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IETF RFC 9780
[ACTIVE]

Bidirectional Forwarding Detection (BFD) for Multipoint Networks over Point-to-Multipoint MPLS Label Switched Paths (LSPs)

Metadata

Publisher
IETF
Doc Type
Standard
Pages
12
Abstract
This document describes procedures for using Bidirectional Forwarding Detection (BFD) for multipoint networks to detect data plane failures in point-to-multipoint MPLS Label Switched Paths (LSPs) and Segment Routing (SR) point-to-multipoint policies with an SR over MPLS (SR-MPLS) data plane. Furthermore, this document updates RFC 8562 by recommending the use of an IPv6 address from the Dummy IPv6 Prefix address block 100:0:0:1::/64 and discouraging the use of an IPv4 loopback address mapped to IPv6. In addition, this document describes the applicability of LSP Ping (as an in-band solution) and the control plane (as an out-of-band solution) to bootstrap a BFD session. The document also describes the behavior of the active tail for head notification.
Publication Date
2025-05-01
Status Note
Proposed Standard
DOI
10.17487/RFC9780
Link
https://doi.org/10.17487/RFC9780
Author(s)
Greg Mirsky
Gyan Mishra
Donald E. Eastlake 3rd
Keyword(s)
BFD, Multipoint LSP
Latest version of IETF RFC 9780

Document Versions — IETF RFC 9780

  • ▶ IETF RFC 9780 (2025-05-01)
    THIS DOC [ACTIVE] [LATEST VERSION]

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Amends:
IETF RFC 8562 [Active*]

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Plain text (ISO 690 compliant)

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IETF RFC 9780, Bidirectional Forwarding Detection (BFD) for Multipoint Networks over Point-to-Multipoint MPLS Label Switched Paths (LSPs). Available at https://doi.org/10.17487/RFC9780
Snippet:
IETF RFC 9780, Bidirectional Forwarding Detection (BFD) for Multipoint Networks over Point-to-Multipoint MPLS Label Switched Paths (LSPs). Available at https://doi.org/10.17487/RFC9780

HTML (ISO 690 compliant)

Preview:
IETF RFC 9780, Bidirectional Forwarding Detection (BFD) for Multipoint Networks over Point-to-Multipoint MPLS Label Switched Paths (LSPs). Available at https://doi.org/10.17487/RFC9780
Snippet:
<span class="citation"><cite>IETF RFC 9780</cite>, Bidirectional Forwarding Detection (BFD) for Multipoint Networks over Point-to-Multipoint MPLS Label Switched Paths (LSPs). Available at <a href="https://doi.org/10.17487/RFC9780" target="_blank" rel="noopener">https://doi.org/10.17487/RFC9780</a></span>

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Preview:
IETF RFC 9780, Bidirectional Forwarding Detection (BFD) for Multipoint Networks over Point-to-Multipoint MPLS Label Switched Paths (LSPs)
doi: 10.17487/RFC9780
url: https://doi.org/10.17487/RFC9780
Snippet:
<li>
<cite id="bib-rfc9780">IETF RFC 9780</cite>, Bidirectional Forwarding Detection (BFD) for Multipoint Networks over Point-to-Multipoint MPLS Label Switched Paths (LSPs)
<span class="doi">10.17487/RFC9780</span>
</li>