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SDN implementations and protocols

SDN implementations and protocols

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This chapter begins by explaining the main SDN concepts with the focus on a SDN controller. It presents the most important aspects to consider when we desire to go from traditional network to a SDN networks. We present an in-depth analysis of the most commonly used and modern SDN controllers and analyse the main features, capabilities and requirements of one of the presented controllers. OpenFlow is the standard leading in the market allowing the management of the forwarding plane devices such as routers or switches. While there are other standards with the same aim, OpenFlow has secured a position in the market and has been expanded rapidly. Therefore, an analysis is presented on a different OpenFlow compatible device for the implementation of an SDN network. This study encompasses both software and hardware solutions along with the scope of implementation or use of these devices. This chapter ends up presenting a description of OpenFlow protocol alternatives, a more detailed description of OpenFlow and its components and other wellknown southbound protocols involved for the management and configuration of the devices.

Chapter Contents:

  • 2.1 How SDN is implemented
  • 2.1.1 Implementation aspects
  • 2.1.2 Existing SDN controllers
  • 2.2 Current SDN implementation using OpenDaylight
  • 2.2.1 OpenDaylight
  • 2.2.1.1 Architecture
  • 2.2.1.2 Modules
  • 2.3 Overview of OpenFlow devices
  • 2.3.1 Software switches
  • 2.3.2 Hardware switches
  • 2.4 SDN protocols
  • 2.4.1 ForCES
  • 2.4.2 OpenFlow
  • 2.4.2.1 OpenFlow protocol
  • 2.4.2.2 OpenFlow switch
  • 2.4.2.3 Flow table
  • 2.4.2.4 Group table
  • 2.4.2.5 Meter table
  • 2.4.2.6 Secure channel
  • 2.4.3 Open vSwitch database management (OVSDB)
  • 2.4.4 OpenFlow configuration and management protocol (OF-CONFIG)
  • 2.4.5 Network configuration protocol (NETCONF)
  • 2.5 Open issues and challenges
  • 2.6 Summary and Conclusions
  • References

Inspec keywords: software defined networking; protocols

Other keywords: OpenFlow protocol; SDN networks; SDN controller; southbound protocols; forwarding plane devices; OpenFlow compatible device

Subjects: Protocols; Protocols; Computer communications; Computer networks and techniques

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