I know of none that take probabilities as inputs. Traditional network simulators, such as GNS3, let you model various failure modes, but probability seems squishy enough that I don’t see how it can be accurate, and thus helpful. It’s like that Dilbert cartoon where the pointy haired boss asks for a schedule of all future unplanned outages :) https://dilbert.com/strip/1997-01-29 -mel On Jan 15, 2019, at 11:59 AM, Vanbever Laurent <lvanbever@ethz.ch<mailto:lvanbever@ethz.ch>> wrote: I took the survey. It’s short and sweet — well done! Thanks a lot, Mel! Highly appreciated! I do have a question. You ask "Are there any good?” Any good what? I just meant whether existing network analysis tools were any good (or good enough) at reasoning about probabilistic behaviors that people care about (if any). All the best, Laurent