When this is true(1), the device will discard incoming
frames for VLANs that do not include this Port in its
Member set. When false(2), the port will accept all
incoming frames.
This control does not affect VLAN-independent BPDU
frames, such as GVRP and STP. It does affect VLAN-
dependent BPDU frames, such as GMRP.
The value of this object MUST be retained across
reinitializations of the management system.