A technique for mapping relationships among virtual elements across a system includes, for a server having a virtualized network interface controller (vNIC) with a plurality of vNIC links connected to a switch, identifying relationships between physical ports on the switch and virtual ports on the switch. For each vNIC link, local area network (LAN) interface information on the server is identified and data structures are created establishing topology information between the switch and the server. A mapping of each vNIC link to a respective virtual port on the switch is created by correlating the topology information with the LAN interface information.