Devices and method for controlling network routing configurations

A hardware controller for controlling network routing configurations in a network, the hardware controller being configured to:

• obtain a predicted traffic matrix and a plurality of traffic matrices;
• determine, from a plurality of clusters, the plurality of clusters being arranged in a hierarchical structure over the predicted traffic matrix and the plurality of traffic matrices, a first cluster allocated to a lower hierarchy level that contains the predicted traffic matrix, wherein
• each of the plurality of clusters is associated with a routing configuration, the first cluster is associated with a first routing configuration, and the plurality of clusters are allocated to at least two different hierarchy levels, a cluster allocated to a higher hierarchy level including multiple adjacent clusters allocated to a hierarchy level below;
• select, from the plurality of clusters, a second cluster allocated to the higher hierarchy level that includes at least the first cluster and a third cluster allocated to the lower hierarchy level that contains a current traffic matrix;
• determine a second routing configuration associated with the second cluster;
• and
• activate the second routing configuration as a network routing configuration.