OSPF Bidirectional Forwarding Detection (BFD) Strict-Mode

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Publisher: IETF
Doc Type: Standard
Pages: 10
Abstract: This document specifies the extensions to OSPF that enable an OSPF router to signal the requirement for a Bidirectional Forwarding Detection (BFD) session prior to adjacency formation. Link-Local Signaling (LLS) is used to advertise the requirement for strict-mode BFD session establishment for an OSPF adjacency. If both OSPF neighbors advertise BFD strict-mode, adjacency formation will be blocked until a BFD session has been successfully established. This document updates RFC 2328 by augmenting the OSPF neighbor state machine with a check for BFD session up before progression from Init to 2-Way state when operating in OSPF BFD strict-mode.
Publication Date: 2023-02-01
Status Note: Proposed Standard
DOI: 10.17487/RFC9355
Link: https://doi.org/10.17487/RFC9355
Author(s): Ketan Talaulikar
Peter Psenak
Albert Fu
Rajesh Shetty
Keyword(s): IGP, OSPF

Latest version of IETF RFC 9355

Document Versions — IETF RFC 9355

▶ IETF RFC 9355 (2023-02-01)

THIS DOC [ACTIVE] [LATEST VERSION]

Normative Reference(s)

IETF RFC 2119 [Active*]
IETF RFC 2328 [Active*]
IETF RFC 5340 [Active*]
RFC5613 — LLS EXTERNAL
IETF RFC 5838 [Active*]
RFC5882 — RFC5882 EXTERNAL
IETF RFC 8174 [Active*]

Bibliographic Reference(s)

IETF RFC 5709 [Active*]
RFC5880 — BFD EXTERNAL
RFC5883 — BFD-MHOP EXTERNAL
RFC6213 — RFC6213 EXTERNAL
IETF RFC 7474 [Active*]
RFC9129 — RFC9129 EXTERNAL

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IETF RFC 9355, OSPF Bidirectional Forwarding Detection (BFD) Strict-Mode. Available at https://doi.org/10.17487/RFC9355

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IETF RFC 9355, OSPF Bidirectional Forwarding Detection (BFD) Strict-Mode. Available at https://doi.org/10.17487/RFC9355

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<span class="citation"><cite>IETF RFC 9355</cite>, OSPF Bidirectional Forwarding Detection (BFD) Strict-Mode. Available at <a href="https://doi.org/10.17487/RFC9355" target="_blank" rel="noopener">https://doi.org/10.17487/RFC9355</a></span>

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IETF RFC 9355, OSPF Bidirectional Forwarding Detection (BFD) Strict-Mode
doi: 10.17487/RFC9355
url: https://doi.org/10.17487/RFC9355

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<li>
<cite id="bib-rfc9355">IETF RFC 9355</cite>, OSPF Bidirectional Forwarding Detection (BFD) Strict-Mode
<span class="doi">10.17487/RFC9355</span>
</li>