. DECTTM, PLUGTESTSTM, UMTSTMand the ETSI logo are trademarks of ETSI registered for the benefit of its Members. 3GPPTM and LTETMare trademarks of ETSI reg
9、istered for the benefit of its Members and of the 3GPP Organizational Partners. oneM2M logo is protected for the benefit of its Members. GSMand the GSM logo are trademarks registered and owned by the GSM Association. ETSI ETSI GR NFV-IFA 022 V3.1.1 (2018-04) 3Contents Intellectual Property Rights 7g
10、3Foreword . 7g3Modal verbs terminology 7g31 Scope 8g32 References 8g32.1 Normative references . 8g32.2 Informative references 8g33 Definitions and abbreviations . 10g33.1 Definitions 10g33.2 Abbreviations . 10g34 Overview 11g34.1 Introduction 11g35 Use Cases . 12g35.1 Introduction 12g35.2 Use Case 1
11、: Network Service for E2E Enterprise virtual Customer Premises Equipment (vCPE) 12g35.2.1 Introduction. 12g35.2.2 Trigger 14g35.2.3 Actors and roles 14g35.2.4 Pre-conditions . 15g35.2.5 Post-conditions . 15g35.2.6 Operational Flows. 15g35.2.7 Other Considerations 20g35.2.7.1 Network Service Instance
12、 Description 20g35.2.7.2 Infrastructure Description . 20g35.2.7.3 Mapping of Service Instance Model to Supporting Infrastructure 21g35.2.7.4 Management Architecture and Activities 22g35.2.8 Analysis 23g35.3 Use Case 2: Network Service for E2E Enterprise vCPE across two WANs 26g35.3.1 Introduction. 2
13、6g35.3.2 Trigger 28g35.3.3 Actors and roles 28g35.3.4 Pre-conditions . 28g35.3.5 Post-conditions . 28g35.3.6 Operational Flows. 29g35.3.7 Other Considerations (e.g. Performance) 29g35.3.8 Analysis 29g35.4 Use Case 3: NS Expansion to other NFVI-PoPs over WAN 31g35.4.1 Introduction. 31g35.4.2 Trigger
14、32g35.4.3 Actors and roles 32g35.4.4 Pre-conditions . 33g35.4.5 Post-conditions . 33g35.4.6 Operational Flows. 33g35.4.7 Other Considerations (e.g. Performance) 34g35.4.8 Analysis 34g35.5 Use case 4: Network Service Virtual Link aggregation . 34g35.5.1 Introduction. 34g35.5.2 Trigger 35g35.5.3 Actor
15、s and roles 35g35.5.4 Pre-conditions . 36g35.5.5 Post-conditions . 36g35.5.6 Operational Flows. 36g35.5.7 Other Considerations (e.g. Performance) 36g35.5.8 Analysis 37g3ETSI ETSI GR NFV-IFA 022 V3.1.1 (2018-04) 45.6 Use case 5: Checking multi-site connectivity . 38g35.6.1 Introduction. 38g35.6.2 Tri
16、gger 39g35.6.3 Actors and roles 39g35.6.4 Pre-conditions . 39g35.6.5 Post-conditions . 39g35.6.6 Operational Flows. 40g35.6.7 Other Considerations (e.g. Performance) 40g35.6.8 Analysis 40g35.7 Use case 6: Multi-site Virtual Link redundancy . 41g35.7.1 Introduction. 41g35.7.2 Trigger 42g35.7.3 Actors
17、 and roles 42g35.7.4 Pre-conditions . 43g35.7.5 Post-conditions . 43g35.7.6 Operational Flows. 43g35.7.7 Other Considerations (e.g. Performance) 43g35.7.8 Analysis 44g35.8 Use case 7: Multi-site Virtual Link healing 45g35.8.1 Introduction. 45g35.8.2 Trigger 47g35.8.3 Actors and roles 47g35.8.4 Pre-c
18、onditions . 47g35.8.5 Post-conditions . 48g35.8.6 Operational Flows. 48g35.8.7 Other Considerations (e.g. Performance) 49g35.8.8 Analysis 49g35.9 Use case 8: Multi-site VNF deployment 50g35.9.1 Introduction. 50g35.9.2 Trigger 52g35.9.3 Actors and roles 52g35.9.4 Pre-conditions . 53g35.9.5 Post-condi
19、tions . 53g35.9.6 Operational Flows. 53g35.9.7 Other Considerations (e.g. Performance) 55g35.9.8 Analysis 55g35.10 Use case 9: Addressing multi-site deployment requirements in NSDs 56g35.10.1 Introduction. 56g35.10.2 Trigger 56g35.10.3 Actors and roles 57g35.10.4 Pre-conditions . 57g35.10.5 Post-con
20、ditions . 57g35.10.6 Operational Flows . 57g35.10.7 Other Considerations (e.g. Performance) 57g35.10.8 Analysis 57g35.11 Use Case 10: User Equipment (UE) Location Triggered Network Service Migration Across NFVI PoPs . 60g35.11.1 Introduction. 60g35.11.2 Triggers . 61g35.11.3 Actors and roles 62g35.1
