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RFC 9884: Label Switched Path Ping for Segment Routing Path Segment Identifier with MPLS Data Plane

In plain English — editorial summary, not part of the RFC

Segment Routing (SR) leverages source routing to steer packets through an ordered list of instructions called "segments". SR can be instantiated over the MPLS data plane. Path Segment Identifiers (PSIDs) are used to identify and correlate bidirectional or end-to-end paths in SR networks. This document defines procedures (i.e., six new Target Forwarding Equivalence Class (FEC) Stack sub-TLVs) for the use of LSP Ping to support connectivity verification and fault isolation for SR paths that include PSIDs. The mechanisms described enable the validation and tracing of SR paths with Path SIDs in MPLS networks, complementing existing SR-MPLS Operations, Administration, and Maintenance (OAM) capabilities.

Document record

Document ID
RFC9884
Published
October 2025
Authors
X. Min; S. Peng; L. Gong; R. Gandhi; C. Pignataro
Status
PROPOSED STANDARD
Stream
IETF
Area
rtg
Pages
19
Also known as
—

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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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canonical URL: /rfc/9884-label-switched-path-ping-for-segment-routing-path-segment-identifier-with-mpls-d