Design and Implementation of PPPoE Analysis System Based on Winpcap

In this paper, a system for PPPoE protocol analysis is designed and implemented. The system includes three modules: network capture module, traffic analysis module and information log module. The network packets are captured by Winpcap which can enhance high correctness and efficiency of the network capture. The mechanism of PPPoE data communication and the packet capture method of using Winpcap are introduced and the process of PPPoE protocol analysis is realized in detail. The protocol data in the log module is based on XML format and it can provide more readable information using XSLT. The algorithms of parsing the tag options and making packet markup in the XML file are realized. The experiment shows that the system can transform the whole protocol information correctly and this system can make the administrator and customer to make full use of the network advice on ADSL and check the network problem quickly.