RFC 8029

Detecting Multiprotocol Label Switched (MPLS) Data-Plane Failures, March 2017

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RFC 4379, RFC 6424, RFC 6829, RFC 7537
RFC 1122
Updated by:
RFC 8611, RFC 9041, RFC 9570
K. Kompella
G. Swallow
C. Pignataro, Ed.
N. Kumar
S. Aldrin
M. Chen
mpls (rtg)

Cite this RFC: TXT  |  XML  |   BibTeX

DOI:  https://doi.org/10.17487/RFC8029

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This document describes a simple and efficient mechanism to detect data-plane failures in Multiprotocol Label Switching (MPLS) Label Switched Paths (LSPs). It defines a probe message called an "MPLS echo request" and a response message called an "MPLS echo reply" for returning the result of the probe. The MPLS echo request is intended to contain sufficient information to check correct operation of the data plane and to verify the data plane against the control plane, thereby localizing faults.

This document obsoletes RFCs 4379, 6424, 6829, and 7537, and updates RFC 1122.

For the definition of Status, see RFC 2026.

For the definition of Stream, see RFC 8729.

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