LOBSTER: a European platform for passive network traffic monitoring
Proceedings of the 4th International Conference on Testbeds and research infrastructures for the development of networks & communities
ACM SIGMOBILE Mobile Computing and Communications Review
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Bandwidth usage monitoring is important for network troubleshooting and planning. Traditionally, used bandwidth is computed from router interface byte counters read by SNMP. This method only allows to check long-term averages of the total used bandwidth without information about short-term dynamics and without knowledge of what applications are consuming most bandwidth. We describe the architecture of a novel passive bandwidth usage monitoring application. This application uses packet capture and advanced processing to continuously provide real-time information about bandwidth usage. The produced characteristics include information about shor-tterm peaks and about the percentage of bandwidth used by different protocols in different layers of the OSI model hierarchy, including detection of application protocols that use dynamic ports.