Hello,
On our wifi network we recently encountered many interrupts, each one lasting for 15 seconds. They occurred irregularly but very frequently. Sometimes with intervals less than one minute, sometimes 10 minutes.
After I disabled the STP protocol on the Mikrotik switch, the problems disappeared. Disabling this feature did not result in broadcast storms.
The diagram below shows the part of our network having the problems.
The Ubiquiti radio on the left is coupled to the internet, and feeds, via a Miktrotik switch, a point-to-point link, and then to an AP serving a number of clients. These two wifi networks have a different SSID and, normally, operate on the different channel. The client stations on the right are configured as routers, all other stations are configured as bridges on the same subnet.
A radar event caused the channel of the AP_2 to shift to another frequency. Unfortunately the same as the frequency on which the AP_1 operates.
immediately after this DFS event, the radio AP_1 showed the 15 second connectivity drops.
The two wifi networks operate with a different SSID and stations from the SSID_2 network cannot connect to the AP on SSID_1. My understanding was that STP operates at OSI level 2 - the loop, if one would exist, would be on level 1.
Is my understanding incorrect?