ARRIS/SURFboard → SB6141 requires regular reboot

Hello all,

I've recently started struggling with a new problem on my SB6141. For the past week or so it has had a slowly degrading connection until all connectivity is lost until reboot. Downstream power levels hang around +/-1dBmV, and upstream values around ~40dBmV. I'm no expert but from what I understand these values are healthy. After a reboot I have no packet loss, but as the connection degrades latency becomes volatile and packet loss hovers between 1-3%.

Firmware version is SB_KOMODO-1.0.6.8-SCM01-NOSH, pushed recently by Comcast as discussed in another thread on this forum.

Anyone have ideas about where to continue troubleshooting this one? Is it possible that the power levels are dropping over time and a reboot fixes it?

Very confused, any help will be much appreciated.

What's the SNR?

SNR hovers around 37 consistently.

I also notice that occasionally I cannot load the modem's web page.

With your signal levels as good as they are, they would have to shift quite far for them to go out of spec. You can monitor them throughout a 24hr period to actually see if they are massively sliding. Chances are that the signal levels aren't the issue.

There isn't a router involved here by chance?

There is indeed a router. I jumped to the conclusion that it was the modem since I never notice problems with the router. What are you thinking it could be?

Connect a PC/Laptop, etc. directly to the modem eliminating the router. Monitor your connection for a day; periodically viewing your levels & logs. If you still have issues, at least you have eliminated the router.

Out of curiosity: record if any of the frequencies are changing with either downstream or upstream.

I've been monitoring this for the past 2 days and haven't needed a single reboot. Nothing changed on my end so perhaps Comcast fixed something.

Thanks very much for your assistance Johkal!

This was with the router in place?

Yes. I actually never had to connect directly to the modem to execute the test you suggested since the problem never cropped up since my previous post.

Well then, that was the "easy button".

Good luck with your connection.