NETWORK ROUTE SELECTION

A method, system and computer program for determining a network route from a source device to a target device through a computer network is presented. The source device is connected to the target device via a plurality of network routes each including at least one route section. At least one of the route sections is operated by at least two network operators. The source device has access to network operator priority lists for at least a subset of the route sections. Each network operator priority list specifies quality-of service guarantees of the network operator for an ordered number of network condition sets. For each route section considered a most suitable quality-of-service guarantee among determined quality of service-guarantees determined on the basis of the network operator priority lists, is selected. A network route from the plurality of network routes between the source device to the target device on the basis of the determined quality-of-service guarantee for the route sections is determined.