DHCP中继和单臂路由实验配置

R7 r8 r10端口动态获取ip 

router(config)#interfacef0/0

Router(config-if)#ip address dhcp

R6划分VLAN 打上trunk

R5配置

Router(config)#interface f0/0

Router(config-if)#no shutdown

Router(config-subif)#interface f0/0.2

Router(config-subif)#no shutdown

Router(config-subif)#encapsulation dot1q 2

Router(config-subif)#ip address 192.168.20.1 255.255.255.0

Router(config-subif)#interface f0/0.3

Router(config-subif)#encapsulation dot1q 3

Router(config-subif)#ip address 192.168.30.1 255.255.255.0

Router(config)#service dhcp

Router(config)#ip dhcp excluded-address 192.168.20.1 192.168.20.10

Router(config)#ip dhcp excluded-address 192.168.30.1 192.168.30.10

Router(config)#ip dhcp excluded-address 192.168.40.1 192.168.40.10

Router(config)#ip dhcp pool yang

Router(dhcp-config)#network 192.168.0.0 255.255.0.0

Router(dhcp-config)#dns-server 5.5.5.5

Router(dhcp-config)#domain-name yang.com

Router(dhcp-config)#lease 2

Router(dhcp-config)#ip dhcp pool vlan2

Router(dhcp-config)#network 192.168.20.0 255.255.255.0

Router(dhcp-config)#lease 1

Router(dhcp-config)#default-router 192.168.20.1

Router(dhcp-config)#ip dhcp pool vlan3

Router(dhcp-config)#network 192.168.30.0 255.255.255.0

Router(dhcp-config)#default-router 192.168.30.1

Router(dhcp-config)#lease 1

Router(dhcp-config)#ip dhcp pool vlan4

Router(dhcp-config)#network 192.168.40.0 255.255.255.0

Router(dhcp-config)#default-router 192.168.40.1

Router(dhcp-config)#lease 1

R9配置

Router(config)#service dhcp

Router(config)#interface f0/0

Router(config-if)#no sh

Router(config-if)#ip address 192.168.40.1 255.255.255.0

Router(config-if)#ip helper-address 1.1.1.1

 

R5和R9封装路由协议；