The port-specific (PSTag) VLAN tag allows tagged VLAN ports to be configured with tag values. When the tag is not configured, it is implicit that the tag of the tagged port is the tag of the VLAN. We call the tag of the port the "port tag", and the tag of the VLAN the "base tag". The port tag is used to determine the eligibility of the frames allowed to be part of the VLAN. Once the frame is admitted to the VLAN port, the base tag is used. From a functional standpoint, the frame tag is rewritten to the base tag.
ExtremeXOS 31.2 adds support for Virtual Extensible LAN (VXLAN) adding and deleting PSTag ports for Tenant VLANs.
ExtremeSwitching X670-G2, X465, X870, X690, X590, X695, and 5520 series switches.