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Forum Discussion
kingsxman
Dec 06, 2020Star
Webex issues with RBR750 setup
I recently purchased an Orbi AX4200 system with the RBR750 router and 2 satellites. I have only had it a few days. I have the router plugged into an ethernet port on my Xfinity router. (Forget wh...
plemans
Dec 06, 2020Guru - Experienced User
so the cbr750 system has its own integrated modem. you shouldn't have it connected through a xfinity device.
So do you actually have the cbr system? or whats your model number?
What xfinity modem do you have it connected to? many have their own integrated router as well. That can cause a double nat and issues.
kingsxman
Dec 06, 2020Star
My bad. I was looking at the wrong thing. In logging into the Orbi modem itself its an RBR750.
Your comment on the Orbi replacing the cable modem is interesting. The instructions that came with the Orbi were incredibly basic. It "looked" like, in the instructions, The orbi DID replace the cable modem...however...there is no coaxial connection on the Orbi router. So...thats not going to work. When i asked the Netgear technician on the chat about it she said that it was fine to just plug it into an open ethernet port on the Xfinity router.
My Xfinity router is a Technicolor CGM4331COM
- plemansDec 06, 2020Guru - Experienced User
so the CGM4331COM has its own integrated router function. Its an XB7 modem/router combo device.
It can cause a double nat situation.
options to try (only use 1)?
1. put the CGM4331COM in modem only mode. this disables its router function.
2. put the Netgear in access point mode. it disables its routing fuction and several other functions, wireless and ethernet still work fine but it leaves the xb7 controlling the actual routing. Tends to be the simplest route. If you do this, disable the wireless on the xb7 to prevent interference.
- kingsxmanDec 06, 2020Star
Thanks for the help. I'm sure I'm in a double nat situation. My routers network is 10.0.x.x and i see the orbi is 192.168.x.x
I'll look into doing your suggestions. Doesnt the Xfinity router have to be in "router" mode so that it will nat the source traffic going to the internet? If it functions as only a modem will it still do that?
- plemansDec 06, 2020Guru - Experienced User
You just need to choose 1 option depending on what services you use.
If you're using xfinitys security services/parental controls/etc (not sure what else they offer on their boxes) then you'd want to leave it as router with the netgear in AP (access point) mode.
If you're using netgears parental controls/circle/armor, then you'd want it as router with the xfinity in modem only mode.
Or if you're using both, you can go into the xfinity's and put the netgears IP address into the xfinity's dmz. little more challenging option but also an option.
You can even try swapping to see which works better for you.
Try it
xfinity (modem only)----->netgear router mode
xfinity (modem/router combo)----->netgear (ap mode)
I switch stuff around a lot because I have time and like to play. But that's just me.
- kingsxmanDec 06, 2020Star
BTW, what functionality do I lose with putting the Orbi in access point mode?