UNIQUE IDENTITIES OF ENDPOINTS ACROSS LAYER 3 NETWORKS

Systems and methods provide for determining unique identities of endpoints across L3 networks. For example, a first networking device of a network management system in a first L3 network can receive a mapping of a first L3 network address to a first L2 network address from a second networking device in a second L3 network. The system can determine that the first L2 network address is associated with a third networking device. The system can receive a mapping of the L3 address to a second L2 network address from the third device. The system can determine that the second L2 address is associated with an endpoint. The system can store the L3 address and the second L2 address as an identity of the endpoint. The system can present network utilization information of the endpoint using traffic to/from the L3 address correlated to the endpoint based on its identity.