Performance Analysis of Shared and Switched Ethernet LANs through Using OPNET Simulation

In this paper, performance analysis of Shared and Switched Ethernet LANs under Different Scenarios through simulation has been attempted using OPNET as simulating tool. The first scenario was comes under Hub Only scenario. The environment of the network is in an office, which covers an area of 100m X 100m. The hub used is a 16 port hub in an Ethernet environment with the following configurationsCenter Node Model = ethernet16_hub, Periphery Node Model = ethernet_station, Link Model = 10BaseT, Number=16, X=50, Y=50, and Radius = 42. The traffic generated by each workstation have the following configurations: ON State Time = constant (200), OFF State Time = constant (0), Interarrival Time = exponential (0.02), Packet Size = Constant (1500). The second scenario was comes under The Hub Low Load; this scenario used the following values for the traffic generated by each workstation: Interarrival Time = exponential (0.08). The average traffic that each workstation will generate followed by the total traffic in the network. The time average for the traffic sent in both Scenarios has been analyzed as well. The third Scenario comes under Scenario comes under Hub and Switch scenario. The Ethernet collision count, count the number of collision count, the traffic received , and the delay for both the Hub Only and Hub and Switch scenarios has been analyzed. The Comparison for the difference in performance in terms of collision count between the selected scenarios (Hub Only, Hub and Switch) has been discussed.