實驗十九MSTP

1、每一個交換機都創建vlan2-20,vlan2-10走sw3-sw1,vlan11-20走sw3-sw2
2、將每一個線路的接口都設置爲trunk,並且允許所有的vlan通過
3、配置MSTP
Sw1的配置：

#
sysname Huawei
#
vlan batch 2 to 20
#
stp mode stp
stp instance 0 root primary
stp instance 1 root primary
stp instance 2 root secondary
#
stp region-configuration
 region-name HCIP
 instance 1 vlan 2 to 10
 instance 2 vlan 11 to 20
 active region-configuration
#
interface GigabitEthernet0/0/1
 port link-type trunk
 port trunk allow-pass vlan 2 to 4094
#
interface GigabitEthernet0/0/2
 port link-type trunk
 port trunk allow-pass vlan 2 to 4094
#

查看SW2的生成樹

<Huawei>dis stp br
 MSTID  Port                        Role  STP State     Protection
   0    GigabitEthernet0/0/1        ROOT  FORWARDING      NONE
   0    GigabitEthernet0/0/2        DESI  FORWARDING      NONE
   1    GigabitEthernet0/0/1        MAST  FORWARDING      NONE
   1    GigabitEthernet0/0/2        ROOT  FORWARDING      NONE
   2    GigabitEthernet0/0/1        MAST  FORWARDING      NONE
   2    GigabitEthernet0/0/2        ROOT  FORWARDING      NONE

查看SW3的生成樹

<Huawei>dis stp brief 
 MSTID  Port                        Role  STP State     Protection
   0    GigabitEthernet0/0/1        ALTE  DISCARDING       NONE
   0    GigabitEthernet0/0/2        ROOT  FORWARDING      NONE
   1    GigabitEthernet0/0/1        ALTE  DISCARDING        NONE
   1    GigabitEthernet0/0/2        DESI  FORWARDING      NONE
   2    GigabitEthernet0/0/1        ALTE  DISCARDING       NONE
   2    GigabitEthernet0/0/2        DESI  FORWARDING