The introduction of new network services, broad- band multi-media and advanced mobile communi- cations imposes high requirements on ATM net- work management. In such an environment. an essential task of ATM management is to prevent faults and to support efficient resource allocation. The idea is to specify parameters. according to which the behaviour of the network is monitored, and to perform the necessary actions with re- spect to history-based traffic information before a degradation of quality of service is recognized by users. By describing a model, including param- eters, actions. policies, and control mechanisms. we present a step towards self-regulating network management.