Abstract: A method for operating a network node of a communication network is provided, the network node having a routing method. Before any configuration of the network node by a control device, a minimum waiting time of the network node for the calculation of routing paths is increased after a configuration change. Configuration data is then read into the network node, whereafter said minimum waiting time is reset to a lower value.

Abstract: In a dryer section comprised of several drying groups, and particularly an alternating single tier dryer section, one of the bottom felted drying groups is arranged with respect to the paper machine floor so at least the rotating shafts at the axis of the drying cylinders of the one drying group are below the paper machine floor. The guide rolls of the bottom felted drying group and of an adjacent top felted drying group may be in one horizontal shaft plane above the paper machine floor. An intermediate floor is provided beneath the main machine floor and the bottom of the basement beneath the one drying group. Easier access to the drying cylinders and elements of both top felted and bottom felted drying groups is obtained.