Chapter 3. A Basic Virtualized Enterprise
In this chapter, we define the technical requirements posed by the need to virtualize the network. Based on these requirements, we propose and architectural framework comprised of the functional areas necessary to successfully support concurrent virtual networks (VNs) over a shared enterprise physical network.
Networks enable users to access services and resources distributed throughout the enterprise. Some of these services and resources are public: those accessed over the Internet, and others that are private and internal to the enterprise. Every enterprise has unique security and service level policies that govern the connectivity to the different services, whether these are public or private.
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