项目场景：
通过对如图拓扑的网络进行相应需求的配置，全网可通。
需求分析：
按照要求划分VLAN，全网可达，电脑IP使用DHCP获取。
如图拓扑原本共两个网段，左边的区域和右边的区域。
需要把PC1和PC3划分到VLAN 2 --- 192.168.1.0/24
需要把PC2和PC4划分到VLAN 3 --- 192.168.2.0/24
需要把PC5划分到VLAN 2 --- 192.168.3.0/24
需要把PC6划分到VLAN 3 --- 192.168.4.0/24
实验步骤：
1.设备改名：
[Huawei]sys SW1/SW2/SW3/R1
2. 配置SW2：
① 创建VLAN：
[SW2]vlan 2
[SW2-vlan2]
[SW2]vlan 3
[SW2-vlan3]
②将接口划入VLAN
[SW2]interface GigabitEthernet 0/0/2
[SW2-GigabitEthernet0/0/2]port link-type access
[SW2-GigabitEthernet0/0/2]port default vlan 2
[SW2]interface GigabitEthernet 0/0/3
[SW2-GigabitEthernet0/0/3]port link-type access
[SW2-GigabitEthernet0/0/3]port default vlan 3
③配置trunk干道
[SW2]interface GigabitEthernet 0/0/1
[SW2-GigabitEthernet0/0/1]port link-type trunk
[SW2-GigabitEthernet0/0/1]port trunk allow-pass vlan all
3. 配置SW1
① 创建VLAN：
[SW1]vlan 2
[SW1-vlan2]
[SW1]vlan 3
[SW1-vlan3]
②将接口划入VLAN：
[SW1]interface GigabitEthernet 0/0/3
[SW1-GigabitEthernet0/0/3]port link-type access
[SW1-GigabitEthernet0/0/3]port default vlan 2
[SW1]interface GigabitEthernet 0/0/4
[SW1-GigabitEthernet0/0/4]port link-type access
[SW1-GigabitEthernet0/0/4]port default vlan 3
③配置trunk干道：
[SW1]interface GigabitEthernet 0/0/2
[SW1-GigabitEthernet0/0/2]port link-type trunk
[SW1-GigabitEthernet0/0/2]port trunk allow-pass vlan all
[SW1]interface GigabitEthernet 0/0/1
[SW1-GigabitEthernet0/0/1]port link-type trunk
[SW1-GigabitEthernet0/0/1]port trunk allow-pass vlan all
4. 配置SW3
① 创建VLAN：
[SW3]vlan 2
[SW3-vlan2]
[SW3]vlan 3
[SW3-vlan3]
②将接口划入VLAN：
[SW3]interface GigabitEthernet 0/0/2
[SW3-GigabitEthernet0/0/2]port link-type access
[SW3-GigabitEthernet0/0/2]port default vlan 2
[SW3]interface GigabitEthernet 0/0/3
[SW3-GigabitEthernet0/0/3]port link-type access
[SW3-GigabitEthernet0/0/3]port default vlan 3
③配置trunk干道：
[SW3]interface GigabitEthernet 0/0/1
[SW3-GigabitEthernet0/0/1]port link-type trunk
[SW3-GigabitEthernet0/0/1]port trunk allow-pass vlan all
5. 配置路由器R1：VLAN间路由
左边VLAN2：
[R1]interface GigabitEthernet 0/0/0.1
[R1-GigabitEthernet0/0/0.1]ip address 192.168.1.1 24
[R1-GigabitEthernet0/0/0.1]dot1q termination vid 2 --- 告诉路由器的这个子接口管理
[R1-GigabitEthernet0/0/0.1]arp broadcast enable --- 开启arp广播，默认不开启
左边VLAN3：
[R1]interface GigabitEthernet 0/0/0.2
[R1-GigabitEthernet0/0/0.2]ip address 192.168.2.1 24
[R1-GigabitEthernet0/0/0.2]dot1q termination vid 3
[R1-GigabitEthernet0/0/0.2]arp broadcast enable
右边VLAN2：
[R1]interface GigabitEthernet 0/0/1.1
[R1-GigabitEthernet0/0/1.1]ip address 192.168.3.1 24
[R1-GigabitEthernet0/0/1.1]dot1q termination vid 2
[R1-GigabitEthernet0/0/1.1]arp broadcast enable
右边VLAN3：
[R1]interface GigabitEthernet 0/0/1.2
[R1-GigabitEthernet0/0/1.2]ip address 192.168.4.1 24
[R1-GigabitEthernet0/0/1.2]dot1q termination vid 3
[R1-GigabitEthernet0/0/1.2]arp broadcast enable
5. 配置DHCP
[R1]dhcp enable
左边VLAN2：
[R1]ip pool v2l
Info: It's successful to create an IP address pool.
[R1-ip-pool-v2l]network 192.168.1.0 mask 24
[R1-ip-pool-v2l]gateway-list 192.168.1.1
[R1-ip-pool-v2l]dns-list 114.114.114.114 8.8.8.8
左边VLAN3：
[R1]ip pool v3l
Info: It's successful to create an IP address pool.
[R1-ip-pool-v3l]network 192.168.2.0 mask 24
[R1-ip-pool-v3l]gateway-list 192.168.2.1
[R1-ip-pool-v3l]dns-list 114.114.114.114 8.8.8.8
右边VLAN2：
[R1]ip pool v2r
Info: It's successful to create an IP address pool.
[R1-ip-pool-v2r]network 192.168.3.0 mask 24
[R1-ip-pool-v2r]gateway-list 192.168.3.1
[R1-ip-pool-v2r]dns-list 114.114.114.114 8.8.8.8
右边VLAN3：
[R1]ip pool v3r
Info: It's successful to create an IP address pool.
[R1-ip-pool-v3r]network 192.168.4.0 mask 24
[R1-ip-pool-v3r]gateway-list 192.168.4.1
[R1-ip-pool-v3r]dns-list 114.114.114.114 8.8.8.8
进入相应的接口选择接口支出同全局模式的DHCP服务功能
[R1]interface GigabitEthernet 0/0/0.1
[R1-GigabitEthernet0/0/0.1]dhcp select global
[R1]interface GigabitEthernet 0/0/0.2
[R1-GigabitEthernet0/0/0.2]dhcp select global
[R1]interface GigabitEthernet 0/0/1.1
[R1-GigabitEthernet0/0/1.1]dhcp select global
[R1]interface GigabitEthernet 0/0/1.2
[R1-GigabitEthernet0/0/1.2]dhcp select global
