Link aggregation group (LAG) support on a software-defined network (SDN)

In one embodiment, a system includes a software-defined network (SDN) controller including a processor and logic executable by the processor. The logic is executable by the processor to receive a port addition indication that a logical port is configured on a switching device, the switching device being coupled to the SDN controller and a second device, with the logical port representing a link aggregation group (LAG) that includes at least two links between the switching device and the second device. The logic is also executable by the processor to derive and maintain a logical index for all logical ports in software-defined switching devices connected to the SDN controller based on logical port identifiers thereof. Other systems, methods, and computer program products are described in accordance with more embodiments.