Creating Virtual IP Addresses on Linux

Virtual IP addresses (or VIPs) allow you to use multiple IPs on a single physical network interface. Creating virtual IP addresses is often done to allow webservers to host multiple SSL encrypted web sites on a single webserver or to allow cluster suites to communicate on a dedicated IP address. This article will cover the two primary means of creating virtual IPs on a Linux host.

ifconfig

The first and most common method employed is to use the Linux command 'ifconfig' to create a VIP in the following manner, assuming that the interface being used is eth1.

# ifconfig eth1:0 192.168.1.28

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