Configuration have 6 VLANs on 6 port connected to Intel NUC. Sometimes after 3 months of using this configuration the following situation was observed: 6 port is down (led is off) Interface not reachable. But if switch on other port in this switch group and move VLANs to it all works perfectly. Switch cabble to 6 port, but it still off. Reboot does not help. Don’t have any weird logs. After day I switched it back to 6 and it works. This happens a third time in a week. Please, tell me what could be the reason. Best rgrds!