Let's say a person has a wireless router that has 4 ethernet LAN ports on the back of the router. There are 4 devices connected to the LAN ports on the back of the router and therefore all the ports are used. There may or may not be devices connected wirelessly. The wireless router is acting as a DHCP server (assigning IP addresses).
Now that person has a need for more ports to connected wired devices. A switch (8 port for example) is connected to one of the LAN ports on the back of the wireless router and some or all of the devices that were connected to the back of the wireless router are now connected to the switch. There are now enough ports for all wired devices.
Here is my question:
How does the wireless router assign IP addresses through the single port that connects the wireless router to the switch, and then to the devices connected to the switch. I'm under the assumption that each port on the back of the wireless router is only capable of one IP address associated with it (which is assigned by the DHCP function of the router).
Any clarification and knowledge would be appreciate. Thanks.