Use modem/router combo as router only


  1. Posts : 35
    Windows 10 Pro
       #1

    Use modem/router combo as router only


    I purchased an Arris SURFboard SBG6700-AC (modem/wifi combo) several years ago. I moved to another city with a different ISP. The cable guy could not get this to communicate with his cable system. There is an 80-year-old woman (neighbor) who has internet but no wifi. I bought her a tablet for Christmas that needs a wifi connection. How would I go about connecting this to her cable modem for the sole purpose of her to have wifi in her home? It seems to me this should be doable. Thank you for your help. .
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  2. Samuria's Avatar
    Posts : 6,559
    windows 10
       #2

    Does the cable modem issue dhcp in the 192.168 range or a internet ip? basiclay you connect the router to the lan port on the modem and connect to lane port on the router the router must be set in the same ip range as the modem output and dhcp turned off on the router.
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  3. NavyLCDR's Avatar
    Posts : 16,583
    Windows 11 Pro
       #3

    Marshall Moore said:
    I purchased an Arris SURFboard SBG6700-AC (modem/wifi combo) several years ago. I moved to another city with a different ISP. The cable guy could not get this to communicate with his cable system. There is an 80-year-old woman (neighbor) who has internet but no wifi. I bought her a tablet for Christmas that needs a wifi connection. How would I go about connecting this to her cable modem for the sole purpose of her to have wifi in her home? It seems to me this should be doable. Thank you for your help. .
    You more than likely can't. The input side of the modem/router combination is going to be exclusively the modem.

    Also trying to get your modem/router working on the cable system, did the technician press the reset button on your modem/router? I had an issue with my daughter's cable internet where the modem just would not connect. Finally after about 15 minutes, I just pressed the reset button on the modem/router to clear all the old settings out from the old ISP and it just magically connected to the new ISP!
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  4. Posts : 35
    Windows 10 Pro
    Thread Starter
       #4

    I think you are right


    I have extensively googled this subject. The only thing I can find is how to disable wifi but, not the other way around. I have a wireless router I do not use because the modem from my ISP has built-in wifi. I thought I would be better off trying to use this device if possible and keep my wifi router in my possession. I figured I would more likely need it in the future. I may just buy her a used one off eBay. They have several in the 30 dollar range. I have a lot more invested in the one I have. Thank you for your response.

    - - - Updated - - -

    It was 2 years ago. I am going to just connect my router temporarily and order her a used one from eBay. Thank you for your response.
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  5. Railtech's Avatar
    Posts : 491
    Win 10 Pro x64 versions
       #5

    You can get a router to work with a cable modem, but getting 2 cable modem to work together is a non starter. Pickup a WiFi router to connect to the modem and you will have what you are looking for.
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  6. flhthemi's Avatar
    Posts : 250
    Windows 10 Pro
       #6

    I see some good deals on older models of routers on Newegg. Some are brand new and some are refurbs...in the 30 dollar range, some less.

    Like this LINK
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  7. Berton's Avatar
    Posts : 11,980
    Win10 Pro Versions 2004 and 2009/20H2, Win10 Pro IP_Dev, Win10 Home 1909
       #7

    I've got a couple of spare Routers and will be checking about using one as a Switch to gain more ports.
    use a second router as a switch at DuckDuckGo
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  8. Posts : 35
    Windows 10 Pro
    Thread Starter
       #8

    I never thought of that


    Your link to DuckDuckGo indicates it can be done. I have no idea that could be done. Good luck!
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