,What you need for this book
While SDN is being driven by solutions both from vibrant open source community and from
networking vendors we focused on leveraging the open source software with a hands-on
approach to gaining technology and implementation insights. You will need computers or
servers running on a Intel x86 processor with VT extensions, at least 4 GB RAM and 100 GB
HDD. Each computer will require at least three network interfaces.
Considering the rapid updates to technology and implementation we strongly recommend
following the relevant links supplied for topics for further reading.
Who this book is for
The target audience for this book is system and network administrators, IT data center
managers, cloud infrastructure providers, and users of private and public clouds. It will also
be a good introduction for networking enthusiasts.
The readers are assumed to have a very basic knowledge of OpenStack, networking, and
Linux. Armed with the basic knowledge, this book will help the readers get an overview of
popular SDN technologies and how these are used in an OpenStack-based cloud
infrastructure.
Conventions
In this book, you will find a number of text styles that distinguish between different kinds of
information. Here are some examples of these styles and an explanation of their meaning.
Code words in text, database table names, folder names, filenames, file extensions,
pathnames, dummy URLs, user input, and Twitter handles are shown as follows: "The
neutron firewall-create command supports an option to pick a specific router as well."
Any command-line input or output is written as follows:
$ sudo apt-get install openvswitch
New terms and important words are shown in bold. Words that you see on the screen, for
example, in menus or dialog boxes, appear in the text like this: "In the left navigation bar, click
on the Nodes."
NOTE
Warnings or important notes appear in a box like this.
,TIP
Tips and tricks appear like this.
Reader feedback
Feedback from our readers is always welcome. Let us know what you think about this book—
what you liked or disliked. Reader feedback is important for us as it helps us develop titles
that you will really get the most out of.
To send us general feedback, simply e-mail , and mention the book's
title in the subject of your message.
If there is a topic that you have expertise in and you are interested in either writing or
contributing to a book, see our author guide at www.packtpub.com/authors.
Customer support
Now that you are the proud owner of a Packt book, we have a number of things to help you
to get the most from your purchase.
Downloading the color images of this book
We also provide you with a PDF file that has color images of the screenshots/diagrams used in
this book. The color images will help you better understand the changes in the output. You can
download this file
from https://www.packtpub.com/sites/default/files/downloads/SoftwareDefinedNetworking
withOpenStack_ColorImages.pdf.
Errata
Although we have taken every care to ensure the accuracy of our content, mistakes do happen.
If you find a mistake in one of our books—maybe a mistake in the text or the code—we would
be grateful if you could report this to us. By doing so, you can save other readers from frustration
and help us improve subsequent versions of this book. If you find any errata, please report them
by visiting http://www.packtpub.com/submit-errata, selecting your book, clicking on
the Errata Submission Form link, and entering the details of your errata. Once your errata are
verified, your submission will be accepted and the errata will be uploaded to our website or
added to any list of existing errata under the Errata section of that title.
To view the previously submitted errata, go
to https://www.packtpub.com/books/content/support and enter the name of the book in the
search field. The required information will appear under the Errata section.
, Piracy
Piracy of copyrighted material on the Internet is an ongoing problem across all media. At Packt,
we take the protection of our copyright and licenses very seriously. If you come across any illegal
copies of our works in any form on the Internet, please provide us with the location address or
website name immediately so that we can pursue a remedy.
Please contact us at with a link to the suspected pirated material.
We appreciate your help in protecting our authors and our ability to bring you valuable content.
Questions
If you have a problem with any aspect of this book, you can contact us
at , and we will do our best to address the problem.
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 tightly integrated. But modern enterprises and IT infrastructure demand
flexibility in order to support complex applications.
The flexibility of cloud infrastructure requires networking to be dynamic and
scalable. Software-Defined Networking (SDN) and Network Function
Virtualization (NFV) play a critical role in data centers in order to deliver the flexibility and
agility demanded by cloud-based applications. By providing practical management tools and
abstractions that hide the underlying physical network's complexity, SDN allows operators to
build complex networking capabilities on demand.
OpenStack is an open source cloud platform that helps build public and private cloud at scale.
Within OpenStack, the name for the OpenStack Networking project is Neutron. The
functionality of Neutron can be classified as core and service.
