ETSI GR NFV-MAN 001 V1.2.1 (2021-12)

Network Functions Virtualisation (NFV); Management and Orchestration; Report on Management and Orchestration Framework

RGR/NFV-MAN001ed121

General Information

• Status: Not Published
• Technical Committee: NFV EVE - Evolution and Ecosystem
• Current Stage: 12 - Completion
• Due Date: 07-Dec-2021
• Completion Date: 17-Dec-2021

Standards Content (Sample)

GROUP REPORT
Network Functions Virtualisation (NFV);
Management and Orchestration;
Report on Management and Orchestration Framework
Disclaimer
The present 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.

2 ETSI GR NFV-MAN 001 V1.2.1 (2021-12)

Reference
RGR/NFV-MAN001ed121
Keywords
configuration, management, network, NFV,
orchestration
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ETSI
3 ETSI GR NFV-MAN 001 V1.2.1 (2021-12)
Contents
Intellectual Property Rights . 9
Foreword . 9
Modal verbs terminology . 9
1 Scope . 10
2 References . 10
2.1 Normative references . 10
2.2 Informative references . 10
3 Definition of terms, symbols and abbreviations . 11
3.1 Terms . 11
3.2 Symbols . 11
3.3 Abbreviations . 11
4 NFV Management and Orchestration: objectives and concepts . 14
4.1 Overview . 14
4.2 Management and Orchestration aspects of Network Functions Virtualisation Infrastructure . 14
4.3 Management and Orchestration aspects of Virtualised Network Functions . 15
4.4 Management and Orchestration aspects of Network Services . 16
4.5 Other management and orchestration aspects of NFV framework . 17
4.5.0 Preamble . 17
4.5.1 Fault and performance management . 17
4.5.2 Policy Management . 17
4.5.3 Testing aspects of Network Services . 17
4.6 Relation of NFV management and orchestration with existing operations and management systems . 18
4.6.1 Overview . 18
4.6.2 NFV-MANO Interworking with OSS/BSS to deliver NFV business benefits . 18
4.6.3 Key Challenges and Considerations . 19
4.7 Administrative Domains . 20
5 Management and Orchestration architectural framework . 21
5.1 Overview . 21
5.2 Principles of NFV-MANO . 21
5.3 NFV-MANO architectural framework overview . 22
5.4 NFV-MANO architectural framework functional blocks . 24
5.4.1 NFV Orchestrator (NFVO) . 24
5.4.2 VNF Manager (VNFM) . 26
5.4.3 Virtualised Infrastructure Manager (VIM) . 27
5.4.4 NS Catalogue . 28
5.4.5 VNF Catalogue . 28
5.4.6 NFV Instances repository . 28
5.4.7 NFVI Resources repository . 28
5.5 Other functional blocks . 28
5.5.0 Preamble . 28
5.5.1 Element Management (EM) . 28
5.5.2 Operations Support System/Business Support System (OSS/BSS) . 29
5.5.3 Network Functions Virtualisation Infrastructure (NFVI) . 29
5.6 Network Controllers . 29
5.6.1 Overview . 29
5.6.2 NFVO, VIM and Network Controllers . 30
5.6.3 Roles and responsibilities . 31
5.6.4 NFVI network EMS/NMS vs. Network Controllers . 32
5.7 NFV-MANO reference points . 33
5.7.1 Os-Ma-nfvo. 33
5.7.2 Ve-Vnfm-em . 34
5.7.3 Ve-Vnfm-vnf . 34
5.7.4 Nf-Vi . 34
5.7.5 Or-Vnfm . 35
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5.7.6 Or-Vi . 35
5.7.7 Vi-Vnfm . 35
5.8 Interfaces description approach . 36
5.8.1 Overview . 36
5.8.2 Producer-consumer paradigm . 36
6 NFV management and orchestration information elements . 38
6.1 Introduction . 38
6.2 Network Service information elements . 41
6.2.0 Preamble . 41
6.2.1 Network Service Descriptor (nsd) . 41
6.2.1.1 nsd base element . 41
6.2.1.2 Connection Point (nsd:connection_point). 42
6.2.1.3 Service deployment flavour (nsd:service_deployment_flavour) . 42
6.2.1.3.1 Base element . 42
6.2.1.3.2 Constituent VNF (nsd:service_deployment_flavour:constituent_vnf) . 43
6.2.2 Network Service Record (nsr) . 43
6.2.2.1 nsr base element . 43
6.2.2.2 Connection Point (nsr:connection_point). 43
6.3 Virtualised Network Function information elements . 44
6.3.0 Preamble . 44
6.3.1 VNF Descriptor (vnfd) . 44
6.3.1.1 vnfd base information elements . 44
6.3.1.2 Virtual Deployment Unit (vnfd:vdu) . 45
6.3.1.2.1 vnfd:vdu base elements . 45
6.3.1.2.2 vnfd:vdu information elements related to CPUs . 46
