Network configuration tables are great building blocks for your network documentation, but they
are not sufficient for getting a clear picture of how devices connect and interact within the network.
This is where the network topology diagram comes in. Simply put, a network topology diagram
is nothing more than a graphical representation of the network, allowing you to easily see
how components in the network are connected and how they interact. Arguably, it is the most
heavily utilized piece of documentation used in network troubleshooting and maintenance.