Abstract: A system has a number of managing systems managing a number of managed systems including a number of managed objects of one or more different types representing resources. The managed objects are arranged in a management information tree structure. Type data on managed objects is stored and algorithms are used to provide information on mapping between managed objects and resources and/or information about sub-trees of the naming tree.

Abstract: Management operations can be sent from a managing system to a number of managed systems over a management interface. Redundancy is provided through replicating a management operation in a first of managed systems and sending the operation to at least one further managed system. A method of replicating management operations is also provided according to which instance operations that correspond to a management operation are established. The method further includes, for each instance operation, examining if any replication conditions are given, and if such are fulfilled, replicating the operation and invoking it in a redundant system.