Ethernet over Multi-protocol label switching (EoMPLS) is a tunneling service that transports what type of frames over an MPLS network?

Ethernet over Multi-protocol Label Switching (EoMPLS) specifically focuses on the transport of Layer 2 frames through an MPLS network. In an MPLS environment, data packets are encapsulated with labels that allow for efficient routing without having to read the entire packet. Since EoMPLS leverages the capabilities of MPLS to transport Ethernet frames, it maintains the properties of a Layer 2 network, including features like bridging and switching.

MPLS operates primarily at Layer 2.5, creating a virtual circuit between two endpoints. This means that EoMPLS encapsulates Ethernet frames and carries them over the MPLS backbone as if it were just another Layer 2 protocol. This is beneficial for service providers seeking to offer Ethernet services over their existing IP/MPLS infrastructure. By ensuring that the integrity and structure of the Layer 2 frames are preserved during transport, EoMPLS allows for seamless Ethernet connectivity and offers services such as virtual private networks (VPN) or point-to-point Ethernet connections.

The importance of distinguishing between the layers becomes clear when considering how different network protocols function. Other layers, such as Layer 1 or Layer 3, do not reflect the same functionalities as EoM