Is it possible to create a configuration where VLAN and PPTP interfaces are bridged together?

Bridging VLAN and PPTP interfaces in MikroTik RouterOS is not supported due to the fundamental differences in how these types of interfaces operate. VLAN (Virtual Local Area Network) interfaces are designed to segment networks at Layer 2 of the OSI model, enabling the organization of multiple logical networks on a single physical interface. On the other hand, PPTP (Point-to-Point Tunneling Protocol) interfaces operate at Layer 2 but are primarily used to establish VPN connections, encapsulating packets from a private network for secure transportation over public networks.

When attempting to bridge these two types of interfaces, issues arise because the bridging process works at Layer 2, and the encapsulated nature of PPTP conflicts with the way VLANs segment traffic. PPTP requires a direct point-to-point connection that does not integrate naturally with the switching characteristics of VLANs.

Other considerations like RouterOS versions and settings may alter functionality or add features, but the underlying conflict between the encapsulation of PPTP traffic and the standard operation of VLANs remains consistent across versions. Thus, the conclusion is clear: creating a configuration where VLAN and PPTP interfaces are bridged together is not possible in MikroTik RouterOS.