基于eNSP的华为设备，配置hybrid接口以及MSTP多重生成树，实现负载均衡。

某公司内部网络由四个vlan构成，分别为vlan10 vlan20 vlan30 及服务器 vlan100 公司核心交换机是一台华为交换机 。公司要求每个vlan的员工都能够访问到服务器，但各部门之间都不能相互访问。
如图所示：

1. 配置mst区域
   [sw1]stp mode mstp
   [sw1]stp region-configuration
   [sw1-mst-region]region-name HUAWEI
   [sw1-mst-region]revision-level 1
   .
   [sw2]stp mode mstp
   [sw2]stp region-configuration
   [sw2-mst-region]region-name HUAWEI
   [sw2-mst-region]revision-level 1
   .
   [sw3]stp mode mstp
   [sw3]stp region-configuration
   [sw3-mst-region]region-name HUAWEI
   [sw3-mst-region]revision-level 1

2. hybird接口的配置（实现全网互通的关键,因为本文使用的是G接口。)
   [sw1]interface GigabitEthernet 0/0/3
   [sw1-GigabitEthernet0/0/3]port hybrid pvid vlan 10
   [sw1-GigabitEthernet0/0/3]port hybrid untagged vlan 10
   .
   [sw2]interface GigabitEthernet 0/0/3
   [sw2-GigabitEthernet0/0/3]port hybrid pvid vlan 30
   [sw2-GigabitEthernet0/0/3]port hybrid untagged vlan 30
   .
   hybird接口的工作原理

3. 配置实例1及主根和辅根，实现负载均衡。
   [sw1-mst-region]revision-level 1
   [sw1-mst-region]instance 1 vlan 10 20 40
   [sw1-mst-region]instance 2 vlan 30
   [sw1-mst-region]active region-configuration
   [sw1]stp instance 1 root primary
   [sw1]stp instance 2 root secondary
   .
   [sw2-mst-region]revision-level 1
   [sw2-mst-region]instance 1 vlan 10 20 40
   [sw2-mst-region]instance 2 vlan 30
   [sw2-mst-region]active region-configuration
   [sw2]stp instance 1 root secondary
   [sw3]stp instance 2 root primary
   .
   [sw3-mst-region]revision-level 1
   [sw3-mst-region]instance 1 vlan 10 20 40
   [sw3-mst-region]instance 2 vlan 30
   [sw3-mst-region]active region-configuration

4. 配置trunk链路并加vlan
   [sw1]interface g 0/0/1
   [sw1-GigabitEthernet0/0/1]port link-type trunk
   [sw1-GigabitEthernet0/0/1]port trunk allow-pass vlan all
   [sw1]interface g 0/0/2
   [sw1-GigabitEthernet0/0/2]port link-type trunk
   [sw1-GigabitEthernet0/0/2]port trunk allow-pass vlan all
   .
   [sw2]interface g 0/0/1
   [sw2-GigabitEthernet0/0/1]port link-type trunk
   [sw2-GigabitEthernet0/0/1]port trunk allow-pass vlan all
   [sw2]interface g 0/0/2
   [sw2-GigabitEthernet0/0/2]port link-type trunk
   [sw2-GigabitEthernet0/0/2]port trunk allow-pass vlan all

5. 将vlan10，30 分别加入到对应的接口中。
   [sw3]interface e 0/0/1
   [sw3-Ethernet0/0/1]port link-type trunk
   [sw3-Ethernet0/0/1]port trunk allow-pass vlan all
   [sw3]interface e 0/0/2
   [sw3-Ethernet0/0/2]port link-type trunk
   [sw3-Ethernet0/0/2]port trunk allow-pass vlan all
   [sw3]interface e 0/0/3
   [sw3-Ethernet0/0/3]port link-type access
   [sw3-Ethernet0/0/3]port default vlan 10
   [sw3]interface e 0/0/4
   [sw3-Ethernet0/0/4]port link-type access
   [sw3-Ethernet0/0/4]port default vlan 30

6. 通过抓包验证
   .抓取LSW4上的G0/0/2或G0/0/3口，分别用pc1和pc2判断流量是否走方向
   . pc1 ping 路由器(彩色部分证明捉去成功，vlan10流量走的左边)
   
   . pc2 ping 路由器(灰色部分证明捉去未成功，vlan30流量走的右边)