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Altera_Forum's avatar
Altera_Forum
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14 years ago

Maximum UDP packet Size for NIOS-ii

Hello Friend's, finally i have come out from "no free buffer for rx":). Just by increasing the UDP packet size from 512 to 1472 bytes. So if we increase the UDP packet size the number...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

A UDP packet can have a size of up to 64k (including headers), but if the transport interface used under IP doesn't support packets this size, it will either be fragmented or dropped. I think that a most IP stacks just choose to drop them. In order to avoid fragmentation on an Ethernet link, the biggest payload size is 1472 bytes.