Methods, systems, and computer programs are presented for networking communications. One embodiment of a system includes a switch module having one or more ports with a communications interface of a first type and a switch fabric. The system also includes a switch controller that is in communication with the switch module, the switch controller having a first network operating system (ndOS) for controlling packet switching policy in the switch module. The system further includes a server that executes a hypervisor for processing one or more virtual machines. The sever includes a communication interface of the first type for communicating with the switch module, one or more processors, a second ndOS, and one or more virtual network interface cards (VNIC) for communicating with the switch module via the communication interface of the first type.