SUN Chang-hua, LIU Bin, LI Wen-jie. Research on Switching Throughput of Traffic Manager in Core Routers[J]. Acta Electronica Sinica, 2005, 33(7): 1242-1246.
SUN Chang-hua, LIU Bin, LI Wen-jie. Research on Switching Throughput of Traffic Manager in Core Routers[J]. Acta Electronica Sinica, 2005, 33(7): 1242-1246.DOI:
每路CSIX(Common Switch Interface)接口至少需用4路HSSL(High Speed Serial Link)链路;在CSIX接口处形成CFrame帧时需要对IP包最后一个信元按照实际大小形成CFrame帧
才能保证交换网络与CSIX接口处线速转发所有长度的IP包.最后
本文给出了业务引擎吞吐量和IP包存储之间的一般性关系
该关系可用于指导核心路由器交换网络的设计.
Abstract
We made a general model to analyze switching throughput of traffic manager in core routers.By designing a real traffic manager which uses the OC-48c interface
we analyze the whole system and point out that at least four HSSLs should be employed per CSIX interface when using Vitesse's GigaStream switch chip set.Meanwhile
at the CSIX interface
the CFrame should be constructed according to the actual size of the last cell of each IP packet.Above principles can guarantee forwarding IP packets at line rate.We give a general relationship between throughput and buffering scheme of IP packets in the external memory
which is useful in the design of switch fabric in core routers.