华为SDN解决方案.ppt

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1、SDN的产品化实践——华为SDN解决方案Content业界SDN思路简介华为企业网络SDN愿景SDN最佳实践与技术创新1123SDN2什么是SDN？SDNSoftware-DefinedNetworkingGartner：Software-definednetworking(SDN)isanewapproachtodesigning,buildingandoperatingnetworksthatfocusesondeliveringbusinessagilitywhileloweringcap

2、italandoperationalcosts.ItisfarmorethanjustanewsetofAPIsdesignedtoreplacecommandlineinterfacesformanagingindividualdevices.VMware:VMwareSoftwareDefinedNetworking(SDN),availabletoday,helpssolvethedatacenternetworkingchallenge.whichvirtualizesthenetwor

3、kandcreateslogicalnetworksthatmeettheagility,performanceandscalerequirementsofvirtualizedapplicationsanddata.网络虚Overlay拟化开放API控制面与数解决实据面解耦际问题ONF：SDNisanewapproachtonetworkinganditskeyattributesinclude:separationofdataandcontrolplanes;auniformvendor-a

4、gnosticinterfacebetweencontrolanddataplanes;alogicallycentralizedcontrolplane;andslicingandvirtualizationoftheunderlyingnetwork.Google:Asnetworkingsystemsscale,whetheritbegrowthinbandwidthorthenumberofusersbeingserved,onehastoworryaboutmanageability,

5、cost-efficiency,robustnessandavailabilityofthenetworkfabric.SDNallowsyoudotacklemanyoftheseproblems.Verizon：VerizonhasdeployedSDNasanoverlaynetworkforvideodistributionservices.Forscaleandflexibility,theSDNframeworkmustsupportmultipleVMdomains,multipl

6、enetworkdomains,andmultipleservices/applicationswithopen,standardinterfaces.SDN主流技术路线OpenFlow技术架构：1、转发与控制分离架构；2、标准化转发面；优点：1、易于流量调度；2、开放生态链；Overlay:网络叠加技术标准网络开放技术架构：1、开放网络设备能力；2、标准化API；优点：1、充分利用现有设备；2、快速实现；NFV(NetworkFunctionVirtualization)技术架构：1、网关功能

7、软件化；2、归一化平台；优点：1、快速业务供应；2、降成本；技术架构：1、网络边缘软件化；2、Overlay技术；优点：1、与物理网络解耦；2、灵活部署；3NICIRA已经被VMware收购ONF所定义的SDN架构ONF定义的SDN架构Software-DefinedNetworkArchitectureNetworking(SDN):TheNewNormforNetworks特征：控制转发分离、集中控制器、网络开放可编程、转发面抽象4APP1APPnOF:OpenFlowThinSecureS

8、WChannelControllerSwitchingFlowTableHWOFSwitchOFSwitchOFSwitchOFSwitchSource:ONFwhitepaper--Software-DefinedOpenFlow实际部署图OpenFlow交换机2011.0252009.12Openflow1.0单级流表L2IPv4流表定义2012.4ONF开放网络联盟：OpenFlow的发展2012.102012.92011.12Openflow1.2，IPv6，Extensibleexpr