A method includes identifying a plurality of network components in a network topology of a data transmission network, identifying data transmission performance patterns based on at least one key performance indicator (KPI) for each of the plurality of network components, identifying at least one data transmission issue in the network, and identifying a model degraded performance pattern associated with the at least one data transmission issue. The method may also include matching the model degraded performance pattern to the data transmission performance patterns to form matched performance patterns, and identifying a root-cause component from the network components based on the matched performance pattern.