The presentation will describe the status of the network infrastructure in Chile, with emphasis in La Serena – Santiago path, the first nx100G DWDM long haul segment – 700Km – already working. The system was established over an owned pair of dark fibre together with a coherent flexigrid scalable optical solution. The same technology was extended from the LSST/AURA summit to La Serena – an 80kms path. As well as to describe the plan to extend this infrastructure to the south and the north, to connect the Observatories not only in La Serena but also all along the fiber path, including Antofagasta, Atacama and other locations. Showing also how this national connectivity is aligned with intercontinental projects.