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Network tomography is a promising technique to achieve fault management in networks where the existing IP-based troubleshooting mechanism cannot be used. Aiming to apply Boolean network tomography to fault management, various heuristic methods for configuring monitoring trails have been proposed to localize link failures in all-optical mesh networks. However, these existing heuristic methods must...
Existing techniques for measuring available bandwidth measure the available bandwidth at bottlenecks along the path, and most of them do not specify the bottleneck location. In this paper, we propose an end-to-end measurement method for the hop-by-hop available bandwidth along a network path. Such a technique can facilitate advanced traffic control, especially in heterogeneous network environments...
A distributed computing network (DCN), such as a content delivery network, not only improves the response time to clients but also reduce the traffic from/to the data center over a wide area network (WAN), thereby decreasing the power consumed in the WAN. In this paper, we focus on the energy-saving aspect of the DCN and evaluate its effectiveness, especially considering traffic locality, i.e., the...
In this paper, we propose a proactive recovery method against multiple network failures for large-scale packet switching networks. The proposed method exploits the overlay networking technique. Specifically, it constructs multiple logical network topologies from the original overlay network topology by assuming various failure patterns. When a failure is detected, our method selects one topology....
Proactive recovery methods from network failures, based on multiple routing configurations, are effective for quick failure recovery, as compared with reactive recovery methods. However, there are two major problems, especially when we consider recovering from large-scale network failures: updating interval for recalculation of routing configurations against network growth, and network traffic concentration...
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