Combined Wi-Fi Network for Home and Office– Wired Backbone
If you are adding a Wi-Fi network onto an existing wired network, this is probably how your combined wireless network will end up looking in a home or home office. The biggest difference between this configuration and a wireless backbone network is that a wired router or hub is handling the network and Internet-addressing issues instead of the wireless gateway.
When you add a Wi-Fi network to an existing wired network, make sure you turn off NAT Routing and DHCP in the wireless gateways or access points. For further information see your manufacturer's instructions.