DHCP problem in diskless Linux Booting

Hi I want to boot diskless pc with Linux (bpbtach)

I have configured DHCP & TFTP & both run fine.
According to my knowledge to work on a PXE bootrom i need
option option-135 "-i"; # for PXE 1.0
& option option-155 "-i"; # for PXE 2.0

When i add this entries to my dhcpd. conf it gives me below mentioned
error

Starting dhcpd: Internet Software Consortium DHCP Server V3.0pl1
Copyright 1995-2001 Internet Software Consortium.
All rights reserved.
For info, please visit http://www.isc.org/products/DHCP
/etc/dhcpd.conf line 33: unknown option dhcp.option-135
option option-135 "-i"
^
Configuration file errors encountered -- exiting


#### My dhcpd.conf contents are as under ####

ddns-update-style interim;
option subnet-mask 255.255.255.0;
default-lease-time -1;



# Definition of PXE-specific options
# Code 1: Multicast IP address of bootfile
# Code 2: UDP port that client should monitor for MTFTP responses
# Code 3: UDP port that MTFTP servers are using to listen for MTFTP
requests
# Code 4: Number of secondes a client must listen for activity before
trying
# to start a new MTFTP transfer
# Code 5: Number of secondes a client must listen before trying to
restart
# a MTFTP transfer
#option vendor-encapsulated-options 01:04:00:00:00:00:ff;

option space PXE;

option PXE.mtftp-ip code 1 = ip-address;
option PXE.mtftp-cport code 2 = unsigned integer 16;
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;

subnet 132.147.160.0 netmask 255.255.255.0 {
option routers 132.147.160.151;

host nilo-eth0 {
hardware ethernet 00:0D:61:6E:CC:97;
filename "bpbatch";
next-server 132.147.160.151;
fixed-address 132.147.160.152;
#option option-135 "-i";

#option option-135 "test";

# PXE specific options

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

option PXE.mtftp-ip 0.0.0.0;
vendor-option-space PXE;
}
}
}

Help me ASAP

THANX in advance

Regards,

CP

Hi,

See my dhcpd.conf file in a precedent post from the 11/22/2005 on the same
newsgroup, it works, subject is : "How to add a second DHCP server in a
network to use PXE boot without conflict with the first one ?"

Hilaire Verschuere