OK I had another "Network Flood" today. I started Wireshark and it showed no packets at my PC Interface. I could see the lights blinking on my Ethernet Switch between the H21 and the HR21 so whatever is happening doesn't appear to be Broadcast Packets. The problem went away as soon as I unplugged the H21-100 receiver. I will look around and see if I can find an old Ethernet Hub. I will capture the Non Broadcast traffic from the H21 the next time it happens..
Sorry to get back on this thread so late...
When you say no packets at your PC interface, do you mean none whatsoever, or just none relating to broadcast stuff?
You should have captured at least a few packets, of something your pc was doing at the time, I would think. Are you sure you selected the correct interface to capture? My PC, for example, has 6 interfaces to choose from. Don't get me wrong, I would think you would have something running, either program wise, or in the taskbar that would send/receive
something during your capture.
As far as not seeing anything D* related that could be a unicast issue with the way D* MRV operates. You may never see those packets with wireshark
if D* addreses them directly from one unit to the other. That is one of the downfalls of wireshark. The only way to get around that is to put two extra ethernet cards in your PC, and set your machine up as a "true" packet sniffer. More info available if you are interested.
Hey, I've got an idea! Send
ME your H21 and I'll troubleshoot the issue. It may, unfortunately take a few months (years).


You are correct, though, if you can find an old hub, it should allow you to capture all traffic, just make sure your PC
and all of your D* gear is attached to that hub. Otherwise, purchase a switch with an actual monitor port.