Research on systematic metrics of network survivability

As networks develop into large-scale systems, survivability of network systems is imperative. The systematic metrics of network survivability are used to measure or evaluate network survivability. This Paper summarizes the systematic metrics and their lack for measuring or computing network survivability while providing an easy way to reference baseline of the current state. It also provides some principles of network survivability metrics, and divides the current network survivability metrics into three types: target-based network survivability metrics, method-based network survivability metrics, and description-based network survivability metrics. At last, the trend of network survivability metrics is given: A set of quantitative, user-orientation, hierarchical and systematic survivability metrics, which can reflect full aspects and characters during the whole process of survivable networks, are required.