GMPLS based OBS网络中链路管理协议的应用*

GMPLS虽然是通用多协议标签交换，但是并不是支持所有的交换方式。由于光突发交换方式信令与数据分离，以及数据的多信道选择等特性，这些特性与传统的链路管理协议[1]的结构和功能非常相似，因此在将GMPLS作为OBS传输网络控制面时，最需要修改的协议就是链路管理协议。首次将链路管理协议中流量工程链路绑定与OBS的数据信道调度关联起来，提高了网络的可扩展性和安全性，支持流量工程，并通过OPNET仿真数据验证了对多媒体业务流恢复性能的改善。

Application of Link Management Protocol in GMPLS based OBS Network

Although GMPLS is generalized multiprotocol label switching,it doesn't mean to support all kinds of switching paradigm,for example,Optical Burst Switching(OBS).In OBS network,control channel that transports signaling messages is deprived from data channel and each burst data always has a chance to be scheduled to a better transport channel in a node,which is familiar with the function of traditional Link Management Protocol(LMP),so LMP is the most necessary one when OBS network combining GMPLS protocol stack as control plane.In this article we use the function of bundling in LMP to schedule data burst,which enhances scalability and robust of the network,supports traffic engineering,and shows enhancement to multimedia traffic's recovery by means of simulation in OPNET.