网络拓扑图如下：
接入层交换机划分vlan、与核心交换机相连的接口打trunk
SW3：
<Huawei>system-view [Huawei]undo info-center enable [Huawei]sysname SW3 [SW3]vlan 10 [SW3-vlan10]quit
[SW3]port-group group-member Ethernet 0/0/2 to Ethernet 0/0/3 #端口组操作 [SW3-port-group]port link-type access [SW3-port-group]port default vlan 10 [SW3-port-group]quit [SW3]interface Ethernet0/0/1 [SW3-Ethernet0/0/1]port link-type trunk [SW3-Ethernet0/0/1]port trunk allow-pass vlan 10
SW4：
<Huawei>system-view [Huawei]undo info-center enable [Huawei]sysname SW4 [SW4]vlan 20 [SW4-vlan20]quit
[SW4]interface Ethernet0/0/2 [SW4-Ethernet0/0/2]port link-type access [SW4-Ethernet0/0/2]port default vlan 20 [SW4-Ethernet0/0/2]quit [SW4]interface Ethernet0/0/1 [SW4-Ethernet0/0/1]port link-type trunk [SW4-Ethernet0/0/1]port trunk allow-pass vlan 20
SW5：
<Huawei>system-view [Huawei]undo info-center enable [Huawei]sysname SW5 [SW5]vlan 30 [SW5-vlan30]quit
[SW5]port-group group-member Ethernet 0/0/2 to Ethernet 0/0/3 [SW5-port-group]port link-type access [SW5-port-group]port default vlan 30 [SW5-port-group]quit
[SW5]interface Ethernet0/0/1 [SW5-Ethernet0/0/1]port link-type trunk [SW5-Ethernet0/0/1]port trunk allow-pass vlan 30
SW6：
<Huawei>system-view [Huawei]undo info-center enable [Huawei]sysname SW6 [SW6]vlan 80 [SW6-vlan80]quit
[SW6]interface Ethernet0/0/2 [SW6-Ethernet0/0/2]port link-type access [SW6-Ethernet0/0/2]port default vlan 80 [SW6-Ethernet0/0/2]quit [SW6]interface Ethernet0/0/1 [SW6-Ethernet0/0/1]port link-type trunk [SW6-Ethernet0/0/1]port trunk allow-pass vlan all
SW7：
<Huawei>system-view [Huawei]undo info-center enable [Huawei]sysname SW7 [SW7]vlan 90 [SW7-vlan90]quit [SW7]interface Ethernet0/0/2 [SW7-Ethernet0/0/2]port link-type access [SW7-Ethernet0/0/2]port default vlan 90 [SW7-Ethernet0/0/2]quit [SW7]interface Ethernet0/0/1 [SW7-Ethernet0/0/1]port link-type trunk [SW7-Ethernet0/0/1]port trunk allow-pass vlan all
核心交换机配置：
SW1：
<Huawei>system-view [Huawei]undo info-center enable [Huawei]sysname SW1 [SW1]vlan batch 10 20 30 80 90 [SW1]port-group group-member GigabitEthernet 0/0/1 to GigabitEthernet 0/0/5 [SW1-port-group]port link-type trunk [SW1-port-group]quit
SW2：
<Huawei>system-view [Huawei]undo info-center enable [Huawei]sysname SW2 [SW2]vlan batch 80 90 [SW2]port-group group-member GigabitEthernet 0/0/1 to GigabitEthernet 0/0/3 [SW2-port-group]port link-type trunk [SW2-port-group]port trunk allow-pass vlan all
DHCP服务器配置
AR1：
<Huawei>system-view [Huawei]undo info-center enable [Huawei]sysname AR1 [AR1]dhcp enable VLAN 10配置DHCP： [AR1]interface GigabitEthernet 0/0/0.10 #创建子接口 [AR1-GigabitEthernet0/0/0.10]ip address 10.10.10.1 24 #配置IP地址 [AR1-GigabitEthernet0/0/0.10]dot1q termination vid 10 #绑定vlan10 [AR1-GigabitEthernet0/0/0.10]arp broadcast enable #开启arp广播 [AR1-GigabitEthernet0/0/0.10]dhcp select global #全局分配地址 [AR1-GigabitEthernet0/0/0.10]quit #退出 [AR1]ip pool vlan10 #创建地址池vlan10 [AR1-ip-pool-vlan10]network 10.10.10.0 mask 24 #设定网段 [AR1-ip-pool-vlan10]gateway-list 10.10.10.1 #配置网关地址 [AR1-ip-pool-vlan10]dns-list 10.10.10.1 #配置dns地址 [AR1-ip-pool-vlan10]quit VLAN 20配置DHCP： [AR1]interface GigabitEthernet 0/0/0.20 [AR1-GigabitEthernet0/0/0.20]ip address 20.20.20.1 24 [AR1-GigabitEthernet0/0/0.20]dot1q termination vid 20 [AR1-GigabitEthernet0/0/0.20]arp broadcast enable [AR1-GigabitEthernet0/0/0.20]dhcp select global [AR1-GigabitEthernet0/0/0.20]quit [AR1]ip pool vlan20 [AR1-ip-pool-vlan20]network 20.20.20.0 mask 24 [AR1-ip-pool-vlan20]gateway-list 20.20.20.1 [AR1-ip-pool-vlan20]dns-list 20.20.20.1 [AR1-ip-pool-vlan20]quit VLAN 30配置DHCP： [AR1]interface GigabitEthernet 0/0/0.30 [AR1-GigabitEthernet0/0/0.30]ip address 30.30.30.1 24 [AR1-GigabitEthernet0/0/0.30]dot1q termination vid 30 [AR1-GigabitEthernet0/0/0.30]arp broadcast enable [AR1-GigabitEthernet0/0/0.30]dhcp select global [AR1-GigabitEthernet0/0/0.30]quit [AR1]ip pool vlan30 [AR1-ip-pool-vlan30]network 30.30.30.0 mask 24 [AR1-ip-pool-vlan30]gateway-list 30.30.30.1 [AR1-ip-pool-vlan30]dns-list 30.30.30.1 VLAN 80配置DHCP： [AR1]interface GigabitEthernet 0/0/0.80 [AR1-GigabitEthernet0/0/0.80]ip address 80.80.80.1 24 [AR1-GigabitEthernet0/0/0.80]dot1q termination vid 80 [AR1-GigabitEthernet0/0/0.80]arp broadcast enable [AR1-GigabitEthernet0/0/0.80]dhcp select global [AR1-GigabitEthernet0/0/0.80]quit [AR1]ip pool vlan80 [AR1-ip-pool-vlan80]network 80.80.80.0 mask 24 [AR1-ip-pool-vlan80]gateway-list 80.80.80.1 [AR1-ip-pool-vlan80]dns-list 80.80.80.1 VLAN 90配置DHCP： [AR1]interface GigabitEthernet 0/0/0.90 [AR1-GigabitEthernet0/0/0.90]ip address 90.90.90.1 24 [AR1-GigabitEthernet0/0/0.90]dot1q termination vid 90 [AR1-GigabitEthernet0/0/0.90]arp broadcast enable [AR1-GigabitEthernet0/0/0.90]dhcp select global [AR1-GigabitEthernet0/0/0.90]quit [AR1]ip pool vlan90 [AR1-ip-pool-vlan90]network 90.90.90.0 mask 24 [AR1-ip-pool-vlan90]gateway-list 90.90.90.1 [AR1-ip-pool-vlan90]dns-list 90.90.90.1
配置完成后，我们在PC上改为自动获取IP，然后再去ping不同vlan的电脑IP