This chapter aims to provide a short introduction to OpenStack Networking. We will cover the
following topics in this chapter:
While SDN is being driven by solutions both from vibrant open source community and from
networking vendors we focused on leveraging the open source software with a hands-on
approach to gaining technology and implementation insights. You will need computers or
servers running on a Intel x86 processor with VT extensions, at least 4 GB RAM and 100 GB
HDD. Each computer will require at least three network interfaces.
Considering the rapid updates to technology and implementation we strongly recommend
following the relevant links supplied for topics for further reading.
Who this book is for
The target audience for this book is system and network administrators, IT data center
managers, cloud infrastructure providers, and users of private and public clouds. It will also
be a good introduction for networking enthusiasts.
The readers are assumed to have a very basic knowledge of OpenStack, networking, and
Linux. Armed with the basic knowledge, this book will help the readers get an overview of
popular SDN technologies and how these are used in an OpenStack-based cloud
infrastructure.
Conventions
In this book, you will find a number of text styles that distinguish between different kinds of
information. Here are some examples of these styles and an explanation of their meaning.
Code words in text, database table names, folder names, filenames, file extensions,
pathnames, dummy URLs, user input, and Twitter handles are shown as follows: "The
neutron firewall-create command supports an option to pick a specific router as well."
Any command-line input or output is written as follows:
$ sudo apt-get install openvswitch
New terms and important words are shown in bold. Words that you see on the screen, for
example, in menus or dialog boxes, appear in the text like this: "In the left navigation bar, click
on the Nodes."
NOTE
Warnings or important notes appear in a box like this.
,TIP
Tips and tricks appear like this.
Reader feedback
Feedback from our readers is always welcome. Let us know what you think about this book—
what you liked or disliked. Reader feedback is important for us as it helps us develop titles
that you will really get the most out of.
To send us general feedback, simply e-mail , and mention the book's
title in the subject of your message.
If there is a topic that you have expertise in and you are interested in either writing or
contributing to a book, see our author guide at www.packtpub.com/authors.
Customer support
Now that you are the proud owner of a Packt book, we have a number of things to help you
to get the most from your purchase.
Downloading the color images of this book
We also provide you with a PDF file that has color images of the screenshots/diagrams used in
this book. The color images will help you better understand the changes in the output. You can
download this file
from https://www.packtpub.com/sites/default/files/downloads/SoftwareDefinedNetworking
withOpenStack_ColorImages.pdf.
Errata
Although we have taken every care to ensure the accuracy of our content, mistakes do happen.
If you find a mistake in one of our books—maybe a mistake in the text or the code—we would
be grateful if you could report this to us. By doing so, you can save other readers from frustration
and help us improve subsequent versions of this book. If you find any errata, please report them
by visiting http://www.packtpub.com/submit-errata, selecting your book, clicking on
the Errata Submission Form link, and entering the details of your errata. Once your errata are
verified, your submission will be accepted and the errata will be uploaded to our website or
added to any list of existing errata under the Errata section of that title.
To view the previously submitted errata, go
to https://www.packtpub.com/books/content/support and enter the name of the book in the
search field. The required information will appear under the Errata section.
, Piracy
Piracy of copyrighted material on the Internet is an ongoing problem across all media. At Packt,
we take the protection of our copyright and licenses very seriously. If you come across any illegal
copies of our works in any form on the Internet, please provide us with the location address or
website name immediately so that we can pursue a remedy.
Please contact us at with a link to the suspected pirated material.
We appreciate your help in protecting our authors and our ability to bring you valuable content.
Questions
If you have a problem with any aspect of this book, you can contact us
at , and we will do our best to address the problem.
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 tightly integrated. But modern enterprises and IT infrastructure demand
flexibility in order to support complex applications.
The flexibility of cloud infrastructure requires networking to be dynamic and
scalable. Software-Defined Networking (SDN) and Network Function
Virtualization (NFV) play a critical role in data centers in order to deliver the flexibility and
agility demanded by cloud-based applications. By providing practical management tools and
abstractions that hide the underlying physical network's complexity, SDN allows operators to
build complex networking capabilities on demand.
OpenStack is an open source cloud platform that helps build public and private cloud at scale.
Within OpenStack, the name for the OpenStack Networking project is Neutron. The
functionality of Neutron can be classified as core and service.
This chapter aims to provide a short introduction to OpenStack Networking. We will cover the
following topics in this chapter:
