A three-tier scenario is deployed in large, very large and highly distributed networks. The aggregation switch or aggregation switch stack forms the connection to the superordinate core level, e.g. to a data center with a core switch. This scenario can be used in campus networks with many different buildings, for example, but also in large enterprise networks with thousands of employees in a high-rise building. In this example, the LANCOM XS-6128QF is used as the aggregation switch and the LANCOM GS-3152XP again as the access switch.
Eight aggregation switches are operated in the stack in this case, too. A total of 160 access switches can be implemented with this stack, each access switch making 48 downlink ports available. This means: up to 160 x 48 clients, i.e. 7,680, can be connected in this network. Connection to the superordinate core level takes place via dedicated uplink ports on these aggregation switches. Owing to the dedicated 4x 50G stacking ports, both non-blocking stacking with 200-Gbps port capacity and a 400-Gbps stacking capacity (full duplex) can be implemented.