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, identifying local area network (LAN) interface information on the server; creating data structures establishing topology information between the switch and the server; and creating a mapping of each vNIC link to a respective virtual port on the switch by correlating the topology information with the LAN interface information.