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On-demand network virtualization and provisioning services in SDN-driven cloud platforms

On-demand network virtualization and provisioning services in SDN-driven cloud platforms

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In this chapter, we present a brief survey on the latest advancements in Network-as-a-Service (NaaS) platforms based on the software-defined networking (SDN) model. This survey sheds light on the main advantages of network virtualization and programmability in cloud computing environments that led to the provisioning of dynamic, flexible, and secure virtual network services. In spite of the great benefits provided by network virtualization in the cloud, further research is still needed to tackle a plethora of technical challenges in the fields of dynamic NaaS configuration and operation. This chapter paves the way for a better understanding of the problems hindering the NaaS adoption in current cloud architectures and represents a call for action on the need for having a dynamic NaaS configuration service to tackle these problems. Accordingly, the chapter proposes the design and implementation of a centralized cloud service for creating virtual networks (VNets) in SDN-based cloud architectures.

Chapter Contents:

  • Abstract
  • Keywords
  • 13.1 Introduction
  • 13.2 Network virtualization: basic concepts and architecture
  • 13.3 Software-defined networking architecture
  • 13.4 NaaS models in software-defined networks
  • 13.5 NCaaS: network configuration as a service
  • 13.5.1 NaaS providers offers
  • 13.5.2 Tenants preferences and constraints
  • 13.5.3 NCaaS partitioning algorithm
  • 13.5.3.1 Cost optimization formulation and objective function
  • 13.5.3.2 Network partitions creation algorithm
  • 13.5.4 Topology generation
  • 13.5.4.1 Topology creation algorithm
  • 13.5.5 Partitions connection algorithm
  • 13.5.6 NCaaS implementation
  • 13.6 Conclusion and future extensions
  • References

Inspec keywords: virtualisation; software defined networking; cloud computing

Other keywords: SDN-driven cloud platforms; VNets; network-as-a-service; cloud computing environments; dynamic NaaS configuration service; on-demand network virtualization; NaaS platforms; on-demand network provisioning services; software-defined networking model; virtual network service provisioning; centralized cloud service

Subjects: Computer communications; Computer networks and techniques; Internet software

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