Chapter 3. Pv4 Routing Design

This chapter describes IP addressing and routing protocols, and includes the following sections:

• Making the Business Case

• IPv4 Address Design

• IPv4 Routing Protocols

• IPv4 Routing Protocol Selection

This chapter discusses Internet Protocol (IP) version 4 (IPv4) addressing design and routing protocol selection. After introducing why these topics are important, the address design considerations are explored. The factors that differentiate the available IPv4 routing protocols are described, followed by a discussion of the specific protocols. The considerations for choosing the routing protocol (or protocols) for your network complete this chapter.

Note

In this book, the term IP refers to IPv4. IP version 6 (IPv6), a successor to IPv4 not yet in common use, is introduced in Chapter 10, "Other Enabling Technologies."

Note

Appendix B, "Network Fundamentals," includes material that we assume you understand before reading the rest of the book. Thus, you are encouraged to review any of the material in Appendix B that you are not familiar with before reading the rest of this chapter.