• Creation of a Netml account
o Pre-existing Netml accounts will also be provided.
• Create and edit a network (see Figure).
• Randomly generate traffic.
o Use Add/Randomise traffic streams
o Gaussian with random mean, from Pareto distribution, with mean 1 Mbps, shape parameter 1.2, Use threshold 0.33 (so on average 1/3 of all node-pairs have a traffic-stream). Set standard deviation to the same as mean, by selecting all links and editing a link. 
• Dimension network.
o Select all links add distance parameter and set to 1 on all links using edit on a link.
o Use Routing, Traffic and Loss tool
o Set module size to 10 Mbps
o Set initial cost to 1, unset use calculated costs, set store link capacities; set access link utilisation to 0.25.
• Analyse availability and loss performance of network.
o Select all links and add unavailability parameter and set to 0.995, using edit link.
o Use Availability Analysis.
o Display availability of traffic streams.
• Design a lower layer using WDM.
o Select Layered design tool
o Add a layer 0 with module size 10 Gbps
o Set the module size of the other layer to 10 Mbps
o Set assign wavelength for layer 0.
• Simulate network using NS3.
o Select all traffic streams and set NS3 parameters to FTP flow
o Randomise NS3 start-time and flow sizes using Randomise traffic streams.
o Select all llinks and set NS3 parameters to pt-to-pt link of 10 Mbps.
o At four different nodes, create a trace called nodeXtraffic, monitor the LocalDeliver events, and at each occurrence, add the size of the arriving packet to the counter.
o Create a plot showing all four traces – select delta averaging (so that the average throughput per second, averaged over 0.2 seconds, will be displayed).
o Select NS3 Simulation... and click submit.
o Wait for the results and view the plot of throughput.

References