一、网络拓扑图
二、思路：
将交换机作为三层交换机配置，vlan2,3的网关放在交换机上，路由器配置DHCP服务器
vlan 2，3的网关上配置DHCP中继。可以实现不同VLAN通过DHCP获取不同网段的IP
三、配置交换机，命令如下：
<Huawei>system-view //进入系统视图
[Huawei]vlan batch 2 3 4 //创建vlan 2,3,4
[Huawei]interface GigabitEthernet 0/0/1 //进入端口GigabitEthernet 0/0/1
[Huawei-GigabitEthernet0/0/1]undo shutdown //开启端口
[Huawei-GigabitEthernet0/0/1]port link-type access //设置端口为access类型
[Huawei-GigabitEthernet0/0/1]port default vlan 2 //将vlan 2加入端口
[Huawei-GigabitEthernet0/0/1]interface GigabitEthernet 0/0/2 //进入端口GigabitEthernet 0/0/2
[Huawei-GigabitEthernet0/0/2]undo shutdown //开启端口
[Huawei-GigabitEthernet0/0/2]port link-type access //设置端口为access类型
[Huawei-GigabitEthernet0/0/2]port default vlan 3 //将vlan 3加入端口
[Huawei-GigabitEthernet0/0/2]interface GigabitEthernet 0/0/3 //进入端口GigabitEthernet 0/0/3
[Huawei-GigabitEthernet0/0/3]undo shutdown //开启端口
[Huawei-GigabitEthernet0/0/3]port link-type access //设置端口为access类型
[Huawei-GigabitEthernet0/0/3]port default vlan 3 //将vlan 3加入端口
[Huawei-GigabitEthernet0/0/3]quit //退回系统视图
[Huawei]interface vlan 2 //进入vlan 2
[Huawei-Vlanif2]undo shutdown //开启虚拟接口
[Huawei-Vlanif2]ip address 192.168.1.254 255.255.255.0 //设置vlan 2的地址
[Huawei-Vlanif2]quit //退回系统视图
[Huawei]interface vlan 3 //进入vlan 3
[Huawei-Vlanif3]undo shutdown //开启虚拟接口
[Huawei-Vlanif3]ip address 192.168.2.254 255.255.255.0 //设置vlan 2的地址
[Huawei-Vlanif3]quit //退回系统视
[Huawei]interface vlan 4 //进入vlan 4[Huawei]interface vlan 4 //进入vlan 4
[Huawei-Vlanif4]undo shutdown //开启虚拟接口
[Huawei-Vlanif4]ip address 192.168.3.1 255.255.255.0 //设置vlan 4的地址
三、配置路由器以及设置路由器上的路由表
<Huawei>system-view //进入系统视图
[Huawei]interface GigabitEthernet 0/0/0 //进入接口GigabitEthernet 0/0/0
[Huawei-GigabitEthernet0/0/0]undo shutdown //开启接口
[Huawei-GigabitEthernet0/0/0]ip address 192.168.3.254 255.255.255.0 //配置IP地址
[Huawei-GigabitEthernet0/0/0]quit //退回系统视图
[Huawei]ip route-static 192.168.1.0 255.255.255.0 192.168.3.1 //配置去往192.168.1.0网段的路由表
[Huawei]ip route-static 192.168.2.0 255.255.255.0 192.168.3.1 //配置去往192.168.1.0网段的路由表
四、配置DHCP池
[Huawei]ip pool li //新建地址池li
[Huawei-ip-pool-li]network 192.168.1.0 mask 255.255.255.0 配置网段
[Huawei-ip-pool-li]gateway-list 192.168.1.254 //配置网关
[Huawei-ip-pool-li]dns-list 8.8.8.8 //配置DNS服务器
[Huawei]interface GigabitEthernet 0/0/0 //进入接口 GigabitEthernet 0/0/0
[Huawei-GigabitEthernet0/0/0]dhcp select global //开启全局配置IP
[Huawei-GigabitEthernet0/0/0]quit 退回系统视图
[Huawei]ip pool li //新建地址池zhi
[Huawei-ip-pool-li]network 192.168.2.0 mask 255.255.255.0 配置网段
[Huawei-ip-pool-li]gateway-list 192.168.2.254 //配置网关
[Huawei-ip-pool-li]dns-list 114.114.114.114 //配置DNS服务器
六、在交换机上配置中继
[Huawei]interface vlan 2 //进入虚拟接口vlan 2
[Huawei-Vlanif3]dhcp select relay //开启中继服务
[Huawei-Vlanif3]dhcp relay server-ip 192.168.3.254 //配置中继服务
[Huawei-Vlanif3]quit //退回系统视图
[Huawei]interface vlan 3 //进入虚拟接口vlan 3
[Huawei-Vlanif3]dhcp select relay //开启中继服务
[Huawei-Vlanif3]dhcp relay server-ip 192.168.3.254 //配置中继服务
五、验证
