Configuration of shared buffers with virtual output queues in noc routers

A method for a Network on Chip (NoC), comprising:

• managing arriving flits with a plurality of shared buffers, each of the shared buffers corresponding to each input port of a router in the NoC, each of the shared buffers configured to manage the arriving flits with a plurality of logical queues, each of the plurality of logical queues managing the arriving flits according to a virtual channel of the input port associated with the arriving flits and an output port associated with the arriving flits;
• outputting arbitration of flits from the plurality of logical queues from a first set of arbitration logic to a second set of arbitration logic, wherein the first set of arbitration logic arbitrates per input port and per output port;
• and
• arbitrating output flits from the first set of arbitration logic to the output port through the second set of arbitration logic, wherein the second set of arbitration logic arbitrates per output port among flits from the output of the first set of arbitration logic at the input port.