To configure MPLS-signaled label switched paths (LSPs), an LSP must run from an ingress router to an egress router. Configure only the ingress router and configure LSPs to allow the software to make the forwarding decisions or statically configure some or all routers in the path. The LSP is set up by Resource Reservation Protocol (RSVP), through RSVP signaling messages. The automatically manages label values. Labels that are automatically assigned have values ranging from 1,024 through 1,048,575. See section Label values for more information.
A static LSP is a manually set up LSP where the next hop IP address and the outgoing label are explicitly specified.