华为网络实验（4）——MSTP

MSTP：一个VLAN一颗生成树，实现链路的负载均衡。

MSTP的命令：

stp mode mstp
stp region-configuration
region-name huawei
revision-level 1
instance 1 vlan 10
instance 2 vlan 20
active region-configuration
stp instance 1 root primary
stp instance 2 root secondary（根据具体情况而定）

拓扑图：

SW1配置文件：

#
sysname sw1
#
vlan batch 10 20

#
interface Ethernet0/0/1
 port hybrid pvid vlan 10
 port hybrid untagged vlan 10 20
#
interface GigabitEthernet0/0/2
 port link-type trunk
 port trunk allow-pass vlan 10 20
#
interface GigabitEthernet0/0/1
 port hybrid pvid vlan 10
 port hybrid untagged vlan 10 20

SW2配置文件：

#
sysname sw2
#
vlan batch 10 20

#
interface Ethernet0/0/1
 port hybrid pvid vlan 20
 port hybrid untagged vlan 10 20
#
interface GigabitEthernet0/0/2
 port link-type trunk
 port trunk allow-pass vlan 10 20
#
interface GigabitEthernet0/0/1
 port hybrid pvid vlan 20
 port hybrid untagged vlan 10 20

SW3配置文件：

#
sysname sw3
#
vlan batch 10 20

interface Ethernet0/0/1
 port hybrid pvid vlan 10
 port hybrid untagged vlan 10 20
#
interface Ethernet0/0/2
 port hybrid pvid vlan 20
 port hybrid untagged vlan 10 20
#
interface GigabitEthernet0/0/1
 port hybrid pvid vlan 10
 port hybrid untagged vlan 10 20

#

interface GigabitEthernet0/0/2
port hybrid pvid vlan 20
 port hybrid untagged vlan 10 20

输入display stp brief查看各端口的状态

SW1

SW2

SW3

根据上图可知，SW3的g0/0/1口为AP口，处于blocking状态。

配置MSTP

SW1

stp mode mstp
stp region-configuration
region-name huawei
revision-level 1
instance 1 vlan 10
instance 2 vlan 20
active region-configuration
stp instance 1 root primary
stp instance 2 root secondary
 

SW2

stp mode mstp
stp region-configuration
region-name huawei
revision-level 1
instance 1 vlan 10
instance 2 vlan 20
active region-configuration
stp instance 2 root primary
stp instance 1 root secondary

SW3

stp mode mstp
stp region-configuration
region-name huawei
revision-level 1
instance 1 vlan 10
instance 2 vlan 20
active region-configuration

配置完之后查看端口状态：

SW1：

SW2：

SW3：

可以看到，SW3的AP口自动进行了转换，不会影响数据的传输。