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Learning OpenStack Networking (Neutron), Second Edition

You're reading from   Learning OpenStack Networking (Neutron), Second Edition Wield the power of OpenStack Neutron networking to bring network infrastructure and capabilities to your cloud

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Product type Paperback
Published in Nov 2015
Publisher Packt
ISBN-13 9781785287725
Length 462 pages
Edition 1st Edition
Languages
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Author (1):
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James Denton James Denton
Author Profile Icon James Denton
James Denton
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Table of Contents (16) Chapters Close

Preface 1. Preparing the Network for OpenStack FREE CHAPTER 2. Installing OpenStack 3. Installing Neutron 4. Building a Virtual Switching Infrastructure 5. Creating Networks with Neutron 6. Managing Security Groups 7. Creating Standalone Routers with Neutron 8. Router Redundancy Using VRRP 9. Distributed Virtual Routers 10. Load Balancing Traffic to Instances 11. Firewall as a Service 12. Virtual Private Network as a Service A. Additional Neutron Commands B. Virtualizing the Environment Index

Virtual network devices

OpenStack is responsible for configuring and managing many different types of virtual and physical network devices and technologies across the cloud infrastructure.

Virtual network interfaces

OpenStack uses the libvirt KVM/QEMU driver to provide platform virtualization in default Nova configurations. When an instance is booted for the first time, Neutron assigns a virtual port to each network interface of the instance. KVM creates a virtual network interface called a tap interface on the compute node hosting the instance. The tap interface corresponds directly to a network interface within the guest instance. Through the use of a bridge, the host can expose the guest instance to a physical network.

Tip

In OpenStack, the name of a tap interface associated with an instance corresponds to the Neutron port UUID, or unique identifier, which the instance is plugged into.

Virtual network switches

Neutron supports many types of virtual and physical switches and includes built...

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