Networking

Reliability Analysis of a Fault Tolerant Switch

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Executive Summary

This paper proposes an enhancement to the Tagle-Sharma network, a high performance self routing fault tolerant switch fabric which employs an enhanced scheme of the banyan network. The enhancement incorporates a shared-buffer in each switching element of the network to handle evolving traffic in converged networks. As a consequence to the addition of buffer in the system, its complexity is increased. The authors investigate the effect of time dependent reliability, mean time to failure, and steady-state availability as a function of buffer and network sizes of the buffered Tagle-Sharma network. The proposed network is compared with the parallel banyan and benes networks, each is also using the same internal buffering scheme.

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