An Independent Forwarding Algorithm Based on Multidimensional Spatial Superposition Model in SDN

The decoupling of control planes and forwarding planes in Software Defined Network (SDN) improves the flexibility of computer networks. However, the emergence of virtual switches brings potential security challenges. For data flows with strict requirement of security, an independent forwarding algorithm based on multidimensional spatial superposition model is proposed. When a new flow enters into the SDN network, under the control of network controller, a set of new forwarding rules for this flow are created, on which an isolated forwarding path is constructed in the forwarding plane. All data of this new flow will be forwarded along this independent logic path. This algorithm increases data safety. The simulation results show the proposed algorithm is valid and simple, which can satisfy the safe requirement of most applications.