Wide Area and Metropolitan Area Networks
Lynn A. DeNoia, Rensselaer Polytechnic Institute
Introduction
History and Context
Definitions
Challenges
Functional Requirements
Evolution and Coexistence
Facilities and Infrastructure
Digital Transmission
Optical Fiber Systems
Access Technologies
Management
Differences around the World
Switching, Routing, and Signaling
Network Architecture
Switching Technologies
Routing Technologies
Signaling and Interworking
Providers and Services
Carriers and Service Providers
Class of Service, Quality of Service
Virtual Private Networks
Management and Security
Conclusion
Glossary
Cross References
Further Reading
INTRODUCTION
In today's social, political, and economic environment, individuals and organizations communicate and operate over ever-increasing geographic distances. This means that access to and sharing of information and resources must extend beyond the “local” office, building, or campus out across cities, states, regions, nations, continents, and even beyond the planet. Bridging this diversity of distances in ways that satisfy application requirements for speed, capacity, quality, timeliness, and so on at reasonable cost is no simple task from either a technical or a business perspective. Additionally, increasing use of shared, public resources such as the Internet raises levels of concern over security. In this chapter we concentrate on the main elements required to meet such challenges in wide area and metropolitan area networks.
HISTORY ...
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