Hey Janmiguel,
thanks for the reply.
Yes on this device only. A different device on a different port is working fine.
I can´t swap the devices now. I could do that if needed, by it´s working so far.
I did indeed have the lan cable changed, but it was done after the port turnt itself on again.
During that time, no cable was touched.
I will have an eye on my devices status and give further information/do some more troubleshooting myself.
Greetings