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Software-Defined Networking (SDN) with OpenStack

By : Sriram Subramanian, Voruganti

2.3 (3)

Software-Defined Networking (SDN) with OpenStack

2.3 (3)

By: Sriram Subramanian, Voruganti

Overview of this book

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.

Preface

Preface

What this book covers

What you need for this book

Who this book is for

Conventions

Reader feedback

Customer support

Free Chapter

1. OpenStack Networking in a Nutshell

1. OpenStack Networking in a Nutshell

Virtual and physical networking

Layer 2 (L2) capabilities in OpenStack

Layer 3 (L3) capabilities in OpenStack

Securing network traffic in OpenStack

Advanced networking services

OpenStack and SDN context

Summary

2. Introduction to Software-Defined Networking

2. Introduction to Software-Defined Networking

Components of traditional networks

Challenges faced by traditional networks

SDN reference architecture

SDN and OpenStack

Summary

3. SDN Protocols

3. SDN Protocols

Getting familiar with SDN protocols

Configuration management protocols

Understanding OpenFlow

Summary

4. SDN Networking with Open vSwitch

4. SDN Networking with Open vSwitch

OVS Networking with Linux Network namespace

OVS networking with SDN controller

OVS and Mininet

OVS connected to virtual machines

OpenStack Neutron

Summary

5. Getting Started with OpenDaylight

5. Getting Started with OpenDaylight

Introduction to OpenDaylight

Architecture of OpenDaylight

Installing ODL

Using ODL to manage Open vSwitch

Installing and configuring OVS

Managing OVS Using OpenDaylight

ODL and OpenStack

Summary

6. Using OpenDaylight with OpenStack

6. Using OpenDaylight with OpenStack

Integrating OpenDaylight with OpenStack

Configuring OpenStack Neutron for ODL

Introduction to Virtual Tenant Network (VTN)

VTN and OpenStack

Summary

7. Getting Started with OpenContrail

7. Getting Started with OpenContrail

Introduction to OpenContrail

OpenContrail architecture

Putting it all together

Installing OpenContrail

OpenContrail and OpenStack

Summary

8. OpenContrail Networking with OpenStack

8. OpenContrail Networking with OpenStack

OpenContrail integration with OpenStack

Virtual network management in OpenContrail

Flow of data packets in OpenContrail

Service chaining using OpenContrail

Summary

9. Open Network Operating System (ONOS)

9. Open Network Operating System (ONOS)

Introduction to ONOS

Architecture of ONOS

Using ONOS to manage Open vSwitch

Intent framework

Distributed ONOS

Central Office Re-architected as Datacenter

Extensible Cloud Operating System

Summary

10. OVN and Open vSwitch Enhancements

10. OVN and Open vSwitch Enhancements

Open vSwitch components in network node

Open vSwitch components in compute host

OVN - Native Virtual Networking Open vSwitch

OVN and OpenStack

Neutron Dragonflow

Data Path Development Kit (DPDK)

Summary

OVS networking with SDN controller

Now let us bring the OpenFlow controller to the configuration to manage the OVS. We will use a controller implemented on Ryu (pronounced ree-yooh), a component-based software-defined networking framework. Ryu provides software components with well-defined northbound Python APIs and it supports OpenFlow protocol towards southbound. Refer to http://osrg.github.io/ryu/.

OVS networking with SDN controller

Figure 2: Ryu SDN framework

We will continue the example from the previous section, where we had two namespaces and two hosts. Let us first install the ryu SDN controller framework:

Install directly using the pip command.
```
$ sudo pip install ryu
```

You can also install ryu from the source code.

$ git clone git://github.com/osrg/ryu.git 
$ cd ryu; python ./setup.py install

In this example, we will add Open Flow controller and verify OVS Open Flow table updates. Ryu is running locally, hence we set the OVS controller to the local IP address.

The first step is to set the controller to the OVS...

CONTINUE READING

83

Tech Concepts

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Programming languages

73

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