Basic open Flow: How Does it Work? Controller manages the traffic network flows) by manipulating the flow table at switche Instructions are stored in flow tables Network Applications When packet arrives at switch match the header fields with flow entries in a flow table Intrusion MAC Routing Load Detection If any entry matches, performs indicated actions Learning Algorithms Balancer and update the counters System If Does not match, Switch asks controller by Control Plane: SDN controller sending a message with the packet header. Flow Table(has 3 sections Communicate via secure channel RULE ACTION STATS Flow table Packet counters 1 Forward packet to portis) 2. Encapsulate and forward to controller 3. Drop packet Data plane 4. Send to normal processing pipel 1D pdstBasic OpenFlow: How Does it Work? • Controller manages the traffic (network flows) by manipulating the flow table at switches. • Instructions are stored in flow tables. • When packet arrives at switch, match the header fields with flow entries in a flow table. • If any entry matches, performs indicated actions and update the counters. • If Does not match, Switch asks controller by sending a message with the packet header. Data Plane Control Plane : Flow Table (has 3 sections) Flow table Communicate via secure Channel Match the packet header