Regular Visitor
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13 Messages
Netgear CM700 with gigabit internet??
So I just upgraded to gigabit internet and according to the my account info it shows that this modem is compatible with the 1000Mbps internet but customer service is telling me that this modem is NOT since it is DOCSIS 3.0 and Gigabit needs a DOCSIS 3.1 modem. I was getting around 600Mbps down/18up on my previous plan and not im getting 700Mbps down / 6up. Does anyone have any experience with this modem and the gigabit internet plan? Not sure why my upload speed with get cut by 1/3 with the gigabit plan tho.
sumanch
New Poster
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3 Messages
5 years ago
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CCAndrew
Gold Problem Solver
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25.9K Messages
5 years ago
Did you read any of the posts? The modem is not approved by Comcast for Gigabit speeds
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sumanch
New Poster
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3 Messages
5 years ago
@CCAndrew
I don't see anyone saying definitively that it's not supported and the technician I spoke with said it wasn't clear if it was/wasn't supported, but that it should work for more speed than what I was getting. Why are so many people in this same thread saying they're getting 950Mbps?
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CCAndrew
Gold Problem Solver
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25.9K Messages
5 years ago
https://www.xfinity.com/support/devices/#unauth
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ThE_HUntER_USA
New Poster
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2 Messages
4 years ago
But that still doesnt answer the question as to why all of a sudden his speed is cut in half. I Have the same modem and after upgrading my speed is worse than what I had before...
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ThE_HUntER_USA
New Poster
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2 Messages
4 years ago
So I just upgraded to gigabit too and before was getting maybe 400max (which I was on 400 mb plan) and now after upgradeing to gigabit im getting 200 mbs... which is silly. I know the CM700 cant take the full gigabit but was hoping it would be 500-700 mbs even maybe max at the 935mbs like its stated... I dont need those extra 70mb/s but im not even getting half of what I am paying for.
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EG
Expert
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110.1K Messages
4 years ago
Please re-read this thread in its entirety. You'll never get gig speed with a CM 700 modem. It is only DOCSIS 3.0 capable. A DOCSIS 3.1 modem like the SB8200 is required.
https://www.amazon.com/Next-Generation-ARRIS-SURFboard-SB8200-DOCSIS/dp/B01N6SKK1G
https://www.amazon.com/Motorola-MB8600-Certified-Comcast-Communications/dp/B0723599RQ
https://www.amazon.com/NETGEAR-CM1000-DOCSIS-Ultra-High-download/dp/B01I5TJGSE
If a non-compatible modem is used, it will default to using a lower speed tier configuration file. This includes the upload speed as well.
Please feel free to create a new thread of your own here on this board if you have further concerns. 11 month old dead thread now being closed.
[Edit] You beat me Andrew 😮
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CCAndrew
Gold Problem Solver
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25.9K Messages
4 years ago
To prove it’s not compatible and what is,use this link
https://www.xfinity.com/support/devices/#unauth
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