OpenFlow网络中定位高损耗链路的有效组播探测路由方案
Effective Route Scheme of Multicast Probing to Locate High-loss Links in OpenFlow Networks
摘要：
随着云计算和内容分发网络的普及，需要基于OpenFlow的集中管理的网络，具有灵活和动态的流量工程。为了保持网络的高服务质量，检测和定位高损耗链路是必要的。因此，在本文中，提出了一种测量框架，以迅速定位所有的高损耗链路的数据平面和控制平面上的测量所引起的负载最小化，它只假设标准的OpenFlow功能。它结合了一个主动的测量探测组播数据包沿设计的路由和被动的测量收集流量统计的探测流在选定的交换机端口在一个适当的顺序访问交换机。特别地，通过基于骨干和分支树（BBT）路由方案来设计测量路由，测量精度和测量开销（即，直到定位所有高损耗链路为止对交换机的访问次数）可以被平衡。数值模拟表明了我们的建议的有效性。
英文摘要：
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.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
