After a VLAN is created, four types of information can be modified without the need to recreate the VLAN:
To change the VLAN name, color identifier, or routing status, click in the appropriate fields in the VLANs Basic tab and then click Apply .
To change the VLAN member ports, follow this procedure:
The VLANs Basic tab refreshes with the correct port numbers listed in the PortMembers field.