一、基础配置

1.新建拓扑图

2.配置vlan

a.CORE-S1

<Huawei>system-view

[Huawei]sysname CORE-S1

[CORE-S1]vlan 10

[CORE-S1-vlan10]vlan 20

[CORE-S1-vlan20]vlan 30

b.CORE-S2

<Huawei>system-view

[Huawei]sysname CORE-S2

[CORE-S2]vlan 10

[CORE-S2-vlan10]vlan 20

[CORE-S2-vlan20]vlan 30

c.S1

<Huawei>system-view

[Huawei]sysname S1

[S1]vlan 10

d.S2

<Huawei>system-view

[Huawei]sysname S2

[S2]vlan 20

e.S3

<Huawei>system-view

[Huawei]sysname S3

[S3]vlan 30

二、链路聚合配置

1.CORE-S1

[CORE-S1]interface Eth-Trunk 1

[CORE-S1-Eth-Trunk1]quit

[CORE-S1]interface GigabitEthernet 0/0/1

[CORE-S1-GigabitEthernet0/0/1]eth-trunk 1

[CORE-S1-GigabitEthernet0/0/1]quit

[CORE-S1]interface GigabitEthernet 0/0/2

[CORE-S1-GigabitEthernet0/0/2]eth-trunk 1

2.CORE-S2

[CORE-S2]interface Eth-Trunk 1

[CORE-S2-Eth-Trunk1]quit

[CORE-S2]interface GigabitEthernet 0/0/1

[CORE-S2-GigabitEthernet0/0/1]eth-trunk 1

[CORE-S2-GigabitEthernet0/0/1]quit

[CORE-S2]interface GigabitEthernet 0/0/2

[CORE-S2-GigabitEthernet0/0/2]eth-trunk 1

三、接口配置

1.CORE-S1

[CORE-S1]port-group group-member g0/0/3 to g0/0/5

[CORE-S1-port-group]port link-type trunk

[CORE-S1-port-group]port trunk allow-pass vlan all

[CORE-S1-port-group]quit

[CORE-S1]interface Eth-Trunk 1

[CORE-S1-Eth-Trunk1]port link-type trunk

[CORE-S1-Eth-Trunk1]port trunk allow-pass vlan all

2.CORE-S2

[CORE-S2]port-group group-member g0/0/3 to g0/0/5

[CORE-S2-port-group]port link-type trunk

[CORE-S2-port-group]port trunk allow-pass vlan all

[CORE-S2-port-group]quit

[CORE-S2]interface Eth-Trunk 1

[CORE-S2-Eth-Trunk1]port link-type trunk

[CORE-S2-Eth-Trunk1]port trunk allow-pass vlan all

3.S1

[S1]interface GigabitEthernet 0/0/1

[S1-GigabitEthernet0/0/1]port link-type trunk

[S1-GigabitEthernet0/0/1]port trunk allow-pass vlan all

[S1-GigabitEthernet0/0/1]quit

[S1]interface GigabitEthernet 0/0/2

[S1-GigabitEthernet0/0/2]port link-type trunk

[S1-GigabitEthernet0/0/2]port trunk allow-pass vlan all

[S1-GigabitEthernet0/0/2]quit

[S1]interface GigabitEthernet 0/0/3

[S1-GigabitEthernet0/0/3]port link-type access

[S1-GigabitEthernet0/0/3]port default vlan 10

4.S2

[S2]interface GigabitEthernet 0/0/1

[S2-GigabitEthernet0/0/1]port link-type trunk

[S2-GigabitEthernet0/0/1]port trunk allow-pass vlan all

[S2-GigabitEthernet0/0/1]quit

[S2]interface GigabitEthernet 0/0/2

[S2-GigabitEthernet0/0/2]port link-type trunk

[S2-GigabitEthernet0/0/2]port trunk allow-pass vlan all

[S2-GigabitEthernet0/0/2]quit

[S2]interface GigabitEthernet 0/0/3

[S2-GigabitEthernet0/0/3]port link-type access

[S2-GigabitEthernet0/0/3]port default vlan 20

5.S3

[S3]interface GigabitEthernet 0/0/1

[S3-GigabitEthernet0/0/1]port link-type trunk

[S3-GigabitEthernet0/0/1]port trunk allow-pass vlan all

[S3-GigabitEthernet0/0/1]quit

[S3]interface GigabitEthernet 0/0/2

[S3-GigabitEthernet0/0/2]port link-type trunk

[S3-GigabitEthernet0/0/2]port trunk allow-pass vlan all

[S3-GigabitEthernet0/0/2]quit

[S3]interface GigabitEthernet 0/0/3

[S3-GigabitEthernet0/0/3]port link-type access

[S3-GigabitEthernet0/0/3]port default vlan 30

