5 Sep
2007
5 Sep
'07
7:06 p.m.
Ben Warren wrote:
The size of 1468 works fine for me on an MPC8349EMDS board. I captured the transfer using Wireshark (Ethereal) and the numbers match exactly as I've shown above. Here are the first few transfers.
[...]
The only thing I can think of is that something on your network is limiting the MTU size to less than 1500 bytes. Are you using VLANs or PPPoE? Maybe your server has its MTU limited to 1486?
Hi Ben,
Thanks for your help. It turned there was a bug in the MPC5121 FEC driver which occured only upon some bigger frames, so it wasn't anything MTU-related or the TFTP code. Strangely enough, the frame size offset it would or not corrupt coincided with the 46 bytes that are overhead for the TFTP...
kind regards, Rafal