Abstract
Methodology for a comprehensive assessment of the quality of telecommunication services of transport networks using SDN/NFV technology has been developed. The current state and development trends of communication networks have shown that the potential for growth in productivity and bandwidth of networks based on traditional technologies is practically exhausted. These problems can be solved by the technology of software-defined networks and virtualization of network functions (here-inafter SDN/NFV). This methodology can be the basis for selecting the structure and number of SDN controllers and their optimal location in the communication network based on SDN/NFV, calculating reliability indicators, obtaining loss probabilities of streams and control messages as well as time delays for processing streams in SDN telecommunication equipment. Proposals on balancing the traffic load on SDN controllers of the communication network were also given.
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