NETGEAR is aware of a growing number of phone and online scams. To learn how to stay safe click here.
Forum Discussion
CM1200 Modem Not Getting Proper Speeds
I just recently moved into a new apartment and had to change ISPs (I was using Xfinity, but since they don't service the area I'm in I had to switch to Breezeline). I signed up for their 1Gbps se...
IT-Thomas wrote:I just recently moved into a new apartment and had to change ISPs (I was using Xfinity, but since they don't service the area I'm in I had to switch to Breezeline).
I signed up for their 1Gbps service and for the first week everything seemed to be working great, then all of a sudden my speeds dropped significantly. I did all the standard troubleshooting steps:
- Checked and verified physical connections were secure and there weren't kinks or damage to any of the cables.- Power cycled both my router and my modem
- Checked my PC for updates and verified that the latest Ethernet drivers are installed.
I then checked my router for a firmware update and lo and behold it needed one so I did it. I then contacted the ISP and requested that they check to see if my modem needed a firmware update. It did, so I had them perform it. My CM1200 is now on firmware version 3.02.01 and I can't get more than 8Mbps on it.
I read some other threads here and attempted various suggested troubleshooting steps including switching the coaxial cables, ensuring there aren't splitters between the modem and the main line, multiple power cycles, and it's still not getting the right speeds.
Do I need to replace my modem?
Not necessarily. What router (brand and model number) do you have connected to your modem?
You have made firmware updates to two of the major components of your LAN. You need to power down your LAN, then power it up sequentially to allow the connections to be re-established.
Power down your modem, disconnect the power cord, the coax cable, and the Ethernet cord to your router. Wait a minute, connect the coax cable and the power cord and allow your modem to fully boot and stabilize. One of the last indicators to illuminate will be the one for internet.
Power down your router, disconnect the power cord and the Ethernet cord to your computer. Wait a minute. Connect the power cord Ethernet cord to your modem and start up your router. Give it plenty of time to fully boot and stabilize. One of the last indicators to illuminate will be the one for internet.
Reconnect the Ethernet cable to your computer and restart the computer.
Recommend you use the Ookla native application on your computer to test throughput. Avoid using a web browser test.
I'm using a Nighthawk AX1800 WiFi 6 Router (RAX10)
I usually get 600-750 Mbps WiFi speeds, and I just conducted a test and only got ~240Mbps
Ethernet test (PC to modem directly) peaked around 290 Mbps
I've also attached an updated screenshot of the cable connection status.
I should note that to get the power levels to a reasonable level, I had to reinstall the splitter (the technician mentioned that the power level was too high and installed the splitter to assist that), so do I need to talk to the ISP about fixing the power level so that I don't need the splitter?
Thats much better.
No correct or un-correctables. Thats good.
Can keep that on or ask the ISP about a in line attenuator modulal to put behind the modem or at there connection box outside. I've got one mine as well. I use it with my CM1200 and CAX80.
I'm still experiencing issues with my modem's speeds.
I should also note that my Netgear Nighthawk app's speed test output a speed of over 800Mbps for the WiFi, even though Ookla only showed about 230-250 Mbps.
This is an updated screenshot of my event log. Anything else I can try? Would you recommend a factory reset
What do you see with a wired PC connected to the back of the modem, no wifi router in the middle and using Ooklas installable speed test app?
Those Criticals and Warnings have to be looked at by the ISP.
