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Altera_Forum's avatar
Altera_Forum
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12 years ago

TSE Gigabit will not generate TX pause frames

Hello, I have done everything I can see to try for over a day now but have been unable to get pause frames to be transmitted on a Gigabit link. Even with XOFF_GEN set in the command register n...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
12 years ago

I don't know the answer to your question, but you can avoid TCP naks by carefully configuring your TCP window size. In order to avoid those naks, you need to be sure that the TCP window size is always smaller than your incoming rx fifo. So either increase your rx fifo, or hack into your embedded OS to use a lower TCP window size. (depending on the OS you have, it may be a bit tricky to find out where it is defined).

Once I did that on my system I never got any missed TCP packets, even with a very fast PC on the other end.