The Topology Management Tool (ToMaTo) is a topology-centric network testbed. ToMaTo has been developed in the context of the German-Lab research project that has been funded by the German Ministry of Education and Research (BMBF). NorNet is now supporting the ToMaTo project by hosting a ToMaTo research node at the Simula Research Laboratory. In exchange, the ToMaTo project is soon going to host a NorNet Core site at the Technische Universität Kaiserslautern in Kaiserslautern, Rheinland-Pfalz/Germany.