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Software-Defined Networking (SDN) with OpenStack
Software-Defined Networking (SDN) with OpenStack

Software-Defined Networking (SDN) with OpenStack: Leverage the best SDN technologies for your OpenStack-based cloud infrastructure

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Profile Icon Sriram Subramanian Profile Icon Voruganti
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$19.99 per month
Full star icon Full star icon Half star icon Empty star icon Empty star icon 2.3 (3 Ratings)
Paperback Oct 2016 216 pages 1st Edition
eBook
$35.99 $39.99
Paperback
$39.19 $48.99
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Free Trial
Renews at $19.99p/m
Arrow left icon
Profile Icon Sriram Subramanian Profile Icon Voruganti
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$19.99 per month
Full star icon Full star icon Half star icon Empty star icon Empty star icon 2.3 (3 Ratings)
Paperback Oct 2016 216 pages 1st Edition
eBook
$35.99 $39.99
Paperback
$39.19 $48.99
Subscription
Free Trial
Renews at $19.99p/m
eBook
$35.99 $39.99
Paperback
$39.19 $48.99
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Renews at $19.99p/m

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Software-Defined Networking (SDN) with OpenStack

Chapter 2.  Introduction to Software-Defined Networking

As mentioned in the previous chapter, businesses and enterprises are moving towards newer architectures for building and deploying applications. With technologies such as virtualization and containerization, it is possible to rapidly deploy complex and highly scalable applications within an enterprise or on a public cloud or both.

Common IT applications require compute, storage, and networking resources. Traditionally, the server and storage infrastructure was installed and configured by system administrators and then separately, network administrators used to connect the servers and configure the network. This silo-based approach does not scale for today's on-demand and highly automated application deployment needs. Moreover, the traditional network architecture was designed for more static application environment, whereas flexibility is the need of the hour now.

This is where SDN comes into the picture. SDN makes the...

Components of traditional networks

Let us start our deep dive into SDN by looking at the components of a network device. Networking functionality can be broadly classified into three planes. These are as follows:

  • Data plane: The act of moving bits that constitute the packet from an incoming port to an outgoing port is the responsibility of the data plane. This is also known as the forwarding plane. For example, in Ethernet switches, packets coming in from one port are forwarded out via one or more of the remaining ports.
  • Control plane: Using the previous example, to forward the packet to the correct outgoing port, the data plane may need additional information. In the case of Ethernet switches, the outgoing port is identified using the destination MAC address learnt by the switch. This act of learning and building awareness about the network is the responsibility of the control plane. The control plane learns and gathers information about the network using various protocols. In a ...

Challenges faced by traditional networks

As seen earlier, traditional networks are built and operated based on the three networking planes. The networks were static in nature and were manually configured based on service requests. Let's now see what challenges are faced in the traditional architecture of networks.

Control plane challenges

The most obvious problem faced in control plane is that of interoperability. While standards exist for most protocols, each vendor's support for the standards may vary. And even for the same vendor the protocol behavior could differ between releases. This will lead to incompatibility and limit the intelligence that can be built using control plane. For cost optimization as well as flexibility, cloud operators do not want single-vendor lock in. Therefore, it is very important that the control plane is feature rich and robust for the entire cloud.

Another problem faced by control plane is that of scale. We have seen that control plane entities (protocols...

SDN reference architecture

We have seen the traditional network architecture and the challenges faced by them. Let us now look at a typical SDN architecture and how it addresses these challenges.

The following diagram depicts a simplified SDN architecture where the control plane is centralized into a controller. It also considers OpenFlow as the protocol between the centralized control plane and the distributed data plane. While OpenFlow is the most popular SDN protocol between control and data plane, SDN platforms such as OpenContrail use XMPP and BGP as control plane protocols:

SDN reference architecture

Figure 2: Simplified SDN-based network architecture.

Control plane improvements with SDN

In traditional networks, control plane was distributed and running on each networking device. The SDN model is to centralize the control plane. This centralized control plane is basically a software entity commonly referred to as the SDN controller. By centralizing the control plane, the interoperability problem is addressed...

SDN and OpenStack

In order to understand how SDN fits into the OpenStack ecosystem, let's revisit some of the learnings from the earlier sections of this chapter:

  • Network abstractions are required in order to provide a flexible environment for cloud-based applications
  • Networking must support programmatic APIs in order to dynamically provision the resources needed for applications and to integrate effectively with compute and storage resources
  • Centralized management of SDN is critical to support multi-vendor based cloud infrastructure

OpenStack and Network abstractions

As seen in the previous chapter, OpenStack supports simple abstractions such as network, subnet, router, firewall, and so on. These abstractions help cloud users to define applications and the required infrastructure as software entities. The advantage of this approach is that underlying physical infrastructure is unaware and independent of the applications running on it. Sophisticated orchestration entities and SDN controllers...

Components of traditional networks


Let us start our deep dive into SDN by looking at the components of a network device. Networking functionality can be broadly classified into three planes. These are as follows:

  • Data plane: The act of moving bits that constitute the packet from an incoming port to an outgoing port is the responsibility of the data plane. This is also known as the forwarding plane. For example, in Ethernet switches, packets coming in from one port are forwarded out via one or more of the remaining ports.

