Cisco Systems, Inc. Cisco Systems, Inc. Colt Individual Nokia Segment Routing (SR) can be used to steer packets through a network employing source routing. SR can be applied to both MPLS (SR-MPLS) and IPv6 (SRv6) data planes. This document describes the procedures for performance measurement in SR-MPLS networks using the Simple Two- Way Active Measurement Protocol (STAMP), as specified in RFC 8762, along with its optional extensions specified in RFC 8972 and the SR- specific extensions specified in RFC 9503. These procedures measure SR-MPLS paths (including Segment Lists of SR-MPLS Policies, SR-MPLS IGP best paths, and SR-MPLS IGP Flexible Algorithm (Flex-Algo) paths), as well as Layer-3 and Layer-2 services carried over those paths.