"MPLS TE Technology Overview" presents a review of Multiprotocol Label Switching Traffic Engineering (MPLS TE) and describes the basic operation of the technology. This description includes the details of TE information distribution, path computation, and the signaling of TE LSPs. The subsequent sections present how Differentiated Services (DiffServ)-Aware traffic engineering (DS-TE) helps integrate the implementation of DiffServ and MPLS TE. This chapter closes with a review of the fast reroute capabilities in MPLS TE.
QoS for IP/MPLS Networks by Santiago Alvarez is a practical guide that will help you facilitate the design, deployment, and operation of QoS using Cisco IOS Software and Cisco IOS XR Software. The book provides a thorough explanation of the technology behind MPLS QoS and related technologies, including the different design options you can use to build an MPLS network with strict performance requirements.
Read Chapter 2, MPLS TE Technology Overview, in this PDF.