Reactive vs. Proactive (pre-populated) Both models are possible with OpenFlow Reactive First packet of flow triggers controller to insert flow entries
{"Image DocumentName": "Software Defined Networking (COMS )", "Image ImageDescription": "Reactive vs. Proactive (pre-populated) Both models are possible with OpenFlow. Reactive. First packet of flow triggers controller to insert flow entries. Efficient use of flow table. Every flow incurs small additional flow setup time. If control connection lost, switch has limited utility. Proactive. Controller pre-populates flow table in switch. Zero additional flow setup time. Loss of control connection does not disrupt traffic. Essentially requires aggregated (wildcard) rules. 9/15/14. Software Defined Networking (COMS )", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}