chavacaneazy's profile

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Thu, May 6, 2021 4:09 PM

New CM1200 modem and new coax but only 400mbps down with Gigabit service

Following up on technician visit... A tech came out to troubleshoot issues with coax in the home and did discover that the coax needed a splitter as there was too much signal. My power levels are much better and correctable and uncorrectable errors are good. The tech however was not able to connect directly to my modem for direct testing. He could only test through my Wifi router so we couldn't determine if my slower speeds are due to modem or router. I am now wondering if the wrong config file was sent when I provisioned the new modem and that is why I can’t get up to my plan speeds (1200mbps). Has anyone had a similar experience where the Tech couldn't connect directly to the modem for testing?

The logs on the modem also show that Comcast is trying to push firmware version 3.1 when it should be 3.02.01. 

This post was escalated on May 6, 2021 by EG

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EG

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87.1K Messages

1 m ago

For a test, does a computer that is hardwired directly to the CM1200 cable modem (no router in the mix) have the same problem ? You'll need to power cycle/re-boot the CM1200 modem for the computer to be able to get an internet connection, and then again when you re-insert the router into the path.

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I did the search for Xfinity Support since I couldn't find you in the chat

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