Hardware structure model of VPN firewall based on NPU frame
Zhaoyang Feng · Jisuanji gongcheng yu sheji · 2006
The rapid advancements of optical networking have increased the capacity of physical links,Nowadays,the bottleneck does not lie on the transmission system,but on the network processing elements that must keep in space with the ever increasing line rates。 software-based network processing is not sufficient anymore,eapecially due to the increased requirements of new emerging feature-rich applications and services。more and more approaches using Cooperation with software and hardware was proposed.Similar as the tra-ditional network equipment,the firewall experienced its hardware architecture evolving from Intelx86 to ASIC,and then to NPU.The main characteristics of these three system structures was analysed and compared.Their values of existing and room of developing were discussed。Based a hardware platform model of VPN firewall,suggesting to develop NPU and its network security product as our own intellectual properties.It is recommended to use domestic made CPU such as GodSon in order to obtain fully control of the intellectual property.