配置拓扑如下：核心连接楼层、服务器均为trunk 链路，两个核心之间为4条线路，做链路聚合，跑trunk。7506A 配置stp instance0 root primarystp instance2 root secondarystp instance 3 root primarystp instance 4 root secondarystp instance 5 root primarystp instance 6 root secondarystp instance 7 root primarystp TC-protection enablestp region-configuration region-namemstp instance2 vlan2 instance 3 vlan3 instance 4 vlan4 instance 5 vlan5 instance 6 vlan6 instance 7 vlan7 active region-configurationstp enablevlan 2 vlan 3vlan 4vlan 5vlan 6vlan 7interface Vlan-interface2ip address 192.168.2.251 255.255.255.0vrrp vrid 2 virtual-ip 192.168.2.254interface Vlan-interface3ip address 192.168.3.251 255.255.255.0vrrp vrid 3 virtual-ip 192.168.3.254vrrp vrid 3 priority 110interface Vlan-interface4ip address 192.168.4.251 255.255.255.0vrrp vrid 4 virtual-ip 192.168.4.254interface Vlan-interface5ip address 192.168.5.251 255.255.255.0vrrp vrid 5 virtual-ip 192.168.5.254vrrp vrid 5 priority 110 interface Vlan-interface6ip address 192.168.6.251 255.255.255.0vrrp vrid 6 virtual-ip 192.168.6.254interface Vlan-interface7ip address 192.168.7.251 255.255.255.0vrrp vrid 6 virtual-ip 192.168.7.254vrrp vrid 6 priority 110link-aggregation group 1 mode manualvrrp ping-enableinterface GigabitEthernet2/0/1port link-type trunkport trunk permit vlan allport link-aggregation group 1interface GigabitEthernet2/0/2port link-type trunkport trunk permit vlan allport link-aggregation group 1interface GigabitEthernet2/0/3port link-type trunkport trunk permit vlan allport link-aggregation group 1interface GigabitEthernet2/0/4port link-type trunkport trunk permit vlan allport link-aggregation group 17506B 配置stp instance 0 root primarystp instance 2 root primarystp instance 3 root secondarystp instance 4 root primarystp instance 5 root secondarystp instance 6 root primarystp instance 7 root secondarystp TC-protection enablestp region-configuration region-name mstpinstance 2 vlan 2instance 3 vlan 3instance 4 vlan 4instance 5 vlan 5instance 6 vlan 6instance 7 vlan 7active region-configurationstp enablevlan 2 vlan 3vlan 4vlan 5vlan 6vlan 7interface Vlan-interface2ip address 192.168.2.252 255.255.255.0vrrp vrid 2 virtual-ip 192.168.2.254vrrp vrid 2 priority 110interface Vlan-interface3ip address 192.168.3.252 255.255.255.0vrrp vrid 3 virtual-ip 192.168.3.254interface Vlan-interface4ip address 192.168.4.252 255.255.255.0vrrp vrid 4 virtual-ip 192.168.4.254vrrp vrid 4 priority 110interface Vlan-interface5ip address 192.168.5.252 255.255.255.0vrrp vrid 5 virtual-ip 192.168.5.254 interface Vlan-interface6ip address 192.168.6.252 255.255.255.0vrrp vrid 6 virtual-ip 192.168.6.254vrrp vrid 6 priority 110interface Vlan-interface7ip address 192.168.7.252 255.255.255.0vrrp vrid 6 virtual-ip 192.168.7.254link-aggregation group 1 mode manualvrrp ping-enableinterface GigabitEthernet2/0/1port link-type trunkport trunk permit vlan allport link-aggregation group 1interface GigabitEthernet2/0/2port link-type trunkport trunk permit vlan allport link-aggregation group 1interface GigabitEthernet2/0/3port link-type trunkport trunk permit vlan allport link-aggregation group 1interface GigabitEthernet2/0/4port link-type trunkport trunk permit vlan allport link-aggregation group 1楼层交换机配置(S5100)vlan2 to 7stp bpdu-protectionstp enablestp region-configuration region-name mstp instance 2 vlan 2 instance 3 vlan 3 instance 4 vlan 4 instance 5 vlan 5 instance 6 vlan 6 instance 7 vlan 7 active region-configuration所有连接PC机的端口，全部配置边缘端口（stp edged-port enable）楼层连接核心的两条上行链路配置为trunk，这两个端口不能配置边缘端口注： 双机做完后，可以用dis stp brief 查看状态1、两个核心上所有连接楼层接入的端口都应该为fordowing状态2、楼层接入交换机主核心线路端口应该为fordowing，从核心线路端口应该为discard 核心间的链路聚合，随后有相关日志描述。