在华为设备上配置VRRP MSTP实现网关冗余和负载分担

拓扑如下图所示：

具体配置如下：

SW3： 先创建vlan10、20 vlan batch 10 20 然后在接口下划分trunk、access模式 interface Ethernet0/0/1 port link-type access port default vlan 10 interface Ethernet0/0/2 port link-type access port default vlan 20 interface Ethernet0/0/3 port link-type trunk port trunk allow-pass vlan 10 20 interface Ethernet0/0/4 port link-type trunk port trunk allow-pass vlan 10 20 配置mstp stp mode mstp stp region-configuration region-name qgtest instance 10 vlan 10 instance 20 vlan 20 active region-configuration SW1： 先创建vlan10、20 vlan batch 10 20 配置链路聚合和trunk口 interface Eth-Trunk1 trunkport int g0/0/1 trunkport int g0/0/2 interface Eth-Trunk1 port link-type trunk port trunk allow-pass vlan 10 20 interface GigabitEthernet0/0/3 port link-type trunk port trunk allow-pass vlan 10 20 配置mstp stp mode mstp stp region-configuration region-name qgtest instance 10 vlan 10 instance 20 vlan 20 active region-configuration stp instance 10 root primary stp instance 20 root secondary 配置VRRP interface Vlanif10 ip address 192.168.10.253 255.255.255.0 vrrp vrid 10 virtual-ip 192.168.10.254 vrrp vrid 10 priority 120 interface Vlanif20 ip address 192.168.20.252 255.255.255.0 vrrp vrid 20 virtual-ip 192.168.20.254 vrrp vrid 20 priority 100 SW2： 先创建vlan10、20 vlan batch 10 20 配置链路聚合和trunk口 interface Eth-Trunk1 trunkport int g0/0/1 trunkport int g0/0/2 interface Eth-Trunk1 port link-type trunk port trunk allow-pass vlan 10 20 interface GigabitEthernet0/0/3 port link-type trunk port trunk allow-pass vlan 10 20 配置mstp stp mode mstp stp region-configuration region-name qgtest instance 10 vlan 10 instance 20 vlan 20 active region-configuration stp instance 20 root primary stp instance 10 root secondary 配置VRRP interface Vlanif20 ip address 192.168.20.253 255.255.255.0 vrrp vrid 20 virtual-ip 192.168.20.254 vrrp vrid 20 priority 120 interface Vlanif10 ip address 192.168.10.252 255.255.255.0 vrrp vrid 10 virtual-ip 192.168.10.254 vrrp vrid 10 priority 100

备注：如果SW1有上行接口和上行链路时，其中一个发生故障，VRRP默认是无法感知的，即主备状态无法切换，数据包无法发送出去，这是就要用到track功能。具体配置如下：

SW1/SW2： vrrp 10 track int g0/0/3 reduced 30

假设G0/0/3为上行口，配置完这条命令之后，即当上行链路发生故障时，其优先级减少30,然后当前优先级小于Backup状态的三层交换机，则主备状态发生切换。