RFC 9903 - A YANG Data Model for OSPF Segment Routing over the MPLS Data Plane

Basic Information

• RFC Number: 9903
• Title: A YANG Data Model for OSPF Segment Routing over the MPLS Data Plane
• Publication Date: December 2025
• Status: PROPOSED STANDARD
• Authors:
  • Y. Qu (Futurewei Technologies)
  • A. Lindem (LabN Consulting, L.L.C.)
  • J. Zhang (Juniper Networks)
  • I. Chen (Red Hat, Inc.)

Abstract

This document defines a YANG data model that can be used to configure and manage OSPF Segment Routing extensions for the MPLS data plane.

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/rfc9903.

Copyright Notice

Copyright (c) 2025 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.

Table of Contents

• 1. Overview
  • 1.1. Requirements Language
  • 1.2. Tree Diagrams
• 2. Design of the YANG Module for OSPF MPLS Segment Routing
• 3. OSPF Segment Routing over MPLS YANG Module
• 4. Security Considerations
• 5. IANA Considerations
• 6. References
  • 6.1. Normative References
  • 6.2. Informative References
• Appendix A. A Configuration Example
• Appendix B. Full Tree Diagram
• Acknowledgements
• Authors' Addresses

Description

This RFC document defines a YANG data model for OSPF protocol Segment Routing extensions, primarily used for network management and configuration. It is recommended to read in the following order:

1. Quick Understanding: Read the abstract and Section 1 overview
2. Model Design: Focus on Section 2 to understand YANG module design philosophy
3. Practical Application: Refer to Appendix A for configuration examples
4. Complete Specification: Section 3 contains the complete YANG module definition

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