(even if there are a large quantity of valid hosts that go unused)
I’ve been trying to understand IP addresses and subnet masks and I watched (and understood) the majority of this video https://youtu.be/s_Ntt6eTn94. This was a question I had at the end though. Is there some sort of disadvantage of having a class A subnet?
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There is just no point if you don’t need them. And given that VLANs exist there is rarely any point in having thousands and thousands of devices on the same subnet.
One of the biggest issues with using a large subnet is broadcast traffic.
On top of that, you are generally going to want to segregate hosts for either logical or security issues.
If I ever use a 10. address it will normally be a /24 or /23.
Having said that, I don’t work in big enterprise shops.
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