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Connecting WRT160N v2 wireless router to Netgear DM111PSP router/modem

Discussion in 'Networking' started by jillnova, Oct 18, 2012.

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  1. jillnova

    jillnova Thread Starter

    Joined:
    Oct 18, 2012
    Messages:
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    I have Qwest/CenturyLink DSL, and recently replaced the Actiontec M1000 modem which crapped out after 5 years of service. Replaced it with a Netgear DM111PSP v2 router/modem. Now I cannot get either of my two routers, the Linksys WRT54G or WRT160N V2 to broadcast wireless internet. I've spent the most time on the WRT160N. It will broadcast a wireless signal, but devices that attempt to connect to the internet time out while "obtaining IP address". BTW, I just happen to have two wireless routers on hand, I only need one to work.

    I can get internet through the hard wire connection. I have the Netgear modem hooked up to the "internet" port of the WRT160N router, and the computer is connected to one of the four ethernet ports on the back of the router. I can access both router and modem setup pages using this setup. The Netgear modem is set up for DHCP server, PPPoA encapsulation, and gets its DNS address dynamically from the ISP. The WRT160N is also set up for automatic DHCP configuration. These are the settings given by running each set up wizard, and this has set me up for some DHCP conflicts.

    I think that setting up a dual modem/router in transparent bridging mode (PPPoE) in theory turns off the DHCP, allowing the WRT160N to handle DHCP, but I have no luck even getting my hard-wired internet connection to work if I switch from PPPoA to PPPoE mode. Even if I cut the WRT160N out of the loop and connect the computer direct to the DM111PSP. No internet, no nothing.

    The Netgear modem has a setting allowing the user to turn off the router part and just use it as a modem, but as soon as I select that option, I lose the ability to communicate with the router, and my hard wired internet connection went dead. So I figured that was just a red herring.

    I tried keeping DHCP enabled for both devices, but restricting the issued IP address ranges for each device (router and modem) so that they didn't overlap. No luck there either. I've made sure the IP address assigned to the WRT160N router is not within the IP address range assigned by the Netgear modem.

    Lately I tried to set the WRT160N to a static IP address, using it just to broadcast wireless signal and not assign IP addresses (letting the Netgear modem handle that). I set the internet IP address to 192.168.0.99 (to connect to the modem), subnet mask to 255.255.255.0, and set the gateway address to the IP address of the Netgear modem (192.168.0.1). Unfortunately, I got stuck because I don't know any of the DNS IP addresses my ISP uses, so I was prevented from completing this attempt. Which is too bad, because I think this would have fixed the problem with the duplicate DHCP management by both router and modem.

    Turned off the firewall at various points while I tried these efforts, it doesn't seem to make a difference. Starting to wish I had just bought a combo modem/wireless router and I would have had wireless internet in the house weeks ago. Is there anything you can think of to salvage this combination of router, ISP and modem???
     
  2. etaf

    etaf Moderator

    Joined:
    Oct 2, 2003
    Messages:
    64,847
    First Name:
    Wayne
    ifthis is a router then you need to connect the other two routers using their LAN inputs NOT the WAN/internet - unless you set the DM111PSP to bridge mode
    you may have already covered the below - but check
    see here
    ------------------------------------------------------------------------

    Connecting two (or more) SOHO broadband routers together

    Connecting two (or more) SOHO broadband routers together
    From a John Will Post :)

    http://library.techguy.org/wiki/Connecting_two_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 192.168.0.2 through 192.168.0.100, I'd assign the secondary router 192.168.0.254 as it's IP address, 192.168.0.253 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.

    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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