Maintaining QoS-Aware and Resilient Path Programmability for Metaverse in SD-WANs

To improve the performance of the metaverse, it is of great importance to maintain path programmability, which enables dynamic flow control to achieve low latency for metaverse applications in Software-Defined Wide Area Networks (SD-WANs), especially when controllers fail. In this paper, we propose a QoS-Aware path programmability recovery scheme during controller failures, which utilizes the P4 Runtime to achieve fine-grained flow-controller remapping. Simulation results demonstrate that the proposed solution can recover all metaverse flows, improve the total recovery benefit by up to 375%, and substantially reduce the communication overhead of metaverse flows compared wtih baselines.