ITU-T Recommendations

This Recommendation describes the methods, procedures and transport plane mechanisms for discovering layer adjacency for ASON according to the requirements of ITU-T Rec. G.7714/Y.1705 and architecture of ITU-T Rec. G.8080/Y.1304. Layer Adjacency Discovery describes the process of discovering the link connection end-point relationships and verifying their connectivity. Two alternative methods are described: one using a test set in the client layer, the other using in-band overhead in the server layer. Additional actions that may be required for obtaining Physical Media Adjacency Discovery, Control Entity Logical Adjacency discovery, Service Capability, etc., will be addressed in future Recommendations.