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Forum Discussion
Gavinwatson1984
Sep 12, 2019Aspirant
CM1000 and xfinity gigabit
I know this has been posted a couple times but it is not letting me interact with the previous posts. Has the issue with "very" slow xfinity speeds on the CM1000 modem been resolved yet? The comcast g...
plemans
Sep 13, 2019Guru - Experienced User
Gavinwatson1984 wrote:
I know this has been posted a couple times but it is not letting me interact with the previous posts. Has the issue with "very" slow xfinity speeds on the CM1000 modem been resolved yet? The comcast guy said he cant help me trouble shoot because I have my own modem. I am pretty much always getting 350mbs down and 40 mbs up. The most I've seen directly on the modem was around 400mbs. With the router and modem I have in my set up I should beable to get fast speed everywhere in my house. Right? Please help!
Agree with FURRYe38 is saying in regards to the modem. You should be able to get gigabit at the modem and hardwired into the router. In regards to your getting 350mbps. You don't put how you're getting those speeds. Are they wired/wireless? Devices testing with? Website used for speedtesting?
If you're getting that over wireless, thats about what you can expect to get. Wireless isn't going to be able to hit gigabit speeds. The only real way to speedtest gigabit is over a hardwired connection with a computer that supports it.
Another thing you say is you should be able to get fast speed everywhere in your house. How big is your house? Housing materials? These make a big difference as large houses usually need an additional access point. And if your house is made from concrete/brick/adobe/plaster lathe it can really interfere with wireless signals.
- Gavinwatson1984Sep 13, 2019AspirantI have tried multiple computers/ laptops plugged directly into the modem with an ethernet cable. From browsing the forums It looks like multiple people have had this issue with xfinity and the CM1000. I have done my speed tests with https://speedtest.xfinity.com/
And
Speedtest.net by ookla.
I have a comcast tech coming out today to test the line. I do have 1 splitter between my modem and the comcast connection for a DVR. I will try pulling that the see if results change. Thank you guys for your responses.- FURRYe38Sep 15, 2019Guru - Experienced User
Did you pull the splitter and re-test?
- Gavinwatson1984Sep 15, 2019AspirantI ended up having 3 comcast techs here for about 5 hours trouble shooting it. One replaced every connector and splitter but it did nothing so they tried one of their modems and it got the same speed. They then hooked the modem directly to the hub outside of my house and claimed it got 1 gig there. The next day a comcast contractor and I completely recabled my entire house including the underground from the hub. My speed increased to 450mbs and sometimes 500. All of that work proved that it is comcast and not the CM1000. I will pull the splitter tonight just to see if it increases.