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I'm getting a lot of "ACKed unseen segment" packets in my capture of traffic between an IP camera (AXIS M1011) and the display device which is a Furuno TZT14 marine chart-plotter. I'm using a SharkTap between the 2 devices, there is nothing else on the network, and to reduce chatter that might be causing packets to be dropped, I added capture filters of "host 172.31.200.3" (the IP cam) and "not broadcast and not multicast". My The capture is TZT14M1011Filter.pcapng. A specific example is packet 11. The camera says "401, not authorized" but which packet caused that? Also, at packets 28 and 29, the chartplotter issues DESCRIBE and OPTIONS requests, but at 30, the camera says "Option not supported". From which request? When I entered this, I didn't realize I wouldn't be able to upload my capture file because I don't have 60 points. request? ---rick

I'm getting a lot of "ACKed unseen segment" packets in my capture of traffic between an IP camera (AXIS M1011) and the display device which is a Furuno TZT14 marine chart-plotter. I'm using a SharkTap between the 2 devices, there is nothing else on the network, and to reduce chatter that might be causing packets to be dropped, I added capture filters of "host 172.31.200.3" 1872.31.200.3" (the IP cam) and "not broadcast and not multicast". The capture is TZT14M1011Filter.pcapng. A specific example is packet 11. The camera says "401, not authorized" but which packet caused that? Also, at packets 28 and 29, the chartplotter issues DESCRIBE and OPTIONS requests, but at 30, the camera says "Option not supported". From which request? ---rick