Abstract: The invention relates to a method and a software product for selecting an optimal path in an ATM network. The proposed method of optimal path selection is applicable to quite a wide class of ATM networks or parts thereof which comprise a plurality of links satisfying the condition that each of the mandatory parameters CDV, MaxCTD and AW has one value symmetric to both directions of a link. Such a plurality of links and value of its parameters may, for example, be obtained after applying a GCAC algorithm to the initial network description, and is represented in the form of a network database.

Abstract: A method for utilizing shared resources in a computerized system, where commands are processed by a processor and executed by one or more of the shared resources, the method comprises steps: a) deriving, from each of the commands, subcommands respectively related to the one or more shared resources, b) assigning priorities to the subcommands, c) forwarding the subcommands to one or more queues of the respective one or more shared resources, so that each of the queues comprises the subcommands related to a particular shared resource. Each of the shared resources is thereby able to execute the subcommands from the queues in the asynchronous manner and according to their priorities.