I am pretty new to the networking side of things so bear with me. I am trying to figure out why it seems like our connections from the local machines on our network our timing out with our server. I decided to download wireshark to monitor the communication and I seem to have found when the errors are occurring. It looks like I am getting duplicate ACK and retransmissions. Is there any way to figure out why this is occurring. We have about 50 local machines and a majority of them are routinely getting these dropouts. I have tried to do some research on what could be causing this but most questions I see about this are people running in to the issue with websites. This is all internal to our office. Here is a screenshot from wireshark asked 18 Apr '14, 08:00  timbo126 edited 29 Mar '15, 19:02  Guy Harris ♦♦ |
2 Answers:
I have a similar issue. I performed a single file transfer over a point to point Ethernet connection and see this many times in the packet capture file: https://www.cloudshark.org/captures/57b5da1ba42a answered 18 Apr '14, 11:27  knightmese |
DUP ACKs are common in communication, it means server has not received packet sent by client. Please check transit network. There is nothing you can find out from client. answered 18 Apr '14, 12:06  hardshah4 |
