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Packet Transport Network Planning Technology Research and Implementation

Author: RongFang
Tutor: LiLeMin
School: University of Electronic Science and Technology
Course: Communication and Information System
Keywords: PTN Network Planning Bandwidth constraints model MA mode RD mode Dual- link failure protection
CLC: TP393.02
Type: Master's thesis
Year: 2009
Downloads: 216
Quote: 2
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Abstract


With the rapid development of the global Internet business, put forward higher requirements for network transmission capacity. PTN (Packet Transport Network, PTN) not only maintained the traditional SDH (Synchronous Digital Hierarch, the advantages of the synchronous digital hierarchy) transmission network, but also to adapt to the characteristics of the data business, such as packet switching, statistical multiplexing, connection-oriented Label Switching. These characteristics make the PTN has a strong delivery capability, and be able to apply to different Internet business needs, which became a hot topic worldwide. At the same time, in order to meet the next generation network systems in a variety of business QOS (Quality of Service, QoS) necessary, the IETF (Internet Engineering Task Force, the Internet Engineering Task Force) proposed differentiated service model. The bandwidth constraint mode (Bandwidth Constraints Model, BCM) is one of the key technologies of PTN supports differentiated services, how important research significance in different BCM constraint network planning. In this paper, bandwidth constraints model for the two most popular: maximum resource allocation model (Maximum Allocation Model, MAM) and Russian Doll (Russion Doll Model RDM) mode, were related to network planning studies. Firstly, in the second chapter presents a minimum cost network capacity design algorithm MC-NCD (Minimum Cost-Network Capacity Design). The algorithm in the case of the resources are not limited according to the inherent characteristics of the MA and RD mode, so that subsequent configuration of the business to make full use of the existing resources in the network, thus optimizing the LSP resources, and routing distribution, to achieve a total cost of the network close to the smallest optimization objectives. In the third chapter, for the network capacity is limited, the authors propose a maximization configured service bandwidth network capacity the allocation algorithms MB-the NCD (the Maximum Bandwidth-Network is Capacity Distribution), makes more business bandwidth network successfully configured. MB-NCD algorithm through reasonable design, configure business reserved for subsequent configuration of the business more optional link link cost, thus greatly improving the business bandwidth in the network configuration success rate. Finally, due to the dual-link failure in the network have been inevitable, Chapter IV of this paper also support dual-link failure protection network planning study. In order to improve the utilization of resources, 1 1 Shared dual-link failure protection. Meanwhile, the MA model and RD model is characterized by an optimized shared protection channel calculation algorithm OSBP (Optimal Shared Backup Path). Close to the minimum of the total cost of the algorithm through effective resource sharing and savings network backup resources, thus making the network. In this paper, the above three algorithms were simulated and compared with other algorithms. A large number of simulation data, network planning algorithm has good performance, this applies to the actual network planning.

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CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > Computer applications > Computer network > General issues > Computer network architecture and design
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