("XX International Core Computer Network System Project Implementation Manual", specific operation instructions, network topology, equipment configuration and so on. In relation to network product configuration, the entire network of cisco6500H3C7506H3C3100 adopts a layered design structure, which is divided into three layers according to different functions: core layer, aggregation layer, and access layer. The core layer includes two 6509Es, which provide high-speed data exchange. The convergence layer includes five S7506s, which provide data forwarding between the access layer and the core layer, and implement policies such as access control. The access layer includes 3126 switches in each building, providing access to customer equipment.)
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