A model for traffic exchange of the Internet on application layer

我们提出了PIX或伪互联网交换，这是一个交换互联网流量的模型。基于PIX的网络在网络的应用层进行流量交换，并在准备好的区域内网中解析区域流量交换。我们的PIX出现了一些技术问题。本研究的目的是找出问题的解决方案。我们首先建立了一个名为KPIX的实验网络，连接高知县的八个组织来进行研究。每个组织都有自己的互联网连接，并通过无线通信单元相互连接。其中一个主题是区域网络中私有IP地址或可接受使用策略（aup）的冲突。我们提出采用网络地址转换（NAT）和IPsec隧道来解决这个问题，并在KPIX上进行了实现。第二个主题是如何在应用层共享内容。我们提出了一种WWW服务器组合，它保留了对WWW服务器的访问控制。我们还展示了KPIX的实现。最后一个主题是维护基于PIX的网络的成本。我们提出了一个PIX的成本模型，该模型通过对总流量相同的内部网和Internet的连接费用变化量进行计算。通过对成本模型的分析得出结论，如果总流量较大，且内部网流量的比例较大，则PIX具有优势。

We proposed PIX or Pseudo Internet eXchange that is a model for exchanging traffic of the Internet. A network according to PIX exchanges traffic on the application layer of the network and resolves regional traffic exchange in a prepared regional intranet. We have had some technolongical issues of PIX.The purpose of this research is finding out solutions of the issues.We firstly had constructed an experimental network, named KPIX, connecting to eight organizations at Kochi prefecture to perform the research. Each organization has an own connection to the Internet and is connected each other via wireless communication units.One of the topics is collision of private IP addresses or Acceptable Use Policies (AUPs) in a regional network. We proposed to adapt network Address Translation (NAT) and tunneling by IPsec to solve the topic and have made an implementation on KPIX.Second topic is how to share contents on application layer. We proposed about WWW servers combination that preserves an access control on the WWW servers. We also show an implementation on KPIX.Last topic is cost of maintaining a PIX based network. We proposed a cost model of PIX by an amount of connection fee variations to an intranet and the Internet where the total traffic is same. An analysis of the cost model concludes PIX takes advantage if the total traffic is larger and a ratio of the intranet traffic is greater.