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Every day at the same time, my internet dies for 1 minute. How do I investigate?
51–60 of 141 posts
Re: Every day at the same time, my internet dies for 1 minute. How do I investigate?
#52I had a similar problem once. The issue ended up being a router power cycle which occurred at the same time every single day. It took several days to diagnose. First, during an outage I tried to login to my router. Just because the internet was down the local area network should have been up. I couldn’t access the admin panel for several minutes. Next, I started observing the lighting patterns on the router. I came to realize that it appeared to be restating itself for no good reason. In the end my internet provider replaced the router which fixed the problem. Tech support was pretty stumped. A few people on the internet complained about the same issue with the Fios router model I had (don’t remember which one it was). Good luck! Let us know what the problem was if you figure it out.
Re: Every day at the same time, my internet dies for 1 minute. How do I investigate?
#53One thing is to find out if something has a midnight bug, but has its internal clock set to something other than your actual time zone. I once committed a midnight bug in a manufacturing plant, and it took me a while to diagnose, because none of the PC's were networked, and I had never bothered to set the time on them. I puzzled over it until one of the operators said: "It always happens at the same time every day during my shift."
Disclosure: I'm smarter now.
Re: Every day at the same time, my internet dies for 1 minute. How do I investigate?
#54Launch ´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".
it depends. depending on the dhcp implementation on the server side you may have the same problem (ie while you get a new lease it may expire at the same time). unlikely but I’ve seen some stuff when it comes to dhcp
Re: Every day at the same time, my internet dies for 1 minute. How do I investigate?
#55I had a similar problem once. The issue ended up being a router power cycle which occurred at the same time every single day. It took several days to diagnose. First, during an outage I tried to login to my router. Just because the internet was down the local area network should have been up. I couldn’t access the admin panel for several minutes. Next, I started observing the lighting patterns on the router. I came t…
I had a similar problem with my Asus router. Traced it back to it being scanned for UPnP every day at the same time. Something about the scan caused the router to crash and reboot. Disabled UPnP and the problem disappeared.
Re: Every day at the same time, my internet dies for 1 minute. How do I investigate?
#56Probably not your issue: Internet: Old TV caused village broadband outages for 18 months https://www.bbc.com/news/uk-wales-54239180
I was thinking of this too.
Re: Every day at the same time, my internet dies for 1 minute. How do I investigate?
#57Reminds me of this news article: Old TV caused village broadband outages for 18 months https://www.bbc.co.uk/news/uk-wales-54239180
Oy! You got a license for that broadband jammer mate?
Re: Every day at the same time, my internet dies for 1 minute. How do I investigate?
#58It's probably the 24 hour IP reset, as many commenters have said. You could try time-shifting it to a time when you're normally asleep.
Re: Every day at the same time, my internet dies for 1 minute. How do I investigate?
#59Launch ´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
Actually it seems that it is not renegotiating everyday: it is expiring and re-requesting. The way DHCP 'should' work is that when a client is part-way through the lease it should try to renew the IP it already has: * https://en.wikipedia.org/wiki/Dynamic_Host_Configuration_Pro... * https://tools.ietf.org/html/rfc2131#section-4.4.5 This allows the client to (hopefully) keep extending the IP it has so that a re-IP doe…
I had this exact issue in 2008 in SF on Comcast Business.
The lease would be dropped and renegotiated every few hours, we could notice it because our SSH tunnels would get torn down.
What was annoying was that the business plan had a static IP associated with it, presumably managed by their DHCP setup.
It took weeks to convince Comcast the issue wasn’t in our building, and moments for them to fix once they “got it”.
Re: Every day at the same time, my internet dies for 1 minute. How do I investigate?
#601. Unplug your Router at some other time, for at least 5 minutes, long enough for your ISP to notice it's absence and give you a different IP address. If your 3:40 PM changes, it's the 24 hour expiration of your external IP.
2. Do a ping 8.8.8.8 from your Linux machine (Raspberry Pi) or ping -t 8.8.8.8 from windows, and watch what happens at 3:40 PM
3. As others have said, turn off uPnP