Performance Studies of FTP, Voice and Video over ATM-Wireless Backbone Network

Modelling The Network

Figure 1 shows the high-level view of ATM backbone network model. We model the network by considering a star topology with four subnets (Northeast, Northwest, Southeast and Southwest). Figure 2 shows the network topology for each subnet where nodes are linked to ATM switch in a star configuration (point-to-point link). A screenshot of ATM Switch configuration is shown in Figure 3. We use OPNET Modeler 17.5 (a credible network simulator) for network modelling and simulation purposes (Fullmer & Garcia-Luna-Aceves, 1997). The various network configurations are described next.

Figure 1.

ATM backbone network model configuration with four subnets