Question: What is 10.1.1.1 IP address?
10.1.1.1 is part of 10.0.0.0/8 network, Class A private IP address block (not routable on Internet) that is commonly used to set up private home network.
It is also used as factory default IP for router, access point or other network devices. Usually you can access the router management page by pointing to this IP by using web browser. Read the router manual to learn more on how to configure router.
Check this wireless router or wired network router configuration article if you have configuration problem.