Abstract:
A conceptual structure of a laboratory complex for studying telecommunication networks was proposed. The structure consists of seven levels: theoretical, model, simulation, guest operating system, virtual workstation, root operating system, hardware workstation. Within each level, a task is solved that allows implementing a virtual laboratory. Such a structure allows adjusting the solutions used at each level without the need to adjust the solutions at other levels, while the compatibility condition of the implemented solutions must be met. To implement a virtual laboratory, based on the proposed structure, the following solutions were selected: the Network Simulator software package, the Network Animator and SaVi visualizers, the TraceGraph and X-Graph plotters — to solve the simulation level problem, the guest operating system level problems are solved using Linux Debian, the VMvare Workstation Player software package is used to solve virtual workstation level problems, the root operating system and hardware workstation level problems are solved by means of the software and equipment of the educational institution and/or the student, the model level problem is solved by means of a set of files describing the experiment, the theoretical level problem is solved by a set of provisions and knowledge, on the basis of which the processes in the studied telecommunication network are described. As part of the practical implementation of the virtual laboratory, a video course was created explaining the possibilities of using the software, the ability of the complex to simulate the functioning of a telecommunication system in various operating modes is shown.
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