Network design projects comprise four distinct phases: requirements analysis, logical design, physical design and testing. Designing a network topology is the first step in the logical design phase. A topology is a high-level blueprint of a network, similar to an architectural drawing for a building. After reading this chapter, you will know more about preparing secure, redundant, hierarchical topologies. The topologies will be a useful tool to help you and your customer begin the process of moving from a logical design to a physical implementation of the customer's network.
Read Chapter 5, Designing a network topology, from Top-Down Network Design written by Priscilla Oppenheimer and published by Cisco Press.