A quantitative survivability test method in the large scale network based on SD

Survivability is a necessary property of network system in disturbed environment, and recovery ability plays an important role in survivability. This paper presents a novel survivability metric-Network Recovery Time. A concept of Source-Destination Pair, i.e. SD Pair, is created to measure this metric in quantity, and a test method based on SD Pair for calculating the Network Recovery Time is provided. In the method how to select SD Pairs to satisfy the test requirement in the large scale network is also discussed in detail. Analysis and experiment shows that the method can measure the Network Recovery Time by calculating the SD Recovery Time, and can be used to test and evaluate quantitative survivability of different strategies in the large scale network.