Control Overhead Reduction using Length-based Same Destination Aggregation for Large Scale Software Defined Networks in Next Generation Internet of Things

The Software Defined Networking (SDN) paradigm is rapidly emerging as a viable alternative in the realm of Next Generation Internet of Things (NG-IoT) due to the inherent challenge posed by traditional computer networks. SDN is revolutionizing traditional network architecture by significantly reducing the reliance on hardware. One of the key challenges of implementing SDN in NG-IoT is the extensive communication that occurs between the switches and the controllers due to the bursty nature of the traffic. Therefore, it is crucial to explore solutions aimed at minimizing this control overhead caused by excessive communication. To alleviate the burden on SDN controllers caused by switches, we propose a new method, named LSDA, which can effectively reduce the flow of control information. To promote fairness within the network, packets heading towards the same controller are aggregated, thereby eliminating the need for complex disassembly in the case of different destination controllers. The simulation results demonstrate that LSDA can effectively reduce the packet loss ratio while simultaneously improving network delay and jitter.