Controller placement is an important problem in software-defined networks. If a controller
fails, there may be no controller with enough spare capacity to serve switches of the failed …

The new network requirements are rising with internet scalability and expansion of its
coverage. The traditional network cannot support recent needings, so a new architecture …

In this paper we address the problem of Software Defined Networking (SDN) controller
placement in large networks. Indeed, to solve the scalability issue raised by the centralized …

The controller is indispensable in software-defined networking (SDN). With several features,
controllers monitor the network and respond promptly to dynamic changes. Their …

Software-defined networks offer flexible and intelligent network operations by splitting a
traditional network into a centralized control plane and a programmable data plane. The …

Large networks are always partitioned into several small networks when deploying software
defined networking (SDN). The network partitioning with SDN control planes open many …

As a novel network architecture, Software Defined Networking (SDN) has been drawing
more and more attention. SDN decouples the controller logic from the data plane and it …

A key concern in the deployment of Software Defined Networks (SDN) is the location of the
controller. One issue network operators will have to face is how to expand their network at …

In the context of wide area networks (WANs) and software defined networking (SDN),
reducing the communication delays experienced by the network devices is an important …

Abstract Software-Defined Networking (SDN) architecture has emerged in response to
limitations of traditional networking architectures in satisfying today's complex networking …