After identifying some of the challenges every network solution must address (part 1, part 2, part 3) we tried to tackle an interesting question: “how do you implement this whole spaghetti mess in a somewhat-reliable and structured way?”
The Roman Empire had an answer more than 2000 years ago: divide-and-conquer (aka “eating the elephant one bite at a time”). These days we call it layering and abstractions.
In the Need for Network Layers video I listed all the challenges we have to address, and then described how you could group them in meaningful modules (called networking layers).
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