RFC 4090: Fast Reroute Extensions to RSVP-TE for LSP Tunnels
In plain English — editorial summary, not part of the RFC
This document defines RSVP-TE extensions to establish backup label-switched path (LSP) tunnels for local repair of LSP tunnels. These mechanisms enable the re-direction of traffic onto backup LSP tunnels in 10s of milliseconds, in the event of a failure. Two methods are defined here. The one-to-one backup method creates detour LSPs for each protected LSP at each potential point of local repair. The facility backup method creates a bypass tunnel to protect a potential failure point; by taking advantage of MPLS label stacking, this bypass tunnel can protect a set of LSPs that have similar backup constraints. Both methods can be used to protect links and nodes during network failure. The described behavior and extensions to RSVP allow nodes to implement either method or both and to interoperate in a mixed network. [STANDARDS-TRACK]
Document record
- Document ID
- RFC4090
- Published
- May 2005
- Authors
- P. Pan; G. Swallow; A. Atlas
- Status
- PROPOSED STANDARD
- Stream
- IETF
- Area
- rtg
- Pages
- 38
- Also known as
- —
Topics
Referenced by
4 later RFCs formally update or obsolete part of this document.
- RFC 8271Updates to the Resource Reservation Protocol for Fast Reroute of Traffic Engineering GMPLS Label Switched Paths (LSPs)Current
October 2017
- RFC 8537Updates to the Fast Reroute Procedures for Co-routed Associated Bidirectional Label Switched Paths (LSPs)Current
February 2019
- RFC 8796RSVP-TE Summary Fast Reroute Extensions for Label Switched Path (LSP) TunnelsCurrent
July 2020
- RFC 9705Refresh-Interval Independent RSVP Fast Reroute Facility ProtectionCurrent
March 2025
Related documents
Ranked automatically by shared keywords, IETF area and stream — not by editorial selection.
- RFC 4003GMPLS Signaling Procedure for Egress ControlCurrent
February 2005
- RFC 3480Signalling Unnumbered Links in CR-LDP (Constraint-Routing Label Distribution Protocol)Current
February 2003
- RFC 3477Signalling Unnumbered Links in Resource ReSerVation Protocol - Traffic Engineering (RSVP-TE)Updated
February 2003
- RFC 3473Generalized Multi-Protocol Label Switching (GMPLS) Signaling Resource ReserVation Protocol-Traffic Engineering (RSVP-TE) ExtensionsUpdated
February 2003
- RFC 4872RSVP-TE Extensions in Support of End-to-End Generalized Multi-Protocol Label Switching (GMPLS) RecoveryUpdated
May 2007
- RFC 4873GMPLS Segment RecoveryUpdated
May 2007
- RFC 3209RSVP-TE: Extensions to RSVP for LSP TunnelsUpdated
December 2001
- RFC 5439An Analysis of Scaling Issues in MPLS-TE Core NetworksCurrent
February 2009
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About this page
The document record above — title, authors, date, status, stream, area, relationships, DOI and errata — is imported verbatim from the public RFC Editor index. The “in plain English” section is editorial: written by The metasystema editorial team, not part of the RFC. Where the two differ, the RFC text governs.
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