Topology

ACOnet Backbone Topology Points of Presence Class of Service BGP Communities International Uplinks Participant Connection GovIX & GovDNS Dormitories GÉANT

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last change: April 21, 2024

ACOnet topology from mid-2023 (with a second location in Eisenstadt and a third location in Vienna)

All over Austria, ACOnet in co-operation with some major participants entertains Points of Presence (PoPs). The routers at our PoPs are interconnected via a physical network specifically dedicated to ACOnet. These routers connect the participants' routers.

Access PoPs: The locations Krems, St. Poelten, St. Johann/Pongau, Bregenz, Dornbirn, Leoben, Wiener Neustadt, Eisenstadt 1 and Eisenstadt 2 are each connected to their two nearest PoPs with 20 Gbps links. The Vienna 10 location is connected to the PoPs Vienna 1 and Vienna 21 with 40 Gbps each.
Backbone PoPs: To increase availability, two interconnected PoPs are being entertained at each location in Linz, Salzburg, Innsbruck, Klagenfurt, and Graz. Each of these two PoPs is linked to one of the two Viennese Core PoPs via geographically separated and redundant ways. This ensures that even in case of a possible interruption a Viennese core PoP can still be reached directly. In addition, each of these cities has a direct connection to Salzburg. This improves the load distribution in case that the backup upstream in Salzburg gets active.
Core PoPs: The routers at the core PoPs Vienna 1 and Vienna 21 are interconnected by two redundant fiber links with 200 Gbps in total. All other PoPs are connected to these two core routers, which also provide international connectivity for ACOnet's participants.

Additionally, since 2015 we operate the so-called "LWL-Ring WienMitte/WienWest", a redundant fiber ring interconnecting several major Viennese cultural institutions. For more information see Community.