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Large scale cloud applications may require users to get multiple resources (e.g., VMs, storage) from different sites and simultaneously connect each pair of resources by a path that can satisfy certain Quality-of-Service (QoS) requirements. Finding such paths with the bandwidth constraint is known as the unsplittiable flow problem, which is shown to be NP-hard. Accordingly, various approximations...
Routing a given set of flows with bandwidth requirements is a fundamental problem, which has been formulated as Unsplittable Flow Problem (UFP). One of the key issues in this formulation is that the bandwidth requirement is fixed for each flow. In practice, however, many applications (e.g., video-on-demand, backup and replication services) would greatly benefit from getting more bandwidths beyond...
Being an important and yet a challenging problem, the QoS-based routing in the converging Internet has received significant attention from the research community. However, most of the QoS-based routing research is conducted in the context of intra-domain routing, leaving QoS-based inter-domain routing relatively open. In this paper, we focus on QoS-based inter-domain routing and specifically investigate...
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