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Forum Discussion
Orbi RBR 850 and Australian NBN
Hi, this is my first post here. My question is can an Orbi RBR 850 connect directly to an Arris CM8200 Cable Modem? I'm in Australia, and my current setup is a NBN Arris Cable modem connected to my I...
Your ISP Modem already has a built in router and wifi. This would be a double NAT (two router) condition which isn't recommended. https://kb.netgear.com/30186/What-is-Double-NAT
https://kb.netgear.com/30187/How-to-fix-issues-with-Double-NAT
Couple of options,
1. Configure the modem for transparent bridge or modem only mode. Then use the Orbi router in router mode. You'll need to contact the ISP for help and information in regards to the modem being bridged correctly.
2. If you can't bridge the modem, disable ALL wifi radios on the modem, configure the modems DMZ/ExposedHost or IP Pass-Through for the IP address the Orbi router gets from the modem. Then you can use the Orbi router in Router mode.
3. Or disable all wifi radios on the modem and connect the Orbi router to the modem, configure AP mode on the Orbi router. https://kb.netgear.com/31218/How-do-I-configure-my-Orbi-router-to-act-as-an-access-point and https://www.youtube.com/watch?v=H7LOcJ8GdDo&app=desktop
Thanks for prompt reply. Yeah, I've seen all these options over the last few weeks of investigating . What I was asking is whether I can remove the ISP's Smart Modem/router all together, and connect the Orbi directly into the NBN Cable Modem which is upstream from the ISP's Smart Modem/Router. As mentioned, at present my setup is NBN Cable modem(Arris CM8200), downstream to ISP's Smart Modem/Router(not in bridge mode, just wifi disabled), downstream to Orbi RBR850 (+ satellite). Works fine.
thanks again
Will take just a minute to find out, as long as the Orbi is in 'router' mode. My guess is, "certainly."
Thanks. That would be great. I am apprehensive concerning all this stuff as our internet access here works fine at present, even though it looks like I haven't set it up correctly. I am just wanting to get this Roon Arc app accessible remotely. I also want to get the Orbi working to it's best capabilities. I just thought after reading all the setup needed to placing the existing setup into bridge mode (, and all previous settings being wiped if I later disabled bridge mode), just hooking the Orbi up directly to the NBN modem may be the easiest option. If I ever needed the ISP's Modem /Router again, I could just plug it back in as it was before? I'm just not sure how complicated this direct hooking up orbi to NBN modem is.
