|Fixed LAN IP Address - Informing The Router|
Informing The Modem/RouterOnce you've set up the fixed LAN IP address in the computer, you need to let the modem/router know about it in order to the tell the modem/router not to issue the IP address to another computer.
Log into the modem/router as usual and select LAN IP Setup from the Advanced menu. Under Address Reservation, click the Add button.
Leave the Use Router as DHCP Server checkbox checked: Any time you want to add an "ad hoc" computer to your LAN, provided its TCP/IP properties are set to Obtain IP address automatically, the modem/router will oblige with an IP address when asked but will never dynamically assign 192.168.8.2 or 192.168.8.3