Refresh-Interval Independent RSVP Fast Reroute Facility Protection

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Publisher: IETF
Doc Type: Standard
Pages: 24
Abstract: The RSVP-TE Fast Reroute (FRR) extensions specified in RFC 4090 define two local repair techniques to reroute Label Switched Path (LSP) traffic over pre-established backup tunnels. Facility backup method allows one or more LSPs traversing a connected link or node to be protected using a bypass tunnel. The many-to-one nature of local repair technique is attractive from a scalability point of view. This document enumerates facility backup procedures in RFC 4090 that rely on refresh timeout, hence, making facility backup method refresh-interval dependent. The RSVP-TE extensions defined in this document will enhance the facility backup protection mechanism by making the corresponding procedures refresh-interval independent, and hence, compatible with the Refresh-Interval Independent RSVP (RI-RSVP) capability specified in RFC 8370. Hence, this document updates RFC 4090 in order to support the RI-RSVP capability specified in RFC 8370.
Publication Date: 2025-03-01
Status Note: Proposed Standard
DOI: 10.17487/RFC9705
Link: https://doi.org/10.17487/RFC9705
Author(s): Chandrasekar R
Tarek Saad
Dante Pacella
Keyword(s): RI-RSVP-FRR

Latest version of IETF RFC 9705

Document Versions — IETF RFC 9705

▶ IETF RFC 9705 (2025-03-01)

THIS DOC [ACTIVE] [LATEST VERSION]

Normative Reference(s)

IETF RFC 2119 [Active*]
IETF RFC 2205 [Active*]
IETF RFC 2747 [Active*]
IETF RFC 2961 [Active*]
IETF RFC 3209 [Active*]
IETF RFC 3473 [Active*]
IETF RFC 4090 [Active*]
RFC4558 — RFC4558 EXTERNAL
IETF RFC 5063 [Active*]
IETF RFC 8126 [Active*]
IETF RFC 8174 [Active*]
RFC8370 — RFC8370 EXTERNAL
IETF RFC 8796 [Active*]

Bibliographic Reference(s)

NIST FIPS 180-4 [Active]
IETF RFC 2104 [Active, Amended*]
RFC5920 — RFC5920 EXTERNAL

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<span class="citation"><cite>IETF RFC 9705</cite>, Refresh-Interval Independent RSVP Fast Reroute Facility Protection. Available at <a href="https://doi.org/10.17487/RFC9705" target="_blank" rel="noopener">https://doi.org/10.17487/RFC9705</a></span>

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IETF RFC 9705, Refresh-Interval Independent RSVP Fast Reroute Facility Protection
doi: 10.17487/RFC9705
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<cite id="bib-rfc9705">IETF RFC 9705</cite>, Refresh-Interval Independent RSVP Fast Reroute Facility Protection
<span class="doi">10.17487/RFC9705</span>
</li>