BLR: The Bus-line Router
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A now routing algorithm based on the principle of the 'bus-line router' design is presented. The algorithm has the advantages of both maze-router and channel router that are small routing areas, high routibility, and high routing speed. The switch box problem is avoided. The basic approaches of the algorithm are using minimum bus lines to get small routing areas, and choosing the optimal distribution of terminals to increase the probability of the success of close routing. Both close routing and open routing methods are described. The complete CAD layout package, which includes layout input, global router, and detail router by using the bus-line router algorithm, has been implemented in C, on SUN workstation at San Jose State University.Keywords:
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The design of efficient router represents a key issue for the success of the Network-on-chip approach. This paper presents and evaluates a novel router architecture MIC@R suitable for Networks-on-Chip (NoC) Design. This router offers lowest latency (1 cycle) and allows supporting several adaptive routing algorithms. Latency reduction is obtained by using Fast Parallel Routing (FPR) arbitration that consists in parallel processing -in one stage, routing decisions and arbitration. The proposed router architecture is evaluated in 2D Mesh with two adaptive routing algorithms: fully adaptive (FA) and Proximity Congestion Awareness (PCA). The obtained results show that our router, combined with adaptive routing techniques is effective in terms of latency and throughput.
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To satisfy the requirement that the router in network on chip can support multiple IP cores,and its latency performance is good,a router with a distributed routing and arbitrating structure is designed.Its arbitration module arbitrates on the request state of the current router and the state of the input buffer in the next router,this arbitration method improves the success rate of the packet transmission,so it decreases the transmission latency and improves latency performance of the router,meanwhile the simulation results indicate the router has good expansibility in area overhead.
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The article introduces the typical network structure of VPN and describes the realization of Router to Router VPN on Windows 2000 Platform.According to the concrete application example,it gives full details of the realization and analyses key points of the realization.It provides an general solution for constructing Router to Router VPN.
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A new solution to port general operating systems and their routing software to switch router is presented. The solution shields the architecture difference between traditional router and switch router to application level software, thus it may support general operating system and their routing software on switch router platform. The solution is also considered as requirements of both data communication and control functions. And same ways of the access and control of the router are provied as traditional router, so routing software of the general operating system may be ported to switch router platform rapidly with the upgradeable flexibility. Practical design approves that the solution has a good compatibility and flexibility.
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The first implementation of the cross-protect router is described in this chapter. Moreover, the results of tests of an XP router prototype conducted in a laboratory are presented. These results show the advantages of the XP router over the IP router. It is shown that traffic in FAN is served fairly and the packets of streaming flows are transmitted with high priority. Moreover, test results confirm that streaming flows are served with acceptable quality even in highly loaded links, which is not observed for the classic IP network. The tests also show several problems which were not caught by the simulation studies presented before. The tests ultimately show that Flow-Aware Networking works as a concept, and that, by reaching maturity, it is ready for large-scale deployment. As a software framework for the implementation the Click Modular Router environment which is widely used for building experimental software routers and switches was chosen.
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