Hi Jeremy, I've seen the page and tried the values but to no help.
Here goes tcpdump of one failed TCP connection: 15:06:20.231421 IP 10.0.18.87.9160 > 10.0.18.87.39396: Flags [P.], seq 137891735:137904068, ack 708, win 282, options [nop,nop,TS val 4119981636 ecr 4119981636], length 12333 15:06:20.231434 IP 10.0.18.87.39396 > 10.0.18.87.9160: Flags [.], ack 137891735, win 24576, options [nop,nop,TS val 4119981636 ecr 4119981636], length 0 15:06:20.231459 IP 10.0.18.87.39396 > 10.0.18.87.9160: Flags [.], ack 137904068, win 24576, options [nop,nop,TS val 4119981636 ecr 4119981636], length 0 15:06:20.271128 IP 10.0.18.87.39396 > 10.0.18.87.9160: Flags [P.], seq 708:712, ack 137904068, win 24576, options [nop,nop,TS val 4119981646 ecr 4119981636], length 4 15:06:20.271156 IP 10.0.18.87.39396 > 10.0.18.87.9160: Flags [P.], seq 712:901, ack 137904068, win 24576, options [nop,nop,TS val 4119981646 ecr 4119981636], length 189 15:06:20.271217 IP 10.0.18.87.9160 > 10.0.18.87.39396: Flags [.], ack 901, win 290, options [nop,nop,TS val 4119981646 ecr 4119981646], length 0 15:06:21.450164 IP 10.0.18.87.39396 > 10.0.18.87.9160: Flags [F.], seq 901, ack 137904068, win 24576, options [nop,nop,TS val 4119981941 ecr 4119981646], length 0 15:06:21.490323 IP 10.0.18.87.9160 > 10.0.18.87.39396: Flags [.], ack 902, win 290, options [nop,nop,TS val 4119981951 ecr 4119981941], length 0 15:06:38.487063 IP 10.0.18.87.9160 > 10.0.18.87.39396: Flags [P.], seq 137904068:137904072, ack 902, win 290, options [nop,nop,TS val 4119986200 ecr 4119981941], length 4 15:06:38.487079 IP 10.0.18.87.39396 > 10.0.18.87.9160: Flags [R], seq 1086151357, win 0, length 0 port 39396 is client, port 9160 is cassandra server. interresting are the last four lines. There if FIN from client to cassandra, then cassandra reply with ACK, then ACK+PSH and then gets RST and fails. It looks like cassandra writes to closed connection. Regards, P.
