DISCLAIMER This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, make any warran@, exprrss or impiied, or assumes any legal liability or e b i i i t y for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disdosed, or represents that its use would not infringe privately owned rights. Reference W n to any specific

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... ercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, reconu~~~~Mon, or favoring by the United States Government or any agency thereof. The views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or any agency thereof. HIPPI-6400 technology dissemination ABSTRACT This report covers the technological aspects of High Performance Parallel Interface-6400 (HIPPI-6400), a forthcoming upgrade to the existing HIPPI protocol suite. The report concentrates on the technological advancements and situations that occur in a 6400 Megabids network and the solutions produced by the ANSI X3T11 committee. The first section of the report introduces HIPPI-6400 to familiarize the reader with basic concepts and lay groundwork for future sections. Section 2 analyzes the transmission control link-layer embedded in HIPPI-6400 hardware. Section 3 describes the Scheduled Transfer protocol and connection setup that allows the user to partake of the entire 6400 Mbit bandwidth; followed by Section 4 that describes the signaling interface. Section 5 provides an overview of switching requirements and constructs. Finally, Section 6 concludes the paper, describes works in progress, including simulation, and points to further reading.