Analysing networking/internet connectivity issue.

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I'm running an opnsense router, pihole and Asus AIMesh network with 4 access points. Recently (past couple of months max), we've been experiencing occasional drops in connectivity such that we have no internet across all devices for 20-30s.

I've installed pinginfoview and have been pinging google and my server (via internal IP) for the day, every 5s. Today we've had 7 failures, at random times with approx 1hr-1hr10m between them (no obvious pattern). I've now noticed, however, that my device is reporting failures to google and my server at the same time, which I'm thinking now precludes an opnsense/pihole issue and is pointing towards my AIMesh network being the problem.

I'm just about to try and find some log files for the primary node, until then I'd appreciate any advice for diagnosing the issue!
 
What happens if you run your monitoring (simultaneously) on something hard wired to the router? Does it happily keep pinging out to the internet and your server while the Wi-Fi client fails?
 
Going to ask the obvious, you've restarted all the devices, and checked to see if any of them performed some random upgrade without you requesting it?
 
I think this answers all questions:

I have a network device hardwired to the primary AIMesh node via a secondary node (192.168.0.100 (Device) - 192.168.0.4 (secondary node) - 192.168.0.3 (primary node)). 192.168.0.3 is hard wired to 192.168.0.1 (opnsense router).

I get drops when I ping from the device to my server (X.X.X.225, hard wired to X.X.X.1) as well as google. At the same time. So the issue must be in the Asus device providing zero network traffic for short periods. Unfortunately, Asus logs are not very extensive and are not showing anything obvious at the time I have an issue....
 
I have a network device hardwired to the primary AIMesh node via a secondary node (192.168.0.100 (Device) - 192.168.0.4 (secondary node) - 192.168.0.3 (primary node)). 192.168.0.3 is hard wired to 192.168.0.1 (opnsense router).

Any chance of a diagram?

It does sound like you're sitting everything behind ASUS though which can sometimes be.... less performant than you'd want. Mesh could be reworking itself out, if you have some nodes cabled and others meshed, there's a chance the mesh could be looping you at times and needing to resort out it's topology.
 
I'll see if I can throw a diagram together....

In words:

Virgin modem -
opnsense -
primary AiMesh node -
second node -
fourth node
third node

Edit: struggling to format this. Primary node has second and third nodes hardwired, fourth node is of the second. All of this is hardwired.

It's fairly obvious that the primary node (or AiMesh) is the issue. I either need to find detailed logs on those devices or remove all the config and start again.
 
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