论文标题
多播探测的有效路线方案，以在OpenFlow网络中找到高损耗链接
Effective Route Scheme of Multicast Probing to Locate High-loss Links in OpenFlow Networks
论文作者
论文摘要
随着云计算和内容交付网络的普遍性，需要基于开放流的集中管理网络具有灵活和动态的交通工程。为了维持网络的高质量服务，必须检测和定位高损失链接。因此，在本文中，提出了一个测量框架，以迅速定位所有高损坏链接，并在数据平面和控制平面上同时载有测量平面，这仅假设标准的敞口函数。它通过沿设计的路线探测多播数据包，并通过适当的顺序顺序以访问开关的方式收集探测流的流量，从而结合了一个主动测量。特别是，通过设计基于骨干和支线树（BBT）路线方案的测量路线，可以平衡测量准确性和测量的开销（即，访问交换机的访问次数，直到定位所有高损失链接）。数值模拟证明了我们的提议的有效性。
With the prevalence of cloud computing and contents delivery networking, OpenFlow-based centrally-managed networks with flexible and dynamic traffic engineering are demanded. To maintain a high quality of service of the network, detecting and locating high-loss links is essential. Therefore, in this paper, a measurement framework is proposed to promptly locate all high-loss links with a minimized load on both data-plane and control-plane incurred by the measurement, which assumes only standard OpenFlow functions. It combines an active measurement by probing multicast packets along a designed route and a passive measurement by collecting flow-stats of the probing flow at selected switch ports in an appropriate sequential order to access switches. In particular, by designing the measurement route based on the backbone-and-branch tree (BBT) route scheme, the measurement accuracy and the measurement overhead (i.e., the number of accesses to switches until locating all high-loss links) can be balanced. The numerical simulation demonstrates the effectiveness of our proposal.
