Cisco Systems, Inc. Cisco Systems, Inc. Bell Canada Huawei Nokia Segment Routing (SR) leverages the source routing paradigm. SR is applicable to both Multiprotocol Label Switching (SR-MPLS) and IPv6 (SRv6) data planes. This document describes procedures for Performance Measurement in SR networks using Simple Two-Way Active Measurement Protocol (STAMP) defined in RFC 8762 and its optional extensions defined in RFC 8972 and further augmented in RFC 9503. The procedure described is used for links, end-to-end SR paths (including SR Policies and SR Flexible Algorithm IGP paths) as well as Layer-3 and Layer-2 services in SR networks, and is applicable to both SR-MPLS and SRv6 data planes.