International University of Travnik , Travnik , Bosnia and Herzegovina
Software-defined networks are new innovative solutions in the world of computing that change the way of implementation and management of networks and network devices. The basic features of these networks are the separation of the control and data planes, as well as the establishment of a central point of control over the entire network in the form of an SDN controller. The controller, as a central point in the network, offers a programming environment for accessing applications, which can be used for various purposes such as traffic management, network security policy management, network optimization, etc. SDN enables dynamic adaptation of the network environment to current application requirements or user needs, as well as significantly simpler management and increased network scalability. SDN and OpenFlow architecture provide a way to implement programmable network architectures that can be implemented gradually in an already existing network. This network model differs from traditional networks, which use dedicated hardware devices to control network traffic. A software-defined network can create and control a virtual network or control traditional hardware through software. NFV enables the virtualization of device-based network functions such as firewalls and WAN accelerators. SDN brings many business benefits by making it easier for IT organizations to automate network functions and reduce operational costs.
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