论文标题
P4TE：脂肪树数据中心网络中基于PISA开关的交通工程
P4TE: PISA Switch Based Traffic Engineering in Fat-Tree Data Center Networks
论文作者
论文摘要
这项工作介绍了P4TE，一种带有PISA交换机的基于脂肪树拓扑的数据中心网络的带有负载吸引数据包的转发和流量控制机制。它达到了子-RTT反应时间，以改变网络条件，改善流量完成时间和平衡的链接利用。与经典的基于探针的监视方法不同，P4TE使用带内监视方法来识别数据平面中的流量事件。基于这些事件，它重新调整了路径的优先级。它使用基于启发式的负载转发路径选择机制来响应不断变化的网络条件，并通过向最终主机发送反馈来控制流量。它可以在新兴的V1Model.p4基于架构的可编程开关上实现，并且能够维持线路速率性能。我们的评估表明，P4TE在PISA管道中使用了少量资源，并且比ECMP和HULA的流动完成时间有所改善。
This work presents P4TE, an in-band traffic monitoring, load-aware packet forwarding, and flow rate controlling mechanism for traffic engineering in fat-tree topology-based data center networks using PISA switches. It achieves sub-RTT reaction time to change in network conditions, improved flow completion time, and balanced link utilization. Unlike the classical probe-based monitoring approach, P4TE uses an in-band monitoring approach to identify traffic events in the data plane. Based on these events, it re-adjusts the priorities of the paths. It uses a heuristic-based load-aware forwarding path selection mechanism to respond to changing network conditions and control the flow rate by sending feedback to the end hosts. It is implementable on emerging v1model.p4 architecture-based programmable switches and capable of maintaining the line-rate performance. Our evaluation shows that P4TE uses a small amount of resources in the PISA pipeline and achieves an improved flow completion time than ECMP and HULA.
