vlan路由.doc

一建立网络拓扑
Router1 F0/0 <----> Switch1 F0/0
Switch1 F0/1 <----> Switch2 F0/1
Switch1 F0/2 <----> Switch3 F0/0
Switch2 F0/0 <----> Router2 F0/0
Switch3 F0/1 <----> VPCS V0/1
二配置路由器
Router(config)#int f0/0
Router(config-if)#ip add
Router(config-if)#no shut
Router(config-if)#int l0
Router(config-if)#ip add 模似外网接口
Router(config-if)#exit
Router(config)#router rip
Router(config-router)#ver 2
Router(config-router)#net
Router(config-router)#net
Router(config-router)#exit
Router>config)#ip dhcp excluded
Router(config)#ip dhcp pool dhcp_vlan11
Router(dhcp-config)#network
Router(dhcp-config)#default
Router(dhcp-config)#exit
Router(config)#service dhcp 启用DHCP功能
三配置三层交换机
Router(config)#hostname center_sw
center_sw(config)#ip routing 在三层交换机上启用IP路由功能
center_sw(config)#int f0/0
center_sw(config-if)#no switchport 在f0/0口上启用三层路由
center_sw(config-if)# ip address
center_sw(config-if)#no shut
center_sw(config-if)#int vlan11
center_sw(config-if)#ip add
center_sw(config-if)#ip helper-address
在vlan11做为DHCP中继,指向DHCP服务器IP地址
center_sw(config-if)#no shut
center_sw(config-if)#int f0/1
center_sw(config-if)#switchport mode trunk
center_sw(config-if)#switchport trunk encapsulation dot1q
center_sw(