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dahabes
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Friday, September 6th, 2024 2:23 PM

Internet speen highly variable

My internet speed has been very slow recently, so I ran some Ookla speed tests today. The first test was before a router reboot and the rest after a reboot.

Network Config: Linksys WRT 1900ACS V2 DD-WRT which is the main router, service DHCP, runs the VPN and has a virtual interface to bypass the VPN.

                           TP-LInk Deco 6e mesh network attached as an access point, used for all high usage WiFI access (computers, tablets).

                           All low usage WiFI devices access the 2.4 GHz band on the router.

                           XFinity internet plan with upload speeds up to 500 Mbps download, 20 Mbps upload.

Results of the tests:

IP_ADDRESS Test Before/After Router Reboot VPN ON or OFF TEST_DATE TIME_ZONE DOWNLOAD_MEGABITS UPLOAD_MEGABITS LATENCY_MS SERVER_NAME DISTANCE_MILES CONNECTION_MODE SERVER_COUNT
[Edited: Personal Information] After ON 09/06/2024 08:36 GMT 50.14 23.28 20 Greenfield, IN 150 multi 4
[Edited: Personal Information] After OFF 09/06/2024 08:35 GMT 0.25 18.61 38 Greenfield, IN 200 multi 4
[Edited: Personal Information] After ON 09/06/2024 08:30 GMT 61.67 24.21 20 Greenfield, IN 150 multi 4
[Edited: Personal Information] After OFF 09/06/2024 08:15 GMT 371.07 24.93 18 Greenfield, IN 200 multi 4
[Edited: Personal Information] After OFF 09/06/2024 08:14 GMT 17.95 22.85 29 Greenfield, IN 200 multi 4
[Edited: Personal Information] Before ON 09/06/2024 08:07 GMT 0.47 12.48 20 Greenfield, IN 150 multi 4

Before the reboot was abysmal. After the reboot I still got a test with the VPN off .25 Mbps upload sandwiched between VPN tests of 50-62 Mbps and one Non-VPN test of 371 Mbps.

I know if I call xFinity they will say there is nothing wrong on their end. I can't make sense of the variability on my side when I just did a router reboot and its internal memory should be pretty clean (memory management is notably horrible in this router and it absolutely needs the occasional reboot).

Anyone have any ideas why this variability could be taking place. Thanks in advance.

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3 months ago

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XfinityThomasB

Official Employee

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3 months ago

Hello dahabes

Thank you for reaching out! Have you attempted to take a reading straight from the modem via ethernet? I was hoping to see if we would be able to bypass the routing system and access points to find out the reading directly out the modem. 

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dahabes

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I finally got around to testing directly through the cable modem. I ran three speed tests. Here are the results:

IP_ADDRESS TEST_DATE TIME_ZONE DOWNLOAD_MEGABITS UPLOAD_MEGABITS LATENCY_MS SERVER_NAME DISTANCE_MILES CONNECTION_MODE SERVER_COUNT
[Edited: "Personal Information"] 09/09/2024 03:36 GMT 191.68 23.12 16 Oak Forest  IL 50 multi 4
[Edited: "Personal Information"] 09/09/2024 03:30 GMT 98.21 23.45 15 Chicago  IL 50 multi 4
[Edited: "Personal Information"] 09/09/2024 03:29 GMT 97.73 23.14 13 Chicago  IL 50 multi 4

All three were "normal", although I'm contracted for up to 500 Mbps and never seem to get anywhere near that, but these results are within a normal historical range.

After that test I reconnected the cable modem to the router and I have no internet connection at all. The router shows it has no IP address from the cable modem. It appears that once I broke the connection to the cable modem, the router can no longer obtain an IP address from xfinity. Nothing on the router configuration changed while doing this, so it seems the router ist kaput. It does not seem logical that this simple connection break would result in this, but additional restarts of the router (including full power off) have had no impact.

(edited)

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3 months ago

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XfinityJamesC

Official Employee

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1.7K Messages

Thank you for checking, @dahabes. Those speeds are still pretty low if your subscription is supposed to be 500 Mbps. If you could send our team a direct message with your full name, the name listed on the account (if different), and the service address associated with your account, I'd be more than happy to look into this for you.

 

To send a Direct Message, please click on the “Direct Message” icon in the top-right corner of the screen, next to the bell icon, click the "New message" (pencil and paper) icon, then type or select "Xfinity Support". Type your message in the text area near the bottom of the window and press Enter to send your message and initiate a live session.

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3 months ago

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EG

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107.1K Messages

@dahabes​ wrote; 

After that test I reconnected the cable modem to the router and I have no internet connection at all. The router shows it has no IP address from the cable modem.  but additional restarts of the router (including full power off) have had no impact.

Did you power-cycle the cable modem after reconnecting the router to it ?

I am not a Comcast Employee.
I am a Customer Expert volunteering my time to help other customers here in the Forums.
We ask that you post publicly so people with similar questions may benefit from the conversation.

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3 months ago

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