eCore：阿里巴巴面向服务的数据中心基础设施网络架构及白盒演进.pdf

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1、Dennis Cai(presenting on behalf of Roy Jiang)，Alibaba CloudManish Mukherjee，Cisco eCoreNetwork Architecture and Whitebox Evolution of Alibabas Service-Oriented DCI NetworkeCoreNetwork Architecture and Whitebox Evolution of Alibabas Service-Oriented DCI NetworkDennis Cai(presenting on behalf of Roy J

2、iang)，Alibaba CloudManish Mukherjee，CiscoNETWORKINGAlibaba Cloud Global Network Footprint2991RegionsAZs3200+Edge sitesAlibaba CloudAlibaba Global Network(AGN)Current WANRouterMPLSSR-TEVendorsM2M TrafficM2U TrafficL3VPNDiffservISISBGPv4/v6SimplicitySingle-chip&SingleStack ComposableArchitecture Easy

3、to scaleMinimizeBlastRadiusStabilitySimplicityService-Oriented NetworkDesign PrinciplesArchitectural GoalsService-OrientedBuild andoperate DCI like DCN(fully automated)Operation Excellence eCore Alibabas Next Generation Predictable DCI Networkwith Massive ScaleEdgeRoleSRv6 VPN PE router overlayCateg

4、oriesDC edge-ESRBorder edge-BESRRouting edge-SRR（Service Route Reflector）CoreRoleSRv6 VPN P router-underlaySRv6 Traffic EngineeringLayersNational Core-ECRegional Core-EAR（collocated with ESR）ESRDC EdgeESRDC EdgeECECECECSPAGNDCDCBESRBorder EdgeEAREARSRRRouting EdgeEAREARESRESREAREAREAREARBESRSRRECECE

5、CECeCore CoreeCore edgeAlibabanetworkInternetHigh Level Architecture OverviewSingle ChipPizza-boxNO chassisSingle StackSRv6 onlyNO MPLSIn-house Developed SoftwareAliNOS（based on SONiC）Feature velocity+live patchSRv6 EnableDeep BufferMACSec Enable12.8THW offload BFDLarge LPMSingle-chip&Single-StackIn

6、-house developed white-box router with Cisco Silicon One Q200Dual-NOS/dual-chip:commercial pizza box from H3C/Ruijie with BRCM ASICStandard Network ModulesNode/Cluster/GroupElastics and ResilienceMulti-Plane(redundance)Multi-Space(capacity scaling)Multi-Routing Domain(failureisolation,small blast ra