It isn't constantly important to know your router's IP address. Devices can detect the router by its name (SSID) whenever those devices have to go online. To connect to a Linksys IP address, open a web browser, move to the address bar, and type http://192.168.1.1/ in it. Then, log in to the administrator console of the router and access its configuration window. If the router is not using the 192.168.1.1 address, it could be 192.168.0.1, 192.168.2.1, or something entirely different. If you can't connect to IP 192.168.1.1, there are a few things you can try to get reconnected. Ensure that you are connected to the same network that the router is on. The issue may lie with the router itself, so you can try to reset your router.