Ubuntu- Server to install DHCP Server
#app-get Install dhcp3-Server or sudo apt-get install isc-dhcp-server

Red hat/fedora/centos - Server to install dhcp Server
#yum install dhcp

configuration file for dhcpRedhat/fedora/centos linux DHCP configuration file

/etc/dhcp/dhcpd.conf
ubuntu linux configuration file
/etc/dhcp/dhcpd.conf

add below entires scope for dhcp-server and lease-time

default-lease-time 600;

max-lease-time 7200;

subnet 10.1.1.0 netmask 255.255.255.0 {
  range 10.1.1.3 10.1.1.254;
}

subnet 192.168.0.0 netmask 255.255.0.0 {
}

configuration of host configuration

host printer {
  hardware ethernet 00:16:d3:b7:8f:86;
  fixed-address 10.1.1.100;
}

host web-server {
  hardware ethernet 00:17:a4:c2:44:22;
  fixed-address 10.1.1.200;
}

configuration of dhcp-server relay agent

# apt-get install isc-dhcp-relay

Then create a configuration file /etc/default/isc-dhcp-relay with two lines:

SERVERS="192.168.5.5"
INTERFACES="eth1"

Bootp Support for pxe Server

host bootp {
              hardware ethernet 00:00:2e:55:12:09;
              fixed-address Server address;
              filename "/path/to/tftpboot/bootp.boot";
            }

how to enable options in dhcp

add the line that
options 60 or so on on dhcp conf file