RFC 9983 - OSPFv2 Anycast Property Advertisement

• Status: Proposed Standard
• Published: May 2026
• Stream: IETF

Abstract

An IP prefix may be configured as anycast, so the same value can be advertised by multiple routers. This document defines a new flag in the OSPFv2 Extended Prefix TLV Flags to advertise the anycast property and specifies a companion YANG module for managing this function.

Contents

• 1. Introduction
• 1.1. Requirements Language
• 2. OSPFv2 Anycast Property Advertisement
• 3. BGP-LS Advertisement
• 4. YANG Data Model
• 4.1. Tree for the YANG Data Model
• 4.2. YANG Data Model for OSPFv2 Anycast Property Advertisement
• 5. IANA Considerations
• 5.1. OSPFv2 Extended Prefix TLV Flags Registry
• 5.2. OSPFv2 Anycast Flag YANG Module Registration
• 6. Security Considerations
• 6.1. Protocol Security Considerations
• 6.2. YANG Security Considerations
• 7. References
• Acknowledgements
• Contributors
• Authors' Addresses

Related Resources

• Official Text: RFC 9983
• Official Page: RFC 9983 DataTracker
• Errata: RFC Editor Errata