Hello,
I have a MikroTik RB4011iGS+5HacQ2HnD in use, which I monitor with ZABBIX. Last Friday, ZABBIX reported to me for the first time that WLAN1 (5GHz) was no longer available or was down.
I logged on to the device and checked the message. There were no entries in the log. A restart did not bring any improvement at first, only after I shut down the router and disconnected it from the power supply for a few minutes was WLAN1 displayed as active again (running ap).
I updated the firmware to the current version 18.2. Yesterday, my ZABBIX server again reported that the WLAN1 interface was down. It ran for almost 48 hours without any problems and then the interface simply disappeared.
I was able to find entries from 2019 in the forum, but no solution.
Any ideas?