MPLS Traffic Engineering In IP Bearer Network Deployment

In recent years, with the rapid development of Internet technology, new applications emerging, new application method and in the creation of new technology, especially the emerging mobile Internet application, the data flow in the mobile Internet was explosive growth, puts forward new challenges to the flow model of the operators of the city area network construction and management,3G initiated mobile network flow increase, the current data flow operators to bring a new growth point, but also brought great pressure, how to build a can carry multiple services relatively inexpensive network, is an urgent need to solve the problem of carrier class network, IP-core bearer network can adapt to bursty packet traffic transmission needs, cost significantly reduced, so the establishment of network based on IP is a trend of current demand and application, the IP is carrying the development trend of the network, TDM bearer network unable to coordinate the contradiction between this two condition:Ensure business in bearer network to get high-quality services, such as: bandwidth, delay, high availability, etc; In a large number of high-bandwidth, burst bandwidth leased line is opened, it is also possible to control the cost per bit within acceptable The traditional TDM transmission network in which can not do both, high bandwidth line opened will lead to rapidly rising costs. The IP core network in the opening of high bandwidth services and later expansion has inherent advantages.In order to realize the network based on IP, requires the introduction of MPLS traffic engineering in IP networks, According to the different categories of services by different techniques to solve, the different services are mapped to MPLS traffic engineering tunnel, through explicit path forwarding services to achieve the unified management of all user services, according to different user SLA, given the fine service to the corresponding, IP carrying network traffic engineering and MPLS series combines kernel, provide strong support for multi service network construction and management.On the basis of the analysis of the multi service bearer network specific requirements, around the tunnel is established and operational bandwidth guarantee these two core issues, from the two aspects of the existing implementation and user needs analysis. The first process to solve the problem of traffic engineering tunnel is established to analyze, in view of the existing implementation of an improved method is proposed, the purpose is to make more intelligent existing mechanisms, and provide technical support for the large-scale deployment of future; secondly analyzed the backup tunnel fast reroute process bandwidth adjustment method, in view of the existing backup bandwidth reservation mechanism a new method is put forward, the purpose is to make the non-leased-line services also has high availability protection. By using these two techniques, can make the bearer network in the opening a lot of services management and maintenance work is simplified, the whole network intelligent degree improve, enhance the user experience.