Do I understand correctly that the packet that you see has the RST bit set and also the ACK bit set?
The ACK bit indicates a response packet. The RST is an abnormal termination of a TCP session (the FIN bit represents a normal termination). It sounds like devices on your end are initiating sessions, find something that they do not like and terminating. It sounds like what you are seeing is the acknowledgement from the server to your reset of the connection. Perhaps you can tell us a bit more about what if anything came in the trace before the RST, ACK?
These messages would seem to indicate that there is a lot of packet loss and perhaps lots of delay in delivering packets that cause the sending station to retransmit (this is a normal part of TCP and is not a problem when done in small amounts). It looks like the amount of retransmitted packets contributes especially to the Dup ACK, and Out-Of-Order error messages.
Can you categorize these in any way? Are they associated mostly with particular destinations? Are they associated with particular source stations? Are they worse in some parts of your network than in others? If we can understand this traffic a bit better we might be able to find ways to address the issue.
Hi everyone, I would like to thank you in advance for any help you can provide a newcomer like myself!
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