This Recommendation describes the discovery process for transport entities (Link Connection, Trail and Network Connection). Their sub-processes and basic interactions within the Discovery process are described in a protocol-neutral manner. Other aspects of discovery, such as further specification of mechanisms, protocols and how discovery may be used by applications, is outside the scope of this Recommendation. This version of ITU-T Rec. G.7714/Y.1705 allows the discovery process to be used by the Management Plane as well as the Control Plane 1. In this Recommendation, the Discovery Agent is broken down into the following discovery processes: a) Discovery Trigger; b) Layer Adjacency Discovery; c) Transport Entity Capability Exchange.