The present invention discloses a node selection procedure. A load is obtained, having a priority level. The first step selects a node from a first subset of available nodes. If the node is capable of accepting the load, i.e. if the congestion level is low enough to allow a load of the present priority level, the node is selected as a destination node. If the congestion level of the node is too high to allow the node to accept the load, the second step is performed. The second step creates a second subset of nodes, all capable of accepting the load. One of the nodes is then selected as destination node. This second selected node is guaranteed to be able to accept the load. The load is then directed to the selected destination node. If the second subset is empty, the load has to be discarded.