华为设备配置MSTP

1. 配置MSTP基本功能
   （1）配置MST域和创建实例
   [LSW1]vlan batch 2 to 20
   [LSW1]stp region-configuration
   [LSW1-mst-region]region-name a1
   [LSW1-mst-region]instance 1 vlan 2 to 10
   [LSW1-mst-region]instance 2 vlan 11 to 20
   [LSW1-mst-region]active region-configuration
   [LSW2]vlan batch 2 to 20
   [LSW2]stp region-configuration
   [LSW2-mst-region]region-name a1
   [LSW2-mst-region]instance 1 vlan 2 to 10
   [LSW2-mst-region]instance 2 vlan 11 to 20
   [LSW2-mst-region]active region-configuration
   [LSW3]stp region-configuration
   [LSW3-mst-region]region-name a1
   [LSW3-mst-region]instance 1 vlan 2 to 10
   [LSW3-mst-region]instance 2 vlan 11 to 20
   [LSW3-mst-region]active region-configuration
   [LSW4]stp region-configuration
   [LSW4-mst-region]region-name a1
   [LSW4-mst-region]instance 1 vlan 2 to 10
   [LSW4-mst-region]instance 2 vlan 11 to 20
   [LSW4-mst-region]active region-configuration
   （2）在域内配置实例的根桥与备份根桥
   [LSW1]stp instance 1 root primary
   [LSW1]stp instance 2 root secondary
   [LSW2]stp instance 1 root secondary
   [LSW2]stp instance 2 root primary
   （3）配置实例中将要被阻塞端口的路径开销值大于缺省值（华为计算方法）
   [LSW3]stp pathcost-standard legacy
   [LSW3-GigabitEthernet0/0/4]stp instance 2 cost 20000
   [LSW4]stp pathcost-standard legacy
   [LSW4-GigabitEthernet0/0/3]stp instance 1 cost 20000
   （4）使能MSTP，实现破除环路
   [LSW1]stp enable
   [LSW2]stp enable
   [LSW3]stp enable
   [LSW4]stp enable
   （5）将与PC相连的端口设置为边缘端口
   [LSW3-GigabitEthernet0/0/2]stp edged-port enable
   [LSW3]stp bpdu-protection //配置BPDU保护功能
   [LSW4-GigabitEthernet0/0/1]stp edged-port enable
   [LSW4]stp bpdu-protection
2. 配置根保护功能
   [LSW1-GigabitEthernet0/0/3]stp root-protection
   [LSW2-GigabitEthernet0/0/4]stp root-protection
3. 配置处于环网中的设备的二层转发功能
   [LSW1-GigabitEthernet0/0/3]port link-type trunk
   [LSW1-GigabitEthernet0/0/3]port trunk allow-pass vlan 2 to 20
   [LSW1]int Eth-Trunk 1 //配置Eth-Trunk接口
   [LSW1-Eth-Trunk1]trunkport g0/0/2
   [LSW1-Eth-Trunk1]trunkport g0/0/4
   [LSW1-Eth-Trunk1]port link-type trunk
   [LSW1-Eth-Trunk1]port trunk allow-pass vlan 2 to 20
   [LSW2-GigabitEthernet0/0/4]port link-type trunk
   [LSW2-GigabitEthernet0/0/4]port trunk allow-pass vlan 2 to 20
   [LSW2]int Eth-Trunk 1
   [LSW2-Eth-Trunk1]trunkport g0/0/1
   [LSW2-Eth-Trunk1]trunkport g0/0/3
   [LSW2-Eth-Trunk1]port link-type trunk
   [LSW2-Eth-Trunk1]port trunk allow-pass vlan 2 to 20
   [LSW3]vlan batch 2 to 20
   [LSW3-GigabitEthernet0/0/2]port link-type access
   [LSW3-GigabitEthernet0/0/2]port default vlan 2
   [LSW3-GigabitEthernet0/0/1]port link-type trunk
   [LSW3-GigabitEthernet0/0/1]port trunk allow-pass vlan 2 to 20
   [LSW3-GigabitEthernet0/0/4]port link-type trunk
   [LSW3-GigabitEthernet0/0/4]port trunk allow-pass vlan 2 to 20
   [LSW4]vlan batch 2 to 20
   [LSW4-GigabitEthernet0/0/1]port link-type access
   [LSW4-GigabitEthernet0/0/1]port default vlan 11
   [LSW4-GigabitEthernet0/0/3]port link-type trunk
   [LSW4-GigabitEthernet0/0/3]port trunk allow-pass vlan 2 to 20
   [LSW4-GigabitEthernet0/0/2]port link-type trunk
   [LSW4-GigabitEthernet0/0/2]port trunk allow-pass vlan 2 to 20
4. 验证配置