DHCP Server
CentOS
server config
/etc/dhcp/dhcpd.conf
subnet 192.168.2.0 netmask 255.255.255.0 {
option routers 192.168.2.1;
option subnet-mask 255.255.255.0;
option domain-name-servers 192.168.1.3,202.106.0.20;
next-server 192.168.1.3;
filename "pxelinux.0";
range dynamic-bootp 192.168.2.30 192.168.2.170;
option time-offset -18000; # Eastern Standard Time
option time-servers 192.168.1.3;
default-lease-time 86400;
max-lease-time 86400;
}