Chapter 1Abstracting Network and Security

In this chapter, we will examine the evolution of Data Center Networking and Security from the 1990s to the present in order to better understand how network virtualization in today's data centers provides solutions that reduce costs, greatly improve manageability, and increase security.

Most IT professionals are familiar with server virtualization using virtual machines (VMs). A virtual machine is purely software. An abstraction layer creates a way to decouple the physical hardware resources from that software. In doing so, the VM becomes a collection of files that can be backed up, moved, or allocated more resources without having to make changes to the physical environment.

We will delve into how ...

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