基于网络处理器的流量过滤及均衡系统的设计与实现

Design and Implementation of Network Traffic Filtering and Balancing System Based on Network Processor

面对网络中的海量数据,单台服务器可能无法及时处理,且并非所有类型的数据流都是目标服务器所需要的。本系统对网络数据流进行协议识别、流量过滤,然后进行流量均衡,将数据流分配到目标服务器集群。文章假设目标服务器集群只需要VoIP数据流,应用BloomFilter算法维护协议特征库及数据流的快速识别;在对语音数据流的均衡过程中,使用TCAM维护数据转发路由及其查找;并通过DRAM应用扩展TCAM空间,以适应海量数据的处理要求。

A single server couldn＇t process the massive network data in time,and the target server does not require all the data.This paper describes a system which could identify the protocol of the network packets and filter the network traffic,and then distribute the flow into the target cluster.The target cluster is assumed to need the voice stream only,and bloom filtes are used to store the features library and fast identify the protocols of the packets.TCAM can keep the routing table and lookup.To meet the requirement of processing mass data,DRAM is adopted to extend the space of the routing table.