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bmwr75's avatar
bmwr75
Star
Dec 14, 2021
Solved

Adtran SDX 621 fiber modem and Netgear Orbi RBR750 won't communicate

Recently purchased the Netgear Orbi RBK753S High-Performance Whole Home Mesh WiFi System.  Cannot get it to work when connected directly via ethernet to my Adtran SDX 621 fiber modem.   

 

If I connect the fiber modem to the wifi router that came with the Adtran modem from my ISP and then to the Orbi router via a LAN ethernet connection, it works fine (wifi radio turned off on the ISP router). 

 

BUT, am unable to configure remote access to my NAS file server when going through the ISP provided wifi router because it cannot be put in bridged mode (locked out of that function in the Admin menu).

 

Any suggestion on what to try to eliminate the need for the ISP provided wifi router?

  • Netgear has set up a community forum specifically for the Orbi AX (WiFi 6) products. Most of the people who watch that forum are more likely to have experience with Orbi AX and know how to work it better than those of us who follow this router forum. Might be more likely to find someone who has a solution if the question is posted there:
    https://community.netgear.com/t5/Orbi-AX/bd-p/en-home-orbi-ax

     

    Be sure to restart your network in this sequence:
    Turn off and unplug modem.
    Turn off router and computers.
    Plug in and turn on modem. Wait 2 minutes for it to connect.
    Turn on the router and wait 2 minutes for it to connect.
    Turn on computers and rest of network.


    Please use this link to the main forum product list to review and choose where to make your posts. 
    https://community.netgear.com/t5/NETGEAR-Forum/ct-p/en-netgear


    Thank you

     

10 Replies

  • Netgear has set up a community forum specifically for the Orbi AX (WiFi 6) products. Most of the people who watch that forum are more likely to have experience with Orbi AX and know how to work it better than those of us who follow this router forum. Might be more likely to find someone who has a solution if the question is posted there:
    https://community.netgear.com/t5/Orbi-AX/bd-p/en-home-orbi-ax

     

    Be sure to restart your network in this sequence:
    Turn off and unplug modem.
    Turn off router and computers.
    Plug in and turn on modem. Wait 2 minutes for it to connect.
    Turn on the router and wait 2 minutes for it to connect.
    Turn on computers and rest of network.


    Please use this link to the main forum product list to review and choose where to make your posts. 
    https://community.netgear.com/t5/NETGEAR-Forum/ct-p/en-netgear


    Thank you

     

    • bmwr75's avatar
      bmwr75
      Star

      Sorry, didn't realize which sub-forum this post was placed in.  Have reposted in the correct sub-forum.  Please delete this thread.  Thanks.


      • bmwr75 wrote:

        Sorry, didn't realize which sub-forum this post was placed in.  Have reposted in the correct sub-forum.  Please delete this thread.  Thanks.


        It doesn't really matter. Your question is generic  – it is really about connecting any router to the Adtran SDX 621 – and could have been answered here instead you were given the bum's rush, as we say here in the UK.

         

        Strange that the person who told you to "go away" didn't have the courtesy to help when you did repeat your message.

         

        Fiber Modem and Orbi connectivity problem - NETGEAR Communities

         

        The key bit of your first message is the reference to the Adtran SDX 621.

         

        It seems that you are piling router in router. Never a good idea.

         

        A lot of people use an Orbi as a Wireless Access Point.

         

        Compare the router features of the Adtran SDX 621 with those on the Orbi.

         

        Then decide what to do.


        What is Double NAT? | Answer | NETGEAR Support

         

        and

         

        How to fix issues with Double NAT | Answer | NETGEAR Support

         

         

         

         

         

  • bmwr75 

    Your ONT This should be your device. If not, search for it on the site.

     

    You have a cable that enters your property (drop cable). The drop cable provides the optical signal which the modem (Optical Network Terminal) will transform into an electrical signal and pass to the router (via the Ethernet cable).

     

    Has the service worked prior to inserting the RBR750?

     

    You can always open a case with Adtran: openasupportcase 

     

     

    • CrimpOn's avatar
      CrimpOn
      Guru

      Retsehc wrote:

      Has the service worked prior to inserting the RBR750?

       

      You can always open a case with Adtran: openasupportcase 


      See the original post. The goal is to remove the ISP router in order to forward ports to a NAS.  The RBR750 worked, but could not forward ports because of the Double NAT situation.  Would be interesting to see if Adtran responds to a non-customer.  My guess is that the ISP is the actual 'customer' who could file a support case. Certainly can't hurt to try..

      • bmwr75's avatar
        bmwr75
        Star

        My ISP did an update on their fiber modem ONT and the Netgear Orbi started working as it should after a restart.