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Forum Discussion
C6900 periodic poor download/upload speeds
I have been having issues with download/upload speeds for a number of weeks. When I do the speed test, the numbers are all over the place. I had a Comcast tech out week before last. I was told he ...
The C6900 is a cable modem/router.
While many questions about routers are generic and could be answered anywhere, some things need specialist knowledge.
You might get more help, and find earlier questions and answers specific to your device, in the appropriate section for your hardware. That's probably here:
Cable Modems & Routers
You might like to search there for messages related to your problem.
I will ask the Netgear moderator to move your message.
In the meantime you could visit the support pages:
Support | NETGEAR
Feed in your model number and check the documentation for your hardware. Look at the label on the device for the model number.
Check for various troubleshooting tips.
You may have done this already. I can't tell from your message.
I mention it because Netgear stopped supplying printed manuals and CD versions some years ago and people sometimes miss the downloads.
Thank you for the reply and pointing out I posted in the wrong forum. I am sorry about that. I don't normally make that kind of mistake.
I have consulted the Netgear site for solutions. They offer nothing related to troubleshooting other than referring folks to their ISP.
I've also found a couple of other posts regarding this same issue, but it's not very clear to me, that the issue is related to the line of modem/router.
ossodiseppia wrote:
Thank you for the reply and pointing out I posted in the wrong forum. I am sorry about that. I don't normally make that kind of mistake.
Easily done, especially given the messy nature of this place.
I just wanted to point you in the direction of messages that might cover your hardware.
I appreciate the help. I looks like my thread has been moved. Hopefully, Ill get some feedback.
I'm just about done getting the new modem/router set up. I have a few things that require a fixed IP. So, this gave me an opportunity to put them all next to each other.
I am still getting these strange errors, even on the new modem/router. It's funny, they have a date of 1970-01-01. It's bugging me and I hope someone will chime in.
I see lots of Criticals in the Event log that the ISP needs to review and resolve.
Have the ISP check the signal and line quality UP to the modem. Be sure the ISP provisions the modem correctly.
Be sure there are no coax cable line splitters in the between the modem and ISP service box.
Be sure your using good quality RG6 coax cable up to the modem.
Start with removing any amplifiers, signal attenuators, or splitters from the coax.
From there check the line for kinks, damage, moisture in the line.
Check the connectors for improperly made ends, foil touching the copper coax line, loose connections, bad/old/cheap connectors, or corroded connections. Replace them if you do.
Be sure to power OFF the modem for 1 minute then back ON.
https://community.netgear.com/t5/Cable-Modems-Routers/General-info-and-Troubleshooting-for-Cable-Modems/m-p/1530376#M12853
https://kb.netgear.com/24311/Power-level-guidelines-for-a-NETGEAR-cable-modem-router
https://www.duckware.com/tech/solving-intermittent-cable-modem-issues.html
https://highspeed.tips/docsis-events/
