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An Application-based Forwarding Model of MPLS ATM Switching System for Differential Services  

김응하 (한국전자통신연구원 네트워크기술전략팀)
조영종 (아주대학교 정보 및 컴퓨터공학부)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.27, no.3C, 2002 , pp. 201-210 More about this Journal
Abstract
A number or MPLS ATM switching system have been proposed to increase the access speed or current routers, but they cannot satisfy the Internet users who use diverse applications. So they are required to support the so-called differential service, which discriminates service behaviors according to the service class. In this paper, to support this differential service we suggest an LSP control method, which uses the extended LDP message and establishes several different LSPs for each FEC according to the service class. Also, we propose an marking algorithm using the cell loss priority field or ATM cells in order to process the differential service according to application categories. In addition, we present a forwarding procedure based on the LSP control method and the marking algorithm. A forwarding model applied this forwarding procedure can be easily implemented with a minimum modification of existing MPLS ATM switching systems. Therefore, we can save cost and time needed to implement the proposed model. Finally, we estimate the performance behaviors of the proposed application-based forwarding model by the AweSim simulation package.
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