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Forum Discussion
CM1200 speed issue with Xfinity Gigabit service
Hello, I have gigabit service with Xfinity, and I did a speed test and pulled 950mbs, instead of renting the XB6 I purchased the CM1200, now my speeds are ~450MBps. I did not configurations on th...
Weird. Still no dice. I did a speedtest on boot up with my Xfinity supplied cable modem:
Ping - 14ms
Download - 926.24
Upload - 40.01
Then I hooked up my Netgear cm1200 and factory reset it to insure all settings were default and performed another speed test.
Ping - 15ms
Download - 606.29
Upload - 29.45
Do I just have a faulty one?
Yes. You might try another CM modem...
Thanks for all the advice guys, greatly appreciate the responses. Here's where I stand as of this morning.
- I contacted Netgear support last night and worked with a tech on the call to check all of my cm1200 settings (after a reset to factory). The tech noticed that the power levels for the upload and download channels looked off and stated that Xfinity needed to reprovision the device and that I would need to contact them directly.
- I contacted Xfinity this morning and they reprovisioned the device but I was still seeing only 600 Mbps download. After troubleshooting with the Xfinity tech more he stated that an Xfinity tech would need to come to my house to complete my upgrade to a 1 Gbps plan and scheduled a time for this upcoming Friday. To me, this makes no sense seeing as I can swap out my Netgear modem with my old Xfinity modem and get 950 Mbps. No matter how much I explained this though he was saying I still have to have a tech out. So now I wait for Friday. I'll update back here after that visit to get closer for anyone who might track this thread in the future.
Well what may work for other modems may not work for others. Let the tech come out and check it all. Have the CM1200 online with a wired PC connected directly to the CM modem. Have only Ooklas installable speed test app on your PC running. Disable or exit from all other applications while hes there and heling you test. Take notes and if even after the tech has made any adjustments and can't get the CM modem to speed out at near 900Mbps, then get this information to your NG support case and see about getting an RMA.
kioteh wrote:Thanks for all the advice guys, greatly appreciate the responses. Here's where I stand as of this morning.
- I contacted Netgear support last night and worked with a tech on the call to check all of my cm1200 settings (after a reset to factory). The tech noticed that the power levels for the upload and download channels looked off and stated that Xfinity needed to reprovision the device and that I would need to contact them directly.
- I contacted Xfinity this morning and they reprovisioned the device but I was still seeing only 600 Mbps download. After troubleshooting with the Xfinity tech more he stated that an Xfinity tech would need to come to my house to complete my upgrade to a 1 Gbps plan and scheduled a time for this upcoming Friday. To me, this makes no sense seeing as I can swap out my Netgear modem with my old Xfinity modem and get 950 Mbps. No matter how much I explained this though he was saying I still have to have a tech out. So now I wait for Friday. I'll update back here after that visit to get closer for anyone who might track this thread in the future.
They did the same with me and replaced the line to the house, no difference. It's the modem or something in the modem settings that does not allow it to get the higher speed that Netgear advertises. Unfortunately my free support period is expired and the Netgear wanted me to pay about $150 to troubleshoot this for me. So I decided to just pay that money and buy a new Xfinity modem directly from them.