Nowadays there is no need to have a single SSID for all the devices that you have hooked to your router. There are a lot of routers that can be set to multiple SSID for multiple devices. By the way, a separate SSID is considered for the guests and visitors at your house, so that others cannot access your WIFI network.
if you want to more information you can visit here: https://mydlinklogin.com/
