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The emergence of value added services relying on a higher interactivity has altered the requirements of current transport network. Diverse traffic classes are processed by a large-scale optical network, imposing a more efficient utilization of their network infrastructure resources. Such services generally cross multiple domains, but interdomain path computation algorithms still have some limitations. This paper describes a priority based path computation algorithm to meet all QoS requirementsdoi:10.11591/eecsi.v1.385 fatcat:m72gtsurzffulgemmdaso2stru