Connection preemption provides available and reliable services to high-priority connections when a network is heavily loaded and connection request arrival patterns are unknown, or when the network experiences link or node failures. Coupled Ž .with the capability to reroute connections preempted due to failure or preemption , connection preemption allows a high quality of service to be provided to network connections and bandwidth to be used more efficiently. The main contributions of this paper are the following. It presents a comprehensive simulation study of preemption in a general connection-oriented network setting. Our simulation study also provides useful insights into connection preemption and network dimensioning problems in order to achieve a desired level of network availability. Based on the observations made in this study, we designed two connection preemption selection algorithms that operate in a decentralizedrdistributed network where individual link managers run the ...
Mohammad Peyravian, Ajay D. Kshemkalyani