How to change Ubuntu network from DHCP to Static IP Address

• Open the /etc/network/interfaces file :-

        ==> sudo nano /etc/network/interfaces

• You can see the following lines in interfaces file :-

        ==> auto eth0
                iface eth0 inet dhcp

• Change the following lines :-

        ==> auto eth0
                iface eth0 inet static
                address 192.168.1.11
                netmask 255.255.255.0
                network 192.168.1.0
                broadcast 192.168.1.255
                gateway 192.168.1.1
                dns-nameservers 8.8.8.8

Reboot your system for change Network.