I have rev iewed 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. G.709 Optical Transport Network introduces new parameters that need to be expressible in GMPLS and OSPF-TE. This drafts adds support within the existing framework. The security considerations section appropriately consists of a brief explanation of why a citation to the existing security framework document is sufficient and the citation to the relevant document which is sufficiently recent (2010) for these purposes. The document raises no new security considerations that need to be considered since routing is not considered to be a confidentiality or integrity layer for Internet purposes. If preventing traffic analysis was desired it would probably be more appropriate to apply link layer security and flood fill the links in any case. -- Website: http://hallambaker.com/