This paper presents a methodology for developing a specification for soft error performance of an integrated hardware/ software system that must achieve highly reliable operation. The methodology enables tradeoffs between reliability and cost to be made during the early silicon design and SW architecture phase. An accelerated measurement technique using neutron beam irradiation is also described that ties the final system performance to the reliability model and specification. The methodology is illustrated for the design of a line card for an internet core router.Index Terms-Communication system reliability, computer network reliability, integrated circuit design, integrated circuit radiation effects, neutron beams, neutron radiation effects, single event upset (SEU).
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