Hi All,
I hope I am doing the right thing asking this here. I'm new to all this.
Below is an extract from a pcapng file. I can't attach the file because I don't have enough points. I have googled and googled but I am not a network guy and I am having trouble understanding what wireshark is trying to tell me.
This sequence below repeats over and over. It should just be a big message from .200 to .182 with a 1 byte response, and then a short message from .182 to .200 with a 1 byte response. Is every message in each direction really getting re-transmitted and are the TCP-Dup ACK and TCP-Keep Alive's a problem?
Sorry for the formatting. Happy to re-post in another way if it helps.
Thanks in advance, Brad.
1 14:58:25.934858 10.10.10.200 10.10.10.182 TCP 53740 → scp-config(10001) [PSH, ACK] Seq=1 Ack=1 Win=63198 Len=1005 1059
2 14:58:25.934860 10.10.10.200 10.10.10.182 TCP [TCP Retransmission] 53740 → scp-config(10001) [PSH, ACK] Seq=1 Ack=1 Win=63198 Len=1005 1059
3 14:58:25.968185 10.10.10.182 10.10.10.200 TCP scp-config(10001) → 53740 [ACK] Seq=1 Ack=1006 Win=2048 Len=0 60
4 14:58:25.968186 10.10.10.182 10.10.10.200 TCP [TCP Dup ACK 3#1] scp-config(10001) → 53740 [ACK] Seq=1 Ack=1006 Win=2048 Len=0 60
5 14:58:26.024675 10.10.10.182 10.10.10.200 TCP scp-config(10001) → 53740 [PSH, ACK] Seq=1 Ack=1006 Win=2048 Len=1 60
6 14:58:26.024676 10.10.10.182 10.10.10.200 TCP [TCP Keep-Alive] scp-config(10001) → 53740 [PSH, ACK] Seq=1 Ack=1006 Win=2048 Len=1 60
7 14:58:26.074496 10.10.10.200 10.10.10.182 TCP 53740 → scp-config(10001) [ACK] Seq=1006 Ack=2 Win=63197 Len=0 60
8 14:58:26.074497 10.10.10.200 10.10.10.182 TCP [TCP Keep-Alive ACK] 53740 → scp-config(10001) [ACK] Seq=1006 Ack=2 Win=63197 Len=0 60
9 14:58:26.120072 10.10.10.182 10.10.10.200 FMTP Operational message 89
10 14:58:26.120074 10.10.10.182 10.10.10.200 TCP [TCP Retransmission] scp-config(10001) → 53740 [PSH, ACK] Seq=2 Ack=1006 Win=2048 Len=35 89
11 14:58:26.120075 10.10.10.200 10.10.10.182 TCP 53740 → scp-config(10001) [PSH, ACK] Seq=1006 Ack=37 Win=63162 Len=1 60
12 14:58:26.120075 10.10.10.200 10.10.10.182 TCP [TCP Keep-Alive] 53740 → scp-config(10001) [PSH, ACK] Seq=1006 Ack=37 Win=63162 Len=1 60
