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Every day at the same time, my internet dies for 1 minute. How do I investigate?

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Re: Every day at the same time, my internet dies for 1 minute. How do I investigate?

#11

Post by ayewo »

1. Start the ping command at 3:39pm and leave it running until 3:41pm then make a note of whether packet losses start at 3:40pm. (E.g. "ping yahoo.com" on Unix or "ping -t yahoo.com" if on Windows).

2. If there are packet losses, then you have your answer: the issue is from your ISP.

3. If there are no packet losses, then you'll need to look closer at your network. Check to see if some hardware on your network might be performing a reboot at the 3:40pm mark.

Re: Every day at the same time, my internet dies for 1 minute. How do I investigate?

#12

Post by njsubedi »

niklasmtj wrote: post #2

Did you check if your public IP changes after this minute? I don't know if this still happens but back in the past my router did this every 24h to get a new IP.

I can confirm this. The time is around 7:00PM and the IP address changes, and I have to log in again to some websites because my IP has changed. Downtime is approximately 2 minutes.

Re: Every day at the same time, my internet dies for 1 minute. How do I investigate?

#13

Post by kratom_sandwich »

Are you familiar with the "Reply all" podcast? They have a "recurring segment, called 'Super Tech Support' [in] which [...] the Reply All team [...] takes on odd or especially complex tech support issues that the listeners or friends of the hosts have encountered." Not sure if your situation qualifies, though.

[1] https://en.wikipedia.org/wiki/Reply_All_(podcast)

Re: Every day at the same time, my internet dies for 1 minute. How do I investigate?

#15

Post by pmiller2 »

niklasmtj wrote: post #2

Did you check if your public IP changes after this minute? I don't know if this still happens but back in the past my router did this every 24h to get a new IP.

This was my thought as well. It sounds like a 24 hour DHCP lease expiring.

Re: Every day at the same time, my internet dies for 1 minute. How do I investigate?

#16

Post by fisherjeff »

dickfickling wrote: post #6

MY INTERNET HAS BEEN GOING OUT AT 3:40pm PT TOO! Sorry for the all caps. I just scrolled through my texts and saw the “internet out?” texts are at the same time. Hopefully that means it’s a provider issue behind us. Wonder what we have in common? - South Lake Tahoe, CA - Spectrum Gig internet - Asus Zenwifi mesh

Hmmm my Spectrum Gig in OR doesn’t go out at 3:40p but it does pretty much every day at 1pm. I was similarly excited to see this post...

Re: Every day at the same time, my internet dies for 1 minute. How do I investigate?

#17

Post by netsharc »

davidro wrote: post #14

Change your DNS servers.. I use openDNS, but there are lots of other choices. If the Pi isn’t in use set it up as a Pi-hole (DNS server / ad blocker), so you’re not use your isp provided router for DNS.

DNS probably has nothing to do with disconnects, this kind of random suggestion unrelated to the problem always makes me think of the Futurama Robot Judge: https://www.youtube.com/watch?v=Jqn8HB2w2Fs (skip to 0:15 for the punchline)

Or maybe it is related, in which case I'll eat at a hat.

Re: Every day at the same time, my internet dies for 1 minute. How do I investigate?

#18

Post by onionisafruit »

fisherjeff wrote: post #16
dickfickling wrote: post #6

MY INTERNET HAS BEEN GOING OUT AT 3:40pm PT TOO! Sorry for the all caps. I just scrolled through my texts and saw the “internet out?” texts are at the same time. Hopefully that means it’s a provider issue behind us. Wonder what we have in common? - South Lake Tahoe, CA - Spectrum Gig internet - Asus Zenwifi mesh

Hmmm my Spectrum Gig in OR doesn’t go out at 3:40p but it does pretty much every day at 1pm. I was similarly excited to see this post...

In my neighborhood it’s shortly after midnight. Or so I’ve heard from my kids and neighbors. I’m never awake to notice.

Also Spectrum, but no gigabit here.

Re: Every day at the same time, my internet dies for 1 minute. How do I investigate?

#19

Post by wjnc »

xgbi wrote: post #9

Launch ´mtr google.com’ on one of your devices (preferably connected via Ethernet to your router) a few minutes before the cut off, and watch what happens when the cut occurs. It will show you exactly which equipment on the route starts dropping. Although I suspect your ISP has a 24h lease and your modem renegociates at 3:40 everyday

So then the trick is to forgo internet by disconnecting power from a few minutes before that time to the middle of the night and get power back? I do feel for the ISP's with this setup because the right thing to do would be to write in the installation manual: "Only install in the deep of night".
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