Patent ID: 9191331
Filing Date: 2015-11-17
Classification: H04L

Abstract:
1. A method performed by a controller in a split-architecture network, the controller coupled to a plurality of switches implementing the data plane of the split-architecture network, wherein the controller monitors congestion of traffic groups across the split-architecture network and executes the method for providing delay based data rate control to alleviate congestion of the traffic groups across the split-architecture network, where each traffic group is a flow of data packets to be handled in a same manner, the data packets of each traffic group having a shared ingress switch and egress switch from the plurality of switches for the split-architecture network, the method comprising the steps of: configuring an ingress switch and egress switch for each traffic group to collect delay measurement data for data packets of each traffic group as they arrive at the ingress switch and egress switch; receiving the delay measurement data from the ingress switch and egress switch of each traffic group; checking whether a minimum data packet delay across the split-architecture network for any traffic group exceeds a defined threshold value; and identifying at least one traffic group in the split-architecture network to discard, in response to the defined threshold value being exceeded.