Research On Reconstructed Routing & Switching Platform Supporting Kinds Of Network Architecture

Traditional information networks take on simplex expansibility and comparative stability. It can not fit dynamic development of next generation network traffic. The conception of reconstructed network is advanced for solving the problem. The reconstructed network establish multiform logical carrying network on the sam physical network resource. The logical carrying network can support diversified network architecture. The reconstructed network can maintain lower odds of alteration in course of development of future network traffic. The robust and expansibility of network traffic would evidently be improved.The reconstructed network includes transmission link and reconstructed routing & switching platform. However, the research of high performance router is limited in the reconfigurable technology of the forward and control function. The research of architecture and switching technology can not be developed about reconstructed routing & switching platform. According to the research requirements of the―Research and Implementation of Reconfigurable Router Components Suit‖project, the theses establish architecture of reconstructed routing & switching platform supporting kinds of network architecture. The technology including the switching mode, scheduling mechanism and switching fabric is designed for reconstructed routing & switching platform to fit the variability of network Traffic. This thesis includes the following aspects:1. The significance of reconstructed network is confirmed. The reconstructed network can establish multiform logical carrying network on physical network resource with reconstructing network resource. The logical carrying network supporting a sort of network architecture can provide the same quality of service for one kind of network traffic. Network user employing network traffic can select service of logical carrying networks for requirement. It makes logical carrying network puts up strong relativity with the function of network traffic. On the other hand, logical carrying network puts up weak relativity with the performance of network traffic. The reconstructed network not only advance efficiency of network resource, but can fit the variability of network traffic.2. Based on RTPR function of FPGA, the architecture of reconstructed routing & switching platform is established. The architecture include reconstructed manage plane, control plane, switching plane, forward plane, interface plane and links between planes. The architecture can provide circumstance for the reconstructed routing & switching platform that can establish multiform logical carrying nodes. Based on logical carrying nodes, the reconstructed routing & switching platform deploy multiform reconstructed technology in physics layer, link layer, network layer and switching fabric. It makes the reconstructed routing & switching platform can provide different services for kinds of network architecture.3. The variable fix-length packet switching model is design for the reconstructed routing & switching platform. The variable-length packet switching model can fit multiform network traffic. But packet transmitted by the variable-length packet switching model would easily appear delay jitter. The fix-length packet switching model predigests the hardware implement of routing & switching equipment. But ruleless speciality about the length and frequency of network traffic packet increases spending. The length of head is fixed in the variable fix-length packet switching model, and the length of load is variable based on the traffic of network. It has the advantages of the fix-length packet switching model and the variable packet switching model. The model can effectively advance the using rate of transmission bandwidth since the changeability of load can fit the variability of network traffic.4. The switching fabric and equilibria scheduling algorithm of the reconstructed routing & switching platform is designed. The reconstructed routing & switching platform establish switching fabric based on the expanded switching component model. The expanded switching component model makeuped multipolar virtual output queue and buffered crossbar adopt the RESA algorithm based on equilibria scheduling mechanism. The multiform network traffics are distributed different bandwidth for the requirement of delay in equilibria scheduling mechanism. On the other hand, the network traffics are equilibriumly scheduled based on the proportion of bandwidth for the requirement of delay jitter in equilibria scheduling mechanism. It makes that all of network traffic are equilibriumly distributing in the output link. Theoretic analysis and the emulational experiments indicate the expanded switching component model and the RESA implement equilibria scheduling. It can provide favorable quality of service for the multiform network traffics including streaming media.