I am trying to setup a 2nd VLAN on my network using all ports on the switch. From what I understand I need to create the VLAN (VLAN 3) and add ports to it then tag them and then they can be a member of both VLAN's. When I remove a port from the default VLAN and add it to VLAN3 i can then tag it but not add it back to VLAN1 which is what i thought tagging a port allowed. Am I doing something wrong or missing something. i am using the web interface as i don't know the commands as well as I would like.
My goal is to create 2 VLANs so i can add wireless AP's with SSID's on the 2nd VLAN using a different subnet for mobile devices to access the internt without using up all my current IP addresses.
Switches are Foundry FastIron SuperX running software version 03.0.01cT3e1