Hello Daniel. Thanks for your answer.

I did everything as video shows but my question is how to connect this switch to another one by a trunk.

In other switches I can find mode trunk or acces.... but not in this switch.

Being more specific... I have one layer3 switch giving DHCP with different pools.... then I have this Powerconnect 2824 where there's 3 different vlans..... then it should send frames to a final switch. Both, begin and end switches have trunk mode configured and of course same vlans.

In this moment I cannot achive the simple goal that end user receives DHCP.

Thank you Daniel!!

My main doubt is... how trunk port must be treated? Should it be tagged or blank?

As I understand, a trunk port must be tagged for every vlan. In newer switches there's trunk mode but not on this 2824 (I cannot choose trunk or general). So the question is how can I set one port as trunk when I do not have trunk mode on my switch?

I think I did everything fine but maybe you have a clue about where to find a solution.