I followed the following link for PXE boot, http://www.howtoforge.com/setting-up-a-pxe-install-server-on-ubuntu-9.10-p3

and I was able to ping the client from the server and also when I booted up the client It is getting the IP address from the server.

But later,I got this error

PXELinux 3.82 2009-06-09
. . . [other informations]
!PXE Entry point found (we hope) at 9D3B:0109 via plan A
UNDI code segment at 9D3B len 16C2
UNDI data segment at 933B len A000
Getting cached packet 01 02 03
. . . [other informations]
TFTP prefix:
Trying to load: pxelinux.cfg/ec5db4c0-74fe-d511-b9e7-3d9235afe5a1
Trying to load: pxelinux.cfg/01-00-17-31-b6-5e-a8
Trying to load: pxelinux.cfg/0A64491E
Trying to load: pxelinux.cfg/0A64491
Trying to load: pxelinux.cfg/0A6449
Trying to load: pxelinux.cfg/0A644
Trying to load: pxelinux.cfg/0A64
Trying to load: pxelinux.cfg/0A6
Trying to load: pxelinux.cfg/0A
Trying to load: pxelinux.cfg/0
Trying to load: pxelinux.cfg/default
Unable to locate configuration file
Boot failed: press a key to retry or wait for reset

I have put all the files mentioned in the link in tftpboot. Can anyone explain what could be the problem.

Thanks in advance