Grid computing enables the sharing of a wide range of geographically distributed resources including computers, storage
systems, specialized devices, and network infrastructures that are owned and managed by different organizations for
solving large scale computational and data intensive applications. Optical transports allow a more efficient design by
providing the means to transmit large amounts of data with low cost and reliability. Group multicasting is considerable
communication requirement in grid networks. Routing and wavelength assignment algorithm can greatly influence the
performance of optical network, such as network blocking, resource utilization. This paper investigates the problem of
routing and wavelength assignment for group multicast in optical grid networks based on network resource reservation.
A minimum resource fragmentation summation (MRFS) algorithm is proposed, presented and evaluated. Simulation
results show that the proposed algorithm represents higher performance on reducing blocking probability and increasing
resource utilization.
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