RFC 9521 · PROPOSED STANDARD · 2024
SUN · 14 JUN 2026
Bidirectional Forwarding Detection for Generic Network Virtualization Encapsulation
Overview
RFC 9521, “Bidirectional Forwarding Detection for Generic Network Virtualization Encapsulation”, is a Proposed Standard document published in January 2024 by X. Min, G. Mirsky, S. Pallagatti, J. Tantsura, S. Aldrin. The canonical text is published by the RFC Editor.
Abstract
This document describes the use of the Bidirectional Forwarding Detection (BFD) protocol in point-to-point Generic Network Virtualization Encapsulation (Geneve) unicast tunnels used to make up an overlay network.
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.
Read this RFC
The canonical text of RFC 9521 is hosted at rfc-editor.org. Available in HTML,TXT,PDF,XML.
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