中文摘要：

随着IP服务的普及,如何通过提高IP网络的生存性来确保IP服务的可靠性是目前研究的热点。本文首先从系统的角度阐述了生存性及其相关的概念,并对这些概念之间的区别、联系进行了讨论;其次,通过对IP网络的结构、协议进行概括,分析了由IP层提供生存性的优点;最后,系统阐述了IP层生存性的研究现状、解决方案以及未来面临的挑战。

英文摘要：

IP network is becoming an important infrastructure and its resilience has long been a hot topic in both research and industrial area. In this paper,we introduced the basic concept of IP resilience from the systematic perspective. Through reviewing on the IP network structure and protocols we further analyzed the advantage of improving the IP resilience. At last,we introduced the state of the art and challenges in this research area.