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《BCM56620_Architecture Introduction》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。
1、BCM56620(Triumph)ArchitectureIntroductionAsiaApplicationEngineeringOct.,2007BROADCOMPROPRIETARY&CONFIDENTIAL1Outline•Introduction(FeatureList/Ingress,EgressPipelines,…)•VLANandTagginglookup/implementation•Layer2LookupsandEnhancements•Layer3LookupsandEnhancements•MemoryM
2、anagementUnit(MMU)•Content-AwareProcessor(VCAP,ICAP,Ext-ICAPandECAP)•OtherEnhancedFeatures–Mirroringenhance,ERSPAN,IPFIX•Applications–MPLSBROADCOMPROPRIETARY&CONFIDENTIAL2BCM56624“Triumph”Extensible112GbpsPacketProcessor4xHiGig2or4x10GEExpansion•48GbpsFullDuplexLineRate
3、Processing–SingleChip48GbpsLineCard!XAUIXAUIXAUIXAUITXAUIXAUIXAUIXAUITCL2CA•AMExpandableTables@XGSEconomicsL3LPMMContentAware™EngineContentAware™Engine–L2,L3,ACL@48GbpsFlow/ACLclassify,filter,modify:parallellookupsclassify,filter,modify:parallellookups–PurposeBuiltforIP
4、v6w/uRPFL2/L333L2L2/L3L3L3•DynamicPacketBufferMemory3636L2Processing6b6bTablesProcessingTablesbDbDTablesVRF,MPLSVRF,MPLSTables–BetterBurst/CongestionHandlingPolicyDDDDDRDR&R2R2MetersMemoryManagerCounters22MetersMemoryManager•MetroVPNFeatureSetCountersSP/WRR/WFQCountersS
5、P/WRR/WFQ–EnhancedMetroQinQEnginePCIeCPUGEMAC–TR-101VLANCrossConnectPCIeCPUGEMAC–L2MPLS(VPWS&VPLS)–L3MPLS(RFC2547)PCIeCPU48xGbE(2lanes)SGMIIBROADCOMPROPRIETARY&CONFIDENTIAL5BCM56620FeatureEnhancementsFeaturesBCM56510BCM56620TableExpansionNoYesClass-basedstationNoStation
6、movementwithinfourclasses/prioritiesperportMAC(VLAN/VFIbased)LimitNoYesPrivateVLANNoYesSharedVLANNoYesVLANProfilesSupports16VLANprofilesSupportsmultipleVLANprofilesindifferentstagesoftheswitchinglogicDoubleTaggingSupportsProviderBridgingEnhanceddouble-taggingtobeabletos
7、upportmanyapplicationsthroughflexibletwo-tagginglookupsVLANSwitching(VLANNoYesCross-Connect)TR-101VLANRangeCheckNoYesBROADCOMPROPRIETARY&CONFIDENTIAL6BCM56620FeatureEnhancementsFeaturesBCM56510BCM56620802.1adtaggedpacketsupportSimultaneousdouble-taggingSimultaneousdoubl
8、e-taggingandnon-andnon-double-taggingdouble-taggingaresupported,withexpandedarenotsupported.supportmulti-tagtr
