[This page is outdated. See this post for information ]
For completeness, and because someone asked me, here is the way to configure the BBox-2 to be used as a dumb modem, with a router behind it. It is certainly nothing I found out myself. Credits to original posters are below.
- Connect to your BBox-2 through your browser.
- Go to Advanced Settings and then select Network Interfaces
- Select Wan PPPoE, then Disable, and then OK
- Then, Settings > Underlying Connection, select Lan Bridge
Step 4 is optional. You have two options here.
- If you perform step 4, your BBox becomes a dumb modem. LAN1 becomes a raw ethernet socket. Your router establishes the PPoE session. The side effect is that the BBox loses its local IP address. You will no more be able to access it through the LAN. If you want to disable WIFI, do it before performing step 4. Your router should be connected to the LAN1 port on the BBox.
- If you do not perform step 4, you BBox does not establish the PPoE session (i.e. the outgoing Internet connection) but remains active on the local LAN. It keeps its local IP address, keeps WIFI and DHCP active, etc. In that case, review the settings so they do not conflict with the ones from your router. For example, you may wish to avoid having two DHCP servers on the LAN. Just disable DHCP on the BBox. You also do not want the router and the BBox to have the same IP address.
Option 2 is the most flexible, but you should know what you are doing and adjust the settings both on the BBox and the router so they don’t conflict.
One of the things to try out would be to set up two WLANs, one through the router and one through the BBox. One WLAN could be the one for your family. The other could be one for your visitors at your home. In this case, you would not be forced to give the password for the family WLAN to your visitors. Routing and firewall rules could be set up to have more restrictive rules on your “public” WIFI than on the family one. That will keep you busy on a rainy Sunday.