I have Spectrum high speed (400 mbps up / 20 mbps down) internet connected to my Orbi RBR40 router via Motorola MB7621 cable modem. I have noticed that periodically my modem lights indicate that the Orbi has lost its upstream channel bond. The Orbi does not correct this condition unless I reboot. Any ideas as to why this would happen?

What Firmware is currently loaded? Swap LAN cables between the ISP modem and RBR. Power OFF both modem and RBR for 1 minute, Then back on with the Modem then after, the RBR. Has a factory reset been performed since last FW update? troutteaser wrote:I have Spectrum high speed (400 mbps up / 20 mbps down) internet connected to my Orbi RBR40 router via Motorola MB7621 cable modem. I have noticed that periodically my modem lights indicate that the Orbi has lost its upstream channel bond. The Orbi does not correct this condition unless I reboot. Any ideas as to why this would happen?

Firmware is up to date (v2.3.5.30) and was recently reset without issue. Ethernet cable between modem and Orbi is new, but will look into getting another one. Beyond this, do you have any explanation as to why the Orbi would lose its channel bond? I'm trying to understand the logic process of the Orbi, which continually frustrates me, as I no one seems to be able to explain why the Orbi seems to have various issues that continue from firmware update to firmware update.

The modem LEDS are indicating services with the ISP, not the Orbi. There are UP and Download status LEDs. https://assets.ctfassets.net/0dyo76hkwr49/2zjSwlh6tygA8swOIkaOk8/24a5316c1e4da567e30a3945550cb0b3/27780-EL_revA_MB7621_QS.pdf Ensure there are no coax cable line splitters in between the modem and ISP service box. Ensure you using good quality RG6 coax cable between the modem and ISP service box. Contact the ISP and have them check the signal line and quality up to the modem and check there logs for any disconnections on your line.

troutteaser wrote:Firmware is up to date (v2.3.5.30) and was recently reset without issue. - and there is your issue. Ethernet cable between modem and Orbi is new, but will look into getting another one. Beyond this, do you have any explanation as to why the Orbi would lose its channel bond? I'm trying to understand the logic process of the Orbi, which continually frustrates me, as I no one seems to be able to explain why the Orbi seems to have various issues that continue from firmware update to firmware update.- The reason the Orbi has problems from FW to FW is because there is no one size fits all. None of us are running our networks the same. Some very basic other with dozens of switches, routers, devices, etc. Therefore what works for you may break someone elses network. The best approach is to stay away from manual updates. NG (my understanding) now only pushes FW IF it contains major updates that will benefits most users. If your system is running, leave it alone, stop checking for updates and enjoy life.

The issue isn't with his FW update or orbi, the issue is with his modem. Manual FW updates have been working well for me FYI. But I factory reset and setup from scratch each time. :smileyvery-happy:

Orbi RBR40 dropping upload bonding

13 Replies

FURRYe38
Guru - Experienced User
Aug 21, 2019
What Firmware is currently loaded?

Swap LAN cables between the ISP modem and RBR.

Power OFF both modem and RBR for 1 minute, Then back on with the Modem then after, the RBR.

Has a factory reset been performed since last FW update?
troutteaser wrote:
I have Spectrum high speed (400 mbps up / 20 mbps down) internet connected to my Orbi RBR40 router via Motorola MB7621 cable modem. I have noticed that periodically my modem lights indicate that the Orbi has lost its upstream channel bond. The Orbi does not correct this condition unless I reboot. Any ideas as to why this would happen?
- troutteaser
  Guide
  Aug 21, 2019
  Firmware is up to date (v2.3.5.30) and was recently reset without issue. Ethernet cable between modem and Orbi is new, but will look into getting another one. Beyond this, do you have any explanation as to why the Orbi would lose its channel bond? I'm trying to understand the logic process of the Orbi, which continually frustrates me, as I no one seems to be able to explain why the Orbi seems to have various issues that continue from firmware update to firmware update.
  - FURRYe38
    Guru - Experienced User
    Aug 21, 2019
    The modem LEDS are indicating services with the ISP, not the Orbi. There are UP and Download status LEDs. https://assets.ctfassets.net/0dyo76hkwr49/2zjSwlh6tygA8swOIkaOk8/24a5316c1e4da567e30a3945550cb0b3/27780-EL_revA_MB7621_QS.pdf
    
    Ensure there are no coax cable line splitters in between the modem and ISP service box.
    Ensure you using good quality RG6 coax cable between the modem and ISP service box.
    
    Contact the ISP and have them check the signal line and quality up to the modem and check there logs for any disconnections on your line.

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Orbi RBR40 dropping upload bonding