This article firstly discusses how to use VLAN in a LAN where ATM is used as the backbone,secondly,it propounds and analyses three architecture solutions to the problem of where to locate the routing functionality,and raises a example for reference.

• 文章讨论了利用ATM作主干的局域网中的VLAN的设置,然后又提出并分析了几种路由选择方案,并举例加以说明。