6.3.1.2.3 vnfd:vdu information elements related to memory . 48
6.3.1.2.4 vnfd:vdu information elements related to security . 49
6.3.1.2.5 vnfd:vdu information elements related to hypervisors . 49
6.3.1.2.6 vnfd:vdu information elements related to PCIe . 50
6.3.1.2.7 vnfd:vdu information elements related to network interfaces . 50
6.3.1.2.8 vnfd:vdu information elements related to virtual switches . 51
6.3.1.2.9 vnfd:vdu information elements related to general reliability and availability . 51
6.3.1.2.10 vnfd:vdu information elements related to storage . 52
6.3.1.3 VNF internal Virtual Link (vnfd:virtual_link) . 52
6.3.1.4 Connection Point (vnfd:connection_point) . 52
6.3.1.5 Deployment flavour element (vnfd:deployment_flavour) . 53
6.3.2 VNF Record (vnfr) . 53
6.3.2.0 Preamble . 53
6.3.2.1 vnfr base elements . 54
6.3.2.2 VNF internal Virtual Link (vnfr:virtual_link) . 55
6.3.2.3 Connection Point (vnfr:connection_point) . 55
6.3.2.4 Virtual Deployment Unit (vnfr:vdu) . 56
6.3.2.4.1 vnfr:vdu base element . 56
6.3.2.4.2 VNFC instance (vnfr:vdu:vnfc_instance) . 56
6.3.2.4.3 Connection Point (vnfr:vdu: vnfc_instance:connection_point) . 57
6.4 Virtual Link information elements . 57
6.4.0 Preamble . 57
6.4.1 Virtual Link Descriptor (vld) . 58
6.4.2 Virtual Link Record (vlr) . 58
6.4.3 Relation between internal Virtual Links and Virtual Links . 59
6.5 Virtualised Network Function Forwarding Graph information elements . 60
6.5.0 Preamble . 60
6.5.1 VNF Forwarding Graph Descriptor (vnffgd) . 62
6.5.1.1 vnffgd base element . 62
6.5.1.2 Network Forwarding Path (vnffgd:network_forwarding_path) . 63
6.5.2 VNF Forwarding Graph Record (vnffgr) . 63
6.5.2.0 Preamble . 63
6.5.2.1 vnffgr base element . 63
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6.5.2.2 Network Forwarding Path (vnffgr:network_forwarding_path) . 63
6.6 Physical Network Function information elements . 64
6.6.1 PNF Descriptor (pnfd) . 64
6.6.1.0 Preamble . 64
6.6.1.1 pnfd base element . 64
6.6.1.2 Connection Point (pnfd:connection_point) . 64
6.6.2 PNF Record (pnfr) . 64
6.6.2.1 pnfr base element . 64
6.6.2.2 Connection Point (pnfr:connection_point) . 65
6.7 VNF Instantiation input parameter . 65
6.8 Network Service Instantiation Input Parameters . 66
7 NFV-MANO interfaces . 66
7.0 Preamble . 66
7.1 Interfaces concerning Network Services . 67
7.1.1 Network Service Descriptor management . 67
7.1.1.1 Description . 67
7.1.1.2 Operations . 67
7.1.2 Network Service lifecycle management . 68
7.1.2.1 Description . 68
7.1.2.2 Operations . 68
7.1.3 Network Service lifecycle change notification . 69
7.1.3.1 Description . 69
7.1.3.2 Operations . 69
7.1.4 Network Service performance management . 69
7.1.4.1 Description . 69
7.1.4.2 Operations . 70
7.1.5 Network Service fault management . 70
7.1.5.1 Description . 70
7.1.5.2 Operations . 70
7.2 Interfaces concerning Virtualised Network Functions . 71
7.2.1 VNF Package management . 71
7.2.1.1 Description . 71
7.2.1.2 Operations . 71
7.2.2 VNF software image management . 72
7.2.2.1 Description . 72
7.2.2.2 Operations . 72
7.2.3 VNF lifecycle operation granting . 73
7.2.3.1 Description . 73
7.2.3.2 Operations . 73
7.2.4 VNF lifecycle management . 74
7.2.4.1 Description . 74
7.2.4.2 Operations . 74
7.2.5 VNF lifecycle change notification . 75
7.2.5.1 Description . 75
7.2.5.2 Operations . 75
7.2.6 VNF configuration . 76
7.2.6.1 Description . 76
7.2.6.2 Operations . 76
7.2.7 VNF performance management . 77
7.2.7.1 Description . 77
7.2.7.2 Operations . 77
7.2.8 VNF fault management . 78
7.2.8.1 Description . 78
7.2.8.2 Operations . 78
7.3 Interfaces concerning virtualised resources . 79
7.3.1 Virtualised resources catalogue management . 79
7.3.1.1 Description . 79
7.3.1.2 Operations . 79
7.3.2 Virtualised resources capacity management . 80
7.3.2.1 Description . 80
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7.3.2.2 Operations . 80
7.3.3 Virtualised resources management . 81
7.3.3.1 Description . 81
7.3.3.2 Operations . 81
