Apache server documentation provides us clear set of steps to do name/IP based virtual hosting which is stated in the below URL
http://httpd.apache.org/docs/2.0/vhosts/examples.html
– Running several name-based web sites on a single IP address.
– Name-based hosts on more than one IP address.
– Serving the same content on different IP addresses
– Running different sites on different ports
– IP-based virtual hosting
– Mixed port-based and ip-based virtual hosts
– Mixed name-based and IP-based vhosts
– Using Virtual_host and mod_proxy together
– Migrating a name-based vhost to an IP-based vhost
– Using the ServerPath directive
