Super User Asked by ThatDataGuy on February 11, 2021
I have an unlimited 10Gbps consumer broadband fibre connection in Switzerland. I have noticed random loses in connectivity to the internet, both on wifi and wired local connections. What steps can I take to diagnose the issue?
Symptoms:
All symptoms occur on all clients (windows 10 machine, android phones, LG TV etc) at random times. Its not specific to any external domain.
The issue has been present for many weeks now.
My setup:
Steps I have taken so far:
Tools:
In the end I was able to pins this down to two things:
Poor wifi performance of the router - fixed by adding an additional access point.
A bad cable connecting the PC to the router - fixed by installing a much shorter CAT7 cable.
Sometimes it pays to replace hardware starting with the cheapest items first.
Answered by ThatDataGuy on February 11, 2021
Sounds like you may have intermittent packet loss. To check this, you need a permanent monitoring solution, like SmokePing. You could target Google DNS and Cloudflare DNS with this monitoring system. They are highly available. It’ll look somewhat like this:
(As you can see, I have quite some packet loss to Google DNS every now and then.)
You can run this software on your Raspberry Pi. The system running this software should have a wired network connection.
Once you have identified packet loss, you could then pester your ISP about it or just accept that, unless you have an enterprise SLA, this just happens.
Answered by Daniel B on February 11, 2021
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