The metro area network is at the corner of thorough building and reforming

however

the destination need fresh requirement and service growth point. The launching of 3G network has bring this kind of source by service

and also the original power that driven the wholly reforming of metro transport network. This article introduces the new generation intelligent MSTP devices and their supporting function to the development of 3G network. The conclusion is the new round of metro area network construction sho-uld face and feasible to the 3G network building program.