Route maps are similar to access lists; they both have criteria for matching the details of certain packets and an action of permitting or denying those packets. This chapter explains the basics of Route Maps. Included are sample exercises to help you practice administration and use of Route Maps.
Learn the very basics of TCP/IP in this sample chapter by Mark Sportack. Find out how TCP/IP interacts with the internet, as well as with other communication protocols.
This sample chapter from CCIE: Routing TCP/IP Volume I shows how routers can discover how to correctly switch packets to their respective destinations automatically and share that information with other routers via dynamic routing protocols.