• How and why the Internet was created
• ISPs and IXPs
• How traffic is sent across networks using peering arrangements
• The BGP
• More details on IP
• Operations of the TCP and the UDP
In this hour, we look at the Internet in more detail. Using the general concepts outlined in previous hours, we examine how traffic is transported across the Internet through Internet service providers (ISPs) and Internet Exchange Points (IXPs). We examine ideas on how to select an ISP and how we might exploit the features of the Internet Protocol (IP), the Transmission Control Protocol (TCP), and the User Datagram Protocol (UDP) to provide better performance.