cisco路由器&三层交换机简单环境配置实例 一、网络拓扑图：二、配置命令：1、路由器的配置： interface FastEthernet0/0 ip address 10.66.88.222 255.255.255.0 ip nat outside duplex auto speed auto interface FastEthernet0/1 ip address 192.168.1.1 255.255.255.0 ip nat inside duplex auto speed auto interface Vlan1 no ip address shutdown ip nat inside source list 1 interface FastEthernet0/0 overload ip classless ip route 192.168.2.0 255.255.255.0 192.168.1.222 ip route 192.168.3.0 255.255.255.0 192.168.1.222 access-list 1 permit 192.168.0.0 0.0.255.255 三、三层交换机的配置： hostname L3-SW ip dhcp pool vlan2pool network 192.168.3.0 255.255.255.0 default-router 192.168.3.1 dns-server 202.101.172.35 ip dhcp pool vlan1pool network 192.168.2.0 255.255.255.0 default-router 192.168.2.1 dns-server 202.101.172.35 interface FastEthernet0/1 no switchport ip address 192.168.1.222 255.255.255.0 duplex auto speed auto interface FastEthernet0/2 switchport mode trunk interface FastEthernet0/5 switchport mode trunk interface Vlan1 ip address 192.168.2.1 255.255.255.0 interface Vlan2 ip address 192.168.3.1 255.255.255.0 ip classless ip route 0.0.0.0 0.0.0.0 192.168.1.1 四、二层交换机的配置： 1、switch0的配置： hostname sw0 interface FastEthernet0/1 switchport mode trunk interface FastEthernet0/2 switchport mode access 2、switch1的配置： hostname sw1 interface FastEthernet0/1 switchport mode trunk interface FastEthernet0/2 switchport access vlan 2 switchport mode access