Netsh.exe is a tool an administrator can use to configure and monitor Windows-based computers at a command prompt. With the Netsh.exe tool, you can direct the context commands you enter to the appropriate helper, and the helper then carries out the command. A helper is a Dynamic Link Library (.dll) file that extends the functionality of the Netsh.exe tool by providing configuration, monitoring, and support for one or more services, utilities, or protocols. The helper may also be used to extend other helpers.
If You want to set your IP on a server or changed it quickly.
netsh interface ip set address name="Local Area Connection" static 10.20.30.10 255.255.255.0 10.20.30.253
netsh interface ip set dns name="Local Area Connection" static 10.20.30.100
netsh interface ip add dns name="Local Area Connection" 10.20.30.253
Or Do a Wireless connection reset
netsh interface set interface "Wireless Network Connection" DISABLED
netsh interface set interface "Wireless Network Connection" ENABLED
Play with Netsh If you want to setup a windows 2008R2 Core server you must(better) use Netsh.