21、1.4 Pre-conditions . 62g35.11.5 Post-conditions . 63g35.11.6 Operational Flows . 63g35.11.7 Other Considerations (e.g. Performance) 64g35.11.8 Analysis 64g35.12 Use case 11: Modification to the WAN Connectivity Resource of a Multi-site NS. 65g35.12.1 Introduction. 65g35.12.2 Trigger 65g35.12.3 Actor
22、s and roles 65g35.12.4 Pre-conditions . 66g35.12.5 Post-conditions . 66g35.12.6 Operational Flows . 66g35.12.7 Other Considerations (e.g. Performance) 67g3ETSI ETSI GR NFV-IFA 022 V3.1.1 (2018-04) 55.12.8 Analysis 67g35.13 Use Case 12: Network Service for virtual Radio Access Network (vRAN) 67g35.13
23、.1 Introduction. 67g35.13.2 Trigger 69g35.13.3 Actors and roles 69g35.13.4 Pre-conditions . 70g35.13.5 Post-conditions . 70g35.13.6 Operational Flows . 70g35.13.7 Other Considerations (e.g. Performance) 72g35.13.8 Analysis 72g35.14 Use case 13: Use of WAN connectivity by compute-only NFVI-PoP deploy
24、ments 73g35.14.1 Introduction. 73g35.14.2 Trigger 74g35.14.3 Actors and roles 75g35.14.4 Pre-conditions . 75g35.14.5 Post-conditions . 75g35.14.6 Operational Flows . 76g35.14.7 Other Considerations (e.g. Performance) 76g35.14.8 Analysis 77g36 Analysis 78g36.1 Use Case analysis with a focus on the NF
25、V-MANO functions 78g36.2 Analysis about WIM role . 79g36.2.1 Existing concept of WIM and Network Controller . 79g36.2.2 Analysis about connectivity service decomposition . 79g36.2.3 Analysis about WIM role in multi-site connectivity . 80g36.3 Potential architecture options . 81g36.3.1 Introduction.
26、81g36.3.2 Architecture option #A: WIM integration as specialized VIM . 81g36.3.3 Architecture option #B: Managing WIM functionality of OSS/BSS with Os-Ma-nfvo reference points 83g36.4 Information modelling analysis 85g36.4.1 General 85g36.4.2 Gap analysis and extensions to NSD and VNFD 85g36.4.2.1 C
27、urrent connectivity model in the NSD (IFA 014) . 85g36.4.2.2 Affinity/anti-affinity constraints . 86g36.4.2.2.1 Description 86g36.4.2.2.2 Identified gaps and/or extensions 88g36.4.2.3 NS VL service availability features 88g36.4.2.3.1 Description 88g36.4.2.3.2 Identified gaps and/or extensions 89g36.
28、4.3 Gap analysis and extensions to NS runtime information 89g36.4.3.1 Current connectivity model in the NS runtime information (ETSI GS NFV-IFA 013) 89g36.4.3.2 NS VL runtime view . 90g36.4.3.2.1 Description 90g36.4.3.2.2 Identified gaps and/or extensions 93g36.4.4 Gap analysis and extensions to VNF
29、 runtime information . 93g36.4.4.1 Current connectivity model in the VNF runtime information (ETSI GS NFV-IFA 007) . 93g36.4.4.2 VNF VL runtime view 94g36.4.4.2.1 Description 94g36.4.4.2.2 Identified gaps and/or extensions 95g36.4.5 Gap analysis and extensions to virtualised network resource runtime
30、 information 96g36.4.5.1 Current connectivity model related to virtual network and NFVI-PoP connectivity (ETSI GS NFV-IFA 005) . 96g36.4.5.2 Virtual network runtime deployment view . 97g36.4.5.2.1 Description 97g36.4.5.2.2 Identified gaps and/or extensions 99g36.4.5.3 NFVI-PoP and WAN connectivity v
31、iews . 99g36.4.5.3.1 Description 99g36.4.5.3.2 Identified gaps and/or extensions 100g37 Recommendations 100g3ETSI ETSI GR NFV-IFA 022 V3.1.1 (2018-04) 67.1 Overview 100g37.2 General recommendations 100g37.3 Functional recommendations 101g37.4 Reference points and/or interfaces . 103g37.4.1 Reference
32、 point between OSS/BSS and NFVO (Os-Ma-nfvo) 103g37.4.2 Reference point between NFVO and VNFM (Or-Vnfm) . 103g37.4.3 Reference point between NFVO and VIM (Or-Vi) 104g37.4.4 Reference point between NFVO and WIM . 105g37.5 Descriptors and other information/data model artefacts . 105g37.6 Recommendatio
33、ns related to Security 107g38 Conclusion 108g3Annex A: A collection of variants of multi-site NS deployment . 109g3A.1 Introduction 109g3A.2 L2 WAN connectivity 109g3A.2.1 Case 1: Extending a VLAN network across WAN 109g3A.2.1.1 Overview 109g3A.2.1.2 Properties of virtual network resources 110g3A.2.
