THIS CHAPTER examines backbone networks (BNs) that are used to link LANs together and to link BNs to WANs. We begin with the various types of devices used in BNs and discuss several backbone architectures. We then turn to two technologies designed primarily for use in the BN (ATM and gigabit Ethernet). The chapter ends with a discussion of how to improve BN performance and of the future of BNs.
Understand the internetworking devices used in BNs
Understand several common backbone architectures
Be familiar with gigabit Ethernet
Understand the best practice recommendations for backbone design
Be aware of ways to improve BN performance
CHAPTER OUTLINE ▾
BACKBONE NETWORK COMPONENTS
BACKBONE NETWORK ARCHITECTURES
Backbone Architecture Layers
THE BEST PRACTICE BACKBONE DESIGN
IMPROVING BACKBONE PERFORMANCE
Improving Computer and Device Performance
Improving Circuit Capacity
Reducing Network Demand
IMPLICATIONS FOR MANAGEMENT
Most business organizations realize that information must be stored, retrieved, analyzed, acted on, and shared with others at a moment's notice. Without an enterprisewide network or an Internet connection, moving information from one department LAN to another or to customers is difficult.
Interconnecting the organization's diverse networks ...