ETSI GS NFV-IFA 048 V4.4.1 (2023-01)

Network Functions Virtualisation (NFV) Release 4; Management and Orchestration; Policy Information Model Specification

DGS/NFV-IFA048

General Information

• Status: Not Published
• Technical Committee: NFV IFA - Interfaces and Architecture
• Current Stage: 12 - Completion
• Due Date: 12-Jan-2023
• Completion Date: 04-Jan-2023

Standards Content (Sample)

GROUP SPECIFICATION
Network Functions Virtualisation (NFV) Release 4;
Management and Orchestration;
Policy Information Model Specification

2 ETSI GS NFV-IFA 048 V4.4.1 (2023-01)

Reference
DGS/NFV-IFA048
Keywords
information model, policy management

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3 ETSI GS NFV-IFA 048 V4.4.1 (2023-01)
Contents
Intellectual Property Rights . 4
Foreword . 4
Modal verbs terminology . 4
1 Scope . 5
2 References . 5
2.1 Normative references . 5
2.2 Informative references . 5
3 Definition of terms, symbols and abbreviations . 6
3.1 Terms . 6
3.2 Symbols . 6
3.3 Abbreviations . 6
4 Overview . 6
4.1 Introduction . 6
4.2 Relationship with other ETSI NFV deliverables . 7
4.3 Conventions . 7
5 Policy information model . 8
5.1 Introduction . 8
5.2 Policy information element . 9
5.2.1 Description . 9
5.2.2 Attributes . 9
5.3 Information elements related to State . 10
5.3.1 Introduction. 10
5.3.2 State information element . 10
5.3.2.1 Description . 10
5.3.2.2 Attributes . 10
5.4 Information elements related to Task . 11
5.4.1 Introduction. 11
5.4.2 Task information element . 11
5.4.2.1 Description . 11
5.4.2.2 Attributes . 11
5.5 Information elements related to Context . 11
5.5.1 Introduction. 11
5.5.2 ContextItem information element . 11
5.5.2.1 Description . 11
5.5.2.2 Attributes . 12
5.5.3 ContextMap information element . 12
5.5.3.1 Description . 12
5.5.3.2 Attributes . 12
5.6 Information elements related to Logic. 12
5.6.1 Logic information element . 12
5.6.1.1 Description . 12
5.6.1.2 Attributes . 13
Annex A (informative): Examples . 14
A.1 Policy model in descriptors . 14
A.2 Illustrative policy modelling example . 14
A.2.1 Modelling overview . 14
A.2.2 Information elements and values of the example . 15
Annex B (informative): Change History . 17
History . 18

ETSI
4 ETSI GS NFV-IFA 048 V4.4.1 (2023-01)
Intellectual Property Rights
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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 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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5 ETSI GS NFV-IFA 048 V4.4.1 (2023-01)
1 Scope
The present document specifies the structure and content of the NFV-MANO policy information model. The State-Task
design pattern is used in the design of the policy information model. The current version of the present document
specifies information elements to support the definition of ECA policies.
NOTE: The information model is designed in a way to flexibly support other policy types, but these are not
specified in the current version of the present document.
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 NFV 006: "Network Functions Virtualisation (NFV) Release 4; Management and
Orchestration; Architectural Framework Specification".
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 NFV-IFA 041 (V4.1.1): "Network Functions Virtualisation (NFV) Release 4;
Management and Orchestration; Report on enabling autonomous management in NFV-MANO".
[i.2] ETSI GR NFV-IFA 042 (V4.1.1): "Network Functions Virtualisation (NFV) Release 4;
Management and Orchestration; Report on policy information and data models for NFV-MANO".
[i.3] ETSI GS NFV-IFA 013: "Network Functions Virtualisation (NFV) Release 4; Management and
Orchestration; Os-Ma-Nfvo reference point - Interface and Information Model Specification".
[i.4] ETSI GS NFV-IFA 005: "Network Functions Virtualisation (NFV) Release 4; Management and
Orchestration; Or-Vi reference point - Interface and Information Model Specification".
[i.5] ETSI GS NFV-IFA 006: "Network Functions Virtualisation (NFV) Release 4; Management and
Orchestration; Vi-Vnfm reference point - Interface and Information Model Specification".
[i.6] ETSI GS NFV-IFA 007: "Network Functions Virtualisation (NFV) Release 4; Management and
Orchestration; Or-Vnfm reference point - Interface and Information Model Specification".
[i.7] ETSI GS NFV-IFA 008: "Network Functions Virtualisation (NFV) Release 4; Management and
Orchestration; Ve-Vnfm reference point - Interface and Information Model Specification".
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6 ETSI GS NFV-IFA 048 V4.4.1 (2023-01)
[i.8] ETSI GS NFV-IFA 030: "Network Functions Virtualisation (NFV) Release 4; Management and
Orchestration; Multiple Administrative Domain Aspect Interfaces Specification".
[i.9] ETSI GR NFV 003: "Network Functions Virtualisation (NFV); Terminology for Main Concepts in
NFV".
[i.10] ETSI GS NFV-IFA 040: "Network Functions Virtualisation (NFV) Release 4; Management and
Orchestration; Requirements for service interfaces and object model for OS container management
and orchestration specification".
[i.11] ETSI GS NFV-SOL 001: "Network Functions Virtualisation (NFV) Release 4; Protocols and Data
Models; NFV descriptors based on TOSCA specification".
[i.12] ETSI GS NFV-IFA 010: "Network Functions Virtualisation (NFV) Release 4; Management and
Orchestration; Functional requirements specification".
[i.13] ISO/IEC 9646-7: "Information technology - Open Systems Interconnection - Conformance testing
methodology and framework - Part 7: Implementation Conformance Statements".
3 Definition of terms, symbols and abbreviations
3.1 Terms
For the purposes of the present document, the terms given in ETSI GR NFV 003 [i.9] apply.
3.2 Symbols
Void.
3.3 Abbreviations
For the purposes of the present document, the abbreviations given in ETSI GR NFV 003 [i.9] and the following apply.
NOTE: An abbreviation defined in the present document takes precedence over the definition of the same
abbreviation, if any, in ETSI GR NFV 003 [i.9].
APEX Adaptive Policy EXecution
DSL Domain Specific Language
ECA Event-Condition-Action
4 Overview
4.1 Introduction
Policy is a managed object in the NFV-MANO. According to ETSI GS NFV-IFA 010 [i.12], the NFVO, VNFM and
VIM support the capability to parse and enforce NFV-MANO policies. Policies can be used to enable the NFV-MANO
to manage and orchestrate managed objects automatically and even autonomously. Intent Management can take
advantage of policies to fulfil the intents in several processing steps of the intent handling (e.g. interpretation, decision
and actions).
NOTE 1: The details of how to use policies in intent handling processes is out of the scope of the present document.
More details can be referred in ETSI GR NFV-IFA 041 [i.1] and ETSI GR NFV-IFA 042 [i.2].
The information elements and attributes defined in the present document are transferred through the policy management
interfaces defined in other deliverables. Furthermore, the modelling is capable of conveying the information about
policies to cover different use cases, e.g. LCM, FM, etc.
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7 ETSI GS NFV-IFA 048 V4.4.1 (2023-01)
Based on the outcome from the study in the ETSI GR NFV-IFA 042 [i.2], the State-Task design pattern is used in
designing the policy information model of the present document. This pattern supports representing different policy
expression forms and provides more flexibility and extensibility.
NOTE 2: The impact
...