Layered control plane for reducing information sharing in OpenFlow networks

This paper proposes an architecture of layered control plane of OpenFlow networks managed by multiple controllers. Considering the logical network partitioning to decide administrative domains of controllers, this paper focuses on the relationship between the network partitioning and the amount of global network information shared among controllers. Then, this paper handles the issue as a mathematical problem based on graph clustering and analyzes effective network partitioning methods in reducing the amount of global network information.