CITS3002-Project

Student Name	Student Number
Tom Nylund	22708177
Evan Miocevich	24147733

This is the implementation for the Computer Networks (CITS3002) Project: Mini Internet Protocol Stack Simulator (Python).

It simulates a simplified network stack consisting of the Data Link Layer (2), the Network Layer (3) and the Transport Layer (4), in the network topology below:

A--------R1--------B
    L1        L2

(A and B are Hosts, R1 is a Router, L1 and L2 are the physical links/interfaces)

How to run

Dependencies:

• Python

Single command to run:

 python main.py [size]

[size] is the single command line argument, an integer size of the message to send in bytes, e.g 100 for 100-byte message

Project Structure

.
|
├─── config.py
|
├─── devices.py
|
├─── main.py
|
├─── protocol.py
|
├─── README.md (this)
|

Source Code Explanation

config.py -> contains all constants and constraints for the simulation, e.g. MAC and IP addresses, routing tables, arp tables

protocol.py -> defines the UDPSegment, IPPacket, EthernetFrame, TransportLayer, NetworkLayer and DataLinkLayer classes, which represent the headers for the three different layers and those layers respectively

devices.py -> defines the Host and Router classes, which implement the TransportLayer, NetworkLayer and DataLinkLayer classes to form fully functioning devices

main.py -> runs the simulation by taking a command line argument and setting up and connecting all devices in the topology