This standard specifies the necessary protocol and management elements to a) Facilitate multi-vendor inter-operability and the use of standard management tools to discover and make available physical topology information for network management. b) Make it possible for network management to discover certain configuration inconsistencies or malfunctions that can result in impaired communication at higher layers. c) Provide information to assist network management in making resource changes and/or re-configurations that correct configuration inconsistencies or malfunctions identified in b) above. d) Provide IETF MIB (IETF RFC 2922 [B9]) to describe a network's physical topology and associated systems within that topology. e) Provide YANG configuration and operational models supporting Station and Media Access Control Connectivity Discovery.