IP HTTP Server
This command allows the router to act as a http server. Nowadays, this command is mostly used to setup Cisco SDM.
Router(config)#ip http server
In this example we configure the ip http server command on a router to let it act as a http server.
2611XM(config)#ip http server
Below, we can see the default webpage the router generates. This page lets you run various commands via the web interface.