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Altera_Forum's avatar
Altera_Forum
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21 years ago

lwip 10Mbps

I am using the Cyclone Development board with uC/OS-II running LWIP and seeing many lost packets, Dup ack, and Out-Of-Order packets with TCP. I see all of the above issues when using 10Mbps hub...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
21 years ago

I used ethereal to monitor the traffic.

Before the patch, I was seeing every third packet having to be retransmitted due to Dup or lost packets. Now it is less frequent.

I still see checksum errors and lost packets at the start of data download on both 100Mbps and 10Mps systems. That can add seconds of over head. So there may be other isssues.