MPLS is a very different approach to moving packets through your network. In this course, you'll learn about the basic components that make it function, including LSR, LDP, label switching, and the LSP. Next, you'll learn that the MPLS Layer 3 VPN is a collaboration of several different technologies in order to solve a problem and how it uses VRFs, MPLS, MP-BGP, and your IGP of choice to build a scalable VPN solution. You'll walk you through the construction of a MPLS L3 VPN step-by-step so you can fully understand how each technology element leads to the fully functional solution. This course is one of a series that prepares you for the 300-410: Implementing Cisco Enterprise Advanced Routing and Services (ENARSI) certification exam.