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The bandwidth of the network analyzer packet capture interface is much lower than the native OS bandwidth. I doubt you will be able to get 500 mbps out of it. Remember also that UDP doesn't guarantee delivery of all data. If it is critical to get all data use TCP, or build your self a retransmit mechanism.
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500 Mbps will probably not be possible for the DE2-115 to TX at. right now i am maxing out at 348 Mbps with payload as 1300. I will try increasing the clock to see if it helps, but i doubt it will help. If not than I am planning do some additional data processing in the fpga to "compress" the data. If all else fails, i could use usb and the second ethernet as well.
right now i am designing the system in such a way that packet loss will not be an issue, but there are too many packet drops, than i have will do a write a retransmit protocol.
but just out of curiosity, what other mode of data transfer can be faster than Ethernet on this board. I would imagine usb will not be able to use full 480 Mbps either.
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