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jschwed's avatar
jschwed
Aspirant
Feb 19, 2023
Solved

RBR50 - RBR20 and IP Addresses

Hi.  I have an RBR50 with 2 satellites and an RBR20.  After switching to Fiber Internet it seems like my Orib and all devices switched to 10.0.0.1.  Everything works fine but it seems like by RBR20 has an IP of 172.xx.xx.x and the devices attached to it show the same 172 numbers.  


When I go to Orbilogin I only see the RBR50 with the 2 satellites and can't find the RBR20.  Should I delete the RBR20 and then go through Orbilogin and add a satellite or something else?

Windows 10, latest firmware.

 

Thanks for the advice!

Joe

3 Replies

  • CrimpOn's avatar
    CrimpOn
    Guru - Experienced User

    The Orbi router creates a LAN subnet which is different from the WAN subnet that the router is connected to using one of the private IP numbers:

    https://en.wikipedia.org/wiki/Private_network 

    Much of the time, the router's WAN IP address is either:

    • A public IP address (because it is connected directly to a modem, rather than a router), or
    • A private IP address in the 192.168.0.x address space.

    When this happens, the router creates a private subnet using 192.168.1.x

     

    However, if the router itself is assigned an IP in the 192.168.1.x space (which often happens when the Orbi is attached to a combination modem/router, Netgear decided to have the LAN space be 10.0.0.x.  They could have picked any of the other number ranges, but for some reason they picked 10.0.0.x  This indicates that the Orbi is connected to a combination modem/router (in this case a fiber ONT/router)

     

    The RBR20 sees "oh, my WAN side has an IP in 10.0.0.x, so I'll pick a different private IP space for my LAN side" and chose 172.xx.xx.xx

     

    There is nothing to be gained by having the RBR20 in router mode.  If you change it to Access Point (AP) mode, then anything connected to the RBR20 will be in the same 10.0.0.x space with the rest of the network.  The reason you cannot find the RBR20 using orbilogin.net is because you are connected to the primary RBR50 system.

    • jschwed's avatar
      jschwed
      Aspirant
      Thanks! I am guessing the only way to change the RBR20 is to take a laptop and plug into it and change it to an AP there orbi login?