Software-defined Networking (SDN) promises to improve the elasticity and agility of networks, enabling service providers to rapidly respond to customer demands for new services. These promises need to be put to the test. In addition, the challenges posed by SDN networks on maintaining reliability, improved scalability and security need to be analyzed and put to rest. The methodologies defined in this journal take on these challenges to verify the agility, scalability, reliability and responsiveness of SDN using Spirent's test offerings and each test case has a unique Test Case ID that is universally unique across the ecosystem.