7.3.4 Virtualised resources performance management . 82
7.3.4.1 Description . 82
7.3.4.2 Operations . 82
7.3.5 Virtualised resources fault management . 83
7.3.5.1 Description . 83
7.3.5.2 Operations . 83
7.4 Policy administration interface . 83
7.4.1 Description . 83
7.4.2 Operations . 84
7.5 Network Forwarding Path management interface . 84
7.5.1 Description . 84
7.5.2 Operations . 84
7.6 NFVI hypervisor management interface . 85
7.6.1 Description . 85
7.6.2 Operations . 85
7.7 NFVI compute management interface . 87
7.7.1 Description . 87
7.8 NFVI networking management interface . 88
7.8.1 Description . 88
7.8.2 Operations . 89
7.9 Interfaces exposed between different service providers . 89
Annex A: VNF Instance management and orchestration case study . 91
A.1 IMS MRF management and orchestration case study . 91
A.1.0 Case study description . 91
A.1.1 IMS MRF on-boarding . 93
A.1.2 IMS MRF instance provisioning and configuration . 94
A.2 Network Service fault Management case study . 98
Annex B: VNF lifecycle management . 100
B.1 Introduction . 100
B.2 VNF Package on-boarding flows . 101
B.2.0 Use Case diagram . 101
B.2.1 On-board VNF Package flow . 102
B.2.2 Disable VNF Package flow . 103
B.2.3 Enable VNF Package flow . 103
B.2.4 Update VNF Package flow . 104
B.2.5 Query VNF Packages flow . 105
B.2.6 Delete VNF Package flow . 105
B.3 VNF instantiation flows . 107
B.3.1 VNF instantiation flows with resource allocation done by NFVO . 107
B.3.1.1 VNF Check Feasibility . 107
B.3.1.2 VNF instantiation flow . 109
B.3.1.3 NFVO: validation . 110
B.3.1.4 NFVO: request to VNF Manager to instantiate the VNF. 111
B.3.1.5 VNF Manager: request validation and processing . 111
B.3.1.6 NFVO: pre-allocation processing . 111
B.3.1.7 Orchestration: resource allocation (compute, storage and network) and interconnection setup . 112
B.3.2 VNF instantiation flows with resource allocation done by VNF Manager. 113
B.3.2.1 VNF instantiation from EM . 113
B.3.2.2 VNF instantiation from NFVO . 114
B.4 VNF instance scaling flows . 115
B.4.1 Detecting need to scale . 115
B.4.2 Determining scaling action . 116
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B.4.3 Scaling flow with resource allocation done by NFVO . 117
B.4.4 Scaling flows with resource allocation done by VNF Manager . 119
B.4.4.1 Automatic VNF expansion triggered by VNF performance measurement results . 119
B.4.4.2 EM initiated VNF expansion . 121
B.4.4.3 Automatic VNF contraction triggered by VNF performance measurement results . 122
B.4.4.4 EM initiated VNF contraction . 123
B.5 VNF instance termination flows . 125
B.6 NFV fault management . 126
Annex C: Network Service lifecycle management flows . 129
C.1 Introduction . 129
C.2 Network Service on-boarding flows . 129
C.2.0 Use Case diagram . 129
C.2.1 On-board Network Service Descriptor flow . 130
C.2.2 Disable Network Service Descriptor flow . 131
C.2.3 Enable Network Service Descriptor flow . 131
C.2.4 Update Network Service Descriptor flow . 132
C.2.5 Query Network Service Descriptor flow . 133
C.2.6 Delete Network Service Descriptor flow . 133
C.3 Network Service instantiation flows . 135
C.4 Network Service instance scaling . 137
C.4.1 Network Service instance scale-out . 137
C.4.2 Network Service instance scale-in . 139
C.5 Network Service instance update flows due to VNF instance modification . 141
C.6 Network Service instance termination flows . 144
C.7 VNF Forwarding Graph lifecycle management flows . 146
C.7.0 Preamble . 146
C.7.1 Create VNF Forwarding Graph . 146
C.7.2 Update VNF Forwarding Graph . 147
C.7.3 Query VNF Forwarding Graph . 148
C.7.4 Delete VNF Forwarding Graph . 148
Annex D: Orchestration flows . . 150
D.1 Introduction . 150
D.2 NFVI-PoP setup and configuration . 150
D.3 Resources provisioning/de-provisioning . 151
Annex E: VNFD/NSD representations using TOSCA . 152
E.1 Describing IMS MRF with TOSCA . 152
E.1.1 TOSCA meta-model . 152
E.1.2 IMS MRF representation in TOSCA . 152
E.1.2.0 Preamble .
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