Regarding the analytics there is huge difference between “standard switch” and Extreme Application Telemetry capable switch. With flow data = netflow you will get L4 visibility. With flow data = sflow you will get Sampled visibility. L7 will come based on if you are lucky with Sampling. With Extreme switches (telemetry capable) the switch will inform the analytics engine about each and every tcp flow and due to deep packet inpaection also important traffic like HTTPs hello, HTTP get, and many others. The result is that customer will have L7 visibility without any additional “sensor”. There is also option to deploy sensor(s) to the 3rd party network and the sensor will provide you with L7 visibility.. Regarding control there are benefits of using Extreme switches also (policy with central management and deployment). The deployment of Control on Extreme is easier and quicker. But Control can be deployed on HP (Aruba/Comware/H3C) without issues... Regards! Z.