I Figure 10-1: Network Simulation The simulation Process: Step 1: Before the Simulation, Collect Data Data must be good Otherwise, GiGo(garbage in, garbage out Collect data on the current network Forecast growth
6 Figure 10-1: Network Simulation • The Simulation Process: Step 1: Before the Simulation, Collect Data – Data must be good – Otherwise, GIGO (garbage in, garbage out) – Collect data on the current network – Forecast growth
+Project: First Scenario: Main [Subnet: top Offi. ox Eile Edit yiew Scenarios Topology Traffic Protocols Simulation Results Figure 10-2: OPNET T Guru 125 Node Template Work area Dragged Icon The process Object Palatte: (ethernet_ advanced) ethemet advanced Configure Palette Add node icons to the ethermet16_layer 4_switch_ ad ethetnet16_layer4_switch_int ethenet16_switch_adv simulation work area ethernet255 hub ady (clients, servers, ethernet2 bridge adv ethemet2 bridge int ethernet]6 swtch inl switches, routers, etc. Object Palette ethetnet32 hub ad ethernet bridge adv Drag from the Object Palette ethernet4 switch ady ethenel4 switch int Defining new obiect [ethernet32 hub adv]
7 Figure 10-2: OPNET IT Guru Node Template Dragged Icon The Process: 2. Add node icons to the simulation Work Area (clients, servers, switches, routers, etc.) Drag from the Object Palette Object Palette Work Area
Figure 10-4: Configured Simulation Model Specify the topology by adding transmission lines between nodes(and specifying line speeds Click on two nodes click on a transmission line icon in the object palette
8 Figure 10-4: Configured Simulation Model 3. Specify the topology by adding transmission lines between nodes (and specifying line speeds). Click on two nodes, click on a transmission line icon in the object palette
Figure 10-3: Configuring a Frame Relay CIR H(contract Parameters)Table 口x Athibutc Ougcirg CIR (te/sec) 128C0 OulyLir y bu lilaI 640C0 Ougcirg Be lbit 40 Iniuui ir u CR (i\/secI Sallt Incoming Bc lbt] Sam∈ Iniuui ir y be lil:l Sdlt 4 Configure EACH node and transmission lines(P Time-to-Live value, etc. 0< In this case, Frame Relay burst speed rate
9 Figure 10-3: Configuring a Frame Relay CIR 4. Configure EACH node and transmission lines (IP Time-to-Live value, etc.). In this case, Frame Relay burst speed rate
Figure 10-4: Configured Simulation Model 5 Add applications, which generate traffic data Applications ,,中n 群把品 10
10 Figure 10-4: Configured Simulation Model 5. Add applications, which generate traffic data Applications