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为了有效地降低突发包的丢失率和保证OBS网络中不同优先级业务的服务质量,提出了一种基于优先级与突发包分割的偏射路由机制.当冲突发生时,首先基于突发包的优先级进行“竞争突发包头部分割或者原突发包尾部分割”处理;无冲突部分直接在事先预留的输出数据信道上处理,冲突部分的分割突发包根据参数可调的偏射路由机制被偏射到最佳偏射路径上.仿真结果表明,该机制能够有效地降低整个网络的丢包率和端到端的延时,并且得到高优先级突发包的丢失率和延时低于低优先级突发包.由此可知,基于优先级与突发包分割的偏射路由机制能够有效地解决突发包的冲突问题,从而提高整个OBS网络的性能.
In order to effectively reduce the packet loss rate and ensure the service quality of different priority services in OBS network, a polarization routing mechanism based on priority and burst packet segmentation is proposed.When a collision occurs, The priority of the packet is “contending for the header of the burst header or the tail of the original burst header.” The collision-free part is processed directly on the output data channel reserved in advance. The burst part of the collision part is adjustable according to the parameter The polarization routing mechanism is deflected to the best projective path.The simulation results show that this mechanism can effectively reduce the packet loss rate and end-to-end delay of the entire network, and get the loss rate of high priority burst And the latency is lower than that of the low-priority burst.Thus, we can see that the mechanism of the stray routing based on the priority and the burst packet segmentation can effectively solve the conflict of burst packets and improve the performance of the whole OBS network.