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Software–Defined Networking Meron Aymiro What is Software-Defined Networking? Software-Defined Networking (SDN) has the potential of to transcend the limitations of the current networking infrastructures. “The basic premise behind SDN is that by separating control of network functions from hardware devices, administrators acquire more power to route and direct traffic in response to changing requirements.” 1 Control Data Plane plane Issues with Traditional IP Networking They are complex and hard to manage. The control plane and the data plane are joined together in a network device. During configuration - Each individual network device must be configured separately using Vendor-specific commands Network environments have to endure the dynamics of faults and adapt to load changes Slow progressions of improvement. Why use SDN? The separation of the control plane from data plane will give ways Directly programmable Simplification of network devices Inexpensive Flexibility Scalability Optimization of resources OpenFlow OpenFlow is the first standard communications interface defined between the control and forwarding layers of an SDN architecture This communication protocol that gives access to the forwarding plane of a network switch or router over the network. OpenFlow enabled network controllers to determine the path of network packets across a network of switches. Currently most vendor of commercial switches now include support of the OpenFlow application programming interface (API) https://www.opennetworking.org/sdn-resources/openflow Layers of SDN SDN is the future of networking. SDN was projected to grow into a $3.7 billion industry in 2016 SDN is already servicing big companies like Google, Facebook, Yahoo, Verizon Since vedor- locking will not be an issue with SDN, it will invite more research and innovation References 1. http://www.blackstratus.com/traditional-software-defined-networking/ 2. arXiv:1406.0440 [cs.NI] 3. https://en.wikipedia.org/wiki/OpenFlow 4. https://www.opennetworking.org/sdn-resources/openflow 5. http://www.software-defined.net/networking.php Thank You. Questions?