四、基本IP配置

1.CORE-S1

[CORE-S1]interface Vlanif 10

[CORE-S1-Vlanif10]ip address 192.168.10.254 24

[CORE-S1-Vlanif10]quit

[CORE-S1]interface Vlanif 20

[CORE-S1-Vlanif20]ip address 192.168.20.254 24

[CORE-S1-Vlanif20]quit

[CORE-S1]interface Vlanif 30

[CORE-S1-Vlanif30]ip address 192.168.30.254 24

2.CORE-S2

[CORE-S2]interface Vlanif 10

[CORE-S2-Vlanif10]ip address 192.168.10.253 24

[CORE-S2-Vlanif10]quit

[CORE-S2]interface Vlanif 20

[CORE-S2-Vlanif20]ip address 192.168.20.253 24

[CORE-S2-Vlanif20]quit

[CORE-S2]interface Vlanif 30

[CORE-S2-Vlanif30]ip address 192.168.30.253 24

3.PC端

a.PC1

b.PC2

c.PC3

五、VRRP主备配置

1.VRRP虚拟IP

a.CORE-S1

[CORE-S1]interface Vlanif 10

[CORE-S1-Vlanif10]vrrp vrid 10 virtual-ip 192.168.10.252 //VLAN 接口 10 配置 VRRP虚拟 IP 地址为 192.168.10.252.

[CORE-S1-Vlanif10]quit

[CORE-S1]interface Vlanif 20

[CORE-S1-Vlanif20]vrrp vrid 20 virtual-ip 192.168.20.252

[CORE-S1-Vlanif20]quit

[CORE-S1]interface Vlanif 30

[CORE-S1-Vlanif30]vrrp vrid 30 virtual-ip 192.168.30.252

b.CORE-S2

[CORE-S2]interface Vlanif 10

[CORE-S2-Vlanif10]vrrp vrid 10 virtual-ip 192.168.10.252 //相同vlan的虚拟IP地址相同，配置后PC端将只能通过ping虚拟网关。

[CORE-S2-Vlanif10]quit

[CORE-S2]interface Vlanif 20

[CORE-S2-Vlanif20]vrrp vrid 20 virtual-ip 192.168.20.252

[CORE-S2-Vlanif20]quit

[CORE-S2]interface Vlanif 30

[CORE-S2-Vlanif30]vrrp vrid 30 virtual-ip 192.168.30.252

3.ping通测试

以PC1为例：

PC端可以ping通虚拟IP网关。

2.VRRP优先级

设置CORE-S1为vlan10和vlan20的主设备，CORE-S2为vlan30的主设备。

a.CORE-S1

[CORE-S1]interface Vlanif 10

[CORE-S1-Vlanif10]vrrp vrid 10 priority 110 //VRRP的默认优先级是100，数字越大优先级越高。

[CORE-S1-Vlanif10]quit

[CORE-S1]interface Vlanif 20

[CORE-S1-Vlanif20]vrrp vrid 20 priority 110

b.CORE-S2

[CORE-S2]interface Vlanif 30

[CORE-S2-Vlanif30]vrrp vrid 30 priority 110

六、VRRP负载均衡配置

负载均衡的目的是让信息传递的路线达到以下效果：

1.生成树协议

a.STP生成树协议

[CORE-S1]display stp brief

此时的链路聚合组并没有启动，我们需要通过调整生成树的优先级将其启动。

[CORE-S1]stp priority 0 //优先级数字越小越优先

[CORE-S1]display stp brief

此时CORE-S2也随主设备的配置进行了改变，所以不用在CORE-S2上配置这条命令。

b.MSTP生成树协议

以CORE-S1为例：

[CORE-S1]stp region-configuration //进入 MST（多重生成树）配置模式，可以在此模式下定义区域的属性。

[CORE-S1-mst-region] region-name 1 //将 MST 区域的名称设置为“1”。

[CORE-S1-mst-region] revision-level 1 //将 MST 区域的修订级别设置为“1”。

[CORE-S1-mst-region] instance 1 vlan 10 20 //将 VLAN 10 和 VLAN 20 分配给 MST 实例 1。

[CORE-S1-mst-region] instance 2 vlan 30 40 //将 VLAN 30 和 VLAN 40 分配给 MST 实例 2。

[CORE-S1-mst-region] active region-configuration //激活当前的 MST 区域配置。

所有的交换机都需要配置以上命令。

所以交换机配置完成后，在CORE-S1上继续配置：

[CORE-S1]stp instance 1 priority 0

[CORE-S1]stp instance 2 priority 4096

CORE-S2上继续配置：

[CORE-S2]stp instance 1 priority 4096

[CORE-S2]stp instance 2 priority 0

配置完成后可以在S1,S2,S3上进行查看是否完成所需配置：

S1

S2

S3

七、VRRP的作用

1. 冗余备份

        通过 VRRP，可以在网络中配置多个路由器作为冗余备份。如果主路由器（Master）发生故障，备份路由器（Backup）可以迅速接管其工作，保证网络通信不受影响。

2. 无缝切换

        当主路由器故障时，VRRP 会自动将虚拟 IP 地址切换到备份路由器，客户端设备无感知地继续通信，不需要重新配置网关。

3. 负载均衡

        在一些配置中，VRRP 也可以用来实现负载均衡，通过将流量分配到多个路由器上，优化网络性能。

4. 简单配置

        VRRP 使得网络设备的配置更加简单，网络管理员只需设置虚拟路由器 ID 和虚拟 IP 地址，设备即可自动处理主备切换。