New Contributor II
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5 Messages
Not receiving DOCSIS 3.1
Up until last week my ARRIS SB8200 was receiving DOCSIS 3.1, indicated by the blue lights on the front of the modem. Directly wired in I was pulling 900-940 mbps down. Those lights are now lit green, representing DOCSIS 3.0, and I’m now limited to 500-550 mbps. I’ve tried numerous resets and even bought a second SB8200 to test, same issue
I have had no changes to the coax line and I am not using a splitter. Looking for suggestions, hoping to avoid the $75 charge to have someone out to my home if at all possible.
WiderMouthOpen
Esteemed Contributor III
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3.5K Messages
My guess would be noise on the OFDM channel. Can you post the signal levels from 192.168.100.1? See here on how.
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WiderMouthOpen
Esteemed Contributor III
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3.5K Messages
BTW, the charge is only if the issue is inside the home. If you have tried a new modem and have a direct connection from the demarc. then there is very low chance that the issue is chargeable.
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Darkatt
Honored Contributor
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1.9K Messages
If you are only connecting 3.0, and not 3.1, it's indicative of either noise on the ofdm channel, like WMO suggested, or bad levels. Try replacing any splitters and barrel connections, and the cable cord from the modem to the barrel connecter.
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