NETGEAR is aware of a growing number of phone and online scams. To learn how to stay safe click here.
Forum Discussion
Upgraded from CM600 to CM1200, upload speed halved
I figured I'd ask here before I return the new modem. I have an xfinity 400mbps down/100mbps upload speed plan. I had been using the CM600 for a while, which gave a good 450mbps/12mbps down/up. Xfin...
Has a power OFF of the modem for 1 minute then back ON been perfomed?
Speed testing with a wired PC connected to the CM1200 modem or is there a wifi router in between?
Please post a copy and paste of the modems connection status and event log page.
https://kb.netgear.com/30007/How-do-I-obtain-the-cable-connection-information-from-a-NETGEAR-cable-modem-modem-router
https://kb.netgear.com/30008/How-do-I-view-or-clear-the-event-logs-on-my-NETGEAR-cable-modem-or-modem-router
Be sure your using a good quality LAN cable between the modem and router. CAT6 is recommended.
What is the brand and model of the host wifi router connected to the modem?
I have tried the full power off, wait and restart.
The speed test is being done through the Netgear Nighthawk app, which shows the speed that the router is getting, which is cable connected to the modem.
Testing on any other device that is connected via WiFi will of course yield lower speeds.
Here are the logs:
Information:
Be sure your using a good quality LAN cable between the modem and router. CAT6 is recommended.
What is the brand and model of the host wifi router connected to the modem?Try Speed testing with a wired PC connected to the CM1200 modem with out a wifi router in between.
Any Criticals, Errors or Warnings seen in the event logs needs to be reviewed and resolved by the ISP. Indicates a signal issue on the ISP line up to the modem. Otherwise cable connection data looks good. Power levels are good as well.
The router is Netgear Nighthawk mesh WiFi 6