I think it depends on what version and flavor of IOS you are running. I threw your config up in packet tracer and before it allowed me to trunk the interfaces between the two switches it screamed that I needed add the dot1q encapsulation before I cou...
The config is correct for the end device, just don't forget 'no shutdown' =)
As for the trunk ports you will need to include dot1q encapsulation so the switch knows what vlan the packet belongs to. So, the config will look like this:
interface gi0/x
...
Hey vogelspinne24,
Yes, trunking will work with the Cisco SG300/200 series switches.
1) If you configure port 19 on switch 1 and 3, set trunk ports between switch 1 to 2 then switch 2 to 3 that allow vlan 2, yes traffic will flow.
2) You are correc...