How to Configure Static IP Address on Ubuntu 11.10

During the installation, Ubuntu installer has configured this server to get it’s ip address via DHCP, then we have to change this because a server should have a static IP address. This post will guide you how to configure static ip address on Ubuntu 11.10 linux server. This steps may working on other versions of Ubuntu.

Edit /etc/network/interfaces as per below command :

root@ubuntu11:~# vi /etc/network/interfaces

Original network interface configuration on Ubuntu 11.10 server is as below :

# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).

# The loopback network interface
auto lo
iface lo inet loopback

# The primary network interface
auto eth0
iface eth0 inet dhcp

As an example, configure static ip address as below :

# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).

# The loopback network interface
auto lo
iface lo inet loopback

# The primary network interface
auto eth0
iface eth0 inet static
        address 192.168.1.49
        netmask 255.255.255.0
        network 192.168.1.0
        broadcast 192.168.1.255
        gateway 192.168.1.1

How to restart the network interface :

root@ubuntu11:~# /etc/init.d/networking restart

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