Junos Enterprise Routing, 2nd Edition

Chapter 2. Enterprise Design

Changes made to network traffic patterns, server architectures, and traffic types in the past couple of years have caused existing network design philosophies to become outdated. Preexisting multitiered network designs are no longer able to meet the scaling, management, or survivability demands of the current enterprise; in the following pages we present new network designs that utilize the capabilities of the Juniper Networks Junos-based equipment that expressly meet these new demands.

This chapter examines the new network design guidelines that are being implemented in the enterprise today, as well as the goals and benefits of these designs when compared to the legacy architectures. The chapter concludes with a series of design scenarios and solutions at large enterprises that use Juniper equipment.

To focus on the design aspects of the network without getting bogged down in the technical details of the services and protocols, this chapter is tightly connected to Chapters 1 and 3. The previous chapter looked at the Juniper Networks devices that are offered at the enterprise level, and the next chapter delves into the details of this equipment’s technical capabilities. But in this chapter we focus on the outcome of the design, not the details of the implementation. For those details, refer to the other chapters in this book.