Unstable work of Wi-Fi access points (AP) in a large network

Good afternoon.

I administer a network of 200+ PCs.

Almost half of them connect to the local network via wi-fi. But recently, for some reason, those devices that connect via Wi-Fi began to lose connection (in the list of networks AP is visible (AccessPoint) and can not connect) after about 20 minutes connection is restored by itself (for a while and then loses it again) ….

Devices connected via Ethernet have no problems! Tried to change channels in the settings of the AR, thought maybe it is not possible to get IP from the server (manually prescribed) IP gives the main server in the organization running Win2003 (without AD). The ARs (which are glitching) are far away from each other (not overlapping). The APs are from different manufacturers (D-link Cisco Asus).

H.Y. when this glitch occurs – at the same time you can freely reconnect to the neighboring AP (located in the same local network), but if you try to connect to the one that glitched – it will first ask for a password (wi-fi key) then immediately – the standard Windows message in the lower right corner “Windows failed to connect to Cisco233”.

I’m already starting to think that maybe the radio channel is heavily polluted in this 2.4 GHz band (around the building there are residential houses in which there are also many home wafers – which are visible …).

Or something with Server2003 … which is unlikely, because those who are on cable – do not experience problems. (and when AR glitches – I can get into its admin from the server) … I don’t know what else could be????

Answer

Good afternoon. I also think that the problem is not in the server. Everything works on the cable, other access points work. This is enough to rule out problems on the server side.

I wonder how other devices behave when connected to an access point that has “glitched”. No device connects? Have you tried different options? Maybe it’s just some problems on a particular device.

About the interference in the 2.4GHz band, it could be. Especially since there isn’t a specific problem, at a specific place and time. And this already looks like interference.

You need to look, check, connect other devices. Do you have automatic channel selection on the access points?