文章基本信息

标题：USING LDP FASTREROUTE VERSUS LDPORSVP IN AN MPLS CORE BACKBONE FOR CONVERGENCE ENHANCEMENT
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作者：ALA ABDELALI ; DRISS EL OUADGHIRI ; MOHAMED ESSAAIDI 等
期刊名称：Journal of Theoretical and Applied Information Technology
印刷版ISSN：1992-8645
电子版ISSN：1817-3195
出版年度：2013
卷号：47
期号：3
出版社：Journal of Theoretical and Applied
摘要：MPLS/VPN backbones are widely used today by various operators and private companies in the world, high to medium-sized, either use an operator or build their own MPLS/VPN backbone. Real time applications like voice and video are more and more integrated to end user applications, making them ever more time sensitive. Operators are offering services like hosting companies voice platforms, voip call centers, iptv ..etc. All these aspects make the convergence time inside a backbone a challenge for service providers. However, the global convergence time is an assembly of several factors including: link or node failure detection, IGP failure detection, LSP Generation, SPT Computation, RIB update, local FIB creation and distribution ...updates signaling...etc., a lot of approaches can be used to minimize the convergence time, our approach consist on enhancements and optimization in control and forwarding plane, the scope of our work is the core backbone, however a lot of things can also be made at the access. In this article we especially focuses on stressing and comparing two methods: �LDP over RSVP in the core P routers� and � LDP Fastreroute in the core P routers�. Beyond the �state of the art� and implementation of both protocols, we describe in detail our design considerations, impact of faults and test results, the aim of the study is to give an accurate idea of gains and drawbacks of each method and which one more fits an operator infrastructure. We consider this work as a contribution to the global research on the �network convergence item�, it more deals with the state of the art, and features interoperability. A continuation of this work is using same approach while modeling new protocol concepts holding intrinsically the convergence as a constraint.
关键词：Fast-convergence (FC); Resource Reservation Protocol (RSVP); Label Distribution Protocol (LDP);Virtual Private Network (VPN); Loop Free Alternate (LFA); Next Hop Label Forwarding Entry (NHLFE); Intermediate System to Intermediate System ( IS-IS); Label Switched Path (LSP); Lost of Signal Detection (LOSD); Multiprotocol Label Switching (MPLS); Protocol Independent Convergence (PIC); Route Distinguisher (RD); Routing table manager (RTM); Provider edge route (PE); bidirectional failure detection (BFD); Provider Router (P); Label Switch Router (LSR)