[syslinux] [pxelinux] pxelinux and TFTP block_size

[Grégory MAMAN]

Thanks for your answer, 

I made tests with my network card which doesn't fail
with fragmented packets.

Sorry, but I don't understand the 32 connections you
are talking about.

Anyway, do you think it is possible ?

Thank you in advance

greg

 --- "H. Peter Anvin" <hpa at zytor.com> a écrit : >
Grégory MAMAN wrote:
> > Hello, 
> > 
> > I wanted to know if it is possible to specify tftp
> > block size > 2k in pxelinux.asm ? 
> > 
> > In the source of pxelinux.asm, it is said : "The
> code
> > assumes TFTP_LARGEBLK <= 2K.". 
> > 
> > What is the limitation ? Would it be possible to
> > increase this value ? 
> > 
> > Thanks in advance 
> > 
> 
> You don't want to do that.
> 
> Way too many PXE stacks will fail if they get
> fragmented packets.
> 
> The 2K limitation comes from the number of permitted
> connections, which
> is currently set to 32, times the size of a buffer
> needing to fit within
> a single 64K segment.
> 
> 	-hpa
>  


	

	
		
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