Pxe Installation!!!

[Govind C]

Folks,
I am trying to install Redhat Es 3.0 using a  PXE server.I have 
configured the PXE server as recommended.

When I try to bootup my client,the kernel gets loaded and the 
installation stops at "Sending request for Ip information for eth0...".

I have put my ks.cfg and dhcpd.conf file details below

Dhcpd.conf
server-identifier 192.168.11.200;

# option definitions common to all supported networks:
default-lease-time 21600;
dynamic-bootp-lease-length 1200;
use-host-decl-names on;
ddns-update-style none;

option PXE.mtftp-sport code 3 = unsigned integer 16;
option PXE.mtftp-tmout code 4 = unsigned integer 8;
option PXE.mtftp-delay code 5 = unsigned integer 8;
option PXE.discovery-control code 6 = unsigned integer 8;
option PXE.discovery-mcast-addr code 7 = ip-address;
option PXE.boot-menu code 9 = string;
option PXE.menu-prompt code 10 = { unsigned integer 8, text };

class "PXE" {
        match if substring(option vendor-class-identifier, 0, 9) 
= "PXEClient";
        option vendor-class-identifier "PXEClient";
        vendor-option-space PXE;
}

subnet 192.168.11.0 netmask 255.255.255.0 {
  range dynamic-bootp 192.168.11.10 192.168.11.20;
  option routers 192.168.11.254;
  option broadcast-address 192.168.11.255;
}
host one {
   hardware ethernet 00:0E:0C:08:06:7C;
   fixed-address 192.168.11.21;
 }

ks.cfg
install
lang en_US
langsupport en_US
keyboard us
mouse genericusb
timezone --utc America/Los_Angeles
rootpw abc123
reboot
bootloader --linear --location=mbr
nfs --server 192.168.11.200 --dir /home/pxeboot/el-3.0
#driverdisk 10.6.72.20:/home/pxeboot/grizzly-7.3/aic79xx-driverdisk --
type=nfs
clearpart --linux
part /boot --fstype ext3 --size 64 --ondisk sda
part  swap --size 512 --ondisk sda
part / --fstype ext3 --size 1 --grow --ondisk sda
network --bootproto dhcp --device eth0
auth  --useshadow  --enablemd5
firewall --disabled
#Do not configure the X Window System
skipx

%packages
@Everything
# @Server

%pre
/mnt/source/install_diag.sh /dev/sda

%post --nochroot

%post