PCEP Extensions for Performance Measurement for SR-TE and MPLS-TE LSPs with Stateful PCE

In certain networks, network performance data such as packet loss, delay, and delay variation, as well as bandwidth utilization, are critical measures for Traffic Engineering (TE). These data provide operators with the characteristics of their networks for the performance evaluation required to provide Service-Level Agreements (SLAs). Stateful Path Computation Element Communication Protocol (PCEP) extensions have been defined for TE LSPs for Segment Routing (SR) and RSVP. This document describes the PCEP extensions for enabling and reporting end-to-end performance measurement and liveness detection for both PCE-Initiated and PCC-Initiated LSPs for SR-TE over MPLS and IPv6 data planes, and MPLS-TE using RSVP to an Active Stateful PCE.