Both the z/OS V2R1 Program Directory and z/OS® Installing Your Order contain step-by-step instructions that can be used to set up and verify a basic TCP/IP configuration with only the loopback address and a few key servers. For more information regarding these instructions, see the information about Wave 1D customizations in the z/OS V2R1 Program Directory or the information about verifying your installation in z/OS Installing Your Order.