Unaffiliated Bidirectional Forwarding Detection (BFD) Echo

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Publisher: IETF
Doc Type: Standard
Pages: 12
Abstract: 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.
Publication Date: 2025-03-01
Status Note: Proposed Standard
DOI: 10.17487/RFC9747
Link: https://doi.org/10.17487/RFC9747
Author(s): Weiqiang Cheng
Ruixue Wang
Xiao Min
Reshad Rahman
Raj Chetan Boddireddy

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Document Versions — IETF RFC 9747

▶ IETF RFC 9747 (2025-03-01)

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IETF RFC 2119 [Active*]
IETF RFC 5880 [Active*]
IETF RFC 5881 [Active*]
IETF RFC 8174 [Active*]

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IETF RFC 5880 [Active*]

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IETF RFC 9747, Unaffiliated Bidirectional Forwarding Detection (BFD) Echo. Available at https://doi.org/10.17487/RFC9747

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IETF RFC 9747, Unaffiliated Bidirectional Forwarding Detection (BFD) Echo. Available at https://doi.org/10.17487/RFC9747

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IETF RFC 9747, Unaffiliated Bidirectional Forwarding Detection (BFD) Echo. Available at https://doi.org/10.17487/RFC9747

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<span class="citation"><cite>IETF RFC 9747</cite>, Unaffiliated Bidirectional Forwarding Detection (BFD) Echo. Available at <a href="https://doi.org/10.17487/RFC9747" target="_blank" rel="noopener">https://doi.org/10.17487/RFC9747</a></span>

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IETF RFC 9747, Unaffiliated Bidirectional Forwarding Detection (BFD) Echo
doi: 10.17487/RFC9747
url: https://doi.org/10.17487/RFC9747

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<cite id="bib-rfc9747">IETF RFC 9747</cite>, Unaffiliated Bidirectional Forwarding Detection (BFD) Echo
<span class="doi">10.17487/RFC9747</span>
</li>