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user_spas0202
1st Topic

Visitor

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2 Messages

Thursday, June 5th, 2025 6:21 PM

CM3000 not delivering X2 Gbps download and upload speeds

Replaced my old CM2000 Cable Modem with a new CM3000 Cable Modem on June 3rd to take advantage of my X2 Gigabit speeds I'm paying for.  Here is my latest speed test results.

What information would Xfinity support like to help me the internet speeds promised by Xfinity?

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Updated 

1 month ago

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XfinityAirelle

Official Employee

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2.7K Messages

1 month ago

Hi there! Our team is happy to look into this for you. Were you able to add your new modem in the Xfinity app? 

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user_spas0202

Visitor

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2 Messages

Hi Airelle, I was able to add my new modem in the Xfinity app.  I seem to be seeing No Ranging Response received - T3 time-out messages repeatedly as well as TCS Partial Services messages in the Event Log of my NETGEAR CM3000 modem. I think this impacting my upload speed. 

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1 month ago

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XfinityAirelle

Official Employee

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2.7K Messages

 

user_spas0202 Thanks for letting us know. Seems like you may be right, but we would need to look at your account in order to dig deeper. 

Can you initiate a direct message and start with your full name and address? To start a direct message, you must be signed in. Please click the "Direct Messaging" icon in the top right of the page next to the bell, and send your message to "Xfinity Support". Talk to you there!

 

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1 month ago

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EG

Expert

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111.6K Messages

1 month ago

@user_spas0202 @XfinityAirelle 

Please circle back here and post any possible solutions for the issue here in these open public forums so that all readers here may benefit from the exchange / info. This is in keeping with the spirit for which these public help forums were originally intended. Thank you.

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