RBR50 Internet outage - DNS issue

Woke up this morning and not able to access internet. This seems to be intermittent issue for the past few weeks. Besides this morning, this happened maybe a few days ago and then a few times the previous week. I believe the issue is DNS because:

I did notice my Voip hardphone is still up and functioning. (It is configured with static IP to corp SBC), which tells me my internet isn’t really down. Confirm Cable Modem is up and running (blue lights) and via webpage (192.168.100.1)

Troubleshooting:

Testing internet using Chrome for google.com doesn’t work; Email isn’t’ working, etc.

Check Orbi Router status and internet is “good” 😊

Using cmd, “ping cnn.com” and fails!!

I can ping ISP router and ISP DNS server

Changed my PC network adapter ipv4 DNS setting from DNS DHCP to 8.8.8.8 and “internet” now works!!!

I REBOOT the Orbi (NOT cable modem) and internet works…..

So I believe the current issue within the RBR50 and not my ISP/Cablemodem/etc

Any suggestions?????

NOTES:

I am NOT able to select ISP DHCP and static ISP DNS, its only all dhcp or static for ISP setting….

I have latest firmware - V2.5.1.8

I have 2 remote satellites (RBS50)s

Llast week I did make manual change within Oribi debug screen changing ISP lease from 86400 to 1200 as suggested on another thread…that actually seemed to help but today ruin that thought.

https://community.netgear.com/t5/Orbi/Another-RBR50-Dropping-Internet-Connection/m-p/1875405#M84885

From browser go to the router's debug page (http://192.168.1.1/debug.htm). Use your router's IP address or http://orbilogin.com/debug.htm
Enter admin as user name and your router’s management password
Tick "Enable Telnet" option
Use Telnet from a computer attached to Orbi to connect to your Router telnet 192.168.1.1 and enter admin and the same password as above
Enter the following commands:

root@RBR50:/# config get wan_lease — Should give you --> 86400 as default
root@RBR50:/# config set wan_lease=1200
root@RBR50:/# config commit

Basic Infomation
	CPU Load	28.9926%
	Memory Usage(Used/Total)	177MB/495MB
	Flash Usage(Used/Total)	2945MB/4096MB
	Network Session(Active/Total)	1025/65536
	System Uptime	04:17:15

23 Replies

FURRYe38
Guru - Experienced User
Mar 25, 2020
Power OFF both ISP modem and RBR for 30 seconds, Power ON the ISP modem and let it sync. Then power ON the RBR. The top ring LED should blink, then slowly pulsate WHITE, then BLUE then turn OFF. Test a wired PC to the back of the RBR and see if you get internet access.

What is the Mfr and model# of the ISP modem the NG router is connected too?
- ssgtweasel
  Guide
  Mar 25, 2020
  Suddenlink is ISP (cablemodem)
  Arris SB6190 cablemodem
  - FURRYe38
    Guru - Experienced User
    Mar 25, 2020
    Let us know if a full power off and back on with both modem and RBR helps...
    
    That modem model has known vulnerabilities just FYI:
    http://www.badmodems.com
Blanca_O
NETGEAR Employee Retired
Mar 25, 2020
Hi ssgtweasel

We are looking into this issue and would like to request for debug logs. I will send you a private message for more information.

Regards,
Blanca
Community Team
Smge1lc
Guide
Mar 26, 2020
I too have been having this issue and the common denominator seems to be the DNS. I thought the issue was the priority of my satellites but that solution only worked for a day and I have the same issue. Anyone kill circle? If that the issue? I'll try that.

I've tried the following:
Set mac address to computer
Turn off circle so I can set the DNS to Google only then to start up circle again
Turn off Daisy
Shut off 2 of 4 satellites

The router does say there is an updated firmware available but it will hang when the link is clicked.
- FURRYe38
  Guru - Experienced User
  Mar 27, 2020
  Can you reset your RBR and setup from scratch, this time don't enable Circle or Armor to see if DNS is stable?
  What Firmware version is currently loaded?
  What is the Mfr and model# of the ISP modem the NG router is connected too?
  Smge1lc wrote:
  I too have been having this issue and the common denominator seems to be the DNS. I thought the issue was the priority of my satellites but that solution only worked for a day and I have the same issue. Anyone kill circle? If that the issue? I'll try that.
  
  I've tried the following:
  Set mac address to computer
  Turn off circle so I can set the DNS to Google only then to start up circle again
  Turn off Daisy
  Shut off 2 of 4 satellites
  
  The router does say there is an updated firmware available but it will hang when the link is clicked.
  - ssgtweasel
    Guide
    Mar 27, 2020
    Update as of 27 March 2020....
    
    I rebooted the RBR50 last night after work. After rebooting, internet seemed to be not fully functioning…I could ping cnn.com however my sip hardphone wouldn’t register and still confused about that…
    
    After 3 times rebooting, I would get netlogin.net certificate errors on our iphones via wifi. No issue when not using the wifi…I’m still confused what I was getting that…so I ended up resetting to factory defaults and reprogramming from scratch
    
    I did NOT enable parental control/circle/etc
    I was able to reset the 2 RBS50s that I have (hardwired)
    
    At this time, everything is functioning well. The iphone using Sprint Wifi calling is now working (as it was intermittent the past week or such)
    
    I can only assume there was some sort of corruption or possible high processor usage (during debug screen, snapshots seemed to be over 85%)
    
    NOTE: I do have the latest firmware
NKG
Aspirant
Jun 24, 2020
Router keeps dropping DNS and wifi stops working, however I am still able to use skyp 4 business and remote apps, teamviewer continues to work. However, I am unable to browse the interenate and look at my Orbi router settings through the app or the web interface. This started happening after updating to the latest firware, any ideas?

Latest Firware - 2.5.1.16
- FURRYe38
  Guru - Experienced User
  Jun 24, 2020
  What is the Mfr and model# of the Internet Service Providers modem/ONT the NG router is connected too?
  
  What is the size of your home? Sq Ft?
  What is the distance between the router and satellite(s)? 30 feet is recommended in between RBR and RBS to begin with depending upon building materials when wirelessly connected. https://kb.netgear.com/000036466/How-far-should-I-place-my-Orbi-satellite-from-my-Orbi-router
  
  Try disabling the following and see:
  Armor, Circle, Daisy Chain, Fast Roaming, IPv6 and Set 20/40Mhz Coexistence to 40Mhz only. Set Short preamble instead of Long preamble modes. Save settings and reboot the router and satellite(s).
  
  Has a factory reset and setup from scratch been performed since last FW update?
  NKG wrote:
  Router keeps dropping DNS and wifi stops working, however I am still able to use skyp 4 business and remote apps, teamviewer continues to work. However, I am unable to browse the interenate and look at my Orbi router settings through the app or the web interface. This started happening after updating to the latest firware, any ideas?
  
  Latest Firware - 2.5.1.16

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RBR50 Internet outage - DNS issue