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在研究分析NAT不同解决方案的特点的基础上,提出了一个基于路由器NAT系统的接入地址和交换路由地址分离的方案,并在路由器上实现了该方案。实验结果表明,该方案具有可得性、精确性和时效性,为解决普适计算环境中的可直达性问题,提供了依据。同时,该方案中节点标识与位置无关,并且与路由标识的相互分离,本质上是接入地址和交换路由地址分离思想进一步深入,对于研究未来分组网的移动协议具有较大意义。
On the basis of studying and analyzing the characteristics of different NAT solutions, this paper proposes a scheme based on the router NAT system to separate the access address and the exchange route address, and implements the scheme on the router. Experimental results show that this scheme is available, accurate and time-efficient, which provides a basis for solving the problem of reachability in pervasive computing environments. At the same time, node identification in this scheme has nothing to do with the location and separation from routing identification. In essence, the idea of separation of access address and exchange routing address further deepens, which has great significance for studying the mobile protocol of future packet networks.