I have an RBK50 that I have been using for a year. I have made NO changes. ISP is the same, the modem it's connected to is the same - literally NOTHING has changed. Suddenly this weekend, it's been losing connection with the modem. By that I mean my Orbi network is up and available, but shows "offline". I have confirmed that the modem is operating normally but connecting a laptop to it directly. There are no problems. (this is an Arris Surfboard - modem only, no router) I have also confirmed with comcast that they can see the modem and it is operating normally (good signal, etc) My Orbi has the latest firmware. I have tried power cycling the entire network several times I have even tried a full factory rest and fresh install of my Orbi Occasionally I can get it back online briefly, but then it falls off. The *only* possible issue I have been able to isolate is that I have recently been trying to upload several gigabytes of photos on one of my laptops to a google drive account. Is it possible that upload is being swamped and the router is falling over? Is that a thing? Any other suggestions other than the possibility that the router is just dead? Literally NOTHING has changed and I have tried literally every suggestion I have tried on the forum (above and beyong the normal trouble shooting)

Can you login to the web GUI (orbilogin.com)? What is the status of the system in the GUI? Does Orbi have an IP address from the ISP modem?You can get this information from the home page after you access orbilogin.com

I was able to get there at one point, and it showed me that "no internet access" red badge. I just went back to check the IP and answer your questions and I can't get there at all. The iphone app can't find the Orbi now either. This happened before and it did eventually come back, but I can't tell you why.... This ran for a full year with no issues. I don't understand it.

Can you please connect a PC to the LAN port on the router and use a browser to reach to 192.168.1.1. What is the status of the LED on the back of the router and the ring on the top if the router?

What is the Mfr and model# of the ISP modem the NG router is connected too? Swapped LAN cables between the ISP modem and Orbi? Disable IPv6 on the Orbi router and see... jlkass wrote: I have an RBK50 that I have been using for a year. I have made NO changes. ISP is the same, the modem it's connected to is the same - literally NOTHING has changed. Suddenly this weekend, it's been losing connection with the modem. By that I mean my Orbi network is up and available, but shows "offline". I have confirmed that the modem is operating normally but connecting a laptop to it directly. There are no problems. (this is an Arris Surfboard - modem only, no router) I have also confirmed with comcast that they can see the modem and it is operating normally (good signal, etc) My Orbi has the latest firmware. I have tried power cycling the entire network several times I have even tried a full factory rest and fresh install of my Orbi Occasionally I can get it back online briefly, but then it falls off. The *only* possible issue I have been able to isolate is that I have recently been trying to upload several gigabytes of photos on one of my laptops to a google drive account. Is it possible that upload is being swamped and the router is falling over? Is that a thing? Any other suggestions other than the possibility that the router is just dead? Literally NOTHING has changed and I have tried literally every suggestion I have tried on the forum (above and beyong the normal trouble shooting)

It's an arris sb6141 surfboard. I have already tried replacing the ethernet cable. I can try disabling IPv6. I had to step away but ran a little experiment before leaving. Each time I restart the upload to Google drive, I lose the router's connection to the modem. When I eventually get it back up (full power cycle + time) and then DON'T restart the upload, it stays up! So it looks like the upload is knocking the router off for some bizzare reason.

ORBI RBK50 - Network is up but "Offline" - I AM LOSING MY MIND

17 Replies

ekhalil
Master
Jan 21, 2019
Can you login to the web GUI (orbilogin.com)? What is the status of the system in the GUI? Does Orbi have an IP address from the ISP modem?
You can get this information from the home page after you access orbilogin.com
- jlkass
  Aspirant
  Jan 21, 2019
  I was able to get there at one point, and it showed me that "no internet access" red badge. I just went back to check the IP and answer your questions and I can't get there at all. The iphone app can't find the Orbi now either. This happened before and it did eventually come back, but I can't tell you why....
  
  This ran for a full year with no issues. I don't understand it.
  - ekhalil
    Master
    Jan 21, 2019
    Can you please connect a PC to the LAN port on the router and use a browser to reach to 192.168.1.1.
    What is the status of the LED on the back of the router and the ring on the top if the router?
FURRYe38
Guru
Jan 21, 2019
What is the Mfr and model# of the ISP modem the NG router is connected too?

Swapped LAN cables between the ISP modem and Orbi?

Disable IPv6 on the Orbi router and see...

jlkass wrote:

I have an RBK50 that I have been using for a year. I have made NO changes. ISP is the same, the modem it's connected to is the same - literally NOTHING has changed.

Suddenly this weekend, it's been losing connection with the modem. By that I mean my Orbi network is up and available, but shows "offline".

I have confirmed that the modem is operating normally but connecting a laptop to it directly. There are no problems. (this is an Arris Surfboard - modem only, no router)

I have also confirmed with comcast that they can see the modem and it is operating normally (good signal, etc)

My Orbi has the latest firmware.

I have tried power cycling the entire network several times

I have even tried a full factory rest and fresh install of my Orbi

Occasionally I can get it back online briefly, but then it falls off.

The *only* possible issue I have been able to isolate is that I have recently been trying to upload several gigabytes of photos on one of my laptops to a google drive account.

Is it possible that upload is being swamped and the router is falling over? Is that a thing? Any other suggestions other than the possibility that the router is just dead? Literally NOTHING has changed and I have tried literally every suggestion I have tried on the forum (above and beyong the normal trouble shooting)
- jlkass
  Aspirant
  Jan 21, 2019
  It's an arris sb6141 surfboard.
  
  I have already tried replacing the ethernet cable. I can try disabling IPv6.
  
  I had to step away but ran a little experiment before leaving. Each time I restart the upload to Google drive, I lose the router's connection to the modem. When I eventually get it back up (full power cycle + time) and then DON'T restart the upload, it stays up!
  
  So it looks like the upload is knocking the router off for some bizzare reason.
  - ekhalil
    Master
    Jan 21, 2019
    jlkass wrote:
    
    It's an arris sb6141 surfboard.
    
    I have already tried replacing the ethernet cable. I can try disabling IPv6.
    
    I had to step away but ran a little experiment before leaving. Each time I restart the upload to Google drive, I lose the router's connection to the modem. When I eventually get it back up (full power cycle + time) and then DON'T restart the upload, it stays up!
    
    So it looks like the upload is knocking the router off for some bizzare reason.
    
    This sounds to me like the ISP modem gets overloaded with packets from Orbi and then gets blocked. This can be caused by bufferbloat.
    
    I believe that reducing the MTU size might help. The MTU size configuration can be found under >> ADVANCED >> Setup >> WAN Setup

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ORBI RBK50 - Network is up but "Offline" - I AM LOSING MY MIND