There are many methods to interconnect LANs through a MAN. This paper implements the interconnecting of IEEE802.3 LANs through a DQDB MAN using transparent bridges,in regarding the running efficiency, the complexity, and the practice requirement.

• 局域网通过城域网互连有多种方案，考虑到运行效率和复杂性，并结合实际需求，本文采用透明桥接技术实现了IEEE802.；3局域网通过IEEE802