  VirtuWind proposes the application of Software Defined Networking (SDN) and
Network Functions Virtualization (NFV) in critical infrastructure networks. We
aim at introducing network programmability, reconfigurability and multi-tenant
capability both inside isolated and inter-connected industrial networks.
Henceforth, we present the design of the VirtuWind architecture that addresses
the requirements of industrial communications: granular Quality of Service
(QoS) guarantees, system modularity and secure and isolated per-tenant network
access. We present the functional components of our architecture and provide an
overview of the appropriate realization mechanisms. Finally, we map two
exemplary industrial system use-cases to the designed architecture to showcase
its applicability in an exemplary industrial wind park network.
