3 Messages
Not seeing improved upload speeds after upgrading to a Netgear CM2000 DOCSIS 3.1 modem
I’m on the gigabit plan and my download speeds were as expected with my previous DOCSIS 3.0 modem and with the new Netgear CM2000 DOCSIS 3.1 modem.
However my upload speeds are the same, around 23 Mbps.
I spoke with support today and they said the modem is provisioned and everything looks good on their end and said there must be an issue with my modem and suggested, of course, that I use their hardware.
The Netgear CM2000 is on the list of supported modems for Xfinity and that’s actually how I picked it as one to buy. See https://www.xfinity.com/support/devices
That page even shows that my current modem is the CM2000. I purchased this brand new last week.
My issue seems similar to this post: https://forums.xfinity.com/conversations/your-home-network/sb8200-modem-not-achieving-100-mbps-upload-speeds/657a6693e4ada534519226cf
Unfortunately that user’s issue didn’t seem to get resolved.
BruceW
Gold Problem Solver
•
26.1K Messages
4 days ago
Realize that although Comcast calls some devices "Compatible" and some "Recommended", for all but a few devices those designations only mean "compatible/recommended for use with their Internet service", and not necessarily approved for the new upload speeds introduced last year.
The CM2000 is not compatible with those speeds. Only a few retail devices are. See the "Next Gen" list at the top of the "All Compatible Devices" PDF linked near the bottom of https://www.xfinity.com/support/devices (at the moment that link points to https://assets.xfinity.com/assets/dotcom/projects/cix-4997_compatible-devices/2024.09.18%20Full%20List%20of%20Compatible%20Devices.pdf, but this changes from time to time). Also see:
For faster upload you need one of Comcast's newer rental gateways (XB6, XB7, XB8) or one of the few retail devices shown in the "Next Gen Speed Tier" group with an upload speed rating in the "All Compatible Devices" PDF:
The Reddit link (if they ever get the page back online) lists the approved devices as well as other requirements for faster upload speeds.
Comcast could make all of this much simpler and clearer, but they have chosen not to do so.
When you Comment on a post (by scrolling down to "Comment on this post here...") I am notified of your response. But if you select Reply, I am NOT notified and may not be aware of your response.
(edited)
1
0
XfinityKei
Official Employee
•
1.1K Messages
2 days ago
@user_r5e826 Thanks for bringing your concerns to our team.
I’m here to help with your upload concerns. Can you tell us more about your setup?
Do you have a separate router, splitters, amplifiers etc. connected?
Are you plugged into your modem via ethernet or are you using Wi-Fi to connect?
Are multiple devices getting the same upload speeds?
2
0