Yan,

Please do what was suggested to troubleshoot tftp, this is the only 
solution and reinstalling will not help. The message you get is quite 
typical from a misconfigured pxelinux looking files at the wrong location 
and thus not finding them... which is exactly what the message is saying.

The easiest is to find a tftp client and try the things manually. But it 
seems there is no tftp client in standard SL distrib, probably you can find 
one on the net.

Else check your configuration. If you put the tftp stuff under /tftpboot, 
you need to have a line like the following in your /etc/xinetd.d/tftp:

        server_args             = -s /tftpboot

At LAL, we put the PXE stuff in /tftpboot/quattor. Here is the content of 
this directory:

[root@quattorsrv RPMS]# ls /tftpboot/quattor/
pxelinux.0      sl304_i386        sl420_i386    sl440_x86_64  sl510_x86_64
pxelinux.cfg    sl305_i386        sl420_x86_64  sl450_x86_64  sl520_x86_64
rescue          sl305_i386.saved  sl430_i386    sl460_i386
rhel305_x86_64  sl307_i386        sl430_x86_64  sl460_x86_64
sl303_i386      sl308_i386        sl440_i386    sl500_x86_64

pxelinux.cfg contents is managed by aii-shellfe command but you need to 
ensure you defined the following parameter in /etc/aii/aii-shellfe.conf:

nbpdir = /tftpboot/quattor/pxelinux.cfg

Michel

--On vendredi 12 décembre 2008 23:24 +0800 Yan Xiaofei <[log in to unmask]> 
wrote:

> Dear ALL
>
> I got problem when I use SL52 for "dhcp + tftp + http" server to install
> os for other client machine. But it have some problem.
> The client machine could get ip address from dhcp server. And get the
> boot loader file(pxelinux.0) from tftp server. But it could not continue
> to get the rest of the files.
> The error message is :
> The message is :
> PXE entry point found (we hope) at 97BC:00DA
> My IP address seems to be C0A83825 192.168.56.37
> Ip=192.168.56.37:0.0.0.0:192.168.56.1:255.255.255.0
> TFTP prefix:
> Trying to load:pxelinux.cfg/01-00-22-19-82-6f-27    (This step is very
> slowly) Trying to load:pxelinux.cfg/C0A83825             (This step is
> very slowly)
>
> I have been use pxe for os install lot of time on sl4x. But never
> successful on sl5x. I test sl52_i386 and sl52_x86_64. It was the same
> problem.
>
> This was the log message on tftp and dhcp server :
>
>
> Dec 12 21:56:52 quattor dhcpd: DHCPDISCOVER from 00:1f:29:ef:36:28 via
> 202.122.33.1 Dec 12 21:56:52 quattor dhcpd: DHCPOFFER on 202.122.33.28 to
> 00:1f:29:ef:36:28 via 202.122.33.1 Dec 12 21:56:52 quattor dhcpd:
> DHCPDISCOVER from 00:1f:29:ef:36:28 via 202.122.33.1 Dec 12 21:56:52
> quattor dhcpd: DHCPOFFER on 202.122.33.28 to 00:1f:29:ef:36:28 via
> 202.122.33.1 Dec 12 21:56:52 quattor dhcpd: DHCPDISCOVER from
> 00:1f:29:ef:36:28 via 202.122.33.8 Dec 12 21:56:52 quattor dhcpd:
> DHCPOFFER on 202.122.33.28 to 00:1f:29:ef:36:28 via 202.122.33.8 Dec 12
> 21:56:56 quattor dhcpd: DHCPREQUEST for 202.122.33.28 (192.168.51.99)
> from 00:1f:29:ef:36:28 via 202.122.33.1 Dec 12 21:56:56 quattor dhcpd:
> DHCPACK on 202.122.33.28 to 00:1f:29:ef:36:28 via 202.122.33.1 Dec 12
> 21:56:56 quattor dhcpd: DHCPREQUEST for 202.122.33.28 (192.168.51.99)
> from 00:1f:29:ef:36:28 via 202.122.33.1 Dec 12 21:56:56 quattor dhcpd:
> DHCPACK on 202.122.33.28 to 00:1f:29:ef:36:28 via 202.122.33.1 Dec 12
> 21:56:56 quattor dhcpd: DHCPREQUEST for 202.122.33.28 (192.168.51.99)
> from 00:1f:29:ef:36:28 via 202.122.33.8 Dec 12 21:56:56 quattor dhcpd:
> DHCPACK on 202.122.33.28 to 00:1f:29:ef:36:28 via 202.122.33.8 Dec 12
> 21:56:56 quattor in.tftpd[23001]: RRQ from 202.122.33.28 filename
> pxelinux.0 Dec 12 21:56:56 quattor in.tftpd[23001]: tftp: client does not
> accept options Dec 12 21:56:56 quattor in.tftpd[23002]: RRQ from
> 202.122.33.28 filename pxelinux.0
>
>
> -------------------------------------------------------------------------
> ----------- Yan Xiaofei                                   Building: 209
> Computing Center, IHEP                        Tel: (+86) 10 8823 6852
> 19B Yuquan Road                              Fax：(+86) 10 8823 6839
> P.O. Box 918-7                                Email: [log in to unmask]
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> ---------------



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     * Michel Jouvin                 Email : [log in to unmask] *
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