Introduction to Data Communications (S1, 2015)

The Internet

Learning Objectives

Understand the motivation and terminology for internetworking
Know the role of IP in the Internet
Basic concepts of IP forwarding, IP datagram, and routers vs hosts
Interpret the meaning of IPv4 addresses and classless addressing
Create and analyse routing tables with IPv4 addresses
Understand the role of transport and application layer protocols
Recognise important port numbers
Basic knowledge of TCP and HTTP

Lecture Material

Lecture Notes: View, Print, Source
IP Networking Example: Questions, Answers

Readings

Stallings: chapter 18, 22 and 25
Forouzan: chapter 18, 19, 23 and 25
Kurose: chapter 2, 3 and 4

Videos

Last year: The Internet Protocol, IP Addressing, Special IP Addresses, Internet Applications

Notes

Notes from the lecture are below. Hover over the image to see a description; right-click and view the image to zoom in. Alternatively, download a zip archive with all the images or a printable PDF of the notes.

Internetworking Example IP address, dotted-decimal notation and subnet mask IP Subnet and Address Allocation IP Routing Table Lookup 1 with sub-optimal table IP Routing Table Lookup 2 with sub-optimal table Optimal Routing Table for R2 Send to all using Unicast Send to all using Directed Broadcast Ports and Protocol Numbers

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