I have reviewed this document as part of the security directorate's ongoing effort to review all IETF documents being processed by the IESG.  These comments were written primarily for the benefit of the security area directors.  Document editors and WG chairs should treat these comments just like any other last call comments.

This is an early review that was intended for completion in early December; sorry I'm so late, and I hope the review is still useful.

The summary of the review is Ready.

From the abstract, this document defines a YANG data model for the management of Path Computation Element communications Protocol (PCEP) for communications between a Path Computation Client (PCC) and a Path Computation Element (PCE), or between two PCEs.  The data model includes configuration and state data.

The security considerations section appears complete, and complies with the requirements set forth in https://trac.ietf.org/trac/ops/wiki/yang-security-guidelines. This document is on the right track, from a security perspective.