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Networks and Services: Carrier Ethernet, PBT, MPLS-TP, and VPLS by Mehmet Toy

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Chapter 13: MPLS-TP (MPLS-Transport Profile)

13.1 Introduction

MPLS-TP or MPLS (Multiprotocol Label Switching) Transport Profile has been defined by the IETF to be used as a network-layer technology in transport networks. It is a continuation of T-MPLS (Transport MPLS). The objective is to achieve the transport characteristics of Synchronous Optical Network/Synchronous Digital Hierarchy (SONET/SDH) that are connection oriented, a high level of availability, and quality-of-service and extensive operations, administration, and maintenance (OAM) capabilities. MPLS-TP is expected to enable MPLS to be deployed in a transport network and operated in a similar manner to existing transport technologies and support packet transport services with a similar degree of predictability to that found in existing transport networks.

As discussed in Chapter 13, the ITU Study Group 15 took MPLS as a starting point and has labored to develop T-MPLS, a stripped down version suitable for connection-oriented transport. It is a packet-based transport network that will provide an evolution path for next-generation networks reusing a profile of existing MPLS and complementing it with transport-oriented OAM and protection capabilities. T-MPLS promises multiservice provisioning, multilayer OAM, and protection resulting in optimized circuit and packet resource utilization. The objective is to have an infrastructure for any client traffic type, in any scale, at the lowest cost per bit.

ITU-T approved the first ...

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