Tag Archives: MAC address

How to: Catalyst 9800 MAC Filtering

Matt Schmitz/ November 12, 2019

I’ve been spending a bit of time over the past few weeks building up a wireless lab. Trying to get a good understanding of how the new Catalyst 9800 wireless controller works, and how it differs from some of the previous iterations. In order to play around with the new controller, I decided to try to build a new configuration

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Port Security: Worth the effort?

Matt Schmitz/ March 14, 2017

Port Security. Always seems like one of those things covered in Cisco exams, yet how many businesses actually use it? For those that aren’t implementing it, should they? Or is it too much of a headache? So the concept of port security is fairly simple – We want to secure each individual switch port to a physical layer 2 MAC

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