I heartily endorse all these comments!

John O'Gorman

Conrad Lawes wrote:
> 
> When using an Etherboot (or BOOTP) boot ROM network
> booting is quite straightforward:
> The client PC contacts the DHCP (or BOOTP) server to
> get its IP address and the name of the
> boot image file (ltsp kernel) to transfer down and
> execute.  The client PC uses TFTP to
> download the ltsp kernel from the boot server; hence
> the reason for the TFTP daemon.
> 
> In PXE booting, things are little different.  The PXE
> client must first download a
> network bootstrap program (nbp) also known as the PXE
> loader.  The PXE loader will in turn
> transfer down the ltsp kernel.  Why is this so?  This
> is just the nature of PXE.
> The PXE loader or nbp must not be greater than 32K in
> size; otherwise, you'll get the
> unintuitive "PXE-E3A TFTP too many packages"  error.
> Furthermore,  PXE boot ROMs are
> unable to execute tagged kernels.
> 
> Have a look at the PXE-LTSP How-To or the PXELINUX doc
> for details. These files have links on the LTSP
> website.
> 
> In the case of PXELINUX, the PXE loader is the called
> pxelinux.bin.  Pxelinux.bin reads the
> default.cfg file to determine the ltsp kernel to
> download.  If you find the PXELINUX
> approach too complicated then try the  PXE-Etherboot
> approach.
> 
> The PXE-Etherboot method is quite ingenuious. In a
> nutshell, the nbp code forces your PXE
> boot ROM to function like a normal Etherboot boot ROM
> or floppy. In this approach, you can
> use any of LTSP kernel as-is.  Normally, PXE boot ROM
> can't handle a kernel that has been
> tagged using mknbi - which is usually the case with
> pre-built kernels  found on the ltps website.
> 
> Many corporate desktops sold by Dell, Compaq, IBM and
> others usually come with a PXE boot ROM built-in.
> Some participants might recommend that you should
> reflash (reprogram) these boot ROMs with Etherboot
> code.  However, I find this endeavour pointless, if
> not impossible, since the PXE-Etherboot method
> mentioned earlier offers the same end result.
> Furthermore, retaining the PXE code offers you the
> flexibility to work with many PXE-aware desktop
> management tools such as IBM's LCCM, Novell's
> Zenworks, Symantec Ghost, Altiris Express, and even -
> heyhem - Windows 2000  Remote Installation Services.
> With PXE you can keep your options open and enjoy the
> best of all worlds.
> 
> --- Pascal OFFREDO <[EMAIL PROTECTED]> wrote:
> > Hi,
> >
> > Can anyone tell me what are the differences between
> > pxe and Etherboot,
> > and the advantages and drawbacks of both !
> >
> > Regards
> >
> >
> >
> >
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> >
> 
> =====
> 
> Conrad Lawes
> 
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