A network switch, based on the PCI Express protocol, is disclosed. The switch is in communication with a processor, local memory and includes a plurality of non-transparent bridges and, optionally transparent bridges, leading to PCI Express endpoints. By configuring the non-transparent bridges appropriately, the network switch can facilitate simultaneous communication between any two sets of servers without needing to store any data in the local memory or FIFO resources of the switch. For example, the network switch may configure the non-transparent bridges so as to have access to the physical memory of every server attached to it. It can then move data from the memory of any server to the memory of any other server.