ETSI GS ZSM 001 V1.1.1 (2019-10)

Zero-touch network and Service Management (ZSM); Requirements based on documented scenarios

DGS/ZSM-01ed111_UCs

General Information

• Status: Published
• Publication Date: 01-Oct-2019
• Technical Committee: ZSM - Zero-touch network and Service Management
• Current Stage: 12 - Completion
• Due Date: 07-Oct-2019
• Completion Date: 02-Oct-2019

Standards Content (Sample)

GROUP SPECIFICATION
Zero-touch network and Service Management (ZSM);
Requirements based on documented scenarios
Disclaimer
The present document has been produced and approved by the Zero touch network and Service Management (ZSM) 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 GS ZSM 001 V1.1.1 (2019-10)

Reference
DGS/ZSM-001ed111_UCs
Keywords
management, network, requirements, service,
use case
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3 ETSI GS ZSM 001 V1.1.1 (2019-10)
Contents
Intellectual Property Rights . 7
Foreword . 7
Modal verbs terminology . 7
1 Scope . 8
2 References . 8
2.1 Normative references . 8
2.2 Informative references . 8
3 Definition of terms, symbols and abbreviations . 9
3.1 Terms . 9
3.2 Symbols . 9
3.3 Abbreviations . 9
4 Introduction . 11
5 List of requirements. 13
5.1 Introduction . 13
5.2 Requirements . 13
6 Scenarios . 28
6.1 Introduction . 28
6.2 E2E network and service management . 28
6.2.1 E2E automation of 5G network slice as operator-internal management and orchestration . 28
6.2.1.1 Network slice lifecycle management . 28
6.2.1.1.1 Description . 28
6.2.1.1.2 Rationale and challenges . 28
6.2.1.1.3 ZSM scenario details . 28
6.2.1.1.4 Related requirements for ZSM . 29
6.2.1.2 Network slice isolation management . 30
6.2.1.2.1 Description . 30
6.2.1.2.2 Rationale and challenges . 30
6.2.1.2.3 ZSM scenario details . 30
6.2.1.2.4 Related requirements for ZSM . 31
6.2.1.3 Network slice monitoring . 31
6.2.1.3.1 Description . 31
6.2.1.3.2 Rationale and challenges . 31
6.2.1.3.3 ZSM scenario details . 31
6.2.1.3.4 Related requirements for ZSM . 32
6.2.1.4 E2E network slicing provisioning in support of 5G services . 32
6.2.1.4.1 Description . 32
6.2.1.4.2 Rationale and challenges . 32
6.2.1.4.3 ZSM scenario details . 33
6.2.1.4.4 Related requirements for ZSM . 33
6.2.1.5 Performance monitoring of E2E network slicing and service in support of 5G network and
service . 34
6.2.1.5.1 Description . 34
6.2.1.5.2 Rationale and challenges . 34
6.2.1.5.3 ZSM scenario details . 34
6.2.1.5.4 Related requirements for ZSM framework . 34
6.2.2 E2E automation of 5G network slice management and orchestration in support of 5G services
(network slice as a service) . 34
6.2.2.1 Exposure to support management and orchestration of NSaaS . 34
6.2.2.1.1 Description . 34
6.2.2.1.2 Rationale and challenges . 35
6.2.2.1.3 ZSM scenario details . 35
6.2.2.1.4 Related requirements for ZSM . 35
6.2.2.2 E2E 5G network slicing management and orchestration in support of 5G services . 35
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6.2.2.2.1 Description . 35
6.2.2.2.2 Rationale and challenges . 36
6.2.2.2.3 ZSM scenario details . 36
6.2.2.2.4 Related requirements for ZSM . 36
6.2.3 Automation of E2E network and service management . 36
6.2.3.1 Zero-touch full automation of 5G network and service management . 36
6.2.3.1.1 Description . 36
6.2.3.1.2 Rationale and challenges . 37
6.2.3.1.3 ZSM scenario details . 37
6.2.3.1.4 Related requirements for ZSM . 38
6.2.3.2 Automated network bandwidth management . 38
6.2.3.2.1 Description . 38
6.2.3.2.2 Rationale and challenges . 38
6.2.3.2.3 ZSM scenario details . 39
6.2.3.2.4 Related requirements for ZSM . 39
6.2.3.3 ZSM automated healing . 39
6.2.3.3.1 Description . 39
6.2.3.3.2 Rationale and challenges . 40
6.2.3.3.3 ZSM scenario details . 40
6.2.3.3.4 Related requirements for ZSM . 40
6.2.3.4 Automatic E2E network and service topology management . 40
6.2.3.4.1 Description . 40
6.2.3.4.2 Rationale and challenges . 40
6.2.3.4.3 ZSM scenario details . 41
6.2.3.4.4 Related requirements for ZSM . 41
6.2.3.5 Zero-touch E2E 5G network and service management as well as orchestration including edge

