TrevorHall

I was thinking that, however I have just checked the other 19 Pro ap's and all report between 70 and 99% Tx Dropped. That can not be right. 99% loss on some ap's

Hi Thanks for replying Yes the AP has been restarted a few times this week. I am going to check the switch powering it to see if its reporting any issues. My brain is saying maybe it is not running on a true 1gb full duplex line. It is powered by a ubiquti tough switch which I am not at all impressed by! Also I just moved the mouse over the channel bar to see its reporting Tx Retry 82.9% dropped

Good afternoon I have a unifi wireless network consisting of 28 AP's a mix of AP-AC and AP-AC-Pro. I have a separate SSID setup for chromebooks. 2g is set to HT20 5g set to VHT40 channels and power all set to auto. On the pro versions I have band steering enabled set to Prefer 5g. Controller version 5.5.24 Ok so here's what happens. The wifi has been fine all morning, had a couple of locations with 28 - 33 devices per AP no problem at all. Then sudden in the last hour no one can log on a chromebook, you type your username in but it does not take you to the password screen, no error, nothing. If I leave it several minutes it reports the wifi connection is not available then connects to the chromebook SSID but still will not allow a logon. Ok so first thought was loading? Checked the AP 40% channel utilisation on N/B/G and 13% on N/A/AC. This is higher than normal, but should not cause a total outage. Ok second thought, DHCP/DNS issue? Checked. DCHP had a couple of BAD_ADDRESSES these seem to be because of chromebooks. But only had 6 of those so should of only affected 6 - 12 devices. DCHP and DNS logs are totally clear, no issues. Ok third thought, internet connection is overloaded. We have a 300/1000 line. It was using 30mbit down, tons of capacity left Ok fourth thought, the internet filter, an ageing Dell Sonicwall, maybe that could not handle all the requests? checked the load 31% cpu load. Checked a wired pc, full speed internet, speedtest result 266 down 299 up. Its not just chromebooks. Wireless laptops, iphone can not connect either. If I move away from the affected room to connect to another AP I do then connect. Does anyone have any idea's? Something I should look at? This has been on going for a week and is stressing me out. The data says there is no problem, but there is!