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C6250 Internet Dropping With Strong Signals
C6250-100NAS
Firmware Version: V1.01.26
Provider: Cox Communications
Our internet drops most days a few times while we are attempting to use it. When it occurs, several devices will lose connectivity even when they were previously utilizing the internet. We think that when a device is connecting there is a greater chance for the internet to drop (often with my wife's windows 10 tablet as it frequently sleeps, and the internet drops when she connects).
I can fix the problem by logging into the administration page, clicking on advanced -> connection status, and doing a release/renew cycle. I do NOT have to restart the router or disconnect my devices and the internet will come back on for all of my devices.
We have approximately 10 devices connected at a time, split pretty evenly between 2.4G and 5G.
I called my ISP and they did some diagnostics. They indicated that the signal to my device was strong and suggested that NetGear support may be required. My 90 day service has expired for the modem/router.
I find that there are many instances of DoS attacks on the logs, such as:
[DoS attack: TCP- or UDP-based Port Scan] from 68.105.28.11, port 53
[DoS attack: TCP- or UDP-based Port Scan] from 68.105.28.12, port 53
I'm not sure what other information to provide at this point, I'd appreciate any insight.
You have massive amount of errors in your line.
Here's where I'd start.
Move the C6250 to where to coax enters the home. Remove any splitters, amplifiers, attenuators from the line. Preferably just direct connect it. Then see how it works. Use it for a bit and re-do the modem connections page. If you're errors are gone, its something within the wiring if your house. If they aren't, your ISP needs to check your line running to the house as you have issue with the line.
Your strength is within limits but even that is variable. There should only be roughly 3.5dbmv between channels and you're running from 3.1-8.9dbmv.
so there's some issues with your line.
11 Replies
Cox is very good at blaming 3rd party equipment and saying a signal is fine (even if it isn't). All they're checking for is if they can signal it.
Log into the C6250 and look at the modem connections page. Take a screen snip of this. make sure to get all the details. It shows us signal strength and line issues. Keep in mind that its a snap shot in time.
another question. Do all device drop or only wifi devices? Just curious if its a wifi issue or a connection back to the isp .
plemans , I've attached the current connection information.
I'm not sure if wired connections get the same drop, we don't use them as much. We know we've seen the wired connection drop before, but I'm not sure if it drops at the same time as everything else. I can certainly test next time we see it.
You have massive amount of errors in your line.
Here's where I'd start.
Move the C6250 to where to coax enters the home. Remove any splitters, amplifiers, attenuators from the line. Preferably just direct connect it. Then see how it works. Use it for a bit and re-do the modem connections page. If you're errors are gone, its something within the wiring if your house. If they aren't, your ISP needs to check your line running to the house as you have issue with the line.
Your strength is within limits but even that is variable. There should only be roughly 3.5dbmv between channels and you're running from 3.1-8.9dbmv.
so there's some issues with your line.
