in this paper,we focus on a practical problem of providing an uniform criterion for accessing the impact of disasters on the networks.
nuiform
A five-scale degree of network damage is developed to indicate the impact of disaster events on network.
We combine two network metrics to determine the degree of network damage from the perspective of an ISP.
The degree of network damage provide a general framework for the network operators to assess many network failure scenarios,ranging from the single-link failures to catastrophic events.
Based on the proposed metrics,we can reflect the impact of different types of disasters with a general model,which facilitates various research aspects,