PCEP Extensions for Distribution of Link-State and TE Information for Optical Networks

In order to compute and provide optimal paths, Path Computation Elements (PCEs) require an accurate and timely Traffic Engineering Database (TED). This Link State and TE information has previously been obtained from a link state routing protocol that supports traffic engineering extensions. Link-State (LS) and Traffic Engineering (TE) Information can also be carried in Path Computation Element Communication Protocol (PCEP) using exensions known as PCEP-LS. This document provides further experimental extensions to collect Link-State and TE information for optical networks.