Along with the increase of microcomputer Local Area Network (LAN) products, the standardization in the architecture of LAN, especially in high layers, is under investigation.

随着微机局部网络(LAN)产品的不断增加，LAN的体系结构，尤其是其高层结构的标准化已提到的议事日程上。

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We have plenty of band with a long distance and thanks to local area networks like my own baby Ethernet, we have plenty of bandwidth in local area that was inside of buildings. But there is a gap, there is a gap between the LAN, the local area network, and the WAN, the Wide Area Network.

我们有大量长距离网带,多亏了局域网，就像我的宝贝,以太网，我们在本地有大量的带宽,那都在建筑物内部的，但是这儿有空白,在LAN之间有空白地带，即局域网,以及WAN，广域网。

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