Experimental gigabit networks are over- 

 laying and enhancing the Internet. 

 ARPA's Networking Systems program 

 develops and evaluates these technolo- 

 gies as foundations for a global scale, 

 ubiquitous information infrastructure 

 supporting Grand Challenge. National 

 Challenge, and Defense needs. 



Scalable microkernel operating systems with a full com- 

 plement of servers will enable software and system 

 developers to work withi a uniform set of application 

 interfaces over the scalable computing base. Through 

 the use of multiple servers, different application inter- 

 faces can be supported to enable the transition from 

 legacy systems such as those available today. The sys- 

 tem software may be configured as needed for particular 

 applications including trusted and real-time systems. 



Advanced components and packaging technologies 

 including the associated design, prototyping, and sup- 

 port tools will enable higher performance and more com- 

 pact systems to be developed. These technologies also 

 enable the development of embedded systems so that 

 computing can be put in specialized physical and envi- 

 ronmental settings (such as airplanes, spacecraft, land 

 vehicles, or ships). 



Early evaluation and experimental use of new computing 

 systems is an integral part of the overall development 

 process. Policies and mechanisms have been devel- 

 oped that enable the timely purchase of new small to 

 medium scale computing systems for the purpose of 

 early evaluation and experimental use. As these tech- 

 nologies mature, larger scale systems are purchased 

 and deployed by other parts of the HPCC Program in 

 consultation with their user communities. 



NREN 



ARPA projects develop scalable networking technolo- 

 gies to support the full range of applications from local 

 networks, to regional networks, to national and global 

 scale networks including their wireless and mobile 

 extensions. Different kinds of communication channels, 

 or "bitways", will be integrated to enable network con- 

 nectivity to be achieved between users and their applica- 

 tions. 



Internet technologies will be developed to enable contin- 

 ued scaling of the networks to every individual and sys- 

 tem needing access. Scalable high performance net- 

 working technologies will be developed to enable gigabit 

 speeds to be delivered to the end users. A variety of 

 networking testbeds developed in cooperation with other 

 agencies are used to develop, demonstrate, and experi- 

 mentally deploy new networking technologies. As these 

 technologies mature, larger scale systems are deployed 

 by other parts of the Program in consultation with their 

 user communities. 



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