MSR: A multi-service provisioning implementation in metro network based on RPR

Multiple services ring (MSR) has been standardized in ITU-T numbered as X.87. As a novel multi-service provisioning method based on RPR, MSR proposes an effective mechanism of transporting various voice, data, video services with tributary multicast, protection and performance monitoring functions. In this paper we present the layered model of a MSR and introduce the main enhancements based on RPR. Then we propose a novel Parallelized Processing Mechanism (PPM) for design of MSR using network processor. Our design adopts a combination of layered parallelism and functional parallelism. And this paper also describes the simulation model for performance evaluation with OPNET as well as the implementation of MSR using network processor. System simulations and field trial measurements show that TDM Circuit Emulation (TCE) services and Ethernet services are given the QoS and fast recovery guarantee based on MSR.