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oceanwolf's avatar
oceanwolf
Aspirant
Jan 21, 2022
Solved

LM1200 wan connection not working

I want to use LM1200 as a failover device in the North Sierras where when we lose power, the broadband goes out in 20 mins. I have the latest firmware and if I connect only LTE modem it works fine. For some reason when I connect WAN port the modem gets the IP address, but does not route data through. See the picture that you can see the modem has the IP address (it also picks IP address if I connect to my Netgear Cable Modem) but it also shows no data flow. What am I doing wrong?

  • Thank you John.

     

    I switched to Router mode and I was able get the traffic through. That caused me another problem since the port numbers using public IP was not translated to local IP.

     

    I switched to Bridge mode again and modem stayed connected and everything works great.

    Thanks for all the help, now I need to find external antennas to improve the LTE reception.

18 Replies

  • JohnPeng's avatar
    JohnPeng
    NETGEAR Expert

    Please check some basic things first.

     

    1. Your FW is the latest: 20.06.09.00

    2. The ethernet cable connecting to your home cable modem is connected to the WAN port of LM1200. 

    3. Pleae check the failover settings is set to Auto.

     

    If all are set correctly, please do a factory reset and try again. If possible, try a new ethernet cable.

     

    Thanks

     

     

    • oceanwolf's avatar
      oceanwolf
      Aspirant

      Hi John,

       

      1. Yes, the App Version is NTG9X07C 20.06 09.00

      2. ethernet cable is connected to the WAN port. If you look at the picture that I attached, it shows that the port received an IP address from my router. When I connect LM1200 to the Cable Modem it also gets a IPv6 address but same thing happens, no connection (the x mark). 

      3. Failover is on Auto.

      4. I tried multiple cables, no change.

      It just does not want to pass traffic on the broadband side. LTE works fine.

      • JohnPeng's avatar
        JohnPeng
        NETGEAR Expert

        Please connect the LM1200 to your home cable modem and help to capture a mdoel.json file following the steps below. You can send the log to me using private message. 

         

        - Logon to the webui (http://192.168.5.1 ) as an administrator
        - Navigate to URL http://192.168.5.1/model.json via the same browser window
        - Capture the results (by selecting all + copy) and send it back

         

        If you haven't done a factory reset, please give it a try to see whether it makes any differences.

         

        Thanks

  • Thank you John.

     

    I switched to Router mode and I was able get the traffic through. That caused me another problem since the port numbers using public IP was not translated to local IP.

     

    I switched to Bridge mode again and modem stayed connected and everything works great.

    Thanks for all the help, now I need to find external antennas to improve the LTE reception.

    • exxchef's avatar
      exxchef
      Aspirant

      I have run the firmware update, and both ports appear to be live. I want the device's cellular as a failover only.  I have connected from arris modem to nighthawk rax80 router. What is the best setting for successful failover? Bridge, Ping frequency, and router setting recommendations? Etc.

      • JohnPeng's avatar
        JohnPeng
        NETGEAR Expert

        exxchef wrote:

        I have run the firmware update, and both ports appear to be live. I want the device's cellular as a failover only.  I have connected from arris modem to nighthawk rax80 router. What is the best setting for successful failover? Bridge, Ping frequency, and router setting recommendations? Etc.


        Depending on your purpose, if you plans to use LM1200's failover as backup for all your network, it is better to set up LM1200 the following way.

         

        Arris Modem -> LM1200 WAN Port - LM1200 LAN Port -> RAX80.

         

        When Arris fails, LM1200 can switch to 4G network to make sure RAX80 can have data connections.

         

        Thanks

        John

  • So I have a Sim card in The Lm1200 and I get connection but nothing can connect to it wirelessly and I have a router connected to it just wondering if there's a fix?
    • JohnPeng's avatar
      JohnPeng
      NETGEAR Expert

      Mistercod wrote:
      So I have a Sim card in The Lm1200 and I get connection but nothing can connect to it wirelessly and I have a router connected to it just wondering if there's a fix?

      LM1200 is just a wireless modem. It is not a WiFi router. You need to connect a WiFi router to LM1200 LAN port in order to connect your WiFi clients.

       

      John