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RFC 9884
Title: Label Switched Path Ping for
Segment Routing Path Segment Identifier with
MPLS Data Plane
Author: X. Min,
S. Peng,
L. Gong,
R. Gandhi,
C. Pignataro
Status: Standards Track
Stream: IETF
Date: October 2025
Mailbox: [email protected],
[email protected],
[email protected],
[email protected],
[email protected]
Pages: 19
Updates/Obsoletes/SeeAlso: None
I-D Tag: draft-ietf-mpls-spring-lsp-ping-path-sid-13.txt
URL: https://www.rfc-editor.org/info/rfc9884
DOI: 10.17487/RFC9884
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.
This document is a product of the Multiprotocol Label Switching Working Group
of the IETF.
This is now a Proposed Standard.
STANDARDS TRACK: This document specifies an Internet Standards Track
protocol for the Internet community, and requests discussion and suggestions
for improvements. Please refer to the current edition of the Official
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