MODELING OF COMPUTER NETWORK WITH FAULT-TOLERANCE GATEWAY IN OMNET++

Subject of Research. The paper considers the issues of providing fault-tolerance gateways in computer networks with the use of First Hop Redundancy Protocols (FHRP). The description of FHRP family protocols and simulator OMNeT++ is given. The process of simulation model creation in OMNeT++ using ANSA-INET library is described. Detailed description of HSRP algorithm is presented and researching opportunities for simulation study by OMNeT++ simulator are considered. Work Objective. The aim of the work is the study of computer network models creation with fault-tolerance gateway in OMNeT++ simulator on the HSRP protocol example. Method. The proposed approach to the study of FHRP protocols in computer networks is based on carrying out simulation experiments in simulation environment. We show development potential for computer networks based on FHRP protocols in OMNeT++ using ANSA-INET framework which contains a large library of completed network models, components and protocol implementations. The paper describes in brief the process of computer network model development and ANSA-INET framework main abilities concerning the modeling of fault-tolerance gateways. Main Results. Computer network model with routers cluster is developed. Every router works with HSRP protocol. It gives the possibility to perform a router redundancy, that is a gateway in this computer network. Simulation model of computer network with fault-tolerance gateway is developed. We present the method of developing computer network models using FHRP protocols for fault-tolerance gateway implementation. The main stages of model development and completion are described. Practical Relevance. The presented results can be used in the design of high-reliable and fault-tolerance computer networks providing continuity of service at network gateway failure. The described tools and algorithm for development of computer network models give the possibility to carry out research on gateway fault-tolerance in computer networks and create computer-aided design systems for reliable computer networks.

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