网络处理器技术综述

:1001-893X(2003)01-0006-063(,100084):,,,:;;;:TN915.05:ASummaryonNetworkProcessorTechnologyJIANGui-zhou,GENing,FENGChong-xi(DepartmentofElectronicEngineering,TsinghuaUniversity,Beijing100084,China)Abstract:Inthispapersometypicalarchitecturesandcriticalroleofnetworkprocessorinthenetworkinfrastructureareintroduced.Thekeytechnologyonnetworkprocessordesignisconcluded.Thepossi2bledevelopingtrendofnetworkprocessorisalsopresented.Keywords:Accessnetwork;Networkinfrastructure;Networkprocessor;Summarization,,,,(A2SIC),,ASIC,,,,,CPUASIC,IDG[1]:(HardWire)(NP),[3]:,,,;,,;,,,,6:2002-08-28:(69896242)20031SUMMARIZATION©1995-2004TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.(VLAN)QoS;,,NPRISC,,,:NP;DRAM,SRAM;;NP;NP;;FabricCPURAM;,;,,,,,NP,,,,,EthernetATM,OSI-5,,,244:;;;4,DRAM,2,8,,1610G160G,VLANIPURL,1/N,16,,,,,,,,,,,;,CPU,,,,,:C,,,,,NP,NP720031SUMMARIZATION©1995-2004TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.1.INTELIXP12000,INTEL,IXP1200,StrongARM6RISC,,,4,241,Stron2gARM1IXP120032RISC,16kbyteCache8kbyteCache,ARMAMBAPCISDRAM;200MHz,ALU,128128,1kbyte;6485MHzIX,4.2GbpsCSIX,64SDRAM,6.4Gbps,256Mbyte,32SRAM,3.2Gbps,8Mbyte,Hash,4864Hash3266MHzPCIINTELIXP1200,,IXP1200INTEL,StrongARM2.MOTOROLAC-5C-5C-PORT,,2,C-516(CP),RISC,RISC;2C-5C-55,Swith-fabricC-5RISC300,RISCC,RISC,CRCT/ESTM-16820031SUMMARIZATION©1995-2004TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.,POSATMMPLS,C-55Gbps3000MIPSC-5C-5,C-5,,C-5NP4,CP4MOTOROLA,C-5MOTOROLA,C-53.CISCOToaster2CISCO,OC-48,Toaster2(3),,16ARM7,ARM7,OC-48,CISCOXMC(),ARM7,RISC,64,CISCONP,,CISCONPXMC,,XMC125MHz,ASIC,NP(200MHz)16XMC,4000MIPS;,:,,XMCCISCO-10000NP8,2,47,3,SDRAM4SDRAM,,,ASICSDRAM3CISCOToaster24.SITERAIQ2000SITERAIQ2000(4),,,,8NP,I/O,16800MHzDRAM64100MHzCPU,MIPS4Focus,FocusATMUPTOPIA,200MHz,12.8GbpsSITERA4R3000CPUCPUMIPS-I,:,;,,;64,,CPUDRAM920031SUMMARIZATION©1995-2004TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.,IQ2000DRAM;,;QoS,4IQ20004CPU3264,,CPU,5,32332,5,DRAM,CPU,,4,MIPS5.IBMNP,,,4Gbps,AMCC,,2.5Gbps,,(RED)EZCHIP,,,AgereFPPPMCClassifier,,NP,,,,,,NPCPUPC,,NP,,Hash,,,,,,,,;,SRAMCAM,,,;,,,;,,,,,,,(29)0120031SUMMARIZATION©1995-2004TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.AD;(3),,,,,;(4),6,,,,,206DDS-1,DDS-1,,,22DDS-122791040968192825013654159284.982090180181.27300.01349.984.8319.7590.25180180.94299.81350.32,DDS,:;;ADAD,,AD,[1].[M].,1983.[2],.[M].1992.[3],,.[J].,2001.[4]MalikOP,HopeGS,HancockGC,etal.Fre-quencyMeasurementforUsewithaMicroproces-sor-BasedWaterTurbineGovernor[J].IEEETrans.OnEnergyConv.,1991,6(3):361366.[5],.[J].,1994,(6):5761.[6]R.Micheletti.PhaseAngleMesurementBetweenTwoSi2nusoidalSignals[J].IEEETransInstrumMeas,(No.40),Feb.,1991.(1976-),,,;(1978-),,,;(1938-),,,(10)[1]IBMMicroelectronicsDivision.TheNetworkprocessorEnablingTechnologyforHigh-PerformanceNetwork2ing[S],2000.2.[2]DavidHusak.NetworkingProcessorstheBuildingblocksofNextGenerationnetworking[J].ElectronicEngineer2ing,2000,(9):5762.[3]WernerBux,WolfgangE.Denzel,TonEngbersenetal.TechnologiesandBuildingBlocksforFastPacketfor2warding[J].IEEEcommunicationMagazine,2001,(1):7076.[4]AmirEyal.ChallengesinDesign40GbNetworkProces2sors[R].MicroprocessorReport,June,2001:1923.[5]MotorolaWhitepaper,NetworkingProcessors:Adefini2tionandcomparison[S].2000.[6]AgereWhitepaper.TheChallengeforNextGenerationnetwokprocessors[S].1999.[7]IXP1200Datasheet[S].IntelCorp.2000.[8]LinleyGwennap.Ciscorollsitsownnpu[R].Micropro2cessorReport,2000,Nov:1923.(1975-),,;(1970-),,;(1930-),,9220031RESEARCH&DEVELOPMENT©1995-2004TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.