OPNET Technologies
7255 Woodmont Avenue
Bethesda, MD 20814

Tel: 240-497-3000

Fax: 240-497-3001
E-mail: mailto:info@opnet.com
Web: http://www.opnet.com/home.html

OPNET is a registered
trademark of OPNET Technologies

© 2002 OPNET Technologies


University:  University of Missouri-Rolla
Name of Sponsoring Professor:  Dr. Ann Miller
Department:  Department of Electrical and Computer Engineering

We are using OPNET for:

1.  Quality of Service (QoS)

The continuing increase in the number of technologies and services in networks has posed a lot of challenges for performance evaluation. Quality of Service (QoS) such as reliability, availability, cost-effectiveness is independent of the adopted technology and applies to both IP-based and ATM-based networks. We use OPNET to evaluate the capacity and performance of networks under study by simulating changes in traffic and topology. We have a small Local Area Network (LAN) and Wireless Local Area Network (WLAN) in our lab, so we can change the topology of the LAN in our lab to measure the performance, compare the results with the OPNET simulation, and evaluate our new ideas for network performance improvements. We plan to figure out the impact of user behavior, especially the intrusion and attacks, on the quality of service provided, and the QoS sensitivity to changes in the model parameters using OPNET.

The efficiency of network is determined by the channel utilization, when the channel is heavily loaded and the congestion occurs, the performance of the network will be greatly degraded. We will use OPNET as a simulation tool to study and model various network design steps and to reconfigure the topology of the network, so that we can avoid the traffic congestion and improve the network performance.

2. Wireless Local Area Network (WLAN)

We will use OPNET to measure interference patterns and analyze the viability of wireless local area networks. At the TSL lab are experimenting with Optimized Link State Routing Algorithm (OLSR) for wireless ad-hoc networks. A comparitive study of OLSR, TBRPF and ZRP algorithms for ad-hoc networks is being done in order to determine the relative strengths of these algorithms. We use OPNET modeler for running the simulations and obtain valuble information to aid our research.