- Download 0
- File Size 255.40 KB
- File Count 1
- Create Date 11.02.2020
- Last Updated 11.02.2020
RFC 8664 PDF | Path Computation Element Communication Protocol (PCEP) Extensions for Segment Routing
Segment Routing (SR) enables any head-end node to select any path without relying on a hop-byhop signaling technique (e.g., LDP or RSVP-TE). It depends only on "segments" that are advertised by link-state Interior Gateway Protocols (IGPs). An SR path can be derived from a variety of mechanisms, including an IGP Shortest Path Tree (SPT), an explicit configuration, or a Path Computation Element (PCE). This document specifies extensions to the Path Computation Element Communication Protocol (PCEP) that allow a stateful PCE to compute and initiate Traffic-Engineering (TE) paths, as well as a Path Computation Client (PCC) to request a path subject to certain constraints and optimization criteria in SR networks.
This document updates RFC 8408.