arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2002.00473cs.NI
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METTEOR:面向商业数据中心网络的健壮多流量拓扑工程

METTEOR: Robust Multi-Traffic Topology Engineering for Commercial Data Center Networks

Min Yee Teh, Shizhen Zhao, Keren Bergman

摘要:

在过去的十年中,已经提出了许多光路交换数据中心网络,以获得更高的容量,尽管到目前为止这些架构的商业采用很少。这些架构共同面临的一个主要挑战是难以处理具有高交换延迟的光电路交换机(OCS)的突发业务。先前的工作通常依赖于快速切换的OCS原型,通过频繁的重新配置来更好地对流量变化做出反应。不幸的是,这种方法进一步增加了控制平面的复杂性。我们提出了METTEOR,一个易于部署的解决方案,光路交换数据中心,这是专为商业OCS的当前能力。使用多个预测流量矩阵,METTEOR设计的数据中心拓扑结构对流量变化不太敏感,因此无需在流量变化时频繁重新配置OCS。使用生产痕迹的广泛评估的基础上的结果表明,METTEOR增加了直接跳流量的百分比约80%,在一个胖树在可比的成本,并通过约30%,在一个统一的网格,在可比的最大链路利用率。与在每个流量矩阵上重新配置OCS的理想解决方案相比,METTEOR即使每两周重新配置一次,也能实现接近最佳的带宽利用率。这大大降低了在商业环境中执行METTEOR所需的控制器和管理复杂性。

英文摘要:

Numerous optical circuit switched data center networks have been proposed over the past decade for higher capacity, though commercial adoption of these architectures have been minimal so far. One major challenge commonly facing these architectures is the difficulty of handling bursty traffic with optical circuit switches (OCS) with high switching latency. Prior works generally rely on fast-switching OCS prototypes to better react to traffic changes via frequent reconfigurations. This approach, unfortunately, adds further complexity to the control plane. We propose METTEOR, an easily deployable solution for optical circuit switched data centers, that is designed for the current capabilities of commercial OCSs. Using multiple predicted traffic matrices, METTEOR designs data center topologies that are less sensitive to traffic changes, thus eliminating the need of frequently reconfiguring OCSs upon traffic changes. Results based on extensive evaluations using production traces show that METTEOR increases the percentage of direct-hop traffic by about 80% over a fat tree at comparable cost, and by about 30% over a uniform mesh, at comparable maximum link utilizations. Compared to ideal solutions that reconfigure OCSs on every traffic matrix, METTEOR achieves close-to-optimal bandwidth utilization even with biweekly reconfiguration. This drastically lowers the controller and management complexity needed to perform METTEOR in commercial settings.

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。

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