Studying For The Application Of MSTP In Telecom Metropolitan Area Transmission Network

In recent years, in order to adapt rapid increasing service demand of broadband, people dives into abundant energy to rebuild access network of consumer side to let it possess ability of providing diversified broadband data, video and audio services. On the other hand, the capability of long-distance trunk line is going forward to T bits, at the same time disposal capability of core Router has reached at T bits. The large transmission capability of truck line has already become stabile foundation of network development. But capability and interface capability of traditional LAN is difficult to satisfy the demand of service leading and collection. On the consequence, region crack appeared.Because of historical reasons, SDH equipments were widely used in telecommunication system. Current metro transmission network usually have such problems: 1,The type of Network Interface is few, the ability of Provision of service is bad, the dispatch and management of resource is not convenient, the cost is high for designing network for big customer. 2,The using efficiency of resources is not high. 3,Fiber resource was taken too much. 4,The Network security is bad. It doesn't adapt rapid increasing demand of broadband service.The reconstructive technology which can be used in telecom MAN recent years is systemically analyzed in the paper, such as IP over SDH, ATM over SDH, MSTP etc. The MSTP is a impactful reinforce for SDH, besides having the standard SDH transmission node function, MSTP based on SDH also have follow functions:(1)Have the access function of TDM,ATM and Ethernet; (2) Have the transmission function of TDM,ATM and Ethernet including P2P transparent function; (3)Have bandwidth Statistical Multiplexing function of ATM or Ethernet; (4) Have the function of ATM or Ethernet mapping to SDH Virtual Container. MSTP could effectively alleviate problems on the current network.With practical experience, the development Strategy of MSTP using in the field of current metro transmission is proposed. Especially to the VIP customer private access service, some plans are analyzed from each aspect and suggested in this paper. In existing situation the scheme of some organization establishing its private transmission network using MSTP is analyzed in the paper. Some works, such as system requirements, network design, equipment types and software configuration are completed. Moreover, the appraisal of this scheme has been passed by correlative experts.