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 standards track draft re-purposes an experimental RFC, 5467, to standards track. 5467 (and this draft) describes a protocol to support bidirectional Label Switched Paths (LSPs) with asymmetric bandwidth. The security considerations section does exist and asserts that there are no additional attacks by adding upstream signaling, which I agree with. General comments: Thank you for referencing the underlying security framework for this draft. Editorial comments: None. Shawn. --