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Scheduling algorithms for bounded delay service in virtual networks

机译:虚拟网络中有界延迟服务的调度算法

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With their widespread deployment, the need to provide QoS in virtual networks is being realized. We show that traditional scheduling algorithms like WFQ are incapable of providing bounded delay service in a virtual network. The problem arises because traffic of a number of sessions sharing a virtual link in a virtual network is aggregated arid tunneled through the physical network, which cannot isolate the traffic of well behaved sessions from that of misbehaving sessions. We show that this problem can be solved by regulating output burstiness on virtual links. Using the theory of latency rate servers, we show that latency rate servers with bounded output burstiness, may be used in a virtual network to provide bounded delay service. This gives a method to design a generic class of scheduling algorithms for virtual networks. Finally, we discuss how to integrate best effort and real-time traffic in a virtual network.
机译:通过广泛的部署,正在实现在虚拟网络中提供QoS的需要。我们表明,像WFQ这样的传统调度算法无法在虚拟网络中提供有界延迟服务。出现问题,因为在虚拟网络中共享虚拟链接的许多会话的流量都是通过物理网络聚合的干旱隧道,它无法将表现良好的会话的流量与行为不端的会话中的良好表现的流量进行聚合。我们表明,通过调节虚拟链路上的输出突发,可以解决此问题。使用延迟率服务器理论,我们示出了具有有界输出突发的延迟率服务器,可以在虚拟网络中使用以提供有界延迟服务。这给出了一种为虚拟网络设计一般调度算法的方法。最后,我们讨论如何在虚拟网络中集成最佳努力和实时流量。

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