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Routing - The Basis of Modern Networks

Simply put, routing is the method used to transmit data from one machine and receive it on a remote network. Using a suite of protocols developed by engineers from the IEEE and utilising both OSI L2 and L3 communication, we can efficiently send information to any compatible remote network. This functionality forms the backbone of the internet. The use of these protocols also keeps everything interoperable and allows us to build networks with equipment from different vendors.

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Practical Uses

Understanding how devices use the IEEE protocols is important for building good networks. I've gained a lot of experience in things like DHCP, DNS, VLANs, Static Routing, LAGs and many more from practical experience, training and research.

Networks are like onions

No not because they make you cry, but because they are built on layers. Starting with the basic physical connection between equipment. The OSI model shown here is great for breaking down problems and diagnosing networks at all levels.

Protocols are built on top of other protocols until you get to the application you need, such as a website. Its important to break down the network into these layers as it helps us isolate problems and troubleshoot quickly and efficiently. Viewing a network in this way also lets us make good decisions in terms of architecture and security, at each layer.

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