Dynamic QoS for High Quality SD-WAN Overlays

In SD-WAN networks, the traffic issued from multiple high capacity hubs towards low capacity spokes can create congestions in the underlay and degrade unnecessarily the Quality of Service (QoS). To mitigate this issue, shaping policies can be dynamically controlled to adapt to WAN performance and traffic. While existing solutions work for a single hub, at tunnel level, and in a reactive manner, we propose a more advanced solution for multiple hubs at application level. Our Dynamic QoS solution also takes proactive actions to prevent congestions and protect high priority traffic. It ensures a fast convergence towards an optimal rate allocation. This demonstration presents the design and implementation of this feature in AR8140 devices. It presents a performance evaluation in a testbed and simulation.