基于GMPLS的光突发交换的业务接入的实现

【作者】 杨松；

【导师】 胡钢；

【作者基本信息】 电子科技大学 ， 通信与信息系统， 2005， 硕士

【摘要】 光突发交换中,交换的带宽粒度介于一个波长带宽和一个分组传送所需带宽之间,比光线路交换带宽利用率高,又比光分组交换更贴近实用化。可以说,OBS结合了光线路交换和光分组交换两者的优点且克服了两者的部分缺点,是两者之间的平衡选择。而GMPLS是代表网络智能化方向的协议体系。将二者结合是本文的创新之处,同时二者的结合也代表了未来光传输网发展的趋势。我首先研究光突发交换网以及GMPLS 体系,分析了LOBS 的研究成果的优缺点,比较基于GMPLS 的光突发交换与LOBS 的优点,并给出基于GMPLS 的光突发交换的边缘节点中的具体实现方法以及对具体协议的一些修改来适应我们的实验系统。我在光突发交换关键技术和实验系统这个项目主要完成以下硬件实现及测试工作:1 千兆以太网业务接入的实现:先研究802.3 协议,再根据基于GMPLS 的光突发交换的要求写出用FPGA 实现的方案,与导师和负责其它部分工作的同学协商通过后用VERILOG 语言实现,电路板做好后先用我的模块自环,用sniffer 向FPGA 收发数据不掉包,最后大家联调可以实现视频点播。2 光突发交换实验系统的突发接受的能力的测试:先测试试验板上要测试的芯片的通道的工作情况。然后制定试验方案测试突发数据的接收能力。测出结果满足要求。最后联调时也证明了。在项目中,我负责了不少硬件调试工作,从中也学到不少知识,并有一些心得。更多还原

【Abstract】 In Optical Burst Switching, the granularity of bandwidth is between abandwidth of wavelength and a bandwidth that meets the need of agrouping transmitting, which is more efficient than that of OpticalCircuitry Switching and more practical than Grouping Optical Switching.That is to say OBS has the merits of Optical Circuitry Switching andGrouping Optical Switching, meanwhile OBS gets over some flaws ofthese two kind of Switching, thus we can say that the OBS is the bestchoice over the Optical Circuitry Switching and Grouping OpticalSwitching. Moreover GMPLS is the protocol system indicating thetendency of network intelligentization. Thus the paper’s innovative pointis to combine the OBS with GMPLS because this kind of combination isthe inevitable tendency in future Optical Transmitting NET.Firstly, the paper analyzes the NET of OBS and GMPLS as well asthe merits and demerits in present researching achievements of LOBS,then compares the merits based on GMPLS and LOBS, at last presents thedetailed implement methods for marginal node of OBS based on GMPLSand some modifications for the protocol so as to fit our experimentalsystem.The followings are the main hardware realization and testing workin the project.●The implement of Gbit Ethernet’s operation access: firstly to studythe 802.3 protocol and write out the implementing scheme using FPGAaccording to the demands of NET based on GMPLS and OBS, use Verilogto write out the program and make the circuit board to test my moduleafter discussing with tutor and other parters, then use Sniffer to send datato and receive data from FPGA, at last all parters test together to realize更多还原