21-DHCP Relay技术 //IOU模拟

21-DHCP Relay技术 //IOU模拟

Server(config)#ip dhcp pool vlan10Server(dhcp-config)#network 192.168.10.0 255.255.255.0Server(dhcp-config)#default-router 192.168.10.254Server(dhcp-config)#dns-server 8.8.8.8Server(dhcp-config)#lease 15

Server(config)#ip dhcp pool vlan20Server(dhcp-config)#network 192.168.20.0 255.255.255.0Server(dhcp-config)#default-router 192.168.20.254Server(dhcp-config)#dns-server 8.8.8.8Server(dhcp-config)#lease 30

Server(config)#ip dhcp excluded-address 192.168.10.254Server(config)#ip dhcp excluded-address 192.168.20.254

Server(config)#ip routingServer(config)#router ospf 100Server(config-router)#network 172.168.24.0 0.0.0.255 area 0

SW1(config)#int f1/0SW1(config-if)#no shutdown SW1(config-if)#no switchport SW1(config-if)#ip address 172.168.24.2 255.255.255.0

SW1(config)#int f1/1SW1(config-if)#no shutdown SW1(config-if)#switchport trunk encapsulation dot1q SW1(config-if)#switchport mode trunk

SW1(config)#int vlan 10SW1(config-if)#no shutdown SW1(config-if)#ip address 192.168.10.254 255.255.255.0SW1(config)#int vlan 20SW1(config-if)#no shutdown SW1(config-if)#ip address 192.168.20.254 255.255.255.0

SW1(config)#ip routingSW1(config)#router ospf 100SW1(config-router)#network 172.168.24.0 0.0.0.255 area 0SW1(config-router)#network 192.168.10.0 0.0.0.255 area 0SW1(config-router)#network 192.168.20.0 0.0.0.255 area 0

SW2(config)#int f1/0SW2(config-if)#no shutdown SW2(config-if)#switchport trunk encapsulation dot1q SW2(config-if)#switchport mode trunk

SW2(config)#int f1/1SW2(config-if)#no shutdown SW2(config-if)#switchport mode access SW2(config-if)#switchport access vlan 10

SW2(config)#int f1/2SW2(config-if)#no shutdown SW2(config-if)#switchport mode access SW2(config-if)#switchport access vlan 20

SW2(vlan)#vlan 10VLAN 10 added:Name: VLAN0010SW2(vlan)#vlan 20VLAN 20 added:Name: VLAN0020

SW2(config)#no ip routing

PC1(config)#int f0/0PC1(config-if)#no shutdown PC1(config-if)#ip address dhcpPC1(config)#no ip routingPC1(config)#ip default-gateway 192.168.10.254

PC2(config)#int f0/0PC2(config-if)#no shutdown PC2(config-if)#ip address dhcpPC2(config)#no ip routingPC2(config)#ip default-gateway 192.168.20.254

2、重点命令： SW1(config)#int vlan 10SW1(config-if)#ip helper-address 172.168.24.1

SW1(config)#int vlan 20SW1(config-if)#ip helper-address 172.168.24.1

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