Today,backbone networks deploy a large number of devices and links.This is mainly due to both redundancy purposes for network service reliability,and resource over-dimensioning for maintaining quality of service durin...Today,backbone networks deploy a large number of devices and links.This is mainly due to both redundancy purposes for network service reliability,and resource over-dimensioning for maintaining quality of service during rush hours.Unfortunately,current routers do not have power management primitives,and have constant energy consumption independent of their actual workloads.How to implement a low power and multi-stage switch forwarding for IP lookup is a challenge in high-performance green routers design.A forwarding information base multi-stage mapping routing lookup architecture is presented,and the dynamic routing table mapping algorithm is designed to determine the optimal strides for building tree bitmap tries which lead the worst-case power consumption of the IP lookup engine to be minimized.Experimental results show that the application of reallife routing tables demonstrates that the proposed method could reduce power consumption of routing lookup by 30%.展开更多
随着互联网的发展,现有路由器体系结构在性能、复杂性和节能等方面存在许多难以克服的问题,如何实现高效节能的转发机制是绿色高性能路由器设计面临的重大挑战.基于边交换边转发思想提出一种边转发边交换(forwarding in switching,FIS)...随着互联网的发展,现有路由器体系结构在性能、复杂性和节能等方面存在许多难以克服的问题,如何实现高效节能的转发机制是绿色高性能路由器设计面临的重大挑战.基于边交换边转发思想提出一种边转发边交换(forwarding in switching,FIS)机制,通过模糊转发流水交换减少了路由器转发和交换阶段的存储需求和访存次数.该机制复用多个低速节点构成多级流水线结构,通过低成本执行部件的规模化运行提高交换性能和IP查找速率,可降低报文查表交换的硬件实现复杂度.建立了先转发后交换(forwarding before switching,FBS)机制和FIS机制的能耗模型,使用不同模型模拟内部缓存、输入输出端口等具有不同结构的节点,仿真实验证明FIS机制比现有的FBS机制减少约12.5%的能耗.提出的分析模型适用于可扩展和绿色节能路由器的设计.展开更多
基金Supported by the National High Technology Research and Development Programme of China(No.2008AA01A323,2009AA01A334)the National Basic Research Program of China(No.2007CB307102)
文摘Today,backbone networks deploy a large number of devices and links.This is mainly due to both redundancy purposes for network service reliability,and resource over-dimensioning for maintaining quality of service during rush hours.Unfortunately,current routers do not have power management primitives,and have constant energy consumption independent of their actual workloads.How to implement a low power and multi-stage switch forwarding for IP lookup is a challenge in high-performance green routers design.A forwarding information base multi-stage mapping routing lookup architecture is presented,and the dynamic routing table mapping algorithm is designed to determine the optimal strides for building tree bitmap tries which lead the worst-case power consumption of the IP lookup engine to be minimized.Experimental results show that the application of reallife routing tables demonstrates that the proposed method could reduce power consumption of routing lookup by 30%.
基金~~Supported by the National Natural Science Foundation of China under Grant No.90104002 the National High Technology Development 863 Program of China under Grant No.863-306-ZD-07-01
基金Supported by the National Natural Science Foundation of China under Grant Nos.9060402960773150(国家自然科学基金)the National High-Teeh Research and Development Plan of China under Grant No.2077AA01Z219(国家高技术研究发展计划(863))
文摘随着互联网的发展,现有路由器体系结构在性能、复杂性和节能等方面存在许多难以克服的问题,如何实现高效节能的转发机制是绿色高性能路由器设计面临的重大挑战.基于边交换边转发思想提出一种边转发边交换(forwarding in switching,FIS)机制,通过模糊转发流水交换减少了路由器转发和交换阶段的存储需求和访存次数.该机制复用多个低速节点构成多级流水线结构,通过低成本执行部件的规模化运行提高交换性能和IP查找速率,可降低报文查表交换的硬件实现复杂度.建立了先转发后交换(forwarding before switching,FBS)机制和FIS机制的能耗模型,使用不同模型模拟内部缓存、输入输出端口等具有不同结构的节点,仿真实验证明FIS机制比现有的FBS机制减少约12.5%的能耗.提出的分析模型适用于可扩展和绿色节能路由器的设计.
