ciscovPCVirtualPortChannel技术详解PPT学习教案

1、会计学1ciscovPCVirtualPortChannel技术详解技术详解第1页/共50页传统STP 二层网络逻辑拓扑VPC 网络逻辑拓扑第2页/共50页第3页/共50页vPC peernon-vPC devicevPC peer-keepalive linkvPC member portvPCvPC member portCFS protocolvPC peer-linkvPC Domain第4页/共50页vPC Domain第5页/共50页vPC peer-link第6页/共50页CFS MessagingSTP does send BPDUsIGMP updatesMAC update

2、sSTP doesnt send BPDUsHSRP Standby-ActiveL3IGMP updatesMAC updates第7页/共50页n系统会对这些不一致的配置产生Syslog第8页/共50页不能通过peer-link在路由可以使用引擎上的管理口vPC peer-keepalive link第9页/共50页vPC member portvPC member port第10页/共50页vPC member portvPCNormal Port-channel port第11页/共50页第12页/共50页N7k01N7k02第13页/共50页第14页/共50页MAC_AMAC_BSW

3、3SW2SW4SW1vPC1vPC2vPC_PLL2L3ECMPPacket SendECMPPort channel path selectionPacket FloodingPacket FloodingPacket(s) blocked on vPC member ports, vPC peer-link traversedvPC PK-LinkCFS MAC table update message第15页/共50页MAC_AMAC_BSW3SW2SW4SW1vPC1vPC2vPC_PLL2L3ECMPPacket SendECMPPort channel path selection

4、Local forwarding, previously learned destinationvPC PK-Link第16页/共50页第17页/共50页InfrastructureKernelVDC 1VDC 2VDC 3GLBPVDC 4Layer 3 ProtocolsOSPFBGPEIGRPGLBPHSRPIGMPPIMSNMPVDC 2Layer 2 ProtocolsVLANPVLANUDLDCDP802.1XSTPLACPCTSVirtual Device Context一个物理设备上虚拟多个逻辑设备灵活的硬件资源分配软件功能以及故障隔离有效提高资源利用率安全独立的管理模式Lay

5、er 2 ProtocolsLayer 3 ProtocolsVLANPVLANOSPFBGPEIGRPHSRPIGMPUDLDCDP802.1XSTPLACPPIMCTSSNMPVDC 1第18页/共50页VDC1VDC2VDC2VDC3VDC3VDC4VDC4VDC1Nexus7010Nexus7010Distribution Core Access 第19页/共50页第20页/共50页4.1(3)4.1(3)4.2(1)4.1(3)4.2(1)4.2(1)第21页/共50页第22页/共50页vPCvPCSTP is running to manage loops outside of v

6、PCs direct domain, or before initial vPC configuration第23页/共50页MAC_AMAC_BSW3SW2SW4SW1vPC1vPC2vPC_PLL2L3ECMPPacket SendECMPSTP RootSTP Root BackupPacket FloodingPacket FloodingSTP process updated, BDPUs not forwarded on vPC member portsBPDUs forwardedvPC PK-Link第24页/共50页AggregationAccessData Center C

7、oreBLRNEBPDUguardLoopguardRootguardNetwork portEdge or portfast port type-Normal port typeBRRNN-RRRRRR-BEBBEBELayer 3Layer 2 (STP + Rootguard)Layer 2 (STP + BPDUguard)LESecondaryRootHSRPSTANDBYPrimaryRootHSRPACTIVEE-PrimaryvPCSecondaryvPCvPCDomain第25页/共50页第26页/共50页vpc peeractiveL3L2HSRP/VRRP “Standb

8、y”: Active for shared L3 MACHSRP/VRRP “Active”: Active for shared L3 MAC第27页/共50页第28页/共50页MAC_AMAC_BSW3SW2SW4SW1vPC1vPC2vPC_PLL2L3ECMPPacket SendECMPHSRP ActiveHSRP StandbyHSRP active MAC is populated into the L3 hardware forwarding tables, creating a local forwarding capability on the HSRP standby

