Dear, Thank you so much for your co-operation. I have received the following error message before the connection between RYU controller and SDN switch. The error message is captured at the SDN Switch.
Oct 1 13:47:45 admin3-desktop kernel: [ 1202.598756] RTUSBBulkOutDataPacket(): ====> pTxInfo->QueueSel(0)!= FIFO_EDCA!!!! Oct 1 13:47:45 admin3-desktop kernel: [ 1202.598771] CWPos=36580, NBPos=34944, ENBPos=34944, bCopy=0! Oct 1 13:47:45 admin3-desktop kernel: [ 1202.598784] WARNING-Zero-3:0000000000000000,CWPos=36580, CWRPos=36580, bCW=0, NBPos=34944, TBPos=69280, TBSize=34336 Oct 1 13:47:45 admin3-desktop kernel: [ 1202.598791] CWPos=0000000000000000 Oct 1 13:47:47 admin3-desktop ovs-vswitchd: ovs|00119|rconn|ERR|br0<->tcp: 10.0.0.8:6633: no response to inactivity probe after 5 seconds, disconnecting\ Therefore, I suspect this can be the problem of hardware what I applied at the SDN switch. Best Regards, Soe Ye Htet
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