Necessary and sufficient condition for k crosstalk attacks localization in all-optical networks

An all-optical network (AON) is a network in which data does not undergo optical-to-electrical and electrical-to-optical conversion within the network. Transparency and non-regeneration features make attack detection and localization in AONs difficult. Among all attack methods, crosstalk attack has higher damage capability. In this paper, we make the following contributions. (1) We provide the crosstalk attack model and monitor model. (2) Based on these models, we prove necessary and sufficient conditions for k-crosstalk attacks diagnosable network. The key ideas used in our solution are to employ the status of connections as diagnostic data. (3) We propose an efficient monitor placement policy, a test connection setup policy, and a routing policy for such network. These conditions will lead to efficient k-attack detection and diagnosis algorithms.