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Forum Discussion
Information on connecting to your new ISP modem/router
Good morning, in the area where I live they've installed pure FTTH fiber optics, so my ISP will be changing my router. I have an Orbi RBK 753 system in router mode connected to the LAN port of my cur...
Yes. The Orbi router will connect to the new ISP device and should function as before. There is one potential situation to be aware of. (that annoying Forum bug that does not let users past images into posts if frustrating).....
The default for Orbi routers is to create a LAN with the IP subnet 192.168.1.x through 192.168.1.254, with the router keeping 192.168.1.1 for itself.
However, if the ISP router has assigned an IP address to the Orbi WAN port that is part of 192.168.1.x, then the Orbi cannot use that for its own LAN and instead creates the LAN 10.0.0.x and keeps 10.0.0.1 for itself.
My impression is that the previous ISP did this and caused the Orbi to create 10.0.0.x
If the new ISP router does exactly the same, then the Orbi will run exactly as it does not.
If the new ISP router assigns the Orbi WAN port an IP in a different subnet, then it is not entirely clear how the Orbi will respond.
This will make no difference unless you have reserved IP addresses for devices that may no longer be part of the LAN IP subnet.
Hi, thanks for the reply. The Netgear Orbi automatically changed the IP address on the Orbi to 10.0.0.1 when I first set it up. I remember getting a message saying it had the same IP address, and it suggested changing it to 10.0.0.1, which I accepted, and it changed. What I want is for the Netgear Orbi to automatically get an IP address from DHCP when I connect it to the new ISP router. Is that correct? For example, it's like a DHCP client when it connects (smartphones, etc.).
If the new ISP router assigns the Orbi WAN port an IP in a different subnet, then it is not entirely clear how the Orbi will respond.
FWIW, I've tried this. If the WAN subnet matches the LAN subnet configured in the Orbi, then the Orbi will change the LAN subnet to a different private address space. It also changes address reservations, etc so everything is aligned with the new address space.
What I want is for the Netgear Orbi to automatically get an IP address from DHCP when I connect it to the new ISP router.
It does that by default. Note that IP address is only for the WAN interface. The LAN subnet is different (and set described above). Almost certainly you'll still have a 10.0.0.x LAN subnet after the switch, unless your new ISP gateway happens to default to that address. That would be rare, as ISP routers almost always default to 192.168.0.x or 192.168.1.x.
