Typically, the diagram gives a bird’s eye view of the network in its physical space, like a floorplan. Physical network diagramsĪ physical network diagram shows the actual physical arrangement of the components that make up the network, including cables and hardware. Level 2 shows the data links between adjacent nodes, while level 1 shows the purely physical layout. Also known as the “network layer,” 元 is an abstraction layer that deals with packet forwarding through intermediate routers. In the Open Systems Interconnection (OSI) model, logical network diagrams correlate with the information contained in layer 3 (元).
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