OSPFv2 Anycast Property Advertisement
RFC 9983, “OSPFv2 Anycast Property Advertisement”, is a Proposed Standard document published in May 2026 by R. Chen, D. Zhao, P. Psenak, K. Talaulikar, C. Lin. The canonical text is published by the RFC Editor.
Abstract
An IP prefix may be configured as anycast and, as such, the same value can be advertised by multiple routers. It is useful for other routers to know that the advertisement is for an anycast prefix.
This document defines a new flag in the OSPFv2 Extended Prefix TLV Flags to advertise the anycast property. The document also specifies a companion YANG module for managing this function.
What “Proposed Standard” means
An entry-level standards-track specification: stable, peer-reviewed and a solid basis for implementation, though it may still evolve before becoming an Internet Standard.
The canonical text of RFC 9983 is hosted at rfc-editor.org. Available in HTML,TXT,PDF,XML.
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