Hi all, first time posting for tech support on lemmy!

I’ve recently switched ISPs to now have a gigabit connection at my home, but we’ve been experiencing some weird issues with it. When i run a speedtest, I get my full gigabit (or close enough) speeds and most of the time it works perfectly. But ever so often, it just completly drops all packets. When downloading a file for example it can randomly drop the speed to 0 b/sec and you have to restart the download in order to get it working again. Same with website loading, when it happens when loading a website, just half of the website gets loaded and I am missing images/styling/etc.

Now I run my own EdgeRouter X behind my ISP provided router. I have a nagging feeling this could be causing my issues, but with my previous ISP I was running the same setup and it worked flawlessly (albeit with a different ISP provided router).

Have any of you experienced something like this before?

Edit: thanks for all the quick responses everyone! I will look into your suggestions and update the post if/when I’ve found my solution.

Edit 2: Fixed the problem. As always, when in doubt, it’s the DNS. My ISP router did not come with any DNS settings preset. I set it to the same DNS as my EdgeRouter and my problems went away. I hope this helps some of you facing the same issue. Thanks for your responses!

  • qprimedEnglish
    2•11 months ago

    is your ISP double NATing you? specifcally, are they providing a public IP address to your EdgeRouter? ISPs will often provide a residential router/modem combo and their router will distribute a private IP to your router - a double NAT. double NAT is usually not a huge issue, but its not nice to live behind one. if the ISP confirms that their equipment is bridging (and not routing), then the double NAT issue goes away.

    all of the symptoms you describe sound like intermittent packet loss and there are lots of possible reasons for this including poor signalling from your ISP and misconfigured routers (possibly your ISP customer premesis equipment)

    as long as your have verified good LAN cabling, including the ISP CPE to your router (you indicated a switch to GigE+ speeds - that needs good copper), the fact that you get this possible packet loss from devices behind your router but not between your router and the ISP CPE may mean your router and the ISP CPE are not playing well together due to double NAT.

    hope that helps.