發(fā)布時間：2018-05-10 22:04

  本文選題：業(yè)務類型感知 + OpenFlow　； 參考：《北京郵電大學》2014年碩士論文

【摘要】：由于傳統(tǒng)的電互聯(lián)存在瓶頸,因此隨著大規(guī)模計算系統(tǒng)的發(fā)展,迫切需要將光互聯(lián)引入其中。作為大規(guī)模計算系統(tǒng)的一個重要分支,數(shù)據(jù)中心中存在著不同類型的業(yè)務,這些業(yè)務對網(wǎng)路互聯(lián)時延具有不同的要求,但是在現(xiàn)有的光互聯(lián)網(wǎng)光接口研究中卻很少考慮如何對不同的網(wǎng)絡流量進行有效的適配。因此,本論文提出一種具備業(yè)務感知型組幀機制的光接口,并基于高性能FPGA以及嵌入式硬件平臺,重點討論了其組幀匯聚以及OpenFlow開放式控制機制的設計和實現(xiàn)。 此外,光性能監(jiān)測(Optical Performance Monitoring)在未來全光網(wǎng)絡的性能保障中承擔著重要角色,盡管目前OPM模塊已經(jīng)在一些論文中得到應用,然而卻鮮有OPM模塊設計的相關報道。因此,本論文首次基于檢測低頻拍噪聲監(jiān)測OSNR原理設計并實現(xiàn)了一種可應用于動態(tài)可重構全光網(wǎng)絡的OPM模塊。同時,基于該模塊,設計了種具有OPM監(jiān)測能力以及OpenFlow開放式控制接口的WSON光節(jié)點。 論文的主要工作和創(chuàng)新點可以歸納為以下幾點： 1)面向數(shù)據(jù)中心網(wǎng)絡應用,研究和設計了一種具備業(yè)務感知型組幀機制的光接口,對如何將不同要求的業(yè)務流量進行有效適配進行了重點討論�；贔PGA平臺,對該光接口進行了硬件實現(xiàn)并對各個分模塊進行了波形仿真,仿真結果表明各分模塊都能正常工作。 2)針對數(shù)據(jù)中心內(nèi)光接口的控制需求,通過采用OpenFlow協(xié)議并對其Vendor消息進行相應擴展,實現(xiàn)了中央控制器對光接口上業(yè)務類型的感知以及對組幀策略的配置,并基于實驗網(wǎng)絡平臺成功地對擴展的OpenFlow控制方式進行了實驗驗證 3)首次基于檢測低頻拍噪聲監(jiān)測OSNR的原理,設計并實現(xiàn)了種結構簡單、監(jiān)測速率快、對不同調(diào)制格式透明的OPM模塊。經(jīng)過實驗測試,該模塊可對10Gb/s NRZ QPSK和10Gb/s NRZ OOK信號進行OSNR監(jiān)測,且單次監(jiān)測時間可低至幾十ms。 4)設計了一種具備OPM監(jiān)測能力以及OpenFow開放式控制接口的WSON光節(jié)點,重點討論了中央控制器如何通過擴展的OpenFlow協(xié)議對光節(jié)點上的光交換矩陣進行配置并對光信號進行OPM監(jiān)測。
[Abstract]:Due to the bottleneck of traditional electrical interconnection, with the development of large-scale computing systems, it is urgent to introduce optical interconnection into it. As an important branch of large-scale computing systems, there are different types of services in the data center, which have different requirements for network interconnection delay. However, in the research of optical interface of optical Internet, how to adapt different network traffic effectively is seldom considered. Therefore, this paper proposes an optical interface with a business-aware framing mechanism. Based on the high performance FPGA and embedded hardware platform, the design and implementation of frame aggregation and OpenFlow open control mechanism are discussed. In addition, Optical Performance Monitoring (OPM) plays an important role in the future all-optical network performance assurance. Although the OPM module has been applied in some papers, there are few reports on the design of OPM module. Therefore, based on the principle of low frequency beat noise monitoring (OSNR), a OPM module for dynamic reconfigurable all-optical network is designed and implemented in this paper. At the same time, based on this module, a kind of WSON optical node with OPM monitoring ability and OpenFlow open control interface is designed. The main work and innovation of this paper can be summarized as follows: 1) for the application of data center network, we study and design an optical interface with traffic awareness framing mechanism, and focus on how to adapt the traffic of different requirements effectively. Based on the FPGA platform, the hardware implementation of the optical interface and the waveform simulation of each sub-module are carried out. The simulation results show that each sub-module can work normally. 2) aiming at the control requirement of optical interface in data center, by adopting OpenFlow protocol and extending the corresponding Vendor message, the central controller realizes the perception of the service type on the optical interface and the configuration of framing strategy. The extended OpenFlow control method is successfully verified based on the experimental network platform. 3) based on the principle of detecting low-frequency beat noise monitoring OSNR for the first time, a OPM module with simple structure, fast monitoring rate and transparent modulation format is designed and implemented. The experimental results show that this module can monitor 10Gb/s NRZ QPSK and 10Gb/s NRZ OOK signals by OSNR, and the time of single monitoring can be as low as tens of Ms. 4) A kind of WSON optical node with OPM monitoring ability and OpenFow open control interface is designed, and how the central controller configures the optical exchange matrix on the optical node and monitors the optical signal by the extended OpenFlow protocol is discussed.
【學位授予單位】：北京郵電大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TP393.06

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本文編號：1871095