This is a sample profile that exercises most of the options. You can specify the name of a different bootptab file as an argument to BootPServer.exe. This simplest way to do this is to just make the change in your Windows shortcut, assuming you're running the Windows app version. By default, bootp servers return their own address in this field. In some instances, users may want to specify on their own which address to return.
Clients can use gateway addresses to get to servers which are outside their own subnet.