Which statement about VPWS is FALSE?

Which statement about VPWS is FALSE?

• A. VPWS is a Layer 2 service.
• B. VPWS emulates a single leased line between two locations.
• C. Each VPWS maintains a MAC FDB.
• D. VPWS customers do not have knowledge of the service provider network.

Answer: (C)

The choice indicating that "Each VPWS maintains a MAC FDB" is the false statement regarding VPWS (Virtual Private Wire Service). VPWS operates at Layer 2 and is designed to emulate a dedicated point-to-point connection, similar to a leased line. In this service, the customer expects to have a direct and constant connection between two sites, which is why it is categorized as a Layer 2 service. While it's true that VPWS allows customers to connect their networks over a shared infrastructure without needing to worry about the underlying service provider network, it does not maintain a MAC (Media Access Control) Forwarding Database (FDB) for each virtual connection as typical Layer 2 technologies would. Rather, VPWS uses the principles of pseudowires, encapsulating packets and delivering them over MPLS or other networks without the requirement of a MAC table per service connection. This distinction is crucial, as the absence of an active MAC FDB means that VPWS does not learn or store the MAC addresses of the attached devices in the manner traditional Ethernet switches do.

The choice indicating that "Each VPWS maintains a MAC FDB" is the false statement regarding VPWS (Virtual Private Wire Service). VPWS operates at Layer 2 and is designed to emulate a dedicated point-to-point connection, similar to a leased line. In this service, the customer expects to have a direct and constant connection between two sites, which is why it is categorized as a Layer 2 service.

While it's true that VPWS allows customers to connect their networks over a shared infrastructure without needing to worry about the underlying service provider network, it does not maintain a MAC (Media Access Control) Forwarding Database (FDB) for each virtual connection as typical Layer 2 technologies would. Rather, VPWS uses the principles of pseudowires, encapsulating packets and delivering them over MPLS or other networks without the requirement of a MAC table per service connection. This distinction is crucial, as the absence of an active MAC FDB means that VPWS does not learn or store the MAC addresses of the attached devices in the manner traditional Ethernet switches do.