This paper introduces the SLAmeter network metering tool, which constitutes an alternative solution to the network traffic monitoring tools based on the IPFIX protocol. The main purpose of the SLAmeter is to offer a reliable possibility to track and fulfill the conditions specified in the Service Level Agreement subscribed between the subscriber and provider. SLAmeter was designed with the extension of the BasicMeter tool and consists of several components on different layers.

This paper deals with the activities of the MONICA research group of the Computer Networks Laboratory at the Technical University of Košice in Slovakia. MONICA stands for the Monitoring and Optimization of Network Infrastructures, Communications and Applications. Our main areas of interest are related to development of the BasicMeter tool built in conformity with the IPFIX architecture. In this paper we give an overview of our solution and proposal of several enhancements over the scope of IPFIX, such as time synchronization for the One-Way Delay measurements, the protocol for direct communication with the analyzing application, the centralized management of the monitoring platform, and support for real-time monitoring.

Adaptive sampling using a neural network and a fuzzy regulator is described as applied to computer network traffics. The objective of this approach is to maximally reduce the amount of data to be processed with preservation of acceptable measurement accuracy. The results of experimental verification of sampling efficiency are also presented that are based on the traffic data archive of a real computer network.

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