Label Switched Path Ping/Traceroute for Segment Routing IGP-Prefix and IGP-Adjacency Segment Identifiers with MPLS Data Planes
RFC 8287, “Label Switched Path Ping/Traceroute for Segment Routing IGP-Prefix and IGP-Adjacency Segment Identifiers with MPLS Data Planes”, is a Proposed Standard document published in December 2017 by N. Kumar, C. Pignataro, G. Swallow, N. Akiya, S. Kini, M. Chen. It has since been updated by RFC 8690, RFC 9214. The canonical text is published by the RFC Editor.
Abstract
A Segment Routing (SR) architecture leverages source routing and tunneling paradigms and can be directly applied to the use of a Multiprotocol Label Switching (MPLS) data plane. A node steers a packet through a controlled set of instructions called "segments" by prepending the packet with an SR header.
The segment assignment and forwarding semantic nature of SR raises additional considerations for connectivity verification and fault isolation for a Label Switched Path (LSP) within an SR architecture. This document illustrates the problem and defines extensions to perform LSP Ping and Traceroute for Segment Routing IGP-Prefix and IGP-Adjacency Segment Identifiers (SIDs) with an MPLS data plane.
What “Proposed Standard” means
An entry-level standards-track specification: stable, peer-reviewed and a solid basis for implementation, though it may still evolve before becoming an Internet Standard.
The canonical text of RFC 8287 is hosted at rfc-editor.org. Available in TXT,HTML.
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