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Software-Defined Networking (SDN) with OpenStack

You're reading from   Software-Defined Networking (SDN) with OpenStack Leverage the best SDN technologies for your OpenStack-based cloud infrastructure

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Product type Paperback
Published in Oct 2016
Publisher
ISBN-13 9781786465993
Length 216 pages
Edition 1st Edition
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Authors (2):
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Sriram Subramanian Sriram Subramanian
Author Profile Icon Sriram Subramanian
Sriram Subramanian
Sreenivas Voruganti Sreenivas Voruganti
Author Profile Icon Sreenivas Voruganti
Sreenivas Voruganti
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Toc

Table of Contents (11) Chapters Close

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

Intent framework


Let's now install intent to communicate directly between the hosts. The ONOS intent framework allows operators to define policies using a high-level abstraction or language. It is the responsibility of the ONOS controller to translate those policies into a network configuration. This helps create networking constructs that are vendor and device-agnostic, while at the same time, it simplifies day-to-day operations. We will see that the semantics for configuration are based on intent rather than on the mechanism of the desired configuration:

  1. Uninstall the switch application and add host-intent in ONOS, as shown in the following screenshot:

  2. Check the ONOS GUI to confirm intents are installed:

  3. Check the OVS table to verify programming of the flow tables:

As we can see from the preceding example, ONOS takes the intent configuration and programs the network nodes appropriately to translate the intent to the actual configuration. This abstraction enables the network administrator...

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