This is a basic network diagram. A network diagram is a schematic or map of your current network that shows the nodes and connections. The relationships between your elements and devices can be mapped out using network diagrams, which can also be used to show alternate network topologies. There are many different sizes and shapes of network diagrams, but they can be categorized into two categories: logical network diagrams and physical network diagrams. Now it is easy to create a network diagram with EdrawMax.