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本文以城市为中心的区域性信息基础设施———信息港为对象讨论有关的基本技术。信息港可划分为主干网、接入网、资源网（ 概念网） 和互联设施四部分，本文重点讨论前两部分的基本技术。
In this paper, the city as the center of the regional information infrastructure --- Information Harbor as the object to discuss the basic technology. The information port can be divided into four parts: backbone network, access network, resource network (concept network) and interconnection facilities. This article focuses on the basic techniques of the first two parts.