一、实验拓扑：

二、实验要求：1、R1部署单臂路由技术，为实现不同vlan间的通信：f0/0配置子接口f0/0.10、f0/0.20，封装dot1q（ISL：Inter-Switch Link，思科交换链路内协议，Cisco专有的Trunk封装方式）；2、R1部署DHCP技术，使得PC1、PC2自动获取IP地址；3、验证PC1、PC2是否能自动获取IP地址？是否可以正常通信？三、命令部署：1、R1子接口命令部署：R1(config)#int f0/0R1(config-if)#no shutdown

R1(config-if)#int f0/0.10

R1(config-subif)#encapsulation dot1Q 10R1(config-subif)#ip address 192.168.10.254 255.255.255.0

R1(config-subif)#int f0/0.20

R1(config-subif)#encapsulation dot1Q 20R1(config-subif)#ip address 192.168.20.254 255.255.255.02、R1 DHCP部署：R1(config)#ip dhcp pool aaR1(dhcp-config)#network 192.168.10.254 255.255.255.0R1(dhcp-config)#default-router 192.168.10.0R1(dhcp-config)#dns-server 8.8.8.8R1(dhcp-config)#lease 365

R1(config)#ip dhcp pool bb

R1(dhcp-config)#network 192.168.20.0 255.255.255.0R1(dhcp-config)#default-router 192.168.20.254R1(dhcp-config)#dns-server 8.8.8.8R1(dhcp-config)#lease 365

SW1(config)#int range f0/1 - 2

SW1(config-if-range)#spanning-tree portfast

四、验证：

PC1#ping 192.168.20.1

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 192.168.20.1, timeout is 2 seconds:.!!!!Success rate is 80 percent (4/5), round-trip min/avg/max = 28/38/44 ms