ІНЖИНІРИНГ ТРАФІКУ В DСN З РОЗГАЛУЖЕНОЮ ТОПОЛОГІЄЮ

Abstract

Urgency of the research. Modern DCNs have a large dimension and differ in the variety of equipment connected to them. This makes it quite difficult to manage this type of network, namely, traffic orchestration. To solve these problems we use the technology of software-configured networks. Also, one of the methods to solve these problems is to use different topologies for building networks. After all, the use of complex topologies is not always rational. The article considers three main topologies of local networks and the method of orchestration of traffic in them. Target setting. The main disadvantage of the methods that have been studied in recent publications is that the routes are formed by each node of the network without taking into account the already formed paths of other nodes. This leads to the reformation of individual sections of already formed paths. Rational use of different topologies increases the efficiency of communication channels and reduces the complexity of traffic orchestration and network maintenance. Actual scientific researches and issues analysis. At present, the centralized formation of multiple paths based on multipath routing in SDN is well described. A modified method of forming multiple paths has been proposed, which is characterized by less time complexity compared to known methods of forming multiple paths. A modified method of multipath routing was also developed, which by taking into account the peculiarities of the SDN organization, in particular due to the presence of a central controller in the network, allows to reduce the time of formation of many access routes to network resources. Uninvestigated parts of general matters defining. Options for the rational use of different topologies to increase the efficiency of communication channels and reduce the complexity of traffic orchestration and network maintenance remain not considered at the moment. The research objective. The task is to describe the three main topologies and consider the method of multipath routing and orchestration of traffic in them, taking into accounts the features and benefits of SDN. The statement of basic materials. The topologies of a fat tree, a double extended star and a double ring are described. The method of multipath routing and orchestration of traffic in them taking into account the features and an advantage of SDN is considered. Conclusions. The analysis of results is carried out and variants of future researchers are planned.