is the IP address that is common to all. All the devices used have the main IP address and alternative IP address as well. It is so because if one doesn't work, then the other can help. So, the IP either will be the main IP address for the extender or the alternative one. So, it is important to know about the steps to complete the Wireless Extender Setup. With admin setup, you can configure your network. #wirelesssetup #wirelessextender