%% You should probably cite draft-ietf-pce-pcep-extension-pce-controller-sr-08 instead of this revision. @techreport{ietf-pce-pcep-extension-pce-controller-sr-02, number = {draft-ietf-pce-pcep-extension-pce-controller-sr-02}, type = {Internet-Draft}, institution = {Internet Engineering Task Force}, publisher = {Internet Engineering Task Force}, note = {Work in Progress}, url = {https://datatracker.ietf.org/doc/draft-ietf-pce-pcep-extension-pce-controller-sr/02/}, author = {Zhenbin Li and Shuping Peng and Mahendra Singh Negi and Quintin Zhao and Chao Zhou}, title = {{PCEP Procedures and Protocol Extensions for Using PCE as a Central Controller (PCECC) for Segment Routing (SR) MPLS Segment Identifier (SID) Allocation and Distribution.}}, pagetotal = 35, year = 2021, month = mar, day = 26, abstract = {The Path Computation Element (PCE) is a core component of Software- Defined Networking (SDN) systems. A PCE-based Central Controller (PCECC) can simplify the processing of a distributed control plane by blending it with elements of SDN and without necessarily completely replacing it. Thus, the LSP can be calculated/set up/initiated and the label forwarding entries can also be downloaded through a centralized PCE server to each network device along the path while leveraging the existing PCE technologies as much as possible. This document specifies the procedures and PCEP extensions when a PCE-based controller is also responsible for configuring the forwarding actions on the routers, in addition to computing the paths for packet flows in a segment routing (SR) network and telling the edge routers what instructions to attach to packets as they enter the network. PCECC is further enhanced for SR-MPLS SID (Segment Identifier) allocation and distribution.}, }