Pokhabova I. The method of building software-defined networks based on queuing theory

The existing network architecture was developed without considering the needs of today's users and operators of communication networks, resulting in manifest such limitations of existing networks, as the complexity in maintenance, inconsistency of security policy, etc. QoSі, difficulty scaling, the dependence on hardware manufacturers. All this leads to the fact that network development is retarded. The mismatch capacity networking demands of the market led to the emergence of a fundamentally new approach to their building - the creation of software defined networking. SDN network will transform the currently existing static networks into flexible, programmable platforms with the intelligence to dynamic resource allocation, scalability to support large-scale data centers with virtualization to work in a dynamic, highly automated and secure cloud environment.One important task in the way of active formation SDN is to improve the construction of such networks based on Queuing theory, which necessitates the study of methods of multi-criteria optimization of the parameters of software defined networking and improvement of mathematical model routing software and configure the network.The thesis is devoted to research of methods of the analysis and optimization of parameters of a control system of Software Defined Networks. This work studies methods to improve quality indicators such networks.An improved method for minimizing delays for telecommunication networks with variable structures on the basis of the Queuing theory. The paper shows that to effectively reduce the delay you need: with increasing intensity the advent of requirements to increase the performance of switching nodes, not the number of maintenance equipment. The structure of the network should be chosen in such a way that at a given intensity and productivity as much as possible transit nodes.Have developed methods of minimizing delays for software-defined networking allows you to obtain a significant economic effect, which is extremely important for telecommunication networks of Ukraine. These methods calculate the delay information effectively to choose the structure of software defined networking, given delay for a given intensity of management teams and reasonable cost.Improved mathematical model of routing software confguring networks on the basis of the offered criterion of efficiency of search of the shortest routes in the network. Investigated the current requirements for routing strategies in software-defined networks, and existing and promising routing methods for networks.Developed a methodology for optimal design of software-defined networks based on multi-objective optimization with vector synthesis.