Design of an OTN-based Failure/Alarm Propagation Simulator

This paper investigates the OTN failure/alarm propagation behavior in the optical layer of optical transport network (OTN), where an OTN-based failure/alarm propagation simulator is developed with Python. By analyzing the examples given in the Huawei Optix OSN 8800/6800/3800 V100R009C10 reference book[2], this simulator is positioned as a strong tool in restoring the basic failure/alarm propagation behavior of the OTNs, where novel notations of alarm propagation are defined, including ground truth of alarm flow matrix and active alarm flow dependency graph (aAFDG). We will show that the simulator can effectively generate ground truth results that are useful to subsequent targets such as failure localization and hidden rule mining.