How to Configure Static IP Address on Ubuntu 11.10

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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 :

[email protected]:~# 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 :

[email protected]:~# /etc/init.d/networking restart

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