1、一、搭建本次实验的拓扑结构
四台交换机，连接成环形结构
2、二、配置所有交换机的VLAN
[S1]vlan batch 3 to 8 [S2]vlan batch 3 to 8 [S3]vlan batch 3 to 8 [S4]vlan batch 3 to 8
3、三、配置本次实验的链路接口信息
[SW1-GigabitEthernet0/0/1]dis th#interface GigabitEthernet0/0/1 port link-type trunk port trunk allow-pass vlan 2 to 4094#
[SW1-GigabitEthernet0/0/1]int e0/0/13[SW1-Ethernet0/0/13]dis thinterface Ethernet0/0/13 port link-type trunk port trunk allow-pass vlan 2 to 4094#
[SW3-GigabitEthernet0/0/10]port link-type trunk [SW3-GigabitEthernet0/0/10]port trunk allow-pass vlan all [SW3-GigabitEthernet0/0/10]bpdu enable
[SW4-GigabitEthernet0/0/10]port link-type trunk [SW4-GigabitEthernet0/0/10]port trunk allow-pass vlan all [SW4-GigabitEthernet0/0/10]bpdu enable
4、四、配置基本区域和两个实例
配置交换机属于同一个区域RG1，实例1与VLAN3、4、5建立映射关系，实例2与VLAN6、7、8建立映射关系，激活域配置
SW3：
stp region-configuration region-name RG1 revision-level 1 instance 1 vlan 3 to 5 instance 2 vlan 6 to 8 active region-configuration
[SW4-mst-region]dis th#stp region-configuration region-name 1 revision-level 1 instance 1 vlan 3 to 5 instance 2 vlan 6 to 8 active region-configuration#
[SW1-mst-region]dis th#stp region-configuration region-name RG1 revision-level 1 instance 1 vlan 3 to 5 instance 2 vlan 6 to 8 active region-configuration
[SW2-mst-region]dis th #stp region-configuration region-name RG1 revision-level 1 instance 1 vlan 3 to 5 instance 2 vlan 6 to 8 active region-configuration#
5、五、配置上述的条件后查看当前所有交换机的MSTP信息
[SW2]dis stp bri MSTID Port Role STP State Protection 0 Ethernet0/0/13 ALTE DISCARDING NONE 0 GigabitEthernet0/0/1 ROOT FORWARDING NONE 1 Ethernet0/0/13 ROOT FORWARDING NONE 1 GigabitEthernet0/0/1 DESI FORWARDING NONE 2 Ethernet0/0/13 ROOT FORWARDING NONE 2 GigabitEthernet0/0/1 DESI FORWARDING NONE
[SW1]dis stp bri MSTID Port Role STP State Protection 0 Ethernet0/0/13 ALTE DISCARDING NONE 0 GigabitEthernet0/0/1 DESI FORWARDING NONE 0 GigabitEthernet0/0/2 ROOT FORWARDING NONE 1 Ethernet0/0/13 ROOT FORWARDING NONE 1 GigabitEthernet0/0/1 ALTE DISCARDING NONE 2 Ethernet0/0/13 ROOT FORWARDING NONE 2 GigabitEthernet0/0/1 ALTE DISCARDING NONE
6、六、配置实例的优先级
[SW4]stp instance 2 priority 0 [SW3]stp instance 2 priority 4096 [SW2]stp instance 2 priority 8192
7、七、配置完实例的优先级后再查看MSTP信息
[SW4]dis stp bri MSTID Port Role STP State Protection 0 GigabitEthernet0/0/2 DESI FORWARDING NONE 0 GigabitEthernet0/0/9 DESI FORWARDING NONE 0 GigabitEthernet0/0/10 DESI FORWARDING NONE 0 GigabitEthernet0/0/13 DESI FORWARDING NONE 1 GigabitEthernet0/0/10 DESI FORWARDING NONE 1 GigabitEthernet0/0/13 DESI FORWARDING NONE 2 GigabitEthernet0/0/10 DESI FORWARDING NONE 2 GigabitEthernet0/0/13 DESI FORWARDING NONE
