New Poster
•
4 Messages
Not receiving docsis 3.1
I upgraded from CM600 to a sb8200 however it doesn't seem 3.1 has been pushed to my modem. All lights are Green on the SB8200 and I'm receiving max speed of around 380 on my 1gig plan.
New Poster
•
4 Messages
I upgraded from CM600 to a sb8200 however it doesn't seem 3.1 has been pushed to my modem. All lights are Green on the SB8200 and I'm receiving max speed of around 380 on my 1gig plan.
BruceW
Gold Problem Solver
•
26.8K Messages
17 days ago
The SB8200 is not compatible with Gigabit internet service. Comcast/Xfinity rates it for wired download speeds "up to 957, 936 Mbps, or 934 Mbps" depending on the device version. Follow the "See all modems" link near the bottom of https://www.xfinity.com/support/internet/customerowned, and then under the "Compatible Modems" heading click the Arris list. Using devices on Internet speed tiers for which they are not compatible with tends to produce unexpected results, often speeds well below the ones you are paying for.
AFAIK Comcast/Xfinity has never said how they provision devices operating on speed tiers they're not compatible with. All I can tell you is that many customers who tried it have reported that they don't get full speed. There's a tendency to think the device will operate at the maximum speed it is capable of, but that doesn't seem to be the case.
You need to either get a device compatible with Gigabit, or drop back to a plan speed for which the 8200 is compatible.
Please be aware that there are 2 kinds of responses in this Forum: Replies and Comments. 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.
0
XfinityThomasA
Official Employee
•
2.9K Messages
16 days ago
0
0
BruceW
Gold Problem Solver
•
26.8K Messages
16 days ago
The information provided by @XfinityThomasA above is not accurate. Unfortunately the "... https://www.xfinity.com/support/articles/list-of-approved-cable-modems ..." page has been badly out of date ever since the "customerowned" page replaced the "my device info" page.
For instance, the "customerowned" page does not have a "View details" link under device images (details are shown as part of the device image, or as a list below the device model number), and you can't "narrow the search results by using the filters available on the left-hand side of the screen" because there are no filters.
The "list-of-approved-cable-modems" page should be corrected or deleted. The current information is found following the path I described in my post yesterday October 3rd, above.
Please be aware that there are 2 kinds of responses in this Forum: Replies and Comments. 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)
0