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How to set up modem router combo?

Discussion in 'Networking' started by sargaxon, Jun 22, 2019.

  1. sargaxon

    sargaxon Thread Starter

    Jun 22, 2019
    So I had an old modem lying around from previous ISP which I managed to turn into a router 2 years back as an wifi access point and connected it into the new ISP modem and everything worked perfectly, had 2 parts of the house full wifi coverage.

    Recently there's been a storm and the power went out, had to restart the modem, after that the router wasn't working anymore. The ethernet cables are connected and all the infrastructure is as before. Had to do a full factory reset on the router in order to be able to log into it and configure it again.

    Configured wifi, set IP for the router ( on the modem), disabled NAT and DHCP on the router (usually after disabling NAT one can't log into it again, have to do a full factory reset) and I can see the wifi, can connect to it, but no internet access. It's indefinitely obtaining IP, so there must be something wrong with the config. Am I missing something?

    Thanks in advance!
  2. lunarlander


    Sep 21, 2007
    To test if the modem has access to the internet, try 'ping' . ( Google'server) If replies are received then the modem is able to connect out.

    Then try 'ping google.com' . And if replies come back, then it is able to translate the 'google.com' address into an ip address.

    If the second test fails. To right click on the network icon in the systray and choose 'Open network & internet settings' , Then choose Change adapter option'. Right click on the adapter > Properties > TCP v4 > Properties button. Set the DNS addresses to "" and "" which are Google's DNS servers. In most cases that will work, and will enable you to surf.
    Last edited: Jun 23, 2019
  3. Couriant

    Couriant Trusted Advisor

    Mar 26, 2002
    First Name:
    you may be conflicting with your current modem. Do you know what IP range that is?
  4. Couriant

    Couriant Trusted Advisor

    Mar 26, 2002
    First Name:
    Also, this is from a former moderator:

    Connecting two (or more) SOHO broadband routers together.

    Note: The "primary" router can be an actual router, a software gateway like Microsoft Internet Connection Sharing, or a server connection that has the capability to supply more than one IP address using DHCP server capability. No changes are made to the primary "router" configuration.

    Configure the IP address of the secondary router(s) to be in the same subnet as the primary router, but out of the range of the DHCP server in the primary router. For instance DHCP server addresses through, I'd assign the secondary router as it's IP address, for another router, etc.

    Note: Do this first, as you will have to reboot the computer to connect to the router again for the remaining changes.

    Disable the DHCP server in the secondary router.

    Setup the wireless section just the way you would if it was the primary router, channels, encryption, etc. Note that you should use the same SSID and encryption key for the secondary router but a non-conflicting channel. I recommend channels 1, 6, or 11 for use for the best results.

    Connect from the primary router's LAN port to one of the LAN ports on the secondary router. If there is no uplink port and neither of the routers have auto-sensing ports, use a cross-over cable. Leave the WAN port unconnected!

    This procedure bypasses the routing function (NAT layer) and configures the router as a switch (or wireless access point for wireless routers).

    For reference, here's a link to a Typical example config using a Netgear router
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