In this chapter, we learned the various designs used by organizations to connect to the Internet. Then we saw the widely used routing protocol BGP, its features when compared to IGPs, and its configuration. Sadly, Packet Tracer doesn't support iBGP, but if you can get your hands on the real hardware or dynamips, do try it out.

In the next chapter, we will learn about the latest game changer of networks—IPv6. We will start by learning how to assign IP addresses to it and then go about configuring routing. Finally, we'll learn how to use both IPv4 and IPv6 in a network.