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Research on Routing Protocol in LOBS/GMPLS Networks

Author: TianChunLei
Tutor: WuJian
School: Beijing University of Posts and Telecommunications
Course: Electromagnetic Field and Microwave Technology
Keywords: Tag-based optical burst switching networks Intelligent optical network Open Shortest Path First algorithm Traffic Engineering Protection and restoration
CLC: TN915.03
Type: Master's thesis
Year: 2009
Downloads: 25
Quote: 1
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Abstract


This thesis is based on the routing protocol in LOBS network of multi-domain and the GMPLS network interconnection structure. In the paper, complete the following tasks: (1) simplify the the OSPF algorithm in the implementation of the experimental platform. Firstly, brief introduction to the concept of LOBS network and GMPLS network, and describes the overlay model LOBS network and GMPLS network interconnection. Based on the LOBS / GMPLS experimental platform, in order to quickly build an end-to-end LSP paper designed a simplified routing protocols, the Agreement requires the ability to support laboratory platform work quickly and efficiently complete the LOBS domain topology convergence and Shortest route selection, referred to the simplified algorithm of OSPF. The design of the algorithm is based on the standard OSPF protocol design idea, inherited the the OSPF protocol topology fast convergence and fast routing features, relative to the standard OSPF protocol that the algorithm has a more simple data structure design and packet format design. The paper made a detailed introduction on the three packet format is designed to simplify the OSPF algorithm and the definition of the protocol frame, and the function of the protocol algorithm was validated by the experimental platform. (2) OSPF-TE extensions in the application of experimental platform. In LOBS / GMPLS interconnection, network platform, between the two networks, the need for timely and effective transfer some of the elements of information, including the GMPLS domain virtual link setup status information and LOBS network-related parameters. LOBS network with GMPLS network, OSPF-TE extensions to important information in a timely and effective interaction platform. In the experimental platform design, LOBS domain of each node, in addition to save a local topology information database, as well as a used storage the GMPLS domain link information database, the database with the link state of the GMPLS domain profile and profile. Experimental processes and results in the paper to verify the OSPF-TE of the extended application support LOBS GMPLS network interconnection to ensure the inter-domain important information quickly and efficiently interact. (3) the LOBS within protect the implementation of the recovery mechanism. To ensure operational the LOBS within the safe and effective transfer, experimental platform to take protective recovery mechanisms to protect the working link. LOBS network from source to destination link access precomputed, calculated by CSPF algorithm successive multiple paths, path information is then returned to the signaling layer. So if the current work the shortest link failure, the network system will automatically switch to the subprime path protection, and ensure safe and effective transmission of business.

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