Configure DHCP Server in Linux

This configuration will work on all RPM based linux distributions (Redhat,Fedora,CentOS,etc.)

Steps to install and configure a DHCP Server

Step1: Install dhcp packages
[root@server ~#]yum install dhcp


Step2: Edit the dhcp configuration file located in /etc/dhcp/dhcpd.conf
[root@server ~#]vi /etc/dhcp/dhcpd.conf
#[Note: The lines to add or edit in dhcpd.conf file is colored brown. Enable the lines by removing ‘#’ if required and edit. Allways backup the configuration file before editing.]


#Add your domain name
option domain-name    ”servercomputing.com”;


#Add DNS  server addresses(for clients)
option domain-name-servers 192.168.10.50, 192.168.10.51;


#Set lease time
default-lease-time 600;


#set maximum lease time
max-lease-time 7200;


#activate dhcp server
authoritative;


#Add your ip address pool in below format. In this example network 192.168.10.0/24 and ip address pool is 192.168.10.201  to 250 for clients,gateway=192.168.10.1.
subnet 192.168.10.0 netmask 255.255.255.0 {
  range dynamic-bootp 192.168.10.201 192.168.10.250;
  option broadcast-address 192.168.10.255;
  option routers 192.168.10.1;
}


#This is the way to Reserve an ip address 192.168.10.29  for a special client named Accounts . [ MAC address based reservation]. Here 00:E0:5D:A0:6A:0C is the mac address of accounts pc’s NIC card(optional).
host Accounts {
  hardware ethernet 00:E0:5D:A0:6A:0C;
  fixed-address 192.168.10.29;
}


Step3: Start dhcp service
[root@server ~#]service dhcpd start


Step4: Add dhcp service to startup
[root@server ~#]chkconfig dhcpd on


Step5: To do in client computers
Set Obtain ip automatically in all windows and “Use DHCP” in linux client computers.

LABELS: CentOS, DHCP, dhcpd, Fedora, linux, Linux-server, Redhat