部署拓扑图：
1、对Cloud进行如下设置，选择VMnet1网卡
2、二层交换机的命令：
#
vlan batch 10 20 30 100
#
interface Ethernet0/0/1
port link-type access
port default vlan 100
#
interface Ethernet0/0/2
port link-type access
port default vlan 10
#
interface Ethernet0/0/3
port link-type access
port default vlan 20
#
interface Ethernet0/0/4
port link-type trunk
port trunk allow-pass vlan 2 to 4094
3、三层交换机命令：
#
vlan batch 10 20 100
#
interface Vlanif10
ip address 192.168.10.1 255.255.255.0
dhcp select relay
dhcp relay server-ip 192.168.100.100
#
interface Vlanif20
ip address 192.168.20.1 255.255.255.0
dhcp select relay
dhcp relay server-ip 192.168.100.100
#
interface Vlanif100
ip address 192.168.100.1 255.255.255.0
dhcp select relay
dhcp relay server-ip 192.168.100.100
#
interface GigabitEthernet0/0/1
port link-type trunk
port trunk allow-pass vlan 2 to 4094
4、将虚拟机选择VMnet1网卡连接：
5、为DHCP服务器进行如下IP配置：
6、重启一下网卡：
7、修改配置文件，添加vlan10，vlan20，vlan30网段的IP地址池：
8、启动DHCP服务：
9、验证，将PC配置改为DHCP
10、输入ipcongig /renew获取IP地址：
