This Microsoft Test Lab Guide (TLG) provides you with step-by-step instructions to create the Windows Server 2012 R2 Network Virtualization with System Center 2012 R2 Virtual Machine Manager (VMM) test lab, using computers running Windows Server 2012 R2. This test lab is based on four physical computers, each hosting multiple virtual machines. Updated September 2013 to include forwarding gateway and NAT functionality.
This is core learning. Read, build and learn at http://www.microsoft.com/en-us/download/details.aspx?id=39284.