NECO: Cross-Layer Survivability in WDM-based Networks

现代通信网络使用分层方法来构建，其中一个或多个电子层(例如，IP、ATM、SONET)构建在光纤网络之上。使用这多个层是为了简化网络设计和操作，并实现网络资源的高效共享。然而，这种分层也会导致某些效率低下和互操作性问题。该项目探讨了分层对网络可生存性的影响，并开发了对层间故障传播具有弹性的网络体系结构。尽管它的重要性和实用性，到目前为止，很少有人去了解网络在这种复杂的分层环境中的生存性。该项目的目标是为理解跨层生存性和通过不同层的网络拓扑的联合设计来在分层网络中提供生存性的机制而发展基础理论。这项研究的结果将包括：(I)开发用于评估分层网络体系结构的生存性的新度量；(Ii)开发通过逻辑和物理拓扑的联合设计来增强跨层生存性的机制。(Ii)开发具有良好跨层连通性的新网络体系结构。这项研究的结果将通过在会议、期刊和网络上发表广泛传播。这项研究将直接影响未来网络的设计和部署方式；尤其是将导致健壮且不受层间故障传播影响的网络设计

Modern communication networks are constructed using a layered approach, with one or more electronic layers (e.g., IP, ATM, SONET) built on top of an optical fiber network. This multitude of layers is used in order to simplify network design and operations and to enable efficient sharing of network resources. However, this layering also gives rise to certain inefficiencies and interoperability issues. This project explores the impact of layering on network survivability and develops network architectures that are resilient to failure propagation between layers. In spite its importance and practicality, to date, very little has been done to understand network survivability in this complex layered environment. The goals of this project is to develop a fundamental theory for understanding cross-layer survivability; and mechanisms for providing survivability in layered networks through the joint design of the network topologies at the different layers. The outcomes of this research will include: (i) the development of new metrics for assessing the survivability properties of layered network architectures (ii) the development of mechanisms for enhancing cross-layer survivability through the joint design of the logical and physical topologies. (ii) the development of new network architectures that have good cross-layer connectivity properties. The results of this research will be widely disseminated through publication in conferences, journals and the web. This research will directly impact the way in which future networks will be designed and deployed; and in particular, will lead to network designs that are robust and immune to failure propagation across layers