Hi,My Orbi RBR40 (model name doens't list in the pull down) wifi router with 2 sattelites is losing internet connecivity every ~12 hours or so. Wifi connection to the Orbi is maintained and I can reach the admin services on the wifi router but can't get beyond that to my cable modem. The cable modem is an Arris supplied by Spectrum / ATT. -- Dermot

DOD-March wrote:One more thing, there's no seeming issues on the wifi side of the router. It's the connection being dropped from router to modem. I can access the 192.168.1.1 on the router from all devices but can't get to the modem 192.16.0.x during an outage.I suspect the "192.16" is a typo, which should read "192.168", correct?This indicates that FURRYe38 is correct and you have "two routers".The most obvious way to address this issue is to place the Orbi in Access Point (AP) mode, using the Orbi web interface.On the Advanced Tab, Advanced Settings, Router/AP mode.Before doing anything, can you please humor an "Old Guy" and report the times from the Advanced Tab Home Page, click on "Connection Status" in the Internet Port box.What does it show for Lease Obtained and Lease Expires?Thanks

DOD-March wrote: If I switch to AP mode won't I lose the direct IP address for the router? IP Address192.168.0.2Subnet Mask255.255.255.0Default Gateway192.168.0.1DHCP Server192.168.0.1DNS Server209.18.47.62209.18.47.63Lease Obtained0 Days, 1 Hours, 0 MinutesLease Expires0 Days, 0 Hours, 54 MinutesThis is correct. In AP mode, the primary router assigns IP addresses to every device. The IP subnet 192.168.1.x no longer will exist. So, the Orbi mostl likely will be 192.168.0.2, and every remaining device in the house will be 192.168.0.<something> This is one consideration in choosing which of the two routers "needs to go". If you have gone to a lot of effort to manage the 192.168.1.1 subnet (assigning IP's to devices, for example. managing the DHCP pool.), then many people would try to put the base router into "bridge" or "passthrough" mode and preserve their efforts. On the other hand, if the Orbi is just "running itself", you have little to lose.

DOD-March wrote:a) Does bridging through the modem expose my network to potential hackers?b) Why does this problem only occur intermittently - i.e. 12 hours+ a day it all works ok.a) The Arris web User Guide indicates that this router has basically the same sort of firewall as the Orbi:https://arris.my.salesforce.com/sfc/dist/version/download?operationContext=DELIVERY&ids=068a0000004gvQu&d=/a/a00000009iRl/3Io9YewaD4T0ZIMUrnBI7wvlKcv9sa_auAczmzbO.9Q%3D&oid=00D30000000kUAL&viewId=05Ha0000000SWUi It also shows how to disable the Arris WiFi network so that those radios do not interfere with the Orbi. b) Why? This is indeed the "$64 Question". For some Orbi users, this never happens. My Orbi has never once had to be restarted because it no longer connected to the modem. (If this were a common phenomenon, my feeling is the "Blog-o-Sphere" would be in flames with complaints.) I have a personal theory that somehow the DHCP coordination between the Orbi and DHCP server fails and the Orbi concludes that it may no longer communicate. The upstream server thinks everything is "just fine", and (if it had a brain) might wonder why this particular customer simply doesn't send any packets. I believe that rather than reboot the Orbi, some users have found that they can open the Orbi web interface Basic Tab, Internet Menu, and click on the "Test" button at the top and the Orbi internet link is restored. Once again, my personal theory is that this forces the Orbi to send packets to the upstream server and this time the protocol works. If I could reproduce the problem, I would be devoting considerable effort to diagnosing it, but alas I cannot.

Yes, http://192.186.100.1:8080 seems to be the new IP address for the modem. No outages in 12 hours or so.. fingers crossed.. D.

What Firmware version is currently loaded?What is the Mfr and model# of the ISP modem/ONT the NG router is connected too? What channels are you using? Auto? Try setting manual channel 1, 6 or 11 on 2.4Ghz and any unused channel on 5Ghz.Any Wifi Neighbors near by? If so, how many?

RBR40 losing internet connectivity every 12 hours or so

18 Replies

FURRYe38
Guru
Apr 06, 2020
What Firmware version is currently loaded?
What is the Mfr and model# of the ISP modem/ONT the NG router is connected too?

What channels are you using? Auto? Try setting manual channel 1, 6 or 11 on 2.4Ghz and any unused channel on 5Ghz.
Any Wifi Neighbors near by? If so, how many?
- DOD-March
  Tutor
  Apr 06, 2020
  >> What Firmware version is currently loaded?
  2.3.5.34 (upgraded manually from 2.3.5.32)
  
  >> What is the Mfr and model# of the ISP modem/ONT the NG router is connected too?
  Arris TG1672G
  
  >> What channels are you using? Auto?
  >> Try setting manual channel 1, 6 or 11 on 2.4Ghz and any unused channel on 5Ghz.
  2.4GHz : Channel 11
  5GHz : Channel 48
  
  >> Any Wifi Neighbors near by? If so, how many?
  Not many. This is a replacement for a cheapo router I had before. Little did I know the cheapo was rock solid!
  
  One more thing, there's no seeming issues on the wifi side of the router. It's the connection being dropped from router to modem. I can access the 192.168.1.1 on the router from all devices but can't get to the modem 192.16.0.x during an outage.
  
  thanks, D
  - FURRYe38
    Guru
    Apr 06, 2020
    Arris TG1672G is a modem and router.
    If the modem is running in router mode, This would be a double NAT 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/26765/Disabled-Features-on-the-Router-when-set-to-AP-Mode
    
    I would try option 1. I believe this model modem has a bridge funtion. Make contact with the MFr or ISP to help you with this.

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RBR40 losing internet connectivity every 12 hours or so