@mwo The problem is solved. It was enough to set the default route at the switch. Destination: 0.0.0.0 Subnet Mask: 0.0.0.0 Next Hop: ip address of the router Distance: 1

@mwo Thanks for your reply. A1. I assumed that if the switch is uplinked with the trunk from the router it should "have" all VLANs (also the one used as management). Is my assumption wrong? :) A2. No...

Hi, Do the JetStream TL-SG3428X support the management VLAN? I've set the vlan interface under --> L3 Features --> Interfaces --> Add but the device doesn't respond on this address.