The method introduced in this paper is based on Ethernet datalink layer and phisical layer's protocol, IEEE 802 ( that is ISO 8802). then higher layer's software is made realizing the interconnection of heterogeneous network. 本文介绍的方法是以ETHERnet数据链路层和物理层协议IEEE802(ISO8802)为基础,研制高层软件,实现异种网络互联。