Abstract
The simulation of large-scale networks is a challenging task especially if the network to simulate is the Dynamic Multipoint Virtual Private Network, it requires expert knowledge to properly configure its component technologies. The study of these network architectures in a real environment is almost impossible because it requires a very large number of equipment, however, this task is feasible in a simulation environment like OPNET Modeler, provided to master both the tool and the different architectures of the Dynamic Multipoint Virtual Private Network. Several research studies have been conducted to automate the generation and simulation of complex networks under various simulators, according to our research no work has dealt with the Dynamic Multipoint Virtual Private Network. In this paper we present a simulation model of the Dynamic and Multipoint Virtual Private network in OPNET Modeler, and a WEB-based tool for project management on the same network.
Highlights
Dynamic multipoint Virtual Private Network “DMVPN” is a solution for building dynamic Virtual Private Network tunnels in an easy, scalable and dynamic manner supported on Cisco IOS routers and Unix Operating System, DMVPN is based on standard technologies such as Resolution Hop Protocol (NHRP) and multipoint Generic Routing Encapsulation for the dynamic creation of tunnels, and Internet Protocol Security (IPsec) to ensure security of data exchanges between multiple sites, as well as routing protocols to route data optimally [1] [2], several scientific studies have been conducted to study the effect of routing protocols on Non Broadcast Multi-Access networks (NBMA) [3] [4]
Treatment and generation: This agent describes the processing that occurs on the server side, converting user data into a project already configured ready to be simulated in Opnet Modeler, this agent is composed of three modules:
9) XML attributes to be used for a specific version Opnet model are prepared according to DTD file of current version of Opnet Modeler installed; 10)The final generated XML file containing the position of each node and its associated configuration ready to be simulated in Opnet Modeler
Summary
Dynamic multipoint Virtual Private Network “DMVPN” is a solution for building dynamic Virtual Private Network tunnels in an easy, scalable and dynamic manner supported on Cisco IOS routers and Unix Operating System, DMVPN is based on standard technologies such as Resolution Hop Protocol (NHRP) and multipoint Generic Routing Encapsulation (mGRE) for the dynamic creation of tunnels, and Internet Protocol Security (IPsec) to ensure security of data exchanges between multiple sites, as well as routing protocols to route data optimally [1] [2], several scientific studies have been conducted to study the effect of routing protocols on Non Broadcast Multi-Access networks (NBMA) [3] [4]. OPNET Modeler is a software tool for network modeling and simulation It allows to design and study communication of large scale networks, devices, protocols, and applications with great flexibility, it allows to study the system performance under varying conditions, it contributes to the development of new protocols and architectures and their optimization and the analysis of the impact of emerging technologies, several books have been written to master OPNET Modeler environment and properly handle its associated objects [6, 7].
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