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I-LAB Week 4

Course: MIS 589

Professor Name: Wayne Freer

Submitted by: Rikit Patel (D40313678)

INTRODUCTION:

In this I-Lab, OPNET Modeler features are used to build and analyze small network models. In this Lab a network is build using the tools from OPNET modeler and the results have been compared. The behavior of a network because of the addition of a new network with same or more number of nodes has also been studied in this lab and the results have been compared respectively.

Adding second network on Ethernet traffic:

The likelihood of collision of packets increases by adding more nodes to the Ethernet network. As more nodes are added to the network, applications requiring more data are added and as a result of which performance deteriorates. Retransmission of data also increases because of the addition of the second network and as a result makes a complex situation for Ethernet traffic. There is contention of network bandwidth also observed due to the addition of a second network to the Ethernet traffic.

Effect of adding second network on servers:

From the graph obtained we can see that because of the expansion the Ethernet load increased by almost two times, compared to the Ethernet load when there was no additional network.

The graph above compares the average time between the base server and the additional server. It can be seen from the graph that the average load due to the expansion is higher initially, but after some time the load stabilizes and does not increase monotonically.

The above graph shows the delay in traffic in both the scenarios. It is seen that there is not major difference in the Ethernet delays time in both the scenarios.

Effect due to addition of network with 45 nodes:

The addition of a new network with 45 nodes increases the likelihood of collisions of packets to a greater extent than the one discussed and as a result of such complex network traffic, the network may eventually slow down or prevent any further...