An application for my CSS432 class (Computer Networking).

To create programs that simulate receiving a packet, processing it, looking up the output interface in the table, and forwarding it.

• A struct that holds an IPv4 packet.
• A function that reads necessary header information for the packet type, looks up what output port to send the packet out on, and returns that value.
• Forwarding function uses algorithm of Longest Prefix Match to determine the forwarding output port.
• Use principle of longest match to determine output port.
• Main driver function to generate packets that test routing functionality and output the results in the format "Packet from IP to IP was routed on interface X".

• A struct that holds an Ethernet frame.
• A function that reads necessary header information for the packet type, looks up what output port to send the packet out on and returns that value.
• Switch forwarding function builds the table from packets that travel through the switch.
• Main driver function to generate packets that test switching functionality and output the results in the format "Frame from MAC to MAC was switched onto interface(s) X".

• Run main.cpp.

• The router and switch should each have at least 4 network interfaces.