Slicer: A network hypervisor with an automatic mapping of virtual network topology

This paper is dedicated to the problem of dividing the physical network into virtual layers with the different provided quality of service. Currently, this problem is relevant due to the development of 5G networks. Our proposed solution - Slicer is a hypervisor with the capabilities to isolate traffic, to automatically map a virtual topology and to provide required QoS in a virtual layer. One of the key results of this paper is the mapping algorithm, that allows to aggregate several physical switches into virtual one. To reduce the algorithm complexity the heuristic based on Steiner trees is used in the proposed algorithm. The experimental study of Slicer and our mapping algorithm was conducted for the topologies from Topology Zoo library.