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RFC 5884
Bidirectional Forwarding Detection (BFD) for MPLS Label Switched Paths (LSPs),June 2010
- File formats:
- Status:
- PROPOSED STANDARD
- Updates:
- RFC 1122
- Updated by:
- RFC 7726
- Authors:
- R. Aggarwal
K. Kompella
T. Nadeau
G. Swallow - Stream:
- IETF
- Source:
- bfd (rtg)
Cite this RFC:TXT | XML | BibTeX
DOI: https://doi.org/10.17487/RFC5884
Discuss this RFC: Send questions or comments to the mailing listrtg-bfd@ietf.org
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Abstract
One desirable application of Bidirectional Forwarding Detection(BFD) is to detect a Multiprotocol Label Switching (MPLS) LabelSwitched Path (LSP) data plane failure. LSP Ping is an existingmechanism for detecting MPLS data plane failures and for verifyingthe MPLS LSP data plane against the control plane. BFD can be usedfor the former, but not for the latter. However, the control planeprocessing required for BFD Control packets is relatively smallerthan the processing required for LSP Ping messages. A combination ofLSP Ping and BFD can be used to provide faster data plane failuredetection and/or make it possible to provide such detection on agreater number of LSPs. This document describes the applicability ofBFD in relation to LSP Ping for this application. It also describesprocedures for using BFD in this environment. [STANDARDS-TRACK]
For the definition ofStatus,seeRFC 2026.
For the definition ofStream, seeRFC 8729.