The Function Of Broadband Access Server(BRAS) And The Application In The Broadband IP Metropolitan Network Optimization Construction

In view of the current situation and the existing problems of the Taian broadband IP metropolitan network, in conjunction with the broadband development trend, this dissertation puts forward construction goals on the optimization of the broadband IP metropolitan network, to enhance network management capabilities on multi-billing tactics, and on diversified services application of the broadband IP metropolitan network. Making clear the positioning and the function of the broadband access server (BRAS) in the broadband metropolitan network, the paper determines that the key of the broadband IP metropolitan network optimization is the optimization of the BRAS. It gives a profound analysis on the realization of the BRAS technology, focusing on the BRAS system requirement, its expansion function, networking application as well as PPPOE protocol. Having predicted the broadband users' demand, the number of users and the traffic flow, it determines an optimization plan of the broadband IP metropolitan network based the optimal deployment of the BRAS. It also analyses the network performance before and after the optimization, analyses the user authorization and value-added services of the broadband IP metropolitan network after the optimization. Having optimized the metropolitan network of Taian CNC, the much clearer networking layers are convenient for plan, management and maintenance, providing service intelligence, service identification, diversified service tactics and quality services. Having multi-service capabilities, Taian broadband IP metropolitan network can support multiple service networks, and satisfy the demands of future network and service development.