I have reviewed the document "Unanswered Questions in the Path Computation Element Architecture" (draft-ietf-pce-questions-06.txt) as part of the Operational directorate's ongoing effort to review all IETF documents being processed by the IESG.  These comments were written primarily for the benefit of the operational area directors.  Document editors and WG chairs should treat these comments just like any other last call comments.   Intended status: Informational Current draft status: Submitted to IESG for Publication   Summary: The document discusses unanswered questions from available PCE architectural views with respect to the interactions between architectural components and in an architectural context with reference to other architectural components, existing protocols, and recent IETF work efforts. The document further suggests how the architectural components might be combined to provide advanced PCE function.   I think the document is well-written. No specific management aspects have been discussed. I don't see any issues from the operations and management pov.   No draft nits found.   Mehmet