课程说明...................................................................................................................................1课程引见.....................................................................................................................................1课程目标.....................................................................................................................................1第1章QoS的基本概念.............................................................................................................21.1基本概念...............................................................................................................................21.2IPQoS的三种模型...............................................................................................................41.2.1Best-Effort模型..........................................................................................................51.2.2IntServ模型................................................................................................................61.2.3DiifServ模型体系结构..............................................................................................10第2章报文的分类及标记........................................................................................................12第3章流量监管与整形............................................................................................................133.1流量监管－CAR..................................................................................................................133.2流量整形－GTS...................................................................................................................153.3物理接口总速率限制－LR...................................................................................................17第4章拥塞管理......................................................................................................................184.1先进现出队列－FIFO.....................................

RTL8370N-VB:Single-chip8-portgigabitnon-blockingswitcharchitectureEmbedded8-port10/100/1000Base-TPHYEachportsupportsfullduplex10/100/1000Mconnectivity(halfduplexonlysupportedin10/100Mmode)Full-duplexandhalf-duplexoperationwithIEEE802.3xflowcontrolandbackpressureSupports9216-bytejumbopacketlengthforwardingatwirespeedSupportsRealtekCableTest(RTCT)functionSupports96-entryACLRulesSearchkeyssupportphysicalport,Layer2,Layer3,andLayer4informationActionssupportmirror,redirect,dropping,priorityadjustment,trafficpolicing,CVLANdecision,andSVLANassignmentSupports5typesofuserdefinedACLruleformatfor64ACLrulesOptionalper-portenable/disableofACLfunctionOptionalsettingofper-portactiontotakewhenACLmismatchSupportsIEEE802.1QVLANSupports4KVLANsand32ExtraEnhancedVLANsSupportsUn-tagdefinitionineachVLANSupportsVLANpolicingandVLANforwardingdecisionSupportsPort-based,Tag-based,andProtocol-basedVLANUpto4Protocol-basedVLANentriesSupportsper-portandper-VLANegressVLANtaggingandun-taggingSupportsIVL,SVL,andIVL/SVLSupports4096-entryMACaddresstablewith4-wayhashalgorithmUpto4096L2/L3FilteringDatabaseSupportsSpanningTreeportbehaviorconfigurationIEEE802.1wRapidSpanningTreeIEEE802.1sMultipleSpanningTreewithupto16SpanningTreeinstancesSupportsIEEE802.1xAccessControlProtocolPort-BasedAccessControlMAC-BasedAccessControlGuestVLANSupportsQualityofService(QoS)SupportsperportInputBandwidthControlTrafficclassificationbasedonIEEE802.1p/Qprioritydefinition,physicalPort,IPDSCPfield,ACLdefinition,VLANbasedpriority,MACbasedpriority,andSVLANb

本文次要阐述QoS技术的研究现状及其技术展望

opkgupdate更新可以获取的软件包列表opkgupgrade对曾经安装的软件包升级opkglist获取软件列表opkginstall安装指定的软件包opkgremove卸载曾经安装的指定的软件包上传至TMP目录下opkginstall/tmp/luci-app-qos-emong_1_all.ipk--force-depends

具有轻量级描绘的基于Qos的服务选择，用于面向服务的大规模物联网

面对当前网络中流量的增长、业务种类的增多，SDN中多数的路由算法只支持一种QoS参数，没有兼顾对系统调度服务公平性的考虑，然而多参数限制的QoS明显是NP难问题，该问题用普通的路由算法难以处理，引进蚁群算法，在蚁群算法的基础上，将链路的时延、分组丢失率引入蚁群算法中，作为算法选择路径的依据，提出一种新的路由算法。
该算法在对不同业务属性的数据流分类的基础上，根据网络的实时状况，为不同业务属性的数据流选择合适的路径，对网络中的数据流进行多路径传输。
仿真实验表明，该算法能有效地降低数据流的时延、分组丢失率。

PCIExpress3.0isthelatestgenerationofthepopularperipheralinterfacefoundinvirtuallyeveryPC,server,andindustrialcomputer.Itshighbandwidth,lowlatency,andcost-to-performanceratiomakeitanaturalchoiceformanyperipheraldevicestoday.EachnewgenerationofPCIExpressaddsmorefeatures,capabilitiesandbandwidth,whichmaintainsitspopularityasadeviceinterconnect.MindShare'sbookstakethehardworkoutofdecipheringthespecs,andthisonefollowsthattradition.MindShare'sPCIExpressTechnologybookprovidesathoroughdescriptionoftheinterfacewithnumerouspracticalexamplesthatillustratetheconcepts.Writteninatutorialstyle,thisbookisidealforanyonenewtoPCIExpress.Atthesametime,itsthoroughcoverageofthedetailsmakesitanessentialresourceforseasonedveterans.次要内容如下：PCIExpressOriginsConfigurationSpaceandAccessMethodsEnumerationProcessPacketTypesandFieldsTransactionOrderingTrafficClasses,VirtualChannelsandArbitration(QoS)FlowControlACK/NAKProtocolLogicalPHY(8b/10b,128b/130b,Scrambling)ElectricalPHYLinkTrainingandInitializationInterruptDelivery(Legacy,MSI,MSI-X)ErrorDetectionandReportingPowerManagement(forbothsoftwareandhardware)2.0and2.1Features(suchas5.0GT/s,TLPHints,andMulti-Casting)3.0Features(suchas8.0GT/s,andanewencodingscheme)ConsiderationsforHighSpeedSignaling(suchasEqualization)

在日常工作中，钉钉打卡成了我生活中不可或缺的一部分。然而，有时候这个看似简单的任务却给我带来了不少烦恼。 每天早晚，我总是得牢记打开钉钉应用，点击"工作台"，再找到"考勤打卡"进行签到。有时候因为工作忙碌，会忘记打卡，导致考勤异常，影响当月的工作评价。而且，由于我使用的是苹果手机，有时候系统更新后，钉钉的某些功能会出现异常，使得打卡变得更加麻烦。 另外，我的家人使用的是安卓手机，他们也经常抱怨钉钉打卡的繁琐。尤其是对于那些不太熟悉手机操作的长辈来说，每次打卡都是一次挑战。他们总是担心自己会操作失误，导致打卡失败。 为了解决这些烦恼，我开始思考是否可以通过编写一个全自动化脚本来实现钉钉打卡。经过一段时间的摸索和学习，我终于成功编写出了一个适用于苹果和安卓系统的钉钉打卡脚本。