Create and simulate a network with three 802.11a wireless networks, A, B, and C, joined by a CSMA LAN, as depicted in the diagram. The LAN should have a capacity of 10 Mbps and a propagation delay of 10 microseconds.
There should also be 6 traffic streams, three from one node to another within a wifi domain, and three from a node in one wifi domain to a node in a different wifi domain. These should all be ftp flows, with randomised start times and either 1,000,000 bytes in the flow or 10,000,000, half each, but making sure that at least one of the larger flows is goes from one wifi domain to another and at least one goes from a node in one wifi domain to another node in the same domain.
Run a series of simulations with different settings for the capacity and propagation delay of the LAN: with capacities ranging from 1 Mbps, to 1 Gbps, and propagation delays ranging from 1 microsecond to 100 milliseconds.
In your answer, explain how the behaviour of the network changes as the capacity and delay of the LAN changes. Use graphs to illustrate your observation of the network. Focus on the following issue: is it possible for the traffic between one wifi domain and another to achieve performance as good as traffic within a domain, if the network between the domains is fast enough?
In the answer, a diagram of the network being simulated has been included in the assignment
In the answer , plots of the throughput of the traffic in different scenarios (in regard to the pt-to-pt links) have been presented.
In the answer to , a well argued conclusion with regard to the effect of increasing the capacity of the pt-to-pt links has been presented