Analysis of the functioning of a multi-domain transport software-defined network with controlled optical layer

摘要

In this paper we consider the technology of transport software-defined networks with controlled optical layer. We analyze the technical solutions of the transport software-defined network at all layers. The use of Super Channel technology is offered, which makes it possible to vary the bandwidth of the channel in a wide range for the clients. Comparison of the traditional network architecture with the architecture of transport software-defined networks is carried out. The advantage of the new architecture is a significant reduction in the time for providing the service on-demand for clients. Different variants of building the architecture of transport software-defined networks are considered. The technical features of existing and prospective transponders from the most well-known manufacturers, such as Nokia (fAlcatel- Lucent), Cisco, Huawei, etc., are studied with the aim of obtaining generalized characteristics. As a result of the work, the diagram of the complex model is proposed, which allows estimating the impact of all parameters of the multi-domain transport software-defined network on the possibility of providing the Bandwidth on Demand service. The proposed model is a multi-domain system with two layers of control (using domain controllers and a network-wide controller), supporting Bandwidth on Demand service between the two data centers through the establishment of a Super Channel between them. The developed modeling system can be used as a ready product.