From mboxrd@z Thu Jan  1 00:00:00 1970
From: Rafal Jaworowski <raj@semihalf.com>
Date: Wed, 05 Sep 2007 19:06:23 +0200
Subject: [U-Boot-Users] Multicast TFTP problems
In-Reply-To: <46D58DF8.3020209@qstreams.com>
References: <46CD5641.7060306@semihalf.com> <46CD94A5.8070606@qstreams.com>
	<46D52240.1030209@semihalf.com> <46D58DF8.3020209@qstreams.com>
Message-ID: <46DEE20F.2090702@semihalf.com>
List-Id: <u-boot.lists.denx.de>
MIME-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: 7bit
To: u-boot@lists.denx.de

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