K

Visitor

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3 Messages

Wed, Nov 3, 2021 10:05 PM

Constantly Seeing 1/10 of Expected Speeds on XB7 Via Ethernet

Hello, apparently I have stumped the technicians at Xfinity.  I have the Xfinity XB7 Gateway with promising 1.2gbps speeds.  I CONSISTANTLY receive exactly 1/10 of this (about 90-100 mbps) every time I perform a speed test.  Before anyone asks, here are a few bullet points:

  • I have witnessed 950gbps speeds before via my ethernet connection (which is what I would expect) so I know my hardware setup is capable. I replaced my current XB7, thinking it was the issue and immediately began receiving 900+ mbps speeds for a couple of hours. The next morning, I was back to 90-100mbps speeds.
  • The computer I constantly test speeds with is a Windows 10 64 bit machine, connected straight to the orange port of the XB7 via a CAT5 ethernet cable – no switches! My NIC port is capable of Gigabit speeds.
  • A Xfinity tech came out recently and replaced several Coax connections to reduce “noise”. This did not help.
  • Another Xfinity tech tried to help me over the phone by changing setting on his end but was unsuccessful.
  • On the Xfinity Home app, my XB7 Gate always sees more that 1gbps coming in so that is not a problem.
  • I have fiber optic to my home and every room in the house has a dedicated ethernet run.
  • My Wireless speeds are actually FASTER than my ethernet speeds. Getting about 300 mbps via Wifi when tested on my iPhone.
  • Performed windows settings via the command prompt but nothing helped.

So, my questions are, why am I constantly seeing exactly 1/10 of what I should be?  How is it that I have witnessed 900+ mbps speeds before but now I don’t, without anything changing?  Any help and advice would be greatly appreciated.  Thanks!

jlavaseur

Problem Solver

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648 Messages

3 m ago

So, i get that from time to time, make sure the ethernet cable is inserted ALL the way in the the ethernet port, at both ends of the cable, also i have had a ethernet cable go rogue on me, it alternated between 1400 Mbps and 100 Mbps, i replaced the cable and no issues, also you can look at the back of the Xb7, if the effected port has a amber light next to it instead of green, it is connecting at 100 Mbps...

Visitor

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3 Messages

@jlavaseur 

Thanks for the respond.  I checked the connections and they're all good, however, the light on the back of the Xb7 does flash amber, not green.  How can I fix this?  Thanks.

jlavaseur

Problem Solver

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648 Messages

I would try a different Ethernet cable, cat 6, new if possible, until then I would take the Ethernet cable completely out, reinstall it, reboot the Xb7, hopefully it will negotiate the correct speed, if not try a different port on the back of the Xb7….

Official Employee

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3.1K Messages

Hello @Kpoman! Thanks for taking the time to work with the community here to try and figure this out. I'd like to take a closer look on our end to try and narrow down what may be the cause of these poor speeds. Please send us a Direct Message with your first and last name as well as your service address so we can assist.
To send a Direct Message, please click on the chat icon on the top right of this page, next to the bell. Make sure to send the message to our singular handle "Xfinity Support" and we will get back to you ASAP.

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Visitor

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3 Messages

@jlavaseur Looks like your answer worked!  I simply just changed to a different port (green light now) and now I'm getting the speeds I should be.  Thanks!

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