how does mpls work
How Does MPLS work? MPLS is a framework defined by the Internet Engineering Task Force (IETF) that allows for the introduction of label switching to Layer 2 and Layer 3 protocols. MPLS works by taking advantage of the fast switching mechanism of Layer 2 network combined with high scalability, availability and manageability of Layer 3. Instead of using traditional Mac address- or IP address-based packet forwarding, MPLS uses unique labels to attach to each packet as it enters from the end-userâs network to the MPLS network.