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 draft describes a method for encapsulating and delivery of Data Communication Network (DCN) messages over the General Associated Channel (G-ACh). The purpose of which, is to allow additional mechanisms to control/manage MPLS (Multiprotocol Label Switching) networks. The security considerations section does exist and describes that DCN messages are required to have adequate security mechanisms. The section doesn't describe what those mechanisms are, but should at least provide a reference from other MPLS RFC/I-Ds that do. General comments(s): None. Editorial comment(s): Expand the abbreviation of OAM in the introduction section. The following sentence is truncated: There is no need to create a CCh for every LSP between a pair of s/security attack/security attacks/ -- Shawn.