computing. 42
6.2.3.5.1 Description . 42
6.2.3.5.2 Rationale and challenges . 42
6.2.3.5.3 ZSM scenario details . 42
6.2.3.5.4 Related requirements for ZSM . 43
6.2.3.6 Automatic software deployment . 43
6.2.3.6.1 Description . 43
6.2.3.6.2 Rationale and challenges . 43
6.2.3.6.3 ZSM scenario details . 44
6.2.3.6.4 Related requirements for ZSM . 44
6.2.3.7 Automatic software upgrade . 45
6.2.3.7.1 Description . 45
6.2.3.7.2 Rationale and challenges . 45
6.2.3.7.3 ZSM scenario details . 45
6.2.3.7.4 Related requirements for ZSM . 45
6.2.3.8 Automation using policies . 46
6.2.3.8.1 Description . 46
6.2.3.8.2 Rationale and challenges . 46
6.2.3.8.3 ZSM scenario details . 46
6.2.3.8.4 Related requirements for ZSM . 47
6.2.3.9 Closed loop automation . 48
6.2.3.9.1 Description . 48
6.2.3.9.2 Rationale and challenges . 48
6.2.3.9.3 ZSM scenario details . 48
6.2.3.9.4 Related requirements for ZSM . 49
6.2.3.10 Full automation of VNF provisioning . 49
6.2.3.10.1 Description . 49
6.2.3.10.2 Rationale and challenges . 49
6.2.3.10.3 ZSM scenario details . 49
6.2.3.10.4 Related requirements for ZSM . 50
6.2.3.11 Automated detection of services offered by management domains . 50
6.2.3.11.1 Description . 50
6.2.3.11.2 Rationale and challenges . 50
6.2.3.11.3 ZSM scenario details . 50
6.2.3.11.4 Related requirements for ZSM . 50
6.2.3.12 Service management by 3GPP management system and ETSI NFV MANO . 51
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6.2.3.12.1 Description . 51
6.2.3.12.2 Rationale and challenges . 51
6.2.3.12.3 ZSM Scenario details . 51
6.2.3.12.4 Related requirements for ZSM . 52
6.3 Network as a service. 52
6.3.1 NaaS lifecycle and exposure with a network slicing scenario . 52
6.3.1.1 Description . 52
6.3.1.2 Rationale and challenges . 52
6.3.1.2.1 CSP challenges and requirements . 52
6.3.1.2.2 ZSM challenges . 53
6.3.1.3 ZSM scenario details . 53
6.3.1.4 Related requirements for ZSM . 54
6.4 Analytics & machine learning . 54
6.4.1 Access to up-to-date telemetry data . 54
6.4.1.1 Description . 54
6.4.1.2 Rationale and challenges . 54
6.4.1.3 ZSM scenario details . 55
6.4.1.4 Related requirements for ZSM . 55
6.4.2 Machine learning for network & service automation. 56
6.4.2.1 Description . 56
6.4.2.2 Rationale and challenges . 56
6.4.2.3 ZSM scenario details . 57
6.4.2.4 Related requirements for ZSM . 57
6.4.3 Predictive analytics . 58
6.4.3.1 Description . 58
6.4.3.2 Rationale and challenges . 58
6.4.3.3 ZSM scenario details . 58
6.4.3.4 Related requirements for ZSM . 58
6.4.4 Real time monitoring and analysis . 59
6.4.4.1 Description . 59
6.4.4.2 Rationale and challenges . 59
6.4.4.3 ZSM scenario details . 59
6.4.4.4 Related requirements for ZSM . 59
6.4.5 Proposal for analytics domains and concepts for interaction . 59
6.4.5.1 Description . 59
6.4.5.2 Rationale and challenges . 60
6.4.5.3 ZSM scenario details . 60
6.4.5.4 Related requirements for ZSM . 60
6.4.6 AI for network and service automation. 60
