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Network traffic balancing is one of the major factors of building scalable and robust service oriented communication networks. A plethora of algorithms for traffic balancing exists for classical network architecture and for software-defined networks. Having spotted certain deficiencies of existing methods, we are presently developing a stateless transport protocol, one of key features of which is the possibility to use anycast for concurrent connection with several servers. In this article, we consider various methods of a stateless protocol application for enhancing traffic balancing in software-defined networks.

In this article the authors examine the concept of software defined network (SDN). In the beginning there is a short historical background of the "software defined network" as the scientific and technological concept given, by whom it was introduced and what it means. Substantial attention is paid to the OpenFlow protocol. Further, the authors consider development of SDN technology similarly to ideas suggested in MPLS concept, discuss the issues of distributed controllers using ONIX, Kandoo as examples and describe the mechanism of interaction between applications and SDN controller, which they have devised.

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