Somebody any idea?

@Virgo OK, but it is changing between VLAN21 and VLAN22 How can I be sure, that it is for example VLAN21?

Hi, I'm trying to setup a VLAN configuration and don't know, how to... 1. I configured Port 16 as uplink and set my VLAN (21, 22 and 23) as tagged to this port 2. I set Port 1 as untagged to VLAN21,...