A resilient Internet infrastructure is critical in our highly interconnected society. However, the Internet faces several vulnerabilities, ranging from natural disasters to human activities, that can impact the physical layer and, in turn, the higher network layers, such as IP links. In this paper, we introduce Xaminer, the first Internet cross-layer resilience analysis tool, to evaluate the interplay between physical- and network-layer failures. Using a cross-layer Internet map and a failure event model, Xaminer generates a risk profile encompassing a cross-layer impact report, critical infrastructure identification at each layer, and the discovery of trends and patterns under different failure event settings. Xaminer's key strengths lie in its adaptability to diverse disaster scenarios, the ability to assess risks at various granularities, and the capability to generate joint risk profiles for multiple events. We demonstrate Xaminer's capabilities in cross-layer analysis across a spectrum of disaster event models and regions, showcasing its potential role in facilitating well-informed decision-making for resilience planning and deployments.

翻译：弹性互联网基础设施在我们高度互联的社会中至关重要。然而，互联网面临从自然灾害到人类活动等多种脆弱性，这些因素可能影响物理层，进而波及更高网络层（如IP链路）。本文提出Xaminer——首个互联网跨层弹性分析工具，用于评估物理层与网络层故障的相互作用。通过构建跨层互联网地图和故障事件模型，Xaminer可生成包含跨层影响报告、各层关键基础设施识别以及不同故障事件设置下趋势与模式发现的风险概况。Xaminer的核心优势在于其适应多样化灾难场景的能力、多粒度风险评估能力，以及为多事件生成联合风险概况的能力。我们通过一系列灾难事件模型和区域的跨层分析演示了Xaminer的功能，展示了其在促进弹性规划与部署中知情决策方面的潜在作用。