6.4.6.1 Description . 60
6.4.6.2 Rationale and challenges . 61
6.4.6.3 ZSM scenario details . 61
6.4.6.4 Related requirements for ZSM . 61
6.4.7 CI/CD for ZSM framework functional components . 62
6.4.7.1 Description . 62
6.4.7.2 Rationale and challenges . 62
6.4.7.3 ZSM scenario details . 62
6.4.7.4 Related requirements for ZSM . 62
6.4.8 Zero-touch self-optimizing network . 63
6.4.8.1 Description . 63
6.4.8.2 Rationale and challenges . 63
6.4.8.3 ZSM scenario details . 65
6.4.8.4 Related requirements for ZSM . 65
6.4.9 Self-learning based on reinforcement learning . 66
6.4.9.1 Description . 66
6.4.9.2 Rationale and challenges . 66
6.4.9.3 ZSM scenario details . 67
6.4.9.4 Related requirements for ZSM . 67
6.4.10 Optimization of supervised/unsupervised learning used in management services for closed loop . 67
6.4.10.1 Description . 67
6.4.10.2 Rationale and challenges . 67
6.4.10.3 ZSM scenario details . 67
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6.4.10.4 Related requirements for ZSM . 68
6.5 Collaborative/federated service management . 68
6.5.1 Communication services hosted across multiple operators . 68
6.5.1.1 Description . 68
6.5.1.2 Rationale and Challenges . 68
6.5.1.3 ZSM scenario details . 69
6.5.1.4 Related requirements for ZSM . 71
6.5.2 Private communication services hosted by an operator . 71
6.5.2.1 Description . 71
6.5.2.2 Rationale and Challenges . 71
6.5.2.3 ZSM scenario details . 72
6.5.2.4 Related requirements for ZSM . 72
6.5.3 Automation in multi-stakeholder ecosystems . 72
6.5.3.1 Description . 72
6.5.3.2 Rationale and Challenges . 72
6.5.3.3 ZSM scenario details . 73
6.5.3.4 Related requirements for ZSM . 73
6.6 Security . 73
6.6.1 Troubleshooting of encrypted traffic in ZSM framework . 73
6.6.1.1 Description . 73
6.6.1.2 Rationale and challenges . 74
6.6.1.3 ZSM scenario details . 74
6.6.1.4 Related requirements for ZSM . 74
6.7 Testing . 75
6.7.1 Automated system test in production network . 75
6.7.1.1 Description . 75
6.7.1.2 Rationale and challenges . 75
6.7.1.3 ZSM scenario details . 75
6.7.1.4 Related requirements for ZSM . 75
6.7.2 CI/CD for network services . 76
6.7.2.1 Description . 76
6.7.2.2 Rationale and challenges . 76
6.7.2.3 ZSM scenario details . 76
6.7.2.4 Related requirements for ZSM . 77
6.7.3 Automated test capabilities concerning ZSM . 77
6.7.3.1 Description . 77
6.7.3.2 Rationale and challenges . 78
6.7.3.3 ZSM scenario details . 78
6.7.3.4 Related requirements for ZSM . 78
6.8 Tracing . 79
6.8.1 Automated tracing capabilities . 79
6.8.1.1 Description . 79
6.8.1.2 Rationale and challenges . 79
6.8.1.3 ZSM scenario details . 80
6.8.1.4 Related requirements for ZSM . 80
6.9 Integration/interoperation . 81
6.9.1 ZSM framework as entity in an ecosystem . 81
6.9.1.1 Description . 81
6.9.1.2 Rationale and challenges . 81
6.9.1.3 ZSM scenario details . 81
6.9.1.4 Related requirements for ZSM . 83
Annex A (informative): Change History . 84
History . 89

