mercredi 21 octobre 2020

Trying to debug Wi-fi issues

Our setup is as follows. We have fibre to the cabinet which means that there is a fibre connection to a box in the village and then our signal goes over copper and aluminium wires for the last 2 miles or so to our house.

We have a wireless router which was provided by our ISP, one of these:

https://accessories.talktalk.co.uk/p...description/41

On a good day, with a following wind, the router will synch at 10-12 Mbps

Two devices are connected to the router by cable
- my work PC
- a device which provides a 4G signal for the house

There are two wireless networks, with the same name and password. One is 5GHz, the other is 2.4GHz. We have a range of devices, phones, tablets, Firesticks, PCs, TVs, Lightbulbs and so on which connect to the wireless network, maybe 20 in total, maximum 10-12 at any time.

The symptom we have is that several times a day, the broadband slows to a near stop, sometimes for seconds, sometimes for hours. The router does not lose its connection and Citrix sessions do not drop but no device in the house can get any useful bandwidth and we also cannot make phone calls on our mobiles (which are reliant on that signal provider).

This is true for both the devices connected to the WiFi network and my work PC which is directly connected to the router.

In the past, if the problem did not resolve in 10-20 minutes I would reboot the router which almost always meant that we had acceptable (for us) service for a while. Recently the times between reboots have been getting shorter and the frequency and length of issues have been getting worse.

I recently found that by switching off the WiFi when the problem arose, within a couple of seconds my work PC (connected by wire) had a perfectly good broadband connection and then once the WiFi was turned back on, things are fine for a few hours.

This leads me to suspect that *something* is wrong with the WiFi but I'm at a loss to be able to tell what it is. I can see the devices connected to the WiFi network but I cannot see the traffic levels.

As far as I know none of the devices are doing anything much unless we're using them but could there be some contention which is causing the router to get overwhelmed to the extent that wired connections are also blocked.

We're sufficiently remote, and the timing of the problems are such that there's no interference from neighbours' WiFi or attempts from external devices to connect.

Any suggestions for troubleshooting would be most helpful :o.


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