RFC 9418 - A YANG Data Model for Service Assurance

Abstract

This document specifies YANG modules for representing assurance graphs. These graphs represent the assurance of a given service by decomposing it into atomic assurance elements called subservices. The companion document, "Service Assurance for Intent-Based Networking Architecture" (RFC 9417), presents an architecture for implementing the assurance of such services.

The YANG data models in this document conform to the Network Management Datastore Architecture (NMDA) defined in RFC 8342.

Status of This Memo

This is an Internet Standards Track document.

This document is a product of the Internet Engineering Task Force (IETF). It represents the consensus of the IETF community. It has received public review and has been approved for publication by the Internet Engineering Steering Group (IESG). Further information on Internet Standards is available in Section 2 of RFC 7841.

Information about the current status of this document, any errata, and how to provide feedback on it may be obtained at https://www.rfc-editor.org/info/rfc9418.

Copyright Notice

Copyright (c) 2023 IETF Trust and the persons identified as the document authors. All rights reserved.

This document is subject to BCP 78 and the IETF Trust's Legal Provisions Relating to IETF Documents (https://trustee.ietf.org/license-info) in effect on the date of publication of this document. Please review these documents carefully, as they describe your rights and restrictions with respect to this document. Code Components extracted from this document must include Revised BSD License text as described in Section 4.e of the Trust Legal Provisions and are provided without warranty as described in the Revised BSD License.

Contents

• 1. Introduction
  • 1.1. Terminology
• 2. YANG Modules Overview
• 3. Base IETF Service Assurance YANG Module
  • 3.1. Concepts
  • 3.2. Tree View
  • 3.3. YANG Module
  • 3.4. Rejecting Circular Dependencies
• 4. Guidelines for Defining New Subservice Types
• 5. Subservice Augmentation: "ietf-service-assurance-device" YANG Module
  • 5.1. Tree View
  • 5.2. Concepts
  • 5.3. YANG Module
• 6. Subservice Augmentation: "ietf-service-assurance-interface" YANG Module
  • 6.1. Tree View
  • 6.2. Concepts
  • 6.3. YANG Module
• 7. Security Considerations
• 8. IANA Considerations
  • 8.1. The IETF XML Registry
  • 8.2. The YANG Module Names Registry
• 9. References
  • 9.1. Normative References
  • 9.2. Informative References
• Appendix A. Vendor-Specific Subservice Augmentation: "example-service-assurance-device-acme" YANG Module
  • A.1. Tree View
  • A.2. Concepts
  • A.3. YANG Module
• Appendix B. Further Augmentations: IP Connectivity and IS-IS Subservices
  • B.1. IP Connectivity Module Tree View
  • B.2. IS-IS Module Tree View
  • B.3. Global Tree View
  • B.4. IP Connectivity YANG Module
  • B.5. IS-IS YANG Module
• Appendix C. Example of a YANG Instance
• Appendix D. YANG Library for Service Assurance
• Acknowledgements
• Authors' Addresses