Rec. ITU-T G.8310 (12/2020) Architecture of the metro transport network Summary History FOREWORD Table of Contents 1 Scope 2 References 3 Definitions 3.1 Terms defined elsewhere 3.2 Terms defined in this Recommendation 4 Abbreviations and acronyms 5 Conventions 6 Functional architecture of the MTN 7 MTN digital layer networks 7.1 MTNP layer network 7.1.1 MTNP trail termination 7.1.2 MTNP transport entities 7.1.3 MTNP topological components 7.2 MTNS layer 7.2.1 MTNS trail termination 7.2.2 MTNS transport entities 7.2.3 MTNS topological components 7.3 Client/server associations 7.3.1 MTNP/Ethernet MAC frame (ETH) adaptation 7.3.2 MTNS/MTNP adaptation 8 Architecture of the media network supporting the MTN 8.1 Media constructs 8.2 Optical tributary signal group (OTSiG) 8.2.1 MTNS carried over a single Ethernet interface 8.2.2 MTNS carried over more than one Ethernet interface 8.3 Client/server associations 8.3.1 M-AI/MTNS adaptation 9 Management capabilities 9.1 Capabilities 9.1.1 Fault, configuration and performance management 9.1.2 Client/server interaction 9.1.3 Adaptation management 9.1.4 Connection supervision 9.1.4.1 Continuity supervision 9.1.4.2 Connectivity supervision 9.1.4.3 Maintenance information 9.1.5 Connection quality supervision 9.1.6 Management communications 9.1.7 Frequency and time synchronization 9.2 Connection supervision techniques 9.3 Connection supervision applications 9.3.1 Unused connections 9.3.2 Connection monitoring 10 Survivability techniques Annex A Relationship of MTN to other technologies Bibliography