Research & Implementation Of RPR Technology In MSTP Equipment

RPR technology is to be integrated the functions in a single board, simply insert RPR veneer in SDH equipment-corresponding slots that can access the Ethernet business (based on 802.3 MAC frames) and pure RPR operations (based on the 802.17 MAC frames), the efficient handling, including bandwidth fair treatment, protection of RPR ring business, the strict isolation and genuine users of business classification CoS and QoS assurance. RPR mapped to the SDH frame structure mainly using GFP and HDLC-like two standards, the use of SDH channel bandwidth with flexible configuration, with the future of the growing data services, SDH networks allocated to increase in the RPR bandwidth, and a corresponding reduction in narrowband voice TDM services, don't need to update the equipment, it can expand the network applications.Facing the current global difficulties in the telecom industry slump, major carriers are seeking to maximize the return on investment. Combine SDH and RPR dual advantages of the third generation of MSTP technology, not only to solve the current operators to bring the greatest benefits of TDM transmission business issues, while IP, ATM and other new business support capacity and bandwidth utilization is much higher than the traditional sense MSTP, in a fairly long period of time to maintain the advanced nature and adaptability of the network and become the metro optical network building mainstream technology. In the next generation of embedded MSTP Resilient Packet Ring (RPR) technology, is of great significance!This paper researchs deeply whit the implementation of RPR technology in MSTP equipment.Base on the analysis of the principle of RPR technology,it studies the advantage of RPR technology,and deeply analyse the great effects in the MSTP technology hierarchy.the paper introduce partial function of the RPR technology clearly: Topology and Protection Module,how to implement at MSTP veneer.This paper includes several aspects as following:Both analyses mstp technology mechanism, summarize MSTP technical advantage and existent problems.Analyses the RPR technical architecture, detail introduce the problems it can solve in the application of MSTP at the present day.Just detail introduce the implementation of Topology and Protection Module in MSTP veneerThe software function of Topology and Protection Module are:1,Realize the fuction of the Topology database how to build AND update in RPR ring.2,Realize the fuction of Protection for RPR ring, offer protectionthe switch less than 50ms when the network breakdown happan.3,Dealt with the configure and query of the network management.