[syslinux] [pxelinux] pxelinux and TFTP block_size
Grégory MAMAN
gregory_maman at yahoo.fr
Thu Feb 26 03:00:46 PST 2004
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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