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RFC 9747: Unaffiliated Bidirectional Forwarding Detection (BFD) Echo

In plain English — editorial summary, not part of the RFC

This document specifies an extension to the Bidirectional Forwarding Detection (BFD) protocol that enables the use of the BFD Echo function without the need for an associated BFD control session. This "Unaffiliated BFD Echo" mechanism allows rapid detection of forwarding path failures in networks where establishing BFD control sessions is impractical or undesirable. By decoupling the Echo function from the control plane, network devices can utilize BFD's fast failure detection capabilities in a simplified manner, enhancing network resiliency and operational efficiency. This document updates RFC 5880 by defining a new Unaffiliated BFD Echo mechanism.

Document record

Document ID
RFC9747
Published
March 2025
Authors
W. Cheng; R. Wang; X. Min; R. Rahman; R. Boddireddy
Status
PROPOSED STANDARD
Stream
IETF
Area
rtg
Pages
12
Also known as
—
Updates:
RFC 5880

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The document record above — title, authors, date, status, stream, area, relationships, DOI and errata — is imported verbatim from the public RFC Editor index. The “in plain English” section is editorial: written by The metasystema editorial team, not part of the RFC. Where the two differ, the RFC text governs.

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