I recently took over support for an office that is running an old set of Cisco Aironet routers. This office has a good amount of wireless devices - at least 15-20 laptops and computers, along with Nest thermostats, carbon dioxide sensors, and more. What seems to happen is randomly a connected computer will suddenly lose it's connection. Where normally the connection will be 192.168.1.X (Their standard subnet) a computer will randomly drop and suddenly show a 192.168.0.X address, complete with 192.168.0 gateway and no internet access. After sometime the connection will re-establish.
Now I'm 99% sure this is simply the old Wi-Fi network unable to keep up with the number of wireless devices and it's dropping and re-acquiring leases. I just wanted to confirm that anyone else has seen this before. I was planning on replacing the Wi-Fi anyway, but it seems odd. In my experience, when a computer only has limited connectivity it would show something like a 169 address, or no address at all. The fact that it's suddenly coming up with a 192.168.0 address seems oddly specific.
Thanks for any input you might have.