Abstract

This paper proposes for the first time a multi-layer Lambda Grid, which is a platform to establish dynamically a computing environment with a guaranteed level of throughput and bandwidth over converged IP and optical networks according to each client reservation request. It enables client-side visualization of a computing environment comprising converged IP and optical networks and geographically distributed computing domains. In addition, it dynamically reserves a packet switched path/tunnel (sub-lambda) with the exact requested bandwidth and computer resources according to each client reservation request. Moreover, it links the reserved path to the reserved computers, controls the reserved sub-lambda and the relevant lambda as needed, and routes only the reserved packet flow between the reserved computers to the reserved sub-lambda. In terms of cost performance and bandwidth flexibility, it can use network resources more effectively than existing Lambda Grids. Through the multi-layer Lambda Grid, clients can execute applications in an established computing environment as if the environment was a virtual private computing environment for clients. To achieve the multi-layer Lambda Grid, this paper also proposes a novel technology. This technology dynamically reserves a sub-lambda with the exact requested bandwidth according to each client reservation request. Moreover, it links the reserved sub-lambda to the reserved computers, and controls the reserved sub-lambda and the relevant lambda as needed. In addition, it routes only the reserved packet flow between reserved computers to the reserved sub-lambda. To evaluate the feasibility of the technology, a common computing environment with the multi-layer Lambda Grid for scientific calculation, file transfer, and high-definition video streaming services is presented in an actual field environment. Through this experiment, the total feasibility of the multi-layer Lambda Grid is shown.

© 2009 IEEE

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