NetworkStimulator-3

Network Simulator 3 (NS3)

Problem Statement

Create N number of nodes and set them in a topology. Create a remote host and place it such that it aligns symmetrically with all nodes. Establish Uplink TCP communication between remote host and all other nodes. Nodes will be sending data to the remote host. Set the positions of nodes using the MobilityHelper Class. Simulate the whole scenario for 50 seconds. Implement this for TcpNewReno and TcpCubic and generate Log Files. Log files should contain the data of congestion window, throughput etc., a. Trace Congestion Window of each node and plot them using gnuplot or any other tool. b. Use FlowMonitor to show the stats like Tx Packets, Tx Bytes, Rx Packets, Rx Bytes, Throughput, Delay, Packet Loss Rate. c. Trace the Instantaneous Throughput of each node and plot them d. Discuss on throughput of each node, if the throughput varies why? e. Implement this setup for different RTT’s and observe how TcpNewReno and TcpCubic performs f. Write your observations and differentiate between TcpNewReno and TcpCubic

Note:This was the Computer Networks Course assignment that we were given

Instructions to Run

1. Make sure your device ( Linux Operating System) has NS-3 installed and properly configured.
2. Place the app.cc in a the scratch folder in the ns3-dev folder ( where ns-3 was installed)
3. Navigate to scratch folder in the terminal by running cd ns3-dev/scratch
4. Run ./waf --run app

Solution to the Problem Statement