@Brain21 To partially answer my own question: Yes, the XE75 acts like a layer 2 bridge between the WiFi and the Ethernet LAN. All devices - Wifi and wired - are on the same subnet. So I need to...

Here is the current setup: [cable modem] --- [Cisco Firewall] --- [XE75] --- [ethernet switch] On the main floor of my house it's all wifi. Everything connects to the XE75 fine. In the basement...