How DHCP Works

It’s the hidden staple of modern day life.

A device connects wirelessly/plugs into a network and after a few minutes everything just… works (usually). You can browse the internet just fine and its like nothing much was done at all.

But how exactly does that work? What happened there behind the scenes? One aspect of the invisible process is the allocation of an IP address to your device. This post will take a brief look at how the DHCP process assigns an IP to devices on the network.

Let’s begin.

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EIGRP Authentication Configuration Example

One of the ways to secure your EIGRP configuration is using Authentication.

Let’s imagine a scenario where someone wants to sabotage the routes in your network to replace them with their own, or even to remove them entirely. Without any EIGRP Authentication, they are free to do so.

Let’s see how it works:

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