> While we're at it, I have one more question. After the fix described > above the application is running much much better and the connection > looks a lot more stable/reliable. But I do still see some rare > occurrences of TCP retransmissions and duplicated ACKs in Wireshark > (like maybe once/twice in an hour or something like that). The hardware > side of the connection in my case is pretty simple - my PC is connected > with a cable to a router, which is connected with a cable to a switch, > which is then connected with a cable to the devices (there are four of > them). I have very little experience with debugging network > connections, so I would like to ask whether this (low) amount of > retransmissions and duplicated ACKs is something normal/expected or > rather something I should worry about, as any number higher than zero > is a symptom of some problem? >
Such a rare occurrence is quite normal, but if you have a port mirroring on the switch, then there will be many such duplicates. -- pozdrawiam tomek
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