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Forum Discussion
CBR750 Wireless devices connect, but no internet
Thanks for looking at this. It has been bewildering to say the least. I have a CBR750 + 1 satellite. Until today, everything was fine (using Coax with Spectrum) no issues with a single device, b...
(You are not going to like this....)
The CBR750 is a combination cable modem/router/WiFi device.
https://www.netgear.com/images/datasheet/orbi/CBR750.pdf
It is intended to take the place of an ISP cable modem and connect to the coax cable from the ISP. It is not intended to connect to a different type of internet service (such as an AT&T router). Notice that there is no ethernet port on the back labelled "WAN" or "Internet". Notice how the installation guide describes connecting the coax cable and says nothing about connecting an ethernet cable.
https://www.downloads.netgear.com/files/GDC/CBR750/CBR750_QSG_EN.pdf
The User Manual on page 62 describes the two 'modes' for this device:(a) Router and Access Point and (b) Bridge Mode, where it is essentially a replacement for the ISP modem that has no additional functions.
My sense is that you need to (a) go back to Spectrum, or (b) get a different WiFi system.
Sorry.
While I somewhat understand the sentiment, I do feel like we're pivoting from the question posed. If the network as connected was altogether non-functional, I'd just pack my things and go home.
However, Orbi does/did function as a router for about 80% of the connected devices without issue, so I'm more focused on what the problem with the other 20% not sending/receiving traffic is, rather than how to replace the whole system. I understand there isn't a manufacturer manual for this, which is why I'm hoping to find some community knowledge here.
I'd suggest a parallel: a manufacturer won't suggest the best way to place a towel under a door to stop the heat from escaping, but if all I have is towels and I put them under 4 doors and it worked perfectly, but the heat is still leaking from the 5th door, I'm not looking to go buy 5 new doors, but to figure out what's keeping the 5th towel from stopping the heat escaping. If it worked 0/5, I wouldn't bother asking for advice.
I get that throwing money at the problem is *a* solution, but if there are a couple of software tweaks (opening ports, checking device permissions, changing DNS server are some I've considered), that would be *the* solution I'm looking for.
PS: I did swap my R7000 Nighthawk for now, to handle the rest of the devices in the half of the house AT&T router can't reach, but it's clumsy with dead spots and buying a $400+ replacement doesn't excite me. I'd rather try my luck with a different manufacturer if that's the route I'll have to go.
Cheers and Merry Christmas!