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Software-defined networking (SDN)
The main idea is simply like moving the network Devices (switches - routers -Multilayer switches) from work-group environment to domain environment to have a central point allow controlling and administrating by software and programming language using openFlow protocol for communication process which will cause reducing the IT (network administrators) coast , increasing flexibility and efficiency.
Cisco Application Centric Infrastructure (ACI) is first product from cisco for SDN and sure cisco is updating routers and switches to support SDN (for example Cisco Nexus9000 Series Switches )
