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Control planes of Software Defined Networking have faced a scalability issue because they have been widely applied for large scale networks. To address this issue, control planes with multi-controllers such as Onix and HyperFlow have been proposed in which controllers share global network view. Since the global network view includes topology, states and events of a network, shared information could...
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...
The OpenFlow has been widely used as a standard protocol to actualize Software Defined Networking. With the object of reliability and scalability in a control plane of a more realistic network, management methods utilizing multi-controllers has been getting more developed these days. However, implementing the management methods on multi-controllers might cause inter-controller communication delays...
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