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Extension of E-LSP for Supporting Differentiated Service in MPLS  

박기범 (삼성전자 통신연구소)
정재일 (한양대학교 전자통신전파공학과 멀티미디어 네트워킹 연구실)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.28, no.12B, 2003 , pp. 1081-1090 More about this Journal
Abstract
NGI(Next Generation Internet) is characterized by QoS(Quality of Service) and high speed transmission. Recently, DiffServ and MPLS become most influential NGI architecture. To guarantee end-to-end QoS, it is essential for NGI to interwork MPLS with DiffServ. Here, MPLS WG(Working Group) in IETF(Internet Engineering Task Force) proposed the method of E-LSP(EXP inferred-PSC LSPs) and L-LSP(Label-Only-Inferred PSC LSPs), but both of them have serious problems to satisfy perfect interworking. In this paper, we proposed an extended E-LSP architecture that supports Perfect DiffServ class and experimental function in MPLS such as ECN(Explicit Congestion Notification) capability. We verify that the proposed E-LSP architecture improves QoS in NGI by using ns2 simulator.
Keywords
MPLS; DiffServ; E-LSP; L-LSP; QoS; ECN;
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