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7 ETSI GS ZSM 001 V1.1.1 (2019-10)
Intellectual Property Rights
Essential patents
IPRs essential or potentially essential to normative deliverables may have been declared to ETSI. The information
pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found
in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in
respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates 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) 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, 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 Specification (GS) has been produced by ETSI Industry Specification Group (ISG) Zero touch network and
Service Management (ZSM).
Modal verbs terminology
In the present document "shall", "shall not", "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 the expression of
provisions).
"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.

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8 ETSI GS ZSM 001 V1.1.1 (2019-10)
1 Scope
The present document defines requirements on the zero-touch E2E (End-to-End) network and service management.
Scenarios will be documented and used to derive the requirements.
The requirements will also be considered for the work on the topics Zero-touch network and Service Management
(ZSM) reference architecture [1], ZSM End to end management and orchestration of network slicing [i.7], and ZSM
Inter management domain lifecycle management [i.8].
2 References
2.1 Normative 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) applies.
Referenced documents which are not found to be publicly available in the expected location might be found at
https://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 following referenced documents are necessary for the application of the present document.
[1] ETSI GS ZSM 002: "Zero-touch network and Service Management (ZSM); Reference
Architecture".
[2] ETSI GS ZSM 007: "Zero-touch network and Service Management (ZSM); Terminology for
concepts in ZSM".
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 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 necessary for the application of the present document but they assist the
user with regard to a particular subject area.
[i.1] ETSI GR ZSM 005: "Zero-touch network and Service Management (ZSM); Means of
Automation".
[i.2] ETSI GR NFV-IFA 023: "Network Functions Virtualisation (NFV); Management and
Orchestration; Report on Policy Management in MANO; Release 3".
[i.3] ETSI TS 128 530 (V15.1.0): "5G; Management and orchestration; Concepts, use cases and
requirements (3GPP TS 28.530 version 15.1.0)".
[i.4] NGMN Alliance: "Architecture Proposal for the Handling of Network Operations Data with
Specific Focus on Virtualized Networks", version 1.0, 2017-12-22.
[i.5] ETSI TS 138 300 (V15.6.0): "5G; NR; Overall description; Stage-2 (3GPP TS 38.300 version
15.6.0)".
[i.6] ETSI TS 123 501 (V15.5.0): "5G; System architecture for the 5G System (5GS) (3GPP TS 23.501
version 15.5.0)".
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9 ETSI GS ZSM 001 V1.1.1 (2019-10)
[i.7] ETSI GS ZSM 003: "Zero-touch network and Service Management (ZSM); End to end
management and orchestration of network slicing".
[i.8] ETSI GS ZSM 008: "Zero-touch network and Service Management (ZSM); Inter management
domain lifecycle management".
3 Definition of terms, symbols and abbreviations
3.1 Terms
For the purposes of the present document, the terms given in ETSI GS ZSM 007 [2] and the following apply:
NOTE: If the same term is defined in both ETSI GS ZSM 007 [2] and in the present document, the definition in
the present document takes precedence.
data governance: processes to define and enforce access restrictions to data, and to attach related metadata to the data
federated orchestration: orchestration performed by multiple autonomous management domains
NOTE: Autonomous domains in this context is related to independent (or self-regulating), not to be confused with
the degree of automation.
hierarchical orchestration: orchestration decomposed into one or more hierarchical interactions where parts of the
service are delegated to a sub-ordinate orchestrator
key performance indicator: measurement of a specific aspect of the performance of a service that can be used in a
service level objective
service level agreement: part of a business agreement between a service provider and a customer, specifying the
committed service quality and quantity in terms of
...