1 (清华大 学 计算机科学与技术系,北 京 100084) Analysis and Research on Network Processor 2.pdfVIP

1000-9825/2003/14(02)1148 ©2003 Journal of Software 软 件 学 报 Vol.14, No.2 ∗ 网络处理器的分析与研究 1+ 1 1 1 谭章熹 , 林闯 , 任丰源 , 周文江 1(清华大学 计算机科学与技术系,北京 100084) * Analysis and Research on Network Processor 1+ 2 3 4 TAN Zhang-Xi , LIN Chuang , REN Feng-Yuan , ZHOU Wen-Jiang 1(Department of Computer Science and Technology, Tsinghua University, Beijing 100084, China) + Corresponding author : Phn 86- 10-6278-2587, E-mail: xtan@ http :// Received 2002-08-09; Accepted 2002-11-12 Tan ZX, Lin C., Ren FY, Zhou WJ Analysis and Research on Network Processor. Journal of Softwar e, 2003,14(6) :1148~1151. Abstract: Nowadays the most salient trend with network is the increase in data rates while there is significant effort in developing new protocols and services. However, the traditional network devices which are custom logic based or pure software based, could hardly satisfy both performance and flexibility requirements. To overcome this obstacle, the parallel and programmable network processors have been involved into processing path of routers (switch). Besides network processors which are built on ASIP technology and optimized for network applications, possess the characteristic of hardware and software solution simultaneously. Network processors extend the classic store-and-forward pattern to store-process-and-forward, which makes room for complex QoS control and payload processing. This article introduces the related research works from two aspects, system and application. Then we analyze the system issues and challenges of network processors. What’s more, w