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Orbi RBR 850 and Australian NBN

jobyfam
Tutor

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 ISP's(Telstra) own  Smart Modem/Router Gen.2 with my Orbi RBR 850 hard wired to the Telstra Smart Modem/Router via ethernet.I haven't placed the Telstra Modem into bridge mode, just turned the wifi off on it. The Orbi is in router mode and everything seems to work well for the past year or more. I'd like to remove the Telstra Smart Modem from the equation now to allow a music App.(Roon Arc), to access my home system remotely. At present, with the current setup, I can't do that.I am looking for a really simple work around .I am not a network techy type. I'm figuring if I just have the Orbi connected directly to the NBN Black Box (ArrisCM8200), all conflicts, double Nat's and anything else may be removed. Does anyone have direct experience with connecting an Orbi RBR850 directly to their NBN black box? Is it a straight forward procedure or do setting need to be changed? I'd appreciate any input

thanks

James

Message 1 of 11
FURRYe38
Guru

Re: Orbi RBR 850 and Australian NBN

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

 

https://kb.netgear.com/30439/What-is-a-NBN-connection-and-which-NETGEAR-routers-and-modems-are-compa...

Message 2 of 11
jobyfam
Tutor

Re: Orbi RBR 850 and Australian NBN

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

Message 3 of 11
CrimpOn
Guru

Re: Orbi RBR 850 and Australian NBN

Will take just a minute to find out, as long as the Orbi is in 'router' mode.  My guess is, "certainly."

Message 4 of 11
jobyfam
Tutor

Re: Orbi RBR 850 and Australian NBN

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. 

 

Message 5 of 11
jobyfam
Tutor

Re: Orbi RBR 850 and Australian NBN

Would that just be a simple matter of attaching the ethernet connection directly to the Orbi from the NBN box. Is there a particular sequence to this procedure, eg, power down the orbi first etc? Do I need to change settings on the devices anywhere and at what stage? Sorry about all these questions .I don't want to create problems I can't fix if this doesn't work.🙂.

Message 6 of 11
CrimpOn
Guru

Re: Orbi RBR 850 and Australian NBN

Generally, one would power off both the NBN box and the Orbi.

Connect the Ethernet cable.

Power up the NBN box and wait 2-3 minutes.

Power up the Orbi.

Message 7 of 11
jobyfam
Tutor

Re: Orbi RBR 850 and Australian NBN

Thanks for prompt reply. And if it doesn’t work ….power orbi and Nbn box down, reconnect all boxes as before, and then power up NBN box, wait 2 to 3 minutes, power up ISP modem/ router then power up orbi??
Message 8 of 11
ekhalil
Master

Re: Orbi RBR 850 and Australian NBN


@jobyfam wrote:
Thanks for prompt reply. And if it doesn’t work ….power orbi and Nbn box down, reconnect all boxes as before, and then power up NBN box, wait 2 to 3 minutes, power up ISP modem/ router then power up orbi??

Yes, correct

Message 9 of 11
jobyfam
Tutor

Re: Orbi RBR 850 and Australian NBN

Thanks again.👍
Message 10 of 11
jobyfam
Tutor

Re: Orbi RBR 850 and Australian NBN

Have done exactly as you suggested. Seems to be working perfectly and the Roon ARC app. which wasn't working for remote access is working perfectly. Thankyou again for your help. James🙂👍👍👍

Message 11 of 11
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