Question about SMC Barricade SMC7404WBRA (SMC7404WBRA EU) Router

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For SMC7904WBRA :: How to use Cable Modem on ADSL router/modem

Hello, I have a SMC7904WBRA2 ADSL Modem/Router combo. Recently I changed ISPs, and now I use a cable modem. I'd like to know how do I set the combo to work as a router only, and how I configure it. If I just plug my new cable modem on the router, only one of the computers get internet access, not the others, and I don't know why. The Cable Modem is a Motorola SBV5120.

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  • Anonymous Dec 04, 2007

    upgraded WRT54G V2.0 to latest LinkSys firmware (WRYTG54V4.0_4. 21.1_US_code.bin) Troubles began.

    Could ping WAN and RF sides of Motorola SB4100, but not anything beyond that. Upgraded to Motorola SBV5120, but problem persisted. Googled dd-WRT and found that the latest Linksys firmware had some problems.

    Followed posted procedure to replace LinkSys VxWorks firmware with dd-WRT V23-SP2 firmware and problems with internet connectivity went away. Read & understand the process. It is not for the faint of heart. Be prepared to toss the box and buy another.



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Looks like your device does not support playing router for cable internet. Would recommend you get an actual router, or alternately if you have a computer with two network adaptors you could plug one into cable modem, plug other in to LAN side of router, then configure turn Windows Internet Connection service, will need to disable the DHCP service on the router. I highly recommend you get a real cable/dsl router to do this tho. Linksys 54g series has been one of my favorites. Router homepage on SMC site.

Posted on Jul 29, 2007


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Essentially what you're going to be doing is running a line from your wall to the modem. Now instead of running a line directly from the modem to the PC what you're going to be doing is I believe plugging it in to the 4th position on the back of the combo device. 1st you may have to reconfigure the device for your new ISPs information ie. DNS SUFFIX, IP ADDRESS, etc. Don't quote me on this but I believe to do that you'll have to connect the ethernet line directly from the PC to the combo device via port 1 on the device. That will enable you to configure the device as you would any other router. 

It's all a bit of a pain in the rear but it can be done. I've noticed forums around the net describing the process in further detail but without model specific information the best I can say is yes someone somewhere would know how to do it so don't let anyone especially your ISP say that it can't be done.

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For SMC7904WBRA :: How to use Cable Modem on ADSL router/modem combo?

Did you have DSL prior? if so, was the MAC address cloned to the router? You may need to check that setting, its pretty common with this type of setup

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