Netduma R3 randomly loses 5 GHz Wi-Fi and sometimes internet with Spectrum

[Frank Betancourt]

Hi, I have Spectrum internet connected to a Netduma R3. Spectrum checked the connection and told me the problem appears to be the router, not the Spectrum modem.

After the router has been working for several days, the 5 GHz Wi-Fi network randomly disappears. The 2.4 GHz network remains available. This keeps happening every few days.

I’ve also had the internet stop working through the R3. Restarting/resetting the R3 brought the internet back. I installed the latest firmware that was released a few days ago, and I’ve checked everything and made sure it’s up to date, but I’m still having the same problem.

[Netduma Fraser]

If it's a specific issue happening with the R3 WiFi network it would be the R3 and not your main internet that's true. Have you split the WiFi bands and connected to 2.4GHz/5GHz separately? Could you provide the logs when the WiFi issue next happens and when you next get the internet disconnect please?

[Frank Betancourt]

I also noticed these messages in the system logs: “HTTP request failed, code: 1,” “time went backwards,” and “conntrack byte count went backwards.” I understand they may be unrelated to the 5 GHz WiFi issue, but could you tell me what they mean and whether they indicate a problem with the router? I’ve attached the logs I have now. The next time the 5 GHz network disappears, I’ll download the logs right away and send them to you so you can check whether they help identify the cause.