Ixia Black Book: SDN/OpenFlow

Introduction – Software Defined Networking
The SDN applications run on top of the OpenFlow controller using a well-defined API,
known as the north-bound API. Each controller vendor provides their own set of APIs.
Applications can range from layer 2 or layer 3 learning networks to static provisioned
networks and can be as simple or complicated as the requirements demand. New
applications are being developed every day to address challenges in the data center,
service provider WAN, enterprise and other networks.
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