  • Control plane: Using the previous example, to forward the packet to the correct outgoing port, the data plane may need additional information. In the case of Ethernet switches, the outgoing port is identified using the destination MAC address learnt by the switch. This act of learning and building awareness about the network is the responsibility of the control plane. The control plane learns and gathers information about the network using various protocols. In a switch...

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Key benefits

  • *Learn how to leverage critical SDN technologies for OpenStack Networking APIs via plugins and drivers
  • *Champion the skills of achieving complete SDN with OpenStack with specific use cases and capabilities only covered in this title
  • *Discover exactly how you could implement cost-effective OpenStack SDN integration for your organization

Description

Networking is one the pillars of OpenStack and OpenStack Networking are designed to support programmability and Software-Defined Networks. OpenStack Networking has been evolving from simple APIs and functionality in Quantum to more complex capabilities in Neutron. Armed with the basic knowledge, this book will help the readers to explore popular SDN technologies, namely, OpenDaylight (ODL), OpenContrail, Open Network Operating System (ONOS) and Open Virtual Network (OVN). The first couple of chapters will provide an overview of OpenStack Networking and SDN in general. Thereafter a set of chapters are devoted to OpenDaylight (ODL), OpenContrail and their integration with OpenStack Networking. The book then introduces you to Open Network Operating System (ONOS) which is fast becoming a carrier grade SDN platform. We will conclude the book with overview of upcoming SDN projects within OpenStack namely OVN and Dragonflow. By the end of the book, the readers will be familiar with SDN technologies and know how they can be leveraged in an OpenStack based cloud.

Who is this book for?

Administrators, and cloud operators who would like to implement Software Defined Networking on OpenStack clouds. Some prior experience of network infrastructure and networking concepts is assumed.

What you will learn

  • *Understand how OVS is used for Overlay networks
  • *Get familiar with SDN Controllers with Architectural details and functionalities
  • *Create core ODL services and understand how OpenDaylight integrates with OpenStack to provide SDN capabilities
  • *Understand OpenContrail architecture and how it supports key SDN functionality such as Service Function Chaining (SFC) along with OpenStack
  • *Explore Open Network Operating System (ONOS) – a carrier grade SDN platform embraced by the biggest telecom service providers
  • *Learn about upcoming SDN technologies in OpenStack such as Dragonflow and OVN

Product Details

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Publication date, Length, Edition, Language, ISBN-13
Publication date : Oct 28, 2016
Length: 216 pages
Edition : 1st
Language : English
ISBN-13 : 9781786465993
Vendor :
OpenStack
Tools :

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Product Details

Publication date : Oct 28, 2016
Length: 216 pages
Edition : 1st
Language : English
ISBN-13 : 9781786465993
Vendor :
OpenStack
Tools :

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Table of Contents

10 Chapters
1. OpenStack Networking in a Nutshell Chevron down icon Chevron up icon
2. Introduction to Software-Defined Networking Chevron down icon Chevron up icon
3. SDN Protocols Chevron down icon Chevron up icon
4. SDN Networking with Open vSwitch Chevron down icon Chevron up icon
5. Getting Started with OpenDaylight Chevron down icon Chevron up icon
6. Using OpenDaylight with OpenStack Chevron down icon Chevron up icon
7. Getting Started with OpenContrail Chevron down icon Chevron up icon
8. OpenContrail Networking with OpenStack Chevron down icon Chevron up icon
9. Open Network Operating System (ONOS) Chevron down icon Chevron up icon
10. OVN and Open vSwitch Enhancements Chevron down icon Chevron up icon

Customer reviews

Rating distribution
Full star icon Full star icon Half star icon Empty star icon Empty star icon 2.3
(3 Ratings)
5 star 0%
4 star 0%
3 star 33.3%
2 star 66.7%
1 star 0%
Network Engineer Jan 30, 2017
Full star icon Full star icon Full star icon Empty star icon Empty star icon 3
The content is lacking (too skimpy). Leaves you wanting more context and explanations, more detail, more illustrations, more real-world examples. Moreover, as usual with writers whose first language is NOT English, it is written poorly and the grammar and punctuation are lacking. It actually becomes confusing sometimes. I don't know what possesses people, who don't have good command of the English language, to write something as haphazardly as this and then sell it on the market. And it wasn't cheap either! Unfortunately, this problem is VERY prevalent in our industry and it is very frustrating. Smart guys who can't speak or write English too well are put in a position where they have to communicate to large audiences.
Amazon Verified review Amazon
Peace is life breath Feb 03, 2018
Full star icon Full star icon Empty star icon Empty star icon Empty star icon 2
In today's compitive n busy world we would need one book which gives complete info. The important scope of the subject matter is just mentioned in chapter 5,6 .. there are no elaborate commands mentioned as the subject of the book . The content is very brief n available on internet .. expected some deep learning however it's very superficial..
Amazon Verified review Amazon
Amazon Customer May 15, 2017
Full star icon Full star icon Empty star icon Empty star icon Empty star icon 2
The book just float in surface and i wanted it to be more exhaustive on each topic it touches upon.
Amazon Verified review Amazon
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