Cannot get DOCSIS 3.1 running on my new sb8200. Lights on the front always are green. Checked the event log and there are critical error saying the config file will not load.
Have xFinity coming out on Wed. but don’t think they’ll be able to fix it unless the tech is aware of this issue and there is a fix.
From what I’ve read others had this same problem - wondering how it got fixed so they get full speed and take advantage of DOCSIS 3.1.
Best answer by SURFboard Moderator
In this case we would suggest you to check the cable signal level that your modem is getting from your service provider to isolate the issue. There are some important things that should be within a specific range in order for the internet to work properly.
First, the SNR should be above 33 on all of them. The downstream power should always be between -15 and +15. The closer to 0 the better connection. Finally, your upstream power should always be between +45 and +51
On all of those values you should not have more than 3 decibels (or dB) between the lowest and the highest
By having the values in less than that, your device will have interrupted connection, slow or no connection at all.
http://arris.force.com/consumers/articles/General_FAQs/SB8200-Cable-Signal-Levels
In this case we would suggest you to check the cable signal level that your modem is getting from your service provider to isolate the issue. There are some important things that should be within a specific range in order for the internet to work properly.
First, the SNR should be above 33 on all of them. The downstream power should always be between -15 and +15. The closer to 0 the better connection. Finally, your upstream power should always be between +45 and +51
On all of those values you should not have more than 3 decibels (or dB) between the lowest and the highest
By having the values in less than that, your device will have interrupted connection, slow or no connection at all.
http://arris.force.com/consumers/articles/General_FAQs/SB8200-Cable-Signal-Levels
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