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A R T I C L E I N F O A B S T R A C T Article history: Received: 17 June, 2019 Accepted: 31 July, 2019 Online: 16 August, 2019 Recently, communication demands often change because of the various network services in companies and individuals. Software Defined Networking (SDN) has emerged as a viable control paradigm that allows flexible communication, using OpenFlow as its default standard and enabler. However, when changes happen frequently in SDN networks due to unforeseen reasons -such as a network failure or topology changesit takes a long time to perform all the operations. For instance, to change a routing path, first new paths must be calculated, then the controller must transmit the commands to the network elements, which has to process those commands. This process can cause a delay, or even disruption, in the communication service. Therefore, this paper proposes a network control method to reduce the time to change a path using OpenFlow.

A Proposal of Control Method Considering the Path Switching Time of SDN and Its Evaluation