34、1.3 Operational flow . 111g3A.2.1.4 Considerations 112g3A.2.1.4.1 Distributed control and centralized control in VLAN ID assignment . 112g3A.2.1.4.2 Supporting L3 connectivity services . 112g3A.2.2 Case 2: EVPN connection with Inter-AS among NFVI-PoPs 112g3A.2.2.1 Overview 112g3A.2.2.2 Properties of
35、 virtual network resources 113g3A.2.2.3 Operational flow . 114g3A.3 L3 WAN connectivity 116g3A.3.1 Case 1: VXLAN connection over L3 WAN connectivity between NFVI-PoPs 116g3A.3.1.1 Overview 116g3A.3.1.2 Properties of virtual network resources 117g3A.3.1.3 Operational flow . 118g3Annex B: Gap analysis
36、 between WIM and Network Controller . 120g3B.1 Introduction 120g3B.2 Recap on Analysis of SDN across multiple VIMs . 120g3B.3 SDN Architecture for Transport Networks 120g3B.4 Interoperability test and demonstration by ONF/ OIF in 2016 121g3B.5 ETSI-NFV PoC#42 Mapping ETSI-NFV onto Multi-Vendor, Mult
37、i-Domain Transport SDN 122g3B.6 Analysis 122g3Annex C: Security and Regulatory Concerns 124g3C.1 Risk analysis and assessment . 124g3Annex D: Authors Essential, or potentially Essential, IPRs notified to ETSI in respect of ETSI standards“, which is available from the ETSI Secretariat. Latest updates
38、 are available on the ETSI Web server (https:/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 the ETSI Web server)
39、 which are, or may be, or may become, essential to the present document. Trademarks The present document may include trademarks and/or tradenames which are asserted and/or registered by their owners. ETSI claims no ownership of these except for any which are indicated as being the property of ETSI,
40、and conveys no right to use or reproduce any trademark and/or tradename. Mention of those trademarks in the present document does not constitute an endorsement by ETSI of products, services or organizations associated with those trademarks. Foreword This Group Report (GR) has been produced by ETSI I
41、ndustry Specification Group (ISG) Network Functions Virtualisation (NFV). Modal verbs terminology In the present document “should“, “should not“, “may“, “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 th
42、e expression of provisions). “must“ and “must not“ are NOT allowed in ETSI deliverables except when used in direct citation. ETSI ETSI GR NFV-IFA 022 V3.1.1 (2018-04) 81 Scope The present document provides a report on the functional architecture necessary to provision and manage multi-site network s
43、ervices. To this end, a set of multi-site use cases are described, analysed and used to produce a set of recommendations for normative work. 2 References 2.1 Normative references Normative references are not applicable in the present document. 2.2 Informative references References are either specifi
44、c (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) applies. NOTE: While any hyperlinks included i
45、n this clause were valid at the time of publication, ETSI cannot guarantee their long term validity. The following referenced documents are not 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 001: “Network Funct
46、ions Virtualisation (NFV); Use Cases“. i.2 ETSI GS NFV 003: “Network Functions Virtualisation (NFV); Terminology for Main Concepts in NFV“. i.3 ETSI GS NFV-EVE 005: “Network Functions Virtualisation (NFV); Ecosystem; Report on SDN Usage in NFV Architectural Framework“. i.4 ETSI GS NFV-INF 005 (V1.1.
47、1): “Network Functions Virtualisation (NFV); Infrastructure; Network Domain“. i.5 ETSI GS NFV-MAN 001: “Network Functions Virtualisation (NFV); Management and Orchestration“. i.6 ETSI GS NFV-IFA 010: “Network Functions Virtualisation (NFV) Release 2; Management and Orchestration; Functional requirem
48、ents specification“. i.7 ETSI GS NFV-IFA 005: “Network Functions Virtualisation (NFV) Release 2; Management and Orchestration; Or-Vi reference point - Interface and Information Model Specification“. i.8 ETSI GS NFV-IFA 007: “Network Functions Virtualisation (NFV) Release 2; Management and Orchestrat
49、ion; Or-Vnfm reference point - Interface and Information Model Specification“. i.9 ETSI GS NFV-IFA 008: “Network Functions Virtualisation (NFV) Release 2; Management and Orchestration; Ve-Vnfm reference point - Interface and Information Model Specification“. i.10 ETSI GS NFV-IFA 011: “Network Functions Virtualisation (NFV) Release 2; Management and Orchestration; VNF Descriptor and Packaging Specification“. i.11 ETSI GS NFV-IFA 013: “Network Functions Virtualisation (NFV) Release 2; Management and Orchestration; Os-Ma-Nfvo reference point - Interface and I
