Chapter 1.  OpenStack Networking in a Nutshell

Information technology (IT) applications are rapidly moving from dedicated infrastructure to a dynamic cloud-based infrastructure. This move to cloud started with server virtualization, where a hardware server ran as a virtual machine on a hypervisor. The adoption of cloud-based applications has accelerated due to factors such as globalization and outsourcing, where diverse teams need to collaborate in real time.

Server hardware connects to network switches using Ethernet and IP to establish network connectivity. However, as servers move from physical to virtual, the network boundary also moves from the physical network to the virtual network. Traditionally, applications, servers, and networking were ...

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