基于流量工程的自动交换光网络新路由协议研究

The research of a novel ASON routing protocol based on traffic engineering

为了研究基于流量工程的自动交换光网络（ASON）路由协议，采用基于源标签交换路由（LSR）路由泛供、仅广播链路可用带宽的增减的方法，得到了该协议能使LSR根据准确的带宽信息和波长可用信息选择路由的结果。结果表明，当链路中每个节点信息负荷量较小时，该协议拥有最小的链路阻塞率；与传统的路由机制相比，它能减少4～7倍的控制开销。

A novel ASON routing protocol based on traffic engineering is researched by using the source label switching router（LSR） flooding mechanism and only advertising the increment or decrement of bandwidth in the lightpath. It is shown that the protocol enables LSR to select routers by using accurate bandwidth information and wavelength availability information The result shows that the protocol has the smallest blocking probability when the loads are light, and it can reduce the control overheads 4 to 7 times compared with traditional routing protocol.