http://www.rfc-editor.org/rfc/rfc5718.txt
RFC 5718: An In-Band Data Communication Network For the MPLS Transport Profile, D. Beller, A. Farrel2010-01-01T23:00:00-00:00This document describes how the G-ACh may be used to provide the infrastructure that forms part of the Management Communication Network (MCN) and a Signaling Communication Network (SCN). Collectively, the MCN and SCN may be referred to as the Data Communication Network (DCN). This document explains how MCN and SCN messages are encapsulated, carried on the G-ACh, and demultiplexed for delivery to the management or signaling/routing control plane components on an MPLS-TP node. [STANDARDS-TRACK]