【实验】MSTP的配置

 

 

[sw3]stp region-configuration //域名

[sw3-mst-region]revision-level 3 //修订版本

[sw3-mst-region]instance 1 vlan 8 to 9

[sw3-mst-region]instance 2 vlan 10 to 11 //将实例和vlan映射（绑定）

[sw3-mst-region]active region-configuration //切记激活mst区域配合 否则不生效 激活配置后 dis this 可见

 

 

三台交换机都要配置

为了保证配置统一性 建议复制黏贴

【sw1】

stp instance 1 priority 0

stp instance 2 priority 4096

 

【sw2】

stp instance 1 priority 4096

stp instance 2 priority 0

 

通过以上修改优先级 实现汇聚两台交换机的实例根互为主备

 

 【验证】

[sw3]dis stp instance 1 bri          //查看实例1的生成树信息
 MSTID  Port                        Role  STP State     Protection
   1    GigabitEthernet0/0/1        DESI  FORWARDING      NONE
   1    GigabitEthernet0/0/2        ROOT  FORWARDING      NONE
   1    GigabitEthernet0/0/3        DESI  FORWARDING      NONE
   1    GigabitEthernet0/0/4        DESI  FORWARDING      NONE
[sw3]dis stp instance 2 bri
 MSTID  Port                        Role  STP State     Protection
   2    GigabitEthernet0/0/1        ROOT  FORWARDING      NONE
   2    GigabitEthernet0/0/2        DESI  FORWARDING      NONE
   2    GigabitEthernet0/0/5        DESI  LEARNING        NONE
   2    GigabitEthernet0/0/6        DESI  FORWARDING      NONE
[sw3]dis stp instance 3 bri
Info: No instance information is available.
[sw3]dis stp instance 0 bri
 MSTID  Port                        Role  STP State     Protection
   0    GigabitEthernet0/0/1        ALTE  DISCARDING      NONE
   0    GigabitEthernet0/0/2        ROOT  FORWARDING      NONE
   0    GigabitEthernet0/0/3        DESI  FORWARDING      NONE
   0    GigabitEthernet0/0/4        DESI  FORWARDING      NONE
   0    GigabitEthernet0/0/5        DESI  FORWARDING      NONE
   0    GigabitEthernet0/0/6        DESI  FORWARDING      NONE