Install and Setup DHCP Server on Ubuntu Linux

I had installed and setup DHCP Server on Ubuntu by below steps.

• Install dhcp packages
• Config dhcp server
• Restart dhcp service
• Modify and test interface on Client site

Install dhcp packages

At a terminal prompt, enter the following command to install dhcpd:
sudo apt-get install isc-dhcp-server

Config dhcp server

1. Config dhcp server as below step
   sudo vim /etc/dhcp/dhcpd.conf
   # Sample /etc/dhcpd.conf
default-lease-time 600;
max-lease-time 7200;
option subnet-mask 255.255.255.0;
option broadcast-address 192.168.1.255;
option routers 192.168.1.254;
option domain-name-servers 192.168.1.1, 192.168.1.2;
option domain-name "mydomain.example";

subnet 192.168.1.0 netmask 255.255.255.0 {
range 192.168.1.10 192.168.1.100;
}
   
2. Config dhcp server network interface
   sudo vim /etc/network/interfaces
   #eth1
auto eth1
iface eth1 inet static
address 192.168.1.1
netmask 255.255.255.0
   
3. Select Interface card of dhcp server
   sudo vim /etc/default/isc-dhcp-server
   INTERFACES="eth1"

Restart dhcp service

sudo service isc-dhcp-server restart
or
sudo service isc-dhcp-server start
sudo service isc-dhcp-server stop

Modify and test interface on Client site

1. Modify dhcp ethernet interface
   vim /etc/network/interface
   #eth1
auto eth1
iface eth1 inet dhcp
   
2. Down and up dhcp ethernet interface
   ifdown eth1
   ifup eth1
   
3. Check dhcp ethernet interface getting IP
   ifconfig

ubuntu documentation -《isc-dhcp-server》
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