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 …

In this letter, we propose a mathematical model for the controller placement problem in
Software Defined Networks (SDN). More precisely, given a set of switches that must be …

Controller placement is a key problem in software defined networks (SDNs). Previously, the
solution to this problem only focused on propagation latency but ignored the load of …

Currently, one of the main enablers for network evolution is software-defined networking
(SDN), where the control plane is decoupled from the data plane. A controller, as a …

Software defined network (SDN) decouples the control plane from packet processing device
and introduces the controller placement problem. The previous methods only focus on …

Software defined network (SDN) develops a centralized control plane to manage the whole
network. If the scale of the network is large, it is necessary to deploy multiple distributed …

We consider a distributed Software Defined Networking (SDN) architecture adopting a
cluster of controllers to improve network scalability and reliability. Different from previous …

By decoupling control plane and data plane, Software-Defined Networking (SDN) approach
simplifies network management and speeds up network innovations. These benefits have …

Software defined networking shifts the control plane of forwarding devices to one or more
external entities known as controllers. Determining the optimal location of controllers in the …

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 …