I have just bought a TL-SG108E switch. I wanted to setup link aggregation. At the beginning it was connected to the router with one cable. I have created lag group, it wents fine. And when I connected the second cable from the router to the switch (to the second port of LAG1 group), the switch drop all connections or being really-really slow (even the switch being unavailable on management IP).
Any idea what could have happened ?