Abstract: This paper puts forward a Linear Optical Network Protocol(LONP) based on Metropolitan Area Network(MAN) protocol DQDB. The pattern of building network is an important tache of it. The paper introduces how to build a large MAN with linear subnets, and studies the problem of extending the linear subnet, which deals with an arithmetic, used for determine whether to extend to linear subnet or not, and a method to carry out the extending of the linear subnet. As an application example, it gives a MAN layout of Guangzhou city.

Key words: Metropolitan Area Network(MAN), distributed queue dual bus, repeater, Linear Optical Network Protocol(LONP), linear subnet

摘要： 在城域网协议DQDB的基础上提出线型光网络协议LONP，组网方式是该协议中的重要一环。论述线型子网组建大型城域网的组网方式。讨论线型子网的延伸问题，涉及到子网延伸的判定算法和子网延伸的实现方案。给出一个广州市城域网的规划图作为应用举例。

关键词: 城域网, 分布式队列双总线, 中继器, 线型光网络协议, 线型子网

CLC Number: 

• TP393