Bizarre networking issue

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I’ve been dealing with this bizarre networking issue for years now. It’s impossible to google. On the left is my wifi router. On the right is my local Comcast gateway. Pings are randomly dropping. Internet service is disrupted, as you would expect. Router says it’s disconnected from the internet.

Here’s the weird part. Connections that are established keep working. Zoom calls keep working. WoW keeps working. Discord voice keeps working. NEW connections will fail – probably due to DNS. But some existing connections will also fail. Web pages become intermittent. I was just in a Slack conversation with someone when the problem started and my Slack was disconnected.

Rebooting the router OR the modem will fix it. I believe it will also fix itself after an unknown number of minutes / hours. It happens 1-3 times per week, so it’s pretty fucking annoying.

I asked my network guy at work about it and I don’t think he understood me. He mumbled something about IPsec confusing the Comcast modems. We rarely have VPNs running in my house. I cheat and do my work through Chrome Remote Desktop. One time, however, when the problem was occurring my wife was on a Zoom meeting and the second she got off the problem ceased. This was a one-time thing, however. She was on Zoom when this event began and it didn’t go away when she ended it.

The router is fully up to date.

Any ideas?

Here it is after I rebooted the router -

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E - I have my router set to reboot every day at 4:02am. Not that it helps.

Nothing to do with DNS, you have pings timing out too. Only thing I can think of is P2P like bittorrent exhausting your router with the number of connections it makes, or possibly the router overheating.

Anyway, I would suggest getting comcast to put your modem in bridge mode and see if that helps. If not, time to buy a new router.

My router’s on that list! It’s an Asus RT-AC88U. 😢

If it’s up to date, my guess would be the modem is your problem then. Give bridge mode a shot and if not have Comcast replace it.

Asus stuff goes bad so much more than people realize. That’s why I stopped using them (personal experience).

Yep, I’ve had absolutely garbage experiences with everything I’ve had from Asus.

My Asus routers have been improved immeasurably by my installing custom firmware on them. I’m using FreshTomato on both my Netgear R7000 and ASUS RT-something-something.

I have come to the conclusion that all consumer routers are consumable items. They are not designed to last. They sell into a very competitive space, have aggressive pricing, designs that are more athestic than functional - all of which adds up to cost cutting in componentry and poor heat management, which conspires to kill them in a couple of years. The best run I have had in recent years is with a Nighthawk R7000 with Tomato, but wifi is disabled on it in favour of Ubiquiti AP’s, which helps minimise additional heat.

Agreed. I went through three of them before I decided it would be better to just buy a cheap blade off ebay and install pfsense on it. Probably not even close to as energy efficient but it’s absolutely stable combined with Ubiquiti APs.

I never had trouble throughout years running DD-WRT and Asus Merlin routers. The trick may indeed have been that custom firmware.

Now I’m running a UDM Pro and it’s also quite stable, although it has its own little quirks.

Yah, ASUS makes great hardware, but their drivers are crap in a LOT of instances. They just aren’t a software dev company.