Dear Ryu Team, This is Master of Engineering student from Chulalongkorn University, Thailand. My research in brief is as follows:
1) I installed Ryu in one lab and placed in my lab. Ryu controller got one public ip. 2) I have 6 ovs-installed Raspberry Pi's (wireless mesh nodes) and 2 IntelNUC which are wireless gateways installed outside of the university. 3) For the control plane, I use out of band mode. So, each pi and intelNUC have two interfaces. For one interface, I use 4G modem and another interface, I use the wireless antenna. 4) Control plane is established by using the 4G link. Data plane is established by using the wireless links. Since, the interface used for esablishing control connectivity to Ryu controller is the interface using 4G modem, Ryu controller can know only the interface status of 4G modem interface by using echo reply/request. *** To check the connectivity between wireless mesh nodes ( data plane connectivity), I now plan to ping between every two mesh nodes in every time interval and send this result to Ryu controller. Then, Ryu controller knows the status of data plane and if one link is failed, then, Ryu controller assigns the flow rules to the respective wireless mesh nodes to reroute using another available links. *** What I would to like to know is that 1) How can the wireless mesh nodes send the pinged results to the Ryu controller? ( Can Ryu controller accept the dataplane data? if so, by which message, Ryu controller will accept that dataplane data ?) 2) Can Ryu controller detect the link status between wireless mesh nodes ( which are from the data plane) not by using manual pings between two wireless nodes? Best Regards, Phoo Phoo Thet Lyar Tun Chulalongkorn University,Thailand
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