Which statement regarding MUX VLAN is false?

The statement regarding MUX VLAN that's considered incorrect is the one stating that after MUX VLAN is enabled on an interface, VLAN mapping and VLAN stacking can be configured. MUX VLAN, or multiplexing VLAN, primarily focuses on creating a clear separation between different network segments while allowing the use of the same VLAN ID for distinct traffic types.

In MUX VLAN configurations, the intent is often to streamline the setup for multiple logical networks that can share resources while maintaining specific traffic isolation. However, VLAN mapping and VLAN stacking are typically associated with other types of VLAN configurations and may not directly apply after MUX VLAN is enabled.

Understanding the operational limitations and requirements of MUX VLAN is essential, as it is designed to simplify scenarios while adhering to certain structural boundaries. Thus, asserting that VLAN mapping and stacking can be configured alongside this functionality misrepresents how MUX VLAN operates.