Asymmetric network infrastructure with distributed broadcast-select switch and asymmetric network interface controller

A system for a communication infrastructure in a network, the system comprising:

• an asymmetric crossbar switch including a crossbar switch fabric having N ingress ports and M egress ports, and N×M cross-points, each egress and ingress port having the same capacity, N being less than M, and the asymmetric crossbar switch configured to controllably switch to any egress port a signal arriving at any one ingress port;
• and
• at least one select receiver, each select receiver coupled to K egress ports of the M egress ports,
• wherein the asymmetric crossbar switch is comprised in a distributed broadcast select switch (DBSS) controlling the asymmetric crossbar switch to switch signals received over the ingress ports to the egress ports with use of packet addresses in said signals, wherein the network comprises a Clos network, wherein M is equal to (N/2)×(K+1), wherein the DBSS is implemented as a last stage top of rack switch of the Clos network, and wherein a first N/2 of the N ingress ports are coupled to an adjacent level of the Clos network to the DBSS, a second N/2 of the N ingress ports are coupled to a previous hop DBSS, and N/2 egress ports of the DBSS are coupled to a next hop DBSS.