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 defined in RFC 8762, along with its optional extensions defined in RFC 8972 and further augmented in RFC 9503. The described procedures are used for SR-MPLS paths (including Segment Lists of SR-MPLS Policies, SR-MPLS IGP best paths, and SR-MPLS IGP Flexible Algorithm paths), as well as Layer-3 and Layer-2 services over the SR-MPLS paths.