The only thing I found about bridging in the modem software was under wi-if-bridge.
That's not the same thing, but don't despair!
@Stanley71, in case you are ultimately unable to get your modem into bridge mode, I thought you might go this route:
On the Comporium site, there's a page ==
Here <<== where it is asked
"Can I Use My Wireless Router Instead of the router Comporium Supplied?".
Their answer:
"If you would like to use a personal wireless router instead of the router that is built into your Arris DG860, Arris DG950, or the Arris DG2470, call into tech support so they can properly bridge your modem. Before you call, ensure that you have an Ethernet cable connected into the bottom left-hand side port of the Arris modem and the other end of the Ethernet cable is plugged into the internet port on your wireless router."
@Stanley71, If you are paying a monthly (lease) fee for that modem/router you have now, I'd call them and ask for a free upgrade to one of the Arris models that can be bridged and they said they would do it for you. I have heard of Arris (formerly made by Motorola) and have configured a few versions that AT&T used for ADSL & uVerse around here. I am not familiar with the VisionNet m505n and looking at its
online manual it is not very apparent that it can be placed into 'bridge mode' as we mean it. The M505 (no 'n' suffix)
does mention it ==>>
here.
And BTW, that section you found in wi-fi regarding bridging is NOT the same thing, I know it's confusing. That's a mode in which 2 units can hook up wirelessly like WDS (Wireless Distribution Service). We want to configure the modem to be 'dumb' or in 'bridge mode' and simply make the connection to the Internet and let your router do just that...the routing, port forwarding (God forbid), VPN, etc.