Real-time cell performance information for each of cells in a mobile communication network, referred to herein as network topology information, is produced using IP addresses of data sessions in the cells, measured performance of the data sessions, and IP address to cell identifier mappings. The network topology information may be used to determine, in real time, a level of monitoring for each of the cells. The network topology information may be used to determine, in real time, performance of video streams in each cell. The network topology information may be used to determine, in real time, that a cell is experiencing a performance anomaly. Determinations made using the network topology information may be used to configure, maintain, and optimize the performance of the mobile communication network.