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The concept of Transport Virtualization (TV) enhances the capabilities of future networks. TV enables transport mechanisms with arbitrary resource usage independent of the underlying transport system. The simplest form of TV can be achieved by collecting multiple transport resources (even from different virtual networks or providers) and selecting the best resources for exclusive or concurrent use...
It is known that there exist Triangle Inequality Violations (TIVs) with respect to network Quality of Service (QoS) metrics such as latency between nodes in the Internet. This motivates the exploitation of QoS-aware routing overlays. To find an optimal overlay route, we would usually need to examine all the possible overlay routes. However, this requires both measuring QoS between all node pairs and...
As Internet applications demand high flexibility and reliability, giving an end-user control over routing while not breaking the Internet has been attractive to both end-users and Internet Services Providers (ISPs). In this paper, we present RouteLite, a lightweight routing scheme that achieves "controlled flexibility", i.e., provide users with flexibility in selecting routes while only...
This paper investigates the stability characteristics of overlay networks performing switching between multiple virtual paths. A global stability condition for switched-control-systems has been applied to overlay path switching frequency, that can be incorporated into design of better routing protocols for overlay networks. Further, NS-2 based simulations have been carried out on an overlay network...
Despite the Internet's ability to recover from link failures, the process is laborious. Scalable one-hop source routing (SOSR) hastens the recovery, without complex routing algorithms, by routing around failures via indirect paths created using randomly-selected intermediate end-nodes. Even with only 39 intermediaries available, SOSR effectively masks out 89% of Internet core link failures. However,...
Simultaneous use of multiple disjoint Internet paths holds promise for exploiting available bandwidth as well as reacting more quickly to Internet path faults. While routing overlay networks have provided a method for accessing these paths, out-of-order packet delivery, which results from dispersion of packets across paths of varying latency, severely degrades the performance of highly optimized transport...
In this paper we discuss the application of a biologically-inspired approach for path selection in overlay networks under the constraints of in-order packet delivery. We apply the concept of attractor selection by modeling the path selection process in multipath overlay as a stochastic dynamical system that instantaneously converges to a sufficiently good solution utilizing the system inherent noise...
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