9、devicevPC PK-LinkHSRP active process communicates the active MAC to its neighbor. Only the HSRP active process responds to ARP requests第29页/共50页vPC PLvPC PKLL3L2Local Routing for peer router mac TrafficN7k(config-vpc-domain)# peer-gateway第30页/共50页第31页/共50页接入交换机接入交换机VPCVPC Primary PrimaryHSRPHSRP Act

10、ive ActiveSTPSTP Root RootVPCVPC Secondary SecondaryHSRPHSRP Standby StandbySTPSTP Root Secondary Root Secondary L2L2L3L3ECMPECMP123456第32页/共50页接入交换机接入交换机VPCVPC Primary PrimaryHSRPHSRP Active ActiveSTPSTP Root RootVPCVPC Secondary SecondaryHSRPHSRP Standby StandbySTPSTP Root Secondary Root Secondary

11、 L2L2L3L3ECMPECMP第33页/共50页接入交换机接入交换机VPCVPC Primary PrimaryHSRPHSRP Active ActiveSTPSTP Root RootVPCVPC Secondary SecondaryHSRPHSRP Standby StandbySTPSTP Root Secondary Root Secondary L2L2L3L3ECMPECMP第34页/共50页接入交换机接入交换机VPCVPC Primary PrimaryHSRPHSRP Active ActiveSTPSTP Root RootVPCVPC Secondary Secon

12、daryHSRPHSRP Standby StandbySTPSTP Root Secondary Root Secondary L2L2L3L3ECMPECMP第35页/共50页接入交换机接入交换机VPCVPC Primary PrimaryHSRPHSRP Active ActiveSTPSTP Root RootVPCVPC Secondary SecondaryHSRPHSRP Standby StandbySTPSTP Root Secondary Root Secondary L2L2L3L3ECMPECMP第36页/共50页接入交换机接入交换机VPCVPC Primary Pri

13、maryHSRPHSRP Active ActiveSTPSTP Root RootVPCVPC Secondary SecondaryHSRPHSRP Standby StandbySTPSTP Root Secondary Root Secondary L2L2L3L3ECMPECMP12第37页/共50页接入交换机接入交换机VPCVPC Primary PrimaryHSRPHSRP Active ActiveSTPSTP Root RootVPCVPC Secondary SecondaryHSRPHSRP Standby StandbySTPSTP Root Secondary Ro

14、ot Secondary L2L2L3L3ECMPECMP21第38页/共50页接入交换机接入交换机VPCVPC Primary PrimaryHSRPHSRP Active ActiveSTPSTP Root RootVPCVPC Secondary SecondaryHSRPHSRP Standby StandbySTPSTP Root Secondary Root Secondary L2L2L3L3ECMPECMP第39页/共50页第40页/共50页接入交换机接入交换机VPCVPC Primary PrimaryHSRPHSRP Active ActiveSTPSTP Root Roo

15、tVPCVPC Secondary SecondaryHSRPHSRP Standby StandbySTPSTP Root Secondary Root Secondary L2L2L3L3ECMPECMP第41页/共50页Orphan PortsOrphan Ports第42页/共50页Router7k17k2SwitchPo1Po2RouterSwitchL3 ECMPPo2第43页/共50页L3L2VLAN AVLAN B第44页/共50页VSS vPC支持情况设备型号Catalyst 6500Nexus 7000, Nexus 5000链路捆绑L2跨机箱链路捆绑(Active-act

16、ive)是是是否支持L3 链路捆绑是否控制层面/ HA控制层面统一独立，双活配置文件统一独立引擎冗余跨机箱冗余每个机箱都有冗余L2链路捆绑协议LACP, PaGP(+)LACP是否需要STP 否否L3单个逻辑网关是 (不需要FHRP)是, active-active HSRP路由进程单个相互独立路由邻居减少相互独立组播PIM DR单个相互独立 (DR&N-DR)第45页/共50页第46页/共50页第47页/共50页vPC Peer-linkS1S2S3S4vPC PrimaryvPC SecondaryvPC1Bridge PriorityVLAN 1 4KVLAN 2 8KBridge Prior