Performance Enhancements of the Metro Transport Network Based-on GMPLS Multi-Service Transmission Platform

摘要

The metro network has experienced three generations periods. First-generation one is a traditional SDH-based network, the second-generation metro network is SDH-based and Ethernet integrated multi-service transport platforms (MSTPs) to transmit voice and data service, the third-generation SDH-based multi-service transport platforms (MSTPs) with MPLS and RPR combined to guarantee the QoS. However traditional SDH network has many disadvantages So the 4G MSTP appears, which is favored for intelligent function to realize the end-to-end service provision., intelligent control plane with GMPLS, Virtual concatenation, LCAS traffic engineer, Grooming and Switching etc. it was developed with the objective of dynamic bandwidth adjustment, protection and restoration, high network utility rate, low time delay to transport the data traffic and improve the capability of the bandwidth management, SLA (Service Level Agreement). At the same time, it can introduce the new service to make the carriers competitive. In this paper, first we present the carrier network situation, then we give the network architecture with intelligent function. At last, we analysis the performance enhancement the GMPLS MSTP bring to.