论文标题
对野外ECN遍历的崭新审视
A Fresh Look at ECN Traversal in the Wild
论文作者
论文摘要
由于低潜伏期，低损失和可扩展的吞吐量（L4S）技术，因此明确的拥塞通知（ECN）领域已采取了新的重要性，该技术专为非常延迟敏感的应用（例如云游戏和云渲染的VR/AR）而设计。 ECN和L4需要由客户端和服务器支持，以及网络路径中的所有设备。我们已经确定，中间网络设备清除或“漂白” ECN标志，发生并量化发生的频率，为什么发生并确定发生在网络中发生的位置，发生了ECN设备的“ ECN漂白”。在这项研究中，我们使用在不同的客户和服务器上使用互联网上部署的探针进行了一项有关ECN领域端到端遍历ECN领域的全面测量研究。使用这些探针，我们在Internet上的各种网络路径上识别并找到ECN漂白的实例。在2021年底和2022年初进行的六个月测量中，我们发现因网络之间的流行率差异很大。一个云提供商和两个蜂窝提供者将ECN领域视为政策。在其余的中，我们发现了129,252个路由器中的1,112个，我们测量的路径中有4.17％显示ECN漂白。
The Explicit Congestion Notification (ECN) field has taken on new importance due to Low Latency, Low Loss, and Scalable throughput (L4S) technology designed for extremely latency-sensitive applications (such as cloud games and cloud-rendered VR/AR). ECN and L4S need to be supported by the client and server but also all devices in the network path. We have identified that "ECN bleaching", where an intermediate network device clears or "bleaches" the ECN flags, occurs and quantified how often that happens, why it happens and identified where in the network it happens. In this research, we conduct a comprehensive measurement study on end-to-end traversal of the ECN field using probes deployed on the Internet across different varied clients and servers. Using these probes, we identify and locate instances of ECN bleaching on various network paths on the Internet. In our six months of measurements, conducted in late 2021 and early 2022, we found the prevalence varied considerably from network to network. One cloud provider and two cellular providers bleach the ECN field as a matter of policy. Of the rest, we found 1,112 out of 129,252 routers, 4.17% of paths we measured showed ECN bleaching.
