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CM1000

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CM1000

Could you provide feedback on my modem's  (Netgear CM1000) signal levels?  I have Gigabit Internet service, but am only getting consistently around 550Mbps; however, my uploads are dramatically improved since the upgrade.  Thanks for your time and efforts!

 

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Expert

Re: CM1000

The downstream power is very high ! Is there an amplifier on the coax line leading to the modem ? If so, try removing it and see what happens. 



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Frequent Visitor

Re: CM1000

Thanks so much for your response.  I checked, and sure enough there was an amplifier on the line.  I removed the amplifier, unfortunately my speed did not increase.  I've included my updated power levels and event log.  Thanks again!

 

Here's the links in case the images don't display correctly:

https://www.flickr.com/gp/161875446@N03/1DjGf1

https://flic.kr/p/2djHB1f

 

screencapture-192-168-100-1-2019-01-25-17_52_48.pngscreencapture-192-168-100-1-2019-01-26-08_13_57.png

Expert

Re: CM1000

Your signals are just about perfect now. There is a gigabit troubleshooting guide here: https://forums.xfinity.com/t5/Your-Home-Network/Troubleshooting-Gigabit-internet-speeds/td-p/3145413...

 

You might want to give that a try.


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Re: CM1000

Thanks so much for time and reply!  I will complete the steps identified in the troubleshooting guide.  In the meantime, are any of the items in my event log an issue?

 

Thanks again!

Highlighted
Expert

Re: CM1000


@cbears1 wrote:

 I will complete the steps identified in the troubleshooting guide.  In the meantime, are any of the items in my event log an issue?

The events you see in the event log are probably just muck from rebooting the device. I'd go ahead and clear it out and monitor for new events. It's normal to see some events/errors on any given day. If you are seeing many errors/events in a short period of time, it would be something that needs more investigation. 


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Expert

Re: CM1000

Yes. Agree with @Nerdburg

 

Events that are time-stamped "Time not established" really don't count as being credible as they are typically just one single event due to the modem not being in synch mode yet. It makes things look worse than they really are until the modem is actually synched with the system and the time server is contacted.



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Frequent Visitor

Re: CM1000

Thanks again for your replies and efforts.  I cleared the event log on the modem and completed the steps identified in the troubleshooting guide.  Unfortunately, same results and no improvement.  Any other suggested next steps?

 

Thanks again!

Frequent Visitor

Re: CM1000

Thanks for all your help so far! Speed is still terrible. Anybody have any ideas?
Frequent Visitor

Re: CM1000

Any help?
Expert

Re: CM1000

I'm going to escalate your issue to the Comcast corporate employees that are available to these boards. You should get a reply here in your topic. Good luck !



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Re: CM1000

Thanks!

Official Employee

Re: CM1000

Hi, cbears1! Thank you for posting in our community. How do you check your speed? What website do you use? Have you tried speedtest.xfinity.com? If yes, have you tried to switch between IPv4 and IPv6 settings? Do you check speed directly from the modem and bypass router? 


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Re: CM1000


@ComcastElla wrote:

Hi, cbears1! Thank you for posting in our community. How do you check your speed? What website do you use? Have you tried speedtest.xfinity.com? If yes, have you tried to switch between IPv4 and IPv6 settings? Do you check speed directly from the modem and bypass router? 


Hi,

 

Thanks for your response.  I am using the speedtest.xfinity.com site.  I've tried both IPv4 and IPv6 settings.  I've checked the speed bypassing the router.  Unfortunately, no luck.  My download speeds are not good.  Thanks again!

Official Employee

Re: CM1000

@cbears1 -  Thank you for letting me know! Let me check your RF signal levels from my side. Could you please send me a private message and include your full name, the account holder's name as it's listed on the billing statement?  Click on my name ComcastElla, then click Send a message.  


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