http://www.rfc-editor.org/rfc/rfc7190.txt
RFC 7190: Use of Multipath with MPLS and MPLS Transport Profile (MPLS-TP), C. Villamizar2014-03-01T23:00:00-00:00Using MPLS Entropy Labels (RFC 6790), MPLS Label Switched Paths (LSPs) can be carried over multipath links while also providing a fully MPLS-TP-compliant server layer for MPLS-TP LSPs. This document describes the means of supporting MPLS as a server layer for MPLS-TP. The use of MPLS-TP LSPs as a server layer for MPLS LSPs is also discussed.