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Intermittent Internet Drops, Firewall Logs

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New Poster

Intermittent Internet Drops, Firewall Logs

Hello,
I’ve contacted support multiple times and had 2 tech visits about this issue with no luck. My internet will have random drops that last about 8-15 seconds. I looked at the logs of the firewall of my xFi gateway, and noticed these logs that coincide with the drops.

“FW.IPv6 INPUT drop”
“FW.IPv6 FORWARD drop”

I thought this was a DoS attack, but my gateway has been replaced and has a different IP, and the issues persisted. Is there any solution to this problem?
Expert

Re: Intermittent Internet Drops, Firewall Logs

What do the modem's signal stats look like ? Try getting them here http://192.168.100.1 or here http://10.0.0.1

Please post the *Downstream Power Level*, the *Upstream Power Level*, and the *SNR* (Signal to Noise Ratio) numbers.

What is the exact make and model number of the modem ?

Is this a WiFi connection ?



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New Poster

Re: Intermittent Internet Drops, Firewall Logs

Hello,
I am unable to post the signals but have had 3 techs and support say that all the signals are as they should be. The gateway is the default Arris TG1682G.
Expert

Re: Intermittent Internet Drops, Firewall Logs

It would really help to see the stats... If you can't post pics here,  you could try hosting them at one of those free third-party pic hosting sites like Imgur or Photobucket and post the link to it here.

 

Again, is this WiFi ?

 



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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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Official Employee

Re: Intermittent Internet Drops, Firewall Logs

Hello, 


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Official Employees are from multiple teams within Comcast: CARE, Product, Leadership. We ask that you post publicly so people with similar questions may benefit from the conversation.
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Contributor

Re: Intermittent Internet Drops, Firewall Logs

For what's it worth, I have the same gateway and always have had rock solid performance,  but I have always set the channels etc manually, 3 days ago I set it to automatic and started experiencing similar events, I switched back to manually selecting and it cleared up

Contributor

Re: Intermittent Internet Drops, Firewall Logs

This is super similar to the T3 timeouts I'm seeing on my network. The network drops from them for around 8-15 seconds, and we've had 2 techs out and no-one seems to have a clue what's going on here.

 

In my case I'm seeing the T3 time-outs on my modem error logs. It's happening a bunch during busier times of the night, and it's really disruptive to anything that cannot buffer for 8-15 seconds of disconnect (gaming, low latency streaming, etc)

 

Where are you located? I'm in the Bay Area, CA. Wondering if you're in a similar region, and if this could be a regional issue.