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Python Web Development with Sanic
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Configuring IPv4 addresses and subnet masks on a router’s interface is a simple task. However, if either the IPv4 address or subnet mask is incorrectly assigned on an interface of the device, the device will not be able to communicate with others.
To illustrate this theory, the following diagram shows a computer that is unable to communicate with the router:
Figure 5.1: Small network
Considering all the devices are powered on and the appropriate cables are used for connecting each device to another, what could be the issue? As you will notice, the IPv4 addresses and subnet mask seem to be correct as the only difference between them is the IP address of the computer and the router. But is this really accurate? You can now determine if the PC and router both exist on the same logical Layer 3 network. Visually, both devices exist on the same physical network, but in the field of networking, they can belong to different...