@psychedelicu2 ok, how is the software controller? is it connected by cable and has a fixed ip or does it have wifi and a dynamic ip. I still don't understand where the switch gets 192.168.0.98 from....

@psychedelicu2 The switch has the wrong IP, so no wonder there are problems. you need to check why switch has 192.168.0.98. The switch does not get this IP address by itself. Fallback IP Address is...

@psychedelicu2 Why do you have another ip than router, do you have multiple dhcp servers in network or do you have a lage network

@Sissilo Yes I use a DAC cable between switch and router. config is the same interface gigabitEthernet 1/0/28 description "Port28" switchport general allowed vlan 2-3,20,30-31,300,555,678,888 tagged...

@Sissilo yes if you want vlan2 untagged on all 24 ports, yes. but I don't quite understand what you're going to do, why change all 24 ports to vlan2, do you trunk on the sfp ports? how are your trunk...

@cvxliao it's very limited what you can configure on the router, it's only pvid that's it.. so all vlans lurk in the background and create trouble for some devices.