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IETF RFC 9722
[ACTIVE]

Fast Recovery for EVPN Designated Forwarder Election

Metadata

Publisher
IETF
Doc Type
Standard
Pages
14
Abstract
The Ethernet Virtual Private Network (EVPN) solution in RFC 7432 provides Designated Forwarder (DF) election procedures for multihomed Ethernet Segments. These procedures have been enhanced further by applying the Highest Random Weight (HRW) algorithm for DF election to avoid unnecessary DF status changes upon a failure. This document improves these procedures by providing a fast DF election upon recovery of the failed link or node associated with the multihomed Ethernet Segment. This document updates RFC 8584 by optionally introducing delays between some of the events therein. The solution is independent of the number of EVPN Instances (EVIs) associated with that Ethernet Segment, and it is performed via a simple signaling in BGP between the recovered node and each of the other nodes in the multihoming group.
Publication Date
2025-05-01
Status Note
Proposed Standard
DOI
10.17487/RFC9722
Link
https://doi.org/10.17487/RFC9722
Author(s)
Patrice Brissette
Ali Sajassi
Luc André Burdet
John Drake
Jorge Rabadan
Keyword(s)
EVPN, Designated Forwarder, Convergence, Recovery
Latest version of IETF RFC 9722

Document Versions — IETF RFC 9722

  • ▶ IETF RFC 9722 (2025-05-01)
    THIS DOC [ACTIVE] [LATEST VERSION]

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Amends:
IETF RFC 8584 [Active*]

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IETF RFC 9722, Fast Recovery for EVPN Designated Forwarder Election. Available at https://doi.org/10.17487/RFC9722
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IETF RFC 9722, Fast Recovery for EVPN Designated Forwarder Election. Available at https://doi.org/10.17487/RFC9722

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IETF RFC 9722, Fast Recovery for EVPN Designated Forwarder Election. Available at https://doi.org/10.17487/RFC9722
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<span class="citation"><cite>IETF RFC 9722</cite>, Fast Recovery for EVPN Designated Forwarder Election. Available at <a href="https://doi.org/10.17487/RFC9722" target="_blank" rel="noopener">https://doi.org/10.17487/RFC9722</a></span>

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IETF RFC 9722, Fast Recovery for EVPN Designated Forwarder Election
doi: 10.17487/RFC9722
url: https://doi.org/10.17487/RFC9722
Snippet:
<li>
<cite id="bib-rfc9722">IETF RFC 9722</cite>, Fast Recovery for EVPN Designated Forwarder Election
<span class="doi">10.17487/RFC9722</span>
</li>