数据中心Nexus课程.vPC.ppt

* * * * * * * * * * 上行链路和peer-link 同时挂掉, 比如一个M模块出现故障, 推荐配置tracking on a single-molule vPC * * This convergence is designed to overcome the delay involved in ARP table restoration for IPv4 when the peer link port channel flaps or when a vPC peer comes back online. * * * * * * * * * * * * * 强调勿用configure sync功能配置要启用FCoE功能的接口, 例如 e101/1/20,e102/1/20 * * * * * * * * * * * * * * * * * * * * * * * * * * type 1 global consistency , type 1 interface consistency, mismatch results in vPC failing to form if new vPC mismatch results in secondary vpc interface being suspended if change in an active vPC type 2 global consistency, Mismatch results in log message but not vPC failure Graceful Consistency Check, 默认开启此功能,如果type1参数不一致,standby的sw 是挂起的interface, 关闭此功能,双方都挂起是vlan. 可以看Local suspended VLANs - 1,10 * 先讲System-id 与 lag-id的关系, Show vpc role 里面的 mac 地址, 与 N5K2上show lacp system-identifier的关系. 最后 N7K-3上 no spanning-tree bridge assurance 两个peer上:show vpc statistics vpc 30 N7K-3的po 30上 spanning-tree port type edge trunk 两个peer上:show vpc statistics vpc 30 N7K-4上 vlan 10 shu, 将会出现prune vlan 10现象. * * * * * * * * show interface e3/23,e4/20 | in Ethernet3/23|Ethernet4/20|seconds input rate|seconds output rate * show interface e3/29,e4/29 | in Ethernet3/29|Ethernet4/29|seconds input rate|seconds output rate“ Ctrl shif 6 结束 再ping ping show port-channel load-balance forwarding-path interface port-channel 30 src-interface ethernet 1/5 vlan 10 dst-ip 最后再Shut N7K4的 interface e3/29 * Brigde assurance介绍： /en/US/docs/switches/lan/catalyst6500/ios/12.2SX/configuration/guide/stp_enha.html#wp1052528 STP channel-misconfig 介绍: /en/US/tech/tk389/tk621/technologies_tech_note09186a00806cd87b.shtml 默认情况下 ,开启了spanning-tree port type network 功能的接口,会自动启动Bridge Assurance功能. 启动的Bridge Assurance的接口会双向接收和发送BPDU,保持KeepAlive,当接口收不到BPDU时,会将接口置于inconsistent状态 一般在两个桥间primary和secondary桥间开启spanning-tree port type network. Show spanning tree summary. BPDU guard在edge接口 spanning-tree port type e