This video shows you how to change the default LAN IP address for a LAN if the new IP address conflicts with an existing IP address for another LAN in the router. The router used here has  default LAN settings.

In our example we wish to change LAN1 subnet to 192.168.2.1.  By default LAN2 uses 192.168.2.1 so we need to change LAN2 settings first before we can change LAN1.  In the process we need to enable VLANS. Make the changes and then disable VLANs when finished.

Click here to watch this video.