ns3-sim
An ns3 simulation script to compare various TCP variants under congestion
Install Instructions:
Requirements:
- ns3(3.26) Steps:
- Install ns3 and put ns3.cc in the scratch directory.
- Run the script using
./waf --run "ns3" - For command line options and help,
./waf --run "ns3 --PrintHelp"
Topology
n0 ----------- n1
Topology consists of two nodes N0 and N1 connected by a link of bandwidth 1Mbps and link delay 10ms. We are using a drop-tail queue at the link.
Simulation
There is a TCP agent at N0 which creates FTP traffic destined for N1. There are 5 CBR traffic agents of rate 300 Kbps each at N0 destined for N1. The timing of the flows is as follows:
- FTP starts at 0 sec and continues till the end of simulation
- CBR1 starts at 200 ms and continues till end
- CBR2 starts at 400 ms and continues till end
- CBR3 starts at 600 ms and stops at 1200 ms
- CBR4 starts at 800 ms and stops at 1400 ms
- CBR5 starts at 1000 ms and stops at 1600 ms
- Simulation runs for 1800 ms
Plots
