300-410 ENARSI: Implementing Cisco Enterprise Advanced Routing and ServicesDemo

A P router forwards MPLS packets by examining and swapping labels. An LSP is the path that labeled traffic follows through the MPLS network. A CE device is outside the MPLS provider core and is unaware of MPLS labels. A PE router serves as the MPLS edge, imposing labels for ingress traffic and removing them for egress traffic.