Over on this thread is a very basic documentation discussion regarding the operation of the switch chip and the meaning of master and slave ports.
Normis, the vlan questions and issues that people are asking here are very important. I would suggest also that missing from the documentation is a clear, unambiguous, understandable description of the meaning of the master and slave designation.
Maybe this is clear to everyone else, but the questions on the post referenced above show that at least some users cannot understand how this supposed to work from the existing documentation.