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MPLS and Next-Generation Networks: Foundations for NGN and Enterprise Virtualization by Azhar Sayeed, Monique Morrow

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Chapter 2. The Scope of Service Types

This chapter discusses the breadth and depth of services available to the service provider and the enterprise customer. It provides an overview of Layer 2; Layer 3; remote access; and value-added services, such as managed VPN, web hosting, and managed shared services, as well as their applicability in the current environment. Subsequent chapters cover more detailed service descriptions; for example, Chapter 4, “Layer 2 VPNs,” covers Layer 2; Chapter 5, “Layer 3 VPNS,” examines Layer 3 MPLS VPN; and Chapter 6, “Remote Access and IPSec/MPLS VPN Integration,” discusses remote access and IPSec integration.

Although enterprise IT managers must continually manage costs and maintain reliable wide area network (WAN) ...

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