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In this paper, a new preemption policy is proposed to minimize rerouting in MPLS networks. It is complemented by an adaptive scheme that selects lower priority LSPs that can afford to have their rate reduced. The selected LSPs will fairly reduce their rate in order to accommodate the new high-priority LSP setup request. Simulation results indicate that our policy can improve the network resource utilization...
The preemption policy with three main preemption optimization criteria is proposed in many literatures and the choice of LSPs to be preempted is an NP-complete problem. We propose a heuristic algorithm called B-PREPT to solve the problem. Simulation results indicate that our algorithm has higher choice accuracy than the well-known heuristic algorithm recently cited by many other papers. Moreover,...
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