@Fae This did not change anything. I have investiged further and the problem is, that if you change a device connection, e.g. from TP-Link Switch to AVM router, it takes about 5 Minutes before you...

Hi, i have a strange issue with my TL-SG108E behind my cable box (AVM 6600). Connection is like this: Cable --> AVM 6600 --> TL-SG108E --> NAS, Satelite Receiver, etc. Cable Box is the gateway...