Software defined networks provides a global network view with centralized management. To
maintain the network configuration, multiple controllers are required. The network …

The newly emerged Software Defined Networks (SDN) can apply to Wide Area Network
(WAN) for network control and management. To achieve this, a logically centralized but a …

With the popularization and spread of SDN, the size of SDN networks is increasing; the
controller placement is a key problem in software defined networks (SDNs). In this paper, an …

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 …

Software defined networking (SDN) empower the service providers and enterprisers to
respond quickly to changing business requirements. Due to the logically centralized but …

Software Defined Networks (SDN) is a popular paradigm in the modern networking systems
that decouples the control logic from the underlying hardware devices. The control logic has …

Controller placement issue (CPI) in software-defined networks (SDNs) describes the
controllers' number, location, and assigning of forwarding devices to controllers. Recently …

Software defined networking (SDN) offers centralized network management and effective
resource utilization by offloading the intelligent control plane, responsible for routing and …

Software defined networking emerges as a promising paradigm shift that decouples the
control plane from the data plane. It has the ability to centrally monitor and control the …

Software Defined Network (SDN) is a new type of network structure, which decouples the
data plane from the control planes, and improves network flexibility. However, this …