The Academic Edition also limits the number of devices in particular topologies. For example, a wireless LAN network with 10 devices all generated a high load will reach 50 million events in about 5 minutes of simulation time. The Academic Edition of IT Guru is limited to simulating 50 million events (events are things like receiving a packet, timeout occurring). You cannot change the behaviour of IEEE 802.11 DCF, nor can you simulate IEE 802.11g, n, or e. You can create a topology with multiple wireless LAN devices, set parameters such as RTS Threshold, packet arrival rate and Data Rate, and simulate to measure the network performance. For example, IT Guru includes a model of a wireless LAN device (a laptop using IEEE 802.11b). The set of protocols/devices is fixed - you cannot create new protocols nor modify the behaviour of existing ones (however, you can change common parameter values). It allows you to create and simulation different network topologies. OPNET IT Guru Academic Edition: IT Guru provides pre-built models of protocols and devices.SIIT also has a single user license for the full version of Modeler. They offer a free academic version of IT Guru. OPNET is a company the develops network simulation and analysis software. OPNET Network Simulation OPNET Network Simulation
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