If you have just bought your D-Link DIR-505l router, consider the steps that are given below to do D-Link DIR-505l router setup.
Once you are on the D-Link router's web-based setup page, enter the admin password in the password field. If you have changed the login credentials, let the password field be blank. Click on the Log In button. Select the Setup tab and click LAN Setup. Choose the Access Point or Router mode from the drop-down list. You can select Access Point mode if you want to use the router to connect to an existing network. Choose Router mode to create a private wireless network.
You have now successfully perform the D-Link DIR-505l router setup.