This Supplement to the President’s Fiscal Year (FY) 2011 Budget provides a technical summary of the budget request for the Networking and Information Technology Research and Development (NITRD) Program, as required by the High-Performance Computing Act of 1991 (P.L. 102-194), the Next Generation Internet Research Act of 1998 (P.L. 105-305), and the America COMPETES Act of 2007 (P.L. 110-69). The NITRD Program, now in its 19th year, provides a framework and mechanisms for coordination among Federal agencies that support R&D in advanced networking and information technology.