MPLS/TE

Multiprotocol Label Switching Traffic Engineering (MPLS/TE) provides a way to integrate TE capabilities (such as those used on Layer 2 protocols like ATM) into Layer 3 protocols (IP). MPLS TE uses an extension to existing protocols (Resource Reservation Protocol (RSVP), IS-IS, Open Shortest Path First (OSPF)) to calculate and establish unidirectional tunnels that are set according to the network constraint. Traffic flows are mapped on the different tunnels depending on their destination. See also MPLS.