yduck's profile

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Mon, Dec 28, 2020 10:00 PM

Extreme Pro 600Mb plan with Netgear CM600 only delivers 350Mb

I upgraded my xfinity internet to Extreme Pro - 600Mb download and I am only getting around 350Mb download speed.


I tested by connecting an ethernet cable directly from my macbook pro to the modem and ran xfinity speed test. ( no router, no wifi ). Other speed test site like https://projectstream.google.com/speedtest gives about the same results.

What could be the issue? Netgear CM600 is 24X8 and rated for 960Mb on xfinity's website.
I contacted xfinity and they sent some diagnostic signal and claimed it is all green and normal on their side. They suggest contact modem manufacture, but I doublt it will re-solve the issue.

My modem page shows all 24 download channels are bonded. 5 of the 8 upload channels are bonded.





87.1K Messages

6 m ago

Please post the *Downstream Power Level*, the *Upstream Power Level*, and the *SNR* (Signal to Noise Ratio) numbers.

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