Simulations and Performance Investigations of Database and E-mail Traffic for Hybrid Routing Schemes over Virtual LAN

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Vasudha Bahl

Abstract

In this paper, performance analysis of the computer networks for combination of conventional model of RIP and OSPF with VLAN is evaluated through simulation which has been attempted using OPNET as simulating tool. In order to participate in optimizing the network performance by minimizing broadcast and collision domains, a proposed network for the Engineering College based on VLAN technique has been developed using the network simulator software (OPNET IT GURU). High throughput with minimum delay is the ultimate demand being required from any network. Traffic congestion is the major problem that deteriorates the performance of a given network. VLAN switches play important roles in further improvements of network performance. Internet traffic effect on the network performance is shown in the paper. It presents the point-to-point delay reduced from 533msec to nearly 494msec. Again the application of VLAN switches shows a better network performance as compared with the existing network. A significant improvement in maximum possible throughput is recognized when using VLAN concept and proposed protocol which shows significant improvement from 1.979packets/sec to 2.0275packets/sec. The results being obtained represent the optimum possible improvements in terms of queuing delay, throughput and minimizing unnecessary traffic to avoid network congestion.


Keywords: Network Simulation, RIP, OSPF, VLAN and OPNET.

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