multiprotocol label switching - transport profile (mpls-tp) is a variant of the mpls protocol that is used in packet switched data networks. mpls-tp is the product of a joint internet engineering task force (ietf) / international telecommunication union telecommunication standardization sector (itu-t) effort to include an mpls transport profile within the ietf mpls and pwe3 architectures to support the capabilities and functionalities of a packet transport network.