README.md

Two scheduling algorithms: Deficit Round Robin (DRR) and Strict Priority Queue (SPQ), which are used to prioritize network traffic based on different QoS requirements are implemented in the ns-3 network simulation framework. We evaluate the performance of the framework using Wireshark IO Graphs and compare the pre and post QoS scenarios for each algorithm.

Developers

1. Tanya Jain
2. Parisa Abbasi
3. Arash Ansari

Set Up

Clone the repository in the scratch directory of your ns3 installation:

cd scratch
git clone git@github.com:TanyaaCJain/QoS.git
cd QoS

You need to have the configuration files for every Differentiated Service established. You can find them in the config directory. The files are named according to the service they represent. For example, the configuration file for the

• SPQ service is spq.txt
• DRR service is drr.txt

Note: The lab 3.2 is an implementation of a simple queue and has its own configuration file simple.txt.

Run

To run the simulation, you need to specify the configuration file as an argument to the program via the command line using the --i flag. For example, to run the simulation for the SPQ service, you would run the following command:

./ns3 run "qos --i=scratch/qos/config/spq.txt"

The name of the configuration file helps in identifying the service that is being simulated with the help of the factory.h file. No code needs to be altered to run the simulation for a different service.

Results

The results of the simulation are stored in the output directory. The IO Graphs are